Diagram sections — 33 (115 total)
AIR CONDITIONING ANTI-LOCK BRAKES ANTI-THEFT BODY CONTROL MODULES COMPUTER DATA LINES COOLING FAN CRUISE CONTROL DEFOGGERS ELECTRONIC POWER STEERING ELECTRONIC SUSPENSION ENGINE PERFORMANCE EXTERIOR LIGHTS GROUND DISTRIBUTION HEADLIGHTS HORN INSTRUMENT CLUSTER INTERIOR LIGHTS MEMORY SYSTEMS NAVIGATION PASSIVE RESTRAINTS POWER DISTRIBUTION POWER DOOR LOCKS POWER MIRRORS POWER SEATS POWER TOP/SUNROOF POWER WINDOWS RADIO SHIFT INTERLOCK SUPPLEMENTAL RESTRAINTS TRANSMISSION TRUNK, TAILGATE, FUEL DOOR WARNING SYSTEMS WIPER/WASHER
AIR CONDITIONING Automatic A/C Wiring Diagram (1 of 2) for Lexus RX 450h 2012 List of elements for Automatic A/C Wiring Diagram (1 of 2) for Lexus RX 450h 2012: 72 (under center console) j/c f92 A/c amplifier assembly (right side of dash) A/c pressure sensor (right side of engine compt) A32 Ab1 Af3 Af4 Af8 Automatic light control sensor (top right side of dash) Blower w/ fan motor sub-assembly (right side of dash) Blw Canh Canl Cltb Clte Clts Computer data lines system Computer data lines system defogger system Cooler thermistor (ambient temperature sensor) (front of engine compt) D37 Defogger system Dfg Dgs Dgs1 Ecu-b 2 fuse 7.5a Engine room r/b assembly (on left side of engine compt) F11 F13 F50 F51 F65 F66 Fdef Fdfi Front room temperature sensor (center of dash) Gnd Heater 2 fuse 7.5a Heater fuse 10a Heater fuse 50a Hf1 Hot at all times Hot in on or start Hot w/ ig1 relay energized Ig+ Instrument panel j/b (left side of dash) J/c a61 (left side of dash) J/c a63 (left side of dash) J/c f65 & f66 (top center of dash) Lin1 Main body ecu (behind left side of dash) Pnk Pre Red S5-2 S5-3 S5-4 S5-5 Seats system Sg-1 Sg-2 Smog ventilation sensor (if equipped) (center front of engine compt) Solar sensor Svdb Svds Svpb Svps Sw 1 Tam Tsd Tsl Tsp Tsr Automatic A/C Wiring Diagram (2 of 2) for Lexus RX 450h 2012 List of elements for Automatic A/C Wiring Diagram (2 of 2) for Lexus RX 450h 2012: 75 (front of engine compt) cooling fan motor 1 (front of engine compt) cooling fan motor 2 (left side of dash) j/c a62 (left side of dash) j/c a63 +b1 +b2 A/c amplifier assembly (right side of dash) A/c blower assembly (right side of dash) A/c evaporator temperature sensor A/c w/p fuse 10a A/c w/p relay A70 A71 A76 A8 (left front of engine compt) A80 Acpb Acpe B bus Bus Bus g C11 Ca3n Ca3p Canh Canl Clk Computer data lines system Connector housing color (black) Connector housing color (green) Connector housing color (red) Cooling fan ecu 1 (left front of engine compt) Cooling fan ecu 2 (right front of engine compt) D3 (top of engine) D48 Da2 Damper servo motor (air inlet) Damper servo motor (air mix driver side) Damper servo motor (air mix front passenger side) Damper servo motor (air vent mode) Din Dout E.f.i. engine coolant temperature sensor (top rear of engine) Ecm (right front of engine compt) Ecu ig1 fuse 10a Engine room j/b assembly (left side of engine compt) Engine room r/b 3 (left side of engine compt) Engine room r/b assembly (on left side of engine compt) Ethw Eti F98 Gnd Heater 2 fuse 7.5a Heater water pump assembly (left side of engine compt) Hot at all times Hot w/ ig1 relay energized Ig1 Inverter assembly w/ converter (left side of engine compt) Ite J/c a60 (left kick panel) J/c a61 (left side of dash) J/c a63 (left side of dash) Pnk Power management control ecu (left side of dash) Rdi fan 1 fuse 40a Rdi fan 2 fuse 40a Rdi fan relay 1 Rdi fan relay 2 Red Rfc Si2 Stb Stbi Thw W/ motor compressor assembly (right front of engine compt)
ANTI-LOCK BRAKES Anti-lock Brakes Wiring Diagram (1 of 4) for Lexus RX 450h 2012 List of elements for Anti-lock Brakes Wiring Diagram (1 of 4) for Lexus RX 450h 2012: 76 +b13 +bc +bi1 A10 (right front of engine compt) A19 A54 A90 A91 Acc Af8 Ap2 Ap3 Brake pedal stroke sensor assembly (on brake pedal bracket) Ca1h Ca1l Capacitor fuse 10a Cbi1 Cbi2 Computer data lines system Csw D16 Ecu-ig1 1 fuse 10a Ecu-ig1 2 fuse 10a Ecu-ig2 fuse 10a Ena F12 F34 F35 Fail Fl+ Fl- Fss Fuse box (rear of luggage compt) Gauge 2 fuse 7.5a Gnd Gnd2 Gnd3 Gnd4 Gnd5 Gs2 H32 Hot at all times Hot w/ ig1 1 relay energized Hot w/ ig1 2 relay energized Hot w/ ig2 relay energized Ig1 Ig2 Instrument panel j/b (left side of dash) J/c a61 (left side of dash) J/c a62 (left side of dash) J/c a63 (left side of dash) J/c p65 (left "d" pillar) Lbl Left front speed sensor (left front hub assembly) Nca Out Out1 Out2 P3 (left "c" pillar) Pnk Red Rl+ Rl- Sgsk Skg Skid control ecu assembly (right side of dash) Sks Sks1 Sks2 Stop light control relay assembly (left end of dash) Stp Stp1 Stp2 Stpo Vbz Vcsk Anti-lock Brakes Wiring Diagram (2 of 4) for Lexus RX 450h 2012 List of elements for Anti-lock Brakes Wiring Diagram (2 of 4) for Lexus RX 450h 2012: 27 (in steering column) steering sensor (right side of dash) j/c f94 (under center floor console) yaw rate sensor assembly A11 Bat Brake fluid level warning switch (in brake fluid reservoir) Canh Canl Combination meter assembly Computer data lines system Electronically controlled brake system main 1 fuse 10a Electronically controlled brake system main 2 fuse 10a Engine room r/b 3 (left side of engine compt) Ess F16 Gnd Hot at all times Ig+ Interior lights system J/c a67 (behind right headlight) J/c f92 (under center console) J/c f93 (left side of dash) Nca Pnk Red Stop light switch assembly (on brake pedal bracket) Vsc off switch Anti-lock Brakes Wiring Diagram (3 of 4) for Lexus RX 450h 2012 List of elements for Anti-lock Brakes Wiring Diagram (3 of 4) for Lexus RX 450h 2012: 26 A77 Ap2 Ap3 Brake stroke simulator cylinder sub assembly (left rear of engine compt) D39 Ecu-b 1 fuse Electronically controlled brake system main 1 fuse 50a Electronically controlled brake system main 2 fuse 50a Electronically controlled brake system main 3 fuse 15a Engine room r/b assembly (on left side of engine compt) F40 Hot at all times Instrument panel j/b (left side of dash) J/c p39 (left "d" pillar) Left front door courtesy light switch (at left "b" pillar) Left rear speed sensor (left rear hub assembly) Nca Pnk Red Right front speed sensor (right front hub assembly) Right rear speed sensor (right rear hub assembly) Rp1 Short connector a77 & a78 (right rear of engine a78 compt) Skid control buzzer assembly (left end of dash) Stop fuse 7.5a Vbz Anti-lock Brakes Wiring Diagram (4 of 4) for Lexus RX 450h 2012 List of elements for Anti-lock Brakes Wiring Diagram (4 of 4) for Lexus RX 450h 2012: 75 (right front of engine compt) a10 +bi2 +bi4 A10 (right front of engine compt) A82 A83 A84 A89 A9 (right front of engine compt) A92 Ap3 Bm1 Bm2 Brake actuator assembly (right rear of engine compt) Bs01 Bs02 Bs03 Bs1 Bs2 Cty Electronically controlled break system mtr1 relay Electronically controlled break system mtr2 relay Engine room r/b 2 (left rear of engine compt) Fla+ Fla- Flr+ Flr- Fr+ Fr- Fra+ Fra- Frr+ Frr- Gnd Gnd1 Gnd2 Gnd6 Gs1 Mr1 Mr2 Mtt Nca Pac1 Pck1 Pck2 Pfl Pfr Pmc1 Pmc2 Pnk Prl Prr R1- R2- Red Rla+ Rla- Rlr+ Rlr- Rr+ Rr- Rra+ Rra- Rrr+ Rrr- Rrr1- Rss Sg1 Sg2 Sg3 Skid control ecu assembly (right side of dash) Smc1 Smc2 Vcm Vcm2
ANTI-THEFT Forced Entry Wiring Diagram (1 of 5) for Lexus RX 450h 2012 List of elements for Forced Entry Wiring Diagram (1 of 5) for Lexus RX 450h 2012: 93 (right "b" pillar) Acc Act+ Act- Actd Actg Altb Back door lock assembly (w/o power back door) (lower center of back door) Bcty Bzr Canh Canl Computer data lines system D dr unlock relay D/l altb fuse 25a D/l source relay D12 D13 D26 D27 D35 D36 Detection unlock Door lock relay Dr unlock relay Ecu-acc fuse 10a Ecu-igi 1 fuse 10a Exterior lights system F1 (left kick panel) F12 F13 F14 F22 F23 F24 F25 F37 F5 (right kick panel) F65 F66 Flcy Frcy Gf1 Gnd2 H10 H23 H24 H26 H27 Haz Hcty Headlights system Horn Horns system Hot at all times Hot w/ acc1 relay energized Hot w/ ig1 1 relay energized Hrly Hzsw Ile Ind Instrument panel j/b (left side of dash) Interior lights system J/c f65 & f66 (top center of dash) J/c f92 (under center console) J/c p40 (left "d" pillar) Jf1 Jf2 Ko1 Lcty Left front door lock motor (in driver's door) Lin2 Lock key Lsfl Lsfr Lswl Lswr Main body ecu (behind left side of dash) Of1 Of2 P4 (left rear of luggage compt) Pf4 Pnk Rcty Red Right rear door courtesy light switch (at right rear "c" pillar) Right rear door lock motor (in right rear door) Trly Ul1 Ul3 Unlock key Yp1 Ypy1 Forced Entry Wiring Diagram (2 of 5) for Lexus RX 450h 2012 List of elements for Forced Entry Wiring Diagram (2 of 5) for Lexus RX 450h 2012: 32 (center front of engine compt) engine hood courtesy switch (center of dash) j/c g22 (left side of engine compt) wireless door lock buzzer (top center of dash) j/c f66 D21 Detection unlock Ecu-b 2 fuse 7.5a Engine room r/b assembly (on left side of engine compt) F11 F5 (right kick panel) Front power window regulator switch assembly Gf3 Heater control panel (radio receiver assembly) Hot at all times If1 If2 Instrument panel j/b (left side of dash) Ip j/b fuse 25a J/c a63 (left side of dash) J/c f92 (under center console) J/c p39 (left "d" pillar) Left front door courtesy light switch (at left "b" pillar) Left rear door courtesy light switch (at left rear "c" pillar) Lock Pf1 Pnk Red Right front door lock motor (in front passenger's door) Security ind Stop fuse 7.5a Stop light switch assembly (on brake pedal bracket) Unlock Forced Entry Wiring Diagram (3 of 5) for Lexus RX 450h 2012 List of elements for Forced Entry Wiring Diagram (3 of 5) for Lexus RX 450h 2012: 77 +b1 +b2 12v A80 A81 Air conditioning system Clk Clk+ Clk- Computer data lines system Cruise control system Detection unlock Door lock control switch Drn2 Engine controls system Engine room r/b 2 (left rear of engine compt) Ep1 Ep2 Eti Exterior lights system Fctl Gmt Gmtg Hot w/ igct main relay energized Hsdn Htm+ Htm- Ig2 Ig2d Igct 3 fuse 10a Ilk Ite Iwp J/c a61 (left side of dash) J/c a62 (left side of dash) J/c f93 (left side of dash) J1 (left "b" pillar) Jf1 Jf2 Left rear door lock motor (in left rear door) Lin1 Lp1 Mmt Mmtg Mrel Mth+ Mth- Multiplex network master switch assembly Nca Niwp Nodd Of1 Opm1 Opm2 Opst P2 (left "b" pillar) Pnk Power distribution system Power management control ecu (left side of dash) Red Req+ Req- Right front door courtesy light switch (at right "b" pillar) Rmt Rmtg Si1 Si2 Sio St1- Stb Stp Transmissions system Vcp1 Vcp2 Vlo Vpa1 Vpa2 Forced Entry Wiring Diagram (4 of 5) for Lexus RX 450h 2012 List of elements for Forced Entry Wiring Diagram (4 of 5) for Lexus RX 450h 2012: 81 (left kick panel) f1 Abfs Accd Af5 Agnd Am2 fuse 7.5a Am21 Am22 Antenna coil Anti-theft system Bth+ Bth- Ca1h Ca1l Ca2h Ca2l Ca3n Ca3p Canh Canl Ccs Code Combination meter assembly Computer data lines system Cruise control system Drn4 E01 E02 E12 Ecu-b 1 fuse 10a Electronic power steering system Engine controls system Engine room j/b assembly (left side of engine compt) Engine room r/b assembly (on left side of engine compt) Ethb F15 F16 F63 F64 F97 F98 Gnd Hot at all times Ig1d Imi Immobi fuse 7.5a Imo Inds Indw J/c f63 & f64 (left side of dash) J/c f92 (under center console) J/c f93 (left side of dash) Lin2 Nca Pnk Power distribution system Power management control ecu (left side of dash) Power switch Psok Red S-horn fuse 7.5a S-horn relay Security horn assembly (left front of engine compt) Sftd Sftu Shift interlock system Slp Slr+ Smrb Smrg Smrp Spdi Ss1 Ss2 Ssw1 Ssw2 Swil Thb Transmissions system Txct Vc5 Forced Entry Wiring Diagram (5 of 5) for Lexus RX 450h 2012 List of elements for Forced Entry Wiring Diagram (5 of 5) for Lexus RX 450h 2012: 81 (driver's door outside handle) left electrical key antenna (left kick panel) f1 (left side of dash) j/c f93 (under center console) front indoor electrical key oscillator A16 A54 Agnd Ant1 Ant2 Anti-theft system Canh Canl Certification ecu assembly (right side of dash) Cg1b Cg2b Cg5b Cg6b Cg7b Cg8b Clg1 Clg2 Clg3 Clg4 Clg5 Clg6 Clg7 Clg8 Clgb Code Computer data lines system Cutb D39 Data Door control receiver (right "c" pillar) Ecu ig2 fuse 10a F12 F18 F40 F5 (right kick panel) F58 F65 Gauge 2 fuse 7.5a Gnd Hot w/ ig2 relay energized If1 Im1 Ind Indoor luggage compartment electrical key oscillator (left front of luggage compt) Instrument panel j/b (left side of dash) J/c f65 & f66 (top center of dash) f66 J/c f92 (under center console) J/c f94 (right side of dash) J/c o31 (right "d" pillar) Jf1 Jn1 Lin Of3 Outside luggage electrical key antenna (behind center of rear bumper) Pf4 Pnk Pos1 Pos2 Rco Rda Rear indoor electrical key oscillator (front of luggage compt) Red Right electrical key antenna (front passenger's door outside handle) Rssi Sen1 Sen2 Sens Swil Trg+ Trunk, tailgate, fuel doors system Tsw1 Tsw2 Tsw5 Tsw6 Txct Vc5 Vo1 Immobilizer Wiring Diagram for Lexus RX 450h 2012 List of elements for Immobilizer Wiring Diagram for Lexus RX 450h 2012: 24 A15 Certification ecu assembly (right side of dash) Efii Efio Engine room r/b assembly (on left side of engine compt) F18 F58 F98 Gnd Hot at all times Id code box (left side of dash) Imi Immobi fuse 7.5a Imo Instrument panel j/b (left side of dash) J/c f92 (under center console) J/c f93 (left side of dash) Lin Lin1 Lin2 Pnk Power management control ecu (left side of dash) Red Steering lock actuator assembly (on steering column)
BODY CONTROL MODULES Body Control Modules Wiring Diagram (2 of 2) for Lexus RX 450h 2012 List of elements for Body Control Modules Wiring Diagram (2 of 2) for Lexus RX 450h 2012: 64 (at base of steering column) multiplex tilt & telescopic ecu (behind right side of dash) tire pressure warning ecu (in right front door) right outer mirror control ecu assembly (left "d" pillar) j/c p66 (left rear of roof) power back door unit assembly (right kick panel) j/c f103 A76 A90 Af10 Air bag sensor assembly (below center console) Bcty Ca1h Ca1l Canh Canl Cann Canp Certification ecu assembly (right side of dash) Cltb Clte Clts Combination meter assembly Cspt Dim Dlc3 (under left side of dash) Door locks system Ecm (right front of engine compt) Exterior lights system F12 F13 F16 F29 F58 F98 Ffog Flcl Gf2 Haz Head Headlights system If2 Interior lights system J/c f70 (left side of dash) J/c f71 (right side of dash) Lcty Lcyl Lsfl Lsfr Main body ecu (behind left side of dash) Navigation receiver assembly Pf1 Pnk Power management control ecu (left side of dash) Power steering ecu assembly (left end of dash) Rcty Red Skid control ecu assembly (right side of dash) Steering sensor (in steering column) Tail Ul1 Ul3 W/ power back door W/o power back door Yaw rate sensor assembly (under center floor console)
COMPUTER DATA LINES Computer Data Lines Wiring Diagram (1 of 3) for Lexus RX 450h 2012 List of elements for Computer Data Lines Wiring Diagram (1 of 3) for Lexus RX 450h 2012: 74 (left side of engine compt) j/c a57 & d41 A/c amplifier (right side of dash) A52 A57 A76 A90 A91 Af10 Af3 Af8 Af9 Air bag sensor assembly (below center console) Bat Ca1h Ca1l Ca2h Ca2l Ca3n Ca3p Can+ Can- Canh Canl Cann Canp Certification ecu assembly (right side of dash) D27 D3 (top of engine) D41 Dcm (telematics transceiver) (under center console) Dia Dlc3 (data link connector) (under left side of dash) Ecm (right front of engine compt) F13 F29 F50 F58 F97 F98 Fg1 G25 H25 Headlight swivel ecu assembly (left end of dash) Hot at all times Init Instrument panel j/b (left side of dash) J/c f102 (center of dash) J/c f70 (left side of dash) J/c f71 (right side of dash) J/c f72 (right side of dash) J/c f94 (right side of dash) Jf1 Left front position control ecu & switch assembly a8 (left side of driver's seat cushion) Left outer mirror control ecu assembly (in left j3 front door) Lin Lin 1 Lin 2 Lin2 Lvl Main body ecu Obd fuse 7.5a Occupant detection ecu (under front passenger's seat) Of3 Oz2 Pf1 Pf4 Pnk Power management control ecu (left side of dash) Pa1 Red Sil Skid control ecu (right side of dash) W/ power back door W/o power back door Computer Data Lines Wiring Diagram (2 of 3) for Lexus RX 450h 2012 List of elements for Computer Data Lines Wiring Diagram (2 of 3) for Lexus RX 450h 2012: 39 (at base of steering column) multiplex tilt & telescopic ecu (behind right side of dash) tire pressure warning ecu (in right front door) right outer mirror control ecu assembly (left "d" pillar) j/c p66 (right kick panel) j/c f103 A56 Ac1 Af5 Af9 Ca2h Ca2l Canh Canl Cann Canp Clearance warning ecu assembly (right side of dash) Combination meter assembly Driving support ecu assembly (left end of dash) F16 F56 If2 J/c f67 J/c f68 (left side of dash) Left rear power window regulator motor assembly (in left rear door) Lin Lp1 Pf1 Pnk Power back door unit assembly (left rear of roof) Power steering ecu assembly (left end of dash) Red Seat belt control ecu (right side of dash) Steering sensor (in steering column) Suspension control ecu (right side of dash) W/ navigation W/ power back door W/o navigation W/o power back door Yaw rate sensor assembly (under center floor console) Computer Data Lines Wiring Diagram (3 of 3) for Lexus RX 450h 2012 List of elements for Computer Data Lines Wiring Diagram (3 of 3) for Lexus RX 450h 2012: 64 (center front of roof) sliding roof control ecu (in driver's door) left front power window regulator motor assembly (in front passenger's door) right front power window regulator motor assembly (in right rear door) right rear power window regulator motor assembly (left side of dash) id code box (left side of dash) j/c f93 (on steering column) steering lock actuator assembly (w/o navigation) radio receiver assembly Atx+ Atx- Canh Canl F54 G11 G24 Gf1 Gf2 Gf3 Heater control panel (radio receiver assembly) Hf2 If1 J/c f92 (under center console) J/c p55 & p56 (left rear of vehicle) J/c p65 (left "d" pillar) Jf2 Ko1 Lin Lin 1 Lin1 Meter mirror sub-assembly (left side of dash) Mpx1 Mpx2 Multi information display assembly Multi-display assembly Multi-media interface ecu (under rear of center console) Multiplex network master switch assembly Navigation receiver assembly O33 Of3 Og1 P3 (left "c" pillar) P55 P56 Parking assist ecu (right side of dash) Pf2 Pnk Red St-plug Stereo component amplifier (luggage compt) Tg1 Tx+ Tx- Tx1+ Tx1- Tx2+ Tx2- Txm+ Txm- U10 Ug1 W/ multi-media interface ecu W/ navigation W/o multi-media interface ecu W/o navigation
COOLING FAN Cooling Fan Wiring Diagram for Lexus RX 450h 2012 List of elements for Cooling Fan Wiring Diagram for Lexus RX 450h 2012: 42 (front of engine compt) cooling fan motor 1 (front of engine compt) cooling fan motor 2 (left side of dash) j/c a62 (left side of dash) j/c a63 (left side of engine compt) engine room r/b 3 +b1 +b2 A/c amplifier assembly (right side of dash) A/c pressure sensor (right side of engine compt) A70 A71 A76 A8 (left front of engine compt) Af3 Af8 Canh Canl Computer data lines system Cooling fan ecu 1 (left front of engine compt) Cooling fan ecu 2 (right front of engine compt) E.f.i. engine coolant temperature sensor (top rear of engine) Ecm (right front of engine compt) Ecu ig1 fuse 10a Engine room r/b assembly (on left side of engine compt) Ethw F50 Hot at all times Hot w/ ig1 relay energized J/c a60 (left kick panel) J/c a61 (left side of dash) Pnk Pre Rdi fan 1 fuse 40a Rdi fan 2 fuse 40a Rdi fan relay 1 Rdi fan relay 2 Red Rfc S5-3 Sg-2 Si2 Thw
CRUISE CONTROL Cruise Control Wiring Diagram, with Dynamic Radar Controls (1 of 2) for Lexus RX 450h 2012 List of elements for Cruise Control Wiring Diagram, with Dynamic Radar Controls (1 of 2) for Lexus RX 450h 2012: 76 +b2 A76 A81 A89 A90 A91 A92 Accelerator position sensor (on accelerator pedal assembly) Af10 Ap2 Ap3 Ca2h Ca2l Canh Canl Chk Combination meter assembly Computer data lines system D2 (top rear of engine) Da2 Drn2 Ecm (right front of engine compt) Efi main fuse 30a Efi main relay Engine room r/b 2 (left rear of engine compt) Engine room r/b assembly (on left side of engine compt) Ep1 Ep2 Eta F16 Fl+ Fl- Fr+ Fr- Fss Ge01 Gs1 Gs2 Hot at all times Hv r/b 1 fuse 30a Igct 3 fuse 10a Igct main relay J/c a59 (left side of dash) J/c a62 (left side of dash) J/c a63 (left side of dash) Left front speed sensor (left front hub assembly) Left rear speed sensor (left rear hub assembly) Mrel Nca Pnk Power management control ecu (left side of dash) Red Right front speed sensor (right front hub assembly) Right rear speed sensor (right rear hub assembly) Rl+ Rl- Rp1 Rr+ Rr- Rss Shift lever position sensor (on transmission) Skid control ecu (right side of dash) St1- Stop fuse 7.5a Stp1 Stp2 Stpo Throttle w/ motor body (right rear of engine) Vcp1 Vcp2 Vcta Vpa1 Vpa2 Vta Vta1 Vta2 Cruise Control Wiring Diagram, with Dynamic Radar Controls (2 of 2) for Lexus RX 450h 2012 List of elements for Cruise Control Wiring Diagram, with Dynamic Radar Controls (2 of 2) for Lexus RX 450h 2012: 54 +res -set Ab1 Ac1 Acc Af2 Af3 Af8 Ca2h Ca2l Cancel Cchg Ccs Computer data lines system Cruise control main switch assembly Cruise control switch Distance control Driving support ecu assembly (left end of dash) Ecu ig1 fuse 10a Ecu ig2 fuse 10a Engine room r/b assembly (on left side of engine compt) F30 F34 F35 F40 Gnd Hot w/ ig1 relay energized Hot w/ ig2 relay energized Igb Instrument panel j/b assembly (left side of dash) J/c a61 (left side of dash) J/c a62 (left side of dash) J/c a63 (left side of dash) J/c f92 (under center console) J/c f93 (left side of dash) Lrdd Lrrd Millimeter wave radar sensor assembly (center front of engine compt) Mode On-off Out Pnk Red Right steering pad switch Sgnd Spiral cable sub- assembly (in steering column) St1- Steering pad switch assembly Stop light control relay assembly (left end of dash) Stop light switch assembly (on brake pedal bracket) Stp Stp- Wip2 Wiper/washer system Cruise Control Wiring Diagram, without Dynamic Radar Controls (1 of 2) for Lexus RX 450h 2012 List of elements for Cruise Control Wiring Diagram, without Dynamic Radar Controls (1 of 2) for Lexus RX 450h 2012: 61 +b2 +res -set A76 A81 Accelerator position sensor (on accelerator pedal assembly) Af10 Ca2h Ca2l Cancel Canh Canl Ccs Chk Combination meter assembly Computer data lines system Cruise control main switch assembly Cruise control switch D2 (top rear of engine) Da2 Drn2 Ecm (right front of engine compt) Efi main fuse 30a Efi main relay Engine room r/b 2 (left rear of engine compt) Engine room r/b assembly (on left side of engine compt) Ep1 Ep2 Eta F16 F40 F98 Ge01 Hot at all times Hv r/b 1 fuse 30a Igct 3 fuse 10a Igct main relay J/c a59 (left side of dash) J/c a62 (left side of dash) J/c a63 (left side of dash) J/c f92 (under center console) J/c f93 (left side of dash) Mrel Nca On-off Pnk Power management control ecu (left side of dash) Red Shift lever position sensor (on transmission) Spiral cable sub- assembly (in steering column) St1- Stop fuse 7.5a Throttle w/ motor body (right rear of engine) Vcp1 Vcp2 Vcta Vpa1 Vpa2 Vta Vta1 Vta2 Cruise Control Wiring Diagram, without Dynamic Radar Controls (2 of 2) for Lexus RX 450h 2012 List of elements for Cruise Control Wiring Diagram, without Dynamic Radar Controls (2 of 2) for Lexus RX 450h 2012: 46 A89 A90 A91 A92 Acc Ap2 Ap3 Ca2h Ca2l Computer data lines system Ecu ig2 fuse 10a F30 F34 F35 Fl+ Fl- Fr+ Fr- Fss Gnd Gs1 Gs2 Hot w/ ig2 relay energized Instrument panel j/b assembly (left side of dash) J/c a61 (left side of dash) J/c a63 (left side of dash) Left front speed sensor (left front hub assembly) Left rear speed sensor (left rear hub assembly) Nca Out Red Right front speed sensor (right front hub assembly) Right rear speed sensor (right rear hub assembly) Rl+ Rl- Rp1 Rr+ Rr- Rss Skid control ecu (right side of dash) Stop light control relay assembly (left end of dash) Stop light switch assembly (on brake pedal bracket) Stp Stp1 Stp2 Stpo
DEFOGGERS Front Deicer Wiring Diagram for Lexus RX 450h 2012 List of elements for Front Deicer Wiring Diagram for Lexus RX 450h 2012: 26 (left side of dash) j/c a61 (w/ navigation) deicer switch front wiper A/c amplifier (right side of dash) A32 Af3 Deicer fuse 25a Deicer relay Engine room r/b assembly (on left side of engine compt) F50 F51 Fdef Fdfi Front wiper deicer (windshield glass) (left rear of engine compt) Front wiper switch (w/o navigation) Heater 2 fuse 7.5a Heater fuse 10a Hot at all times Hot w/ ig1 2 relay energized Hot w/ ig1 relay energized Ig+ Instrument panel j/b (left side of dash) Interior lights system J/c a58 (behind left headlight) Pnk Red Sw 1 Rear Defogger & Heated Mirrors Wiring Diagram for Lexus RX 450h 2012 List of elements for Rear Defogger & Heated Mirrors Wiring Diagram for Lexus RX 450h 2012: 53 (left "d" pillar) noise filter (rear window defogger) A/c amplifier (right side of dash) A11 A14 Af3 Ap1 Bdr C10 C17 C18 Canh Canl Cann Canp Computer data lines system Def+ Def- Dfg Engine room j/b assembly (left side of engine compt) Engine room r/b assembly (on left side of engine compt) F5 (right kick panel) F50 Fl door fuse 25a Fr door fuse 25a Gnd Heater 2 fuse 7.5a Heater control panel (radio receiver assembly) Hot at all times Hot w/ ig1 relay energized Htr+ Htr- If1 If2 Instrument panel j/b (left side of dash) J/c a61 (left side of dash) J/c a63 (left side of dash) J/c y23 (left side of back door) J1 (left "b" pillar) Left outer mirror control ecu assembly (in left front door) Left outer rear view mirror assembly (on left front door) P64 Pnk Rear window defogger Rear window defogger switch Red Right outer mirror control ecu assembly (in right front door) Right outer rear view mirror assembly (on right front door) Rr def fuse 50a Rr def relay Tx+ Tx- Y16 Yp3
ELECTRONIC POWER STEERING Electronic Power Steering Wiring Diagram for Lexus RX 450h 2012 List of elements for Electronic Power Steering Wiring Diagram for Lexus RX 450h 2012: 68 A54 A90 Asst Ca1h Ca1l Can1l Canh Canl Cbp Cbpe Cep Cepf Combination meter assembly Computer data lines system D15 D38 Ddok Ecu-b 2 fuse 7.5a Ecu-ig1 1 fuse 10a Engine room r/b assembly (on left side of engine compt) Eps fuse 80a F10 F100 F101 F11 F16 F2 (left end of dash) F98 Fusible link block\ assembly (left rear of luggage compt) Gauge 2 fuse 7.5a Hot at all times Hot in on or start Hv battery junction block assembly (left side of luggage compt) Ig+ Instrument panel j/b (left side of dash) J/c f92 (under center console) J/c f93 (left side of dash) Motor resolver Nca Pgnd Pig Pnk Power management control ecu (left side of dash) Power steering converter assembly Power steering ecu assembly (left end of dash) Power steering motor Power steering motor assembly (integral to power steering ecu assembly) Power steering torque sensor (integral to power steering ecu assembly) Psok Rcos Red Rgnd Rout Rsin z10 Skid control ecu (right side of dash) Steering sensor (in steering column) Torque sensor Trq1 Trq2 Trqg Trqv Vgnd Vot1 Wdd1 G1 (under center floor console) G19 Z11 Z12 Power Tilt Steering Column Wiring Diagram for Lexus RX 450h 2012 List of elements for Power Tilt Steering Column Wiring Diagram for Lexus RX 450h 2012: 42 Cann Canp Computer data lines system D30 D39 Ecu-b 1 fuse 10a Ecu-ig1 1 fuse 10a Ecub Engine room r/b assembly (on left side of engine compt) F35 F38 F40 Gnd Headlight dimmer switch assembly Hot at all times Hot in on or start Instrument panel j/b (left side of dash) J/c f66 (top center of dash) J/c f92 (under center console) J/c f93 (left side of dash) J/c f94 (right side of dash) Msw Multiplex tilt & telescopic ecu (at base of steering column) Pnk Power tilt motor (on steering column) Red Telesco short Telesco stretch Telescopic motor Telescopic sensor Tem+ Tem- Tes Ti & te fuse 30a Tilt & telescopic switch Tilt down Tilt up Tim+ Tim- Tis Vce Vci
ELECTRONIC SUSPENSION Electronic Suspension Wiring Diagram (1 of 2) for Lexus RX 450h 2012 List of elements for Electronic Suspension Wiring Diagram (1 of 2) for Lexus RX 450h 2012: 63 (behind right headlight) A11 A55 A56 Af9 Air sus fuse 20a Ao2 Ap1 Bat Canh Canl Computer data lines system Dnsw Down Ecu ig1 fuse 10a Engine room r/b assembly (on left side of engine compt) Gnd Headlight swivel ecu assembly (w/ adaptive front lighting system) (left end of dash) Height control off switch Height control valve harness assembly Hot at all times Hot in run or start Ill+ Ill- Instrument panel j/b (left side of dash) Interior lights system J/c a62 (left side of dash) J/c a67 J/c f92 (under center console) J/c f93 (left side of dash) J/c f94 (right side of dash) J/c o30 (right "d" pillar) J/c o31 (right "d" pillar) Ldns Left front height control sensor sub-assembly (left side of engine compt) Lups P24 P5 (right rear of luggage compt) Pnk Red Right front height control sensor sub-assembly (right side of engine compt) Rm+ Rm- Sbr Sgb2 Sgh5 Sgr Shb Shb1 Shb5 Shf2 Shfl Shfr Shg Shg1 Shg2 Shrl Slrl Slrr Suspension control ecu (right side of dash) Suspension control switch Suspension control switch 2 Upsw Electronic Suspension Wiring Diagram (2 of 2) for Lexus RX 450h 2012 List of elements for Electronic Suspension Wiring Diagram (2 of 2) for Lexus RX 450h 2012: 48 (left front corner of engine compt) height control valve sub assembly 1 (right kick panel) (under right rear of vehicle) height control valve sub assembly 2 A11 A54 A64 A65 Af5 Air sus fuse 50a Air sus relay Ao2 Ap2 Canh Canl Combination meter assembly Computer data lines system Engine room r/b assembly (on left side of engine compt) F16 Hot at all times J/c a63 (left side of dash) J/c a67 (behind right headlight) J/c o30 (right "d" pillar) J/c o31 (right "d" pillar) Left rear height control sensor sub-assembly (at left rear suspension) Lh+ Pf2 Pneumatic w/ tube tank assembly (near right "b" pillar) Pnk Qo1 Red Rh+ Right rear height control sensor sub-assembly (at right rear suspension) Rp1 Shb Shb3 Shb4 Shg Shg3 Shg4 Short connector a64 & a65 Shr2 Shrl Shrr Slex Slfl Slfr Sllo Suspension control ecu (right side of dash)
ENGINE PERFORMANCE
3.5L HYBRID 3.5L Hybrid, Engine Performance Wiring Diagram (1 of 10) for Lexus RX 450h 2012 List of elements for 3.5L Hybrid, Engine Performance Wiring Diagram (1 of 10) for Lexus RX 450h 2012: 57 +b2 A/f fuse 20a A/f relay A11 A76 Af5 Ap3 Batt C/opn relay Can+ Can- Canh Canister pressure sensor Canister pump module (under left side of vehicle chassis) Canl Ccv2 Computer data lines system Cooling fans system D3 (top of engine) Da1 Da2 Ecm (right front of engine compt) Ecu ig2 fuse 10a Efi 2 fuse 10a Engine room j/b assembly (left side of engine compt) Engine room r/b assembly (on left side of engine compt) Eppm F/pmp fuse 15a F12 F30 Fpr Fuel tank pressure sensor (in fuel tank) Go1 Go2 Hot at all times Hot w/ ig2 relay energized Igsw Instrument panel j/b (left side of dash) J/c a59 (left side of dash) J/c a60 (left kick panel) J/c a62 (left side of dash) J/c a67 (behind right headlight) J/c p39 (left "d" pillar) Leak detection pump Mpmp Mrel Pf5 Pnk Ppmp Ptnk Red Rfc Vcpp Vent valve Vpmp Vsv (fuel vapor-containment valve) (under left rear of vehicle) Jp2 3.5L Hybrid, Engine Performance Wiring Diagram (2 of 10) for Lexus RX 450h 2012 List of elements for 3.5L Hybrid, Engine Performance Wiring Diagram (2 of 10) for Lexus RX 450h 2012: 36 (left front of engine compt) oil motor pump assembly Ap2 D45 Efi 1 fuse 10a Efi main fuse 30a Efi main relay Engine room r/b 3 (left side of engine compt) Engine room r/b assembly (on left side of engine compt) F/pmp relay Front motor generator 1 (left front of engine compt) Fuel pump & fuel sender (top of fuel tank) Fuel pump resistor (right rear of engine compt) Gcs Gcsg Gmt Gmtg Grf Grfg Gsn Gsng Hot at all times Instrument cluster system J/c a58 (behind left headlight) J/c a63 (left side of dash) J/c p38 (left "d" pillar) Nca Oil pmp fuse 10a Oil pmp relay Opg Opm1 Opst P3 (left "c" pillar) Pnk Red Jp1 Z35 3.5L Hybrid, Engine Performance Wiring Diagram (3 of 10) for Lexus RX 450h 2012 List of elements for 3.5L Hybrid, Engine Performance Wiring Diagram (3 of 10) for Lexus RX 450h 2012: 47 (left side of engine compt) inverter assembly w/converter Amd Cbi Cei D44 D46 mcsg D47 mmt Da1 Dcdc fuse 150a Drn6 Engine room r/b assembly (on left side of engine compt) Front motor generator 2 (left front of engine compt) Gcs Gcsg Grf Grfg Gsn Gsng Hot at all times Mcs Mcsg Mmtg Mrf Mrfg Msn Msng Nca Pnk R-u R-v R-w Rcs Rcsg Rear traction transaxle motor generator (at rear axle) Red Rmt Rmtg Rrf Rrfg Rsn Rsng G10 G11 Ga1 Z36 Z37 u Z38 3.5L Hybrid, Engine Performance Wiring Diagram (4 of 10) for Lexus RX 450h 2012 List of elements for 3.5L Hybrid, Engine Performance Wiring Diagram (4 of 10) for Lexus RX 450h 2012: 76 (behind left headlight) j/c a58 (left "c" pillar) p3 (left side of engine compt) inverter assembly w/converter +b1 +b2 A79 A80 A81 Ap3 Ca2h Ca2l Ccs Clk+ Clk- Cruise control system Da1 Dcdc-s fuse 7.5a Drn1 Drn2 Drn3 Drn4 Drn5 Drn7 Drn8 Ep1 Ep2 F97 F98 Fuse box (rear of luggage compt) Gmt Gmtg Gnd Gnd1 Gnd2 Hot at all times Hsdn Htm+ Htm- Igct Ilk Ilki Ilko Interlock switch J/c p65 (left "d" pillar) Lines system computer data Mmt Mmtg Mth+ Mth- Nca Nodd Opm1 Opm2 Pf5 Pnk Post Power management control ecu (left side of dash) Pz1 Rcs Rcsg Red Req+ Req- Rmt Rmtg Rrf Rrfg Rsgn Rsn Smrp Vcp1 Vcp2 Vlo Vpa1 Vpa2 Ga2 3.5L Hybrid, Engine Performance Wiring Diagram (5 of 10) for Lexus RX 450h 2012 List of elements for 3.5L Hybrid, Engine Performance Wiring Diagram (5 of 10) for Lexus RX 450h 2012: 37 (left side of dash) instrument panel j/b (right side of dash) j/c f94 Accelerator position sensor (on accelerator pedal assembly) Af10 Canh Canl Chk Combination meter assembly Computer data lines system D39 Da2 Ecu-b 1 fuse 10a Engine room r/b 2 (left rear of engine compt) Engine room r/b assembly (on left side of engine compt) Ep1 Ep2 F15 F16 F40 Hot at all times Hv r/b 1 fuse 30a Igct 2 fuse 10a Igct 3 fuse 10a Igct main relay J/c a62 (left side of dash) J/c a63 (left side of dash) J/c f92 (under center console) J/c f93 (left side of dash) Pcu fuse 15a Pnk Red Shift lever position sensor (on transmission) Transmission control switch (under front of center console) Vcp1 Vcp2 Vpa1 Vpa2 3.5L Hybrid, Engine Performance Wiring Diagram (6 of 10) for Lexus RX 450h 2012 List of elements for 3.5L Hybrid, Engine Performance Wiring Diagram (6 of 10) for Lexus RX 450h 2012: 61 (left "c" pillar) p3 (left rear of vehicle) j/c p45 (left side of dash) j/c f93 (on brake pedal bracket) stop light switch assembly A80 A81 Ac1 Ap2 Ap3 Batt fan fuse 15a Batt fan relay Battery thermometer sensor (left rear of vehicle) Bth+ Bth- Ca2h Ca2l Center battery cooling blower motor (near hv battery) Computer data lines system D31 Driving support ecu assembly (w/ dynamic radar cruise control) (left end of dash) Drn4 Ecu ig1 1 fuse 10a Engine room r/b 3 (left side of engine compt) Engine room r/b assembly (on left side of engine compt) Ethb F97 F98 Fctl Gnd0 Gnd1 Hot at all times Hot w/ ig1 1 relay energized Ig0 Ig1 Instrument panel j/b (left side of dash) J/c a61 (left side of dash) J/c p65 (left "d" pillar) Left battery cooling blower motor (near hv battery) Mrel Nca Pf5 Pnk Power management control ecu (left side of dash) Psok Pz1 Red Right battery cooling blower motor (near hv battery) Setu Sftd Si0 Si1 Si2 Smrb Smrg Spdi St1- Stop fuse 7.5a Stp- Thb Vm0 Vm1 3.5L Hybrid, Engine Performance Wiring Diagram (7 of 10) for Lexus RX 450h 2012 List of elements for 3.5L Hybrid, Engine Performance Wiring Diagram (7 of 10) for Lexus RX 450h 2012: 79 (left "c" pillar) p3 Ap3 Battery voltage sensor (under rear seat, on hybrid vehicle battery) z29 Bth+ Bth- Busber module center Cbp Cep Current sensor Dook F101 Fuse 15a Gb0 Gb1 Gb2 Gb3 Gb4 Gb5 Gbb0 Gbbo Gib Gnd Hv battery Hv battery junction block assembly (left side of luggage compt) Hybrid vehicle battery Igct J/c p65 (left "d" pillar) Lh busber module Nca Pnk Pnk vb11 Power steering converter assembly Pz1 Red Red vb14 Red vb7 Rh busber module Service plug Smr1 Smr2 Smr3 Tb0 Tb1 Tb2 Tb3 Tb4 Tb5 Vb1 Vb10 Vb11 Vb12 Vb13 Vb14 Vb15 Vb2 Vb3 Vb4 Vb5 Vb6 Vb7 Vb8 Vb9 Vib Vm1 Vm2 Vmo Z27 Z18 Z19 Z22 Z23 Z25 Z26 Z29 Z30 Z31 Z32 Z33 Z34 3.5L Hybrid, Engine Performance Wiring Diagram (8 of 10) for Lexus RX 450h 2012 List of elements for 3.5L Hybrid, Engine Performance Wiring Diagram (8 of 10) for Lexus RX 450h 2012: 35 (top left side of engine) noise filter (ignition bank 2) (top of left valve cover) ignition coil assembly 2 (top of left valve cover) ignition coil assembly 4 (top of left valve cover) ignition coil assembly 6 (top of right valve cover) ignition coil assembly 1 (top of right valve cover) ignition coil assembly 3 (top of right valve cover) ignition coil assembly 5 (top right side of engine) noise filter (ignition bank 1) Crank position sensor (left front of engine) D2 (top rear of engine) D3 (top of engine) Db1 E.f.i vacuum sensor (right front of engine) Gnd Igf Igt1 Igt2 Igt3 Igt4 Igt5 Igt6 Knock control sensor (bank 2) (top of engine, under intake manifold) Nca Pim Pnk Red Throttle w/ motor body (right rear of engine) Vta Vta2 Vvl+ Vvl- Vvr+ Vvr- Vvt sensor (bank 1 intake side) (front of right cylinder bank) Vvt sensor (bank 2 intake side) (front of left cylinder bank) 3.5L Hybrid, Engine Performance Wiring Diagram (9 of 10) for Lexus RX 450h 2012 List of elements for 3.5L Hybrid, Engine Performance Wiring Diagram (9 of 10) for Lexus RX 450h 2012: 54 (left side of engine compt) j/c a57 & d41 A1a+ A1a- A2a+ A2a- A57 D41 Da1 E2g Ecm (right front of engine compt) Ekn2 Eknk Engine room r/b assembly (on left side of engine compt) Epim Eta Etcs fuse 10a Etha Ethw Ex1b Ex2b Fuel injectors assembly (injectors 1, 3 & 5: right side of intake manifold) (injectors 2, 4 & 6: left side of intake manifold) Ge01 Hot at all times Hot w/ ig2 relay energized Ign fuse 10a Igt1 Igt2 Igt3 Igt4 Igt5 Igt6 Knk1 Knk2 Nca Ne+ Ne- Ox1b Ox2b Pim Pnk Prg Red Tha Thw Vcta Vcv1 Vcv2 Vpim Vta1 Vta2 Vv1+ Vv1- Vv2+ Vv2- 3.5L Hybrid, Engine Performance Wiring Diagram (10 of 10) for Lexus RX 450h 2012 List of elements for 3.5L Hybrid, Engine Performance Wiring Diagram (10 of 10) for Lexus RX 450h 2012: 53 (front of left cylinder bank) cam timing oil control valve (bank 2 intake side) (front of right cylinder bank) cam timing oil control valve (bank 1 intake side) (in left exhaust manifold) air fuel ratio sensor (bank 2 sensor 1) (in left exhaust) oxygen sensor (bank 2 sensor 2) (in right exhaust manifold) air fuel ratio sensor (bank 1 sensor 1) (right front of engine) egr valve assembly (top of engine) d3 +b1 +b2 +bm A1a+ A1a- A2a+ A2a- Af2 D1 (left rear of engine) D3 (top of engine) Da1 Da2 Db1 E.f.i engine coolant temperature sensor (top rear of engine) E01 E02 E03 E04 E05 E2g Ecm (right front of engine compt) Egr1 Egr2 Egr3 Egr4 Fs2 Ha1a Ha2a Ht1b Ht2b Igf1 Intake mass air flow meter (left rear of engine compt) Knock control sensor (bank 1) (top of engine, under intake manifold) Me01 Nca Oc1+ Oc1- Oc2+ Oc2- Ox1b Ox2b Oxygen sensor (bank 1 sensor 2) (in exhaust) Pnk Purge vsv (left rear of engine) Red The
EXTERIOR LIGHTS Backup Lamps Wiring Diagram for Lexus RX 450h 2012 List of elements for Backup Lamps Wiring Diagram for Lexus RX 450h 2012: 26 A80 A81 Ap2 Backup Bk/up lp fuse 7.5a Bk/up lp relay Da2 Engine room r/b 2 (left rear of engine compt) Engine room r/b assembly (on left side of engine compt) Hot in on or start Hot w/ igct main relay energized Igct 3 fuse 10a J/c a62 (left side of dash) J/c a63 (left side of dash) J/c p36 (left rear of vehicle) J/c y21 (right side of back door) J/c y22 (left side of back door) J/c y23 (left side of back door) Left rear light assembly Pnk Power management control ecu (left side of dash) Red Right rear light assembly Shift lever position sensor (on transmission) Y20 Yp1 Exterior Lamps Wiring Diagram (1 of 3) for Lexus RX 450h 2012 List of elements for Exterior Lamps Wiring Diagram (1 of 3) for Lexus RX 450h 2012: 92 (center of dash) j/c g22 (right side of back door) j/c y21 Acc Air conditioning system Altb Automatic light control sensor (top right side of dash) Bcty Canh Canl Center stop light assembly Cltb Clte Clts Computer data lines system D/l altb fuse 25a D17 D18 D26 D32 Dcdc fuse 150a Def Ecu-acc fuse 10a Ecu-igi 1 fuse 10a Engine room r/b assembly (on left side of engine compt) F12 F13 F14 F39 F65 F66 Flcy Frcy Gf3 Gnd Gnd2 H26 H28 Haz Head Hf1 Hmsl Hot at all times Hot in on or acc Hot in on or start Hzsw Instrument panel j/b (left side of dash) Interior lights system J/c f65 & f66 (top center of dash) J/c f92 (under center console) J/c o31 (right "d" pillar) J/c p37 (left rear of vehicle) J/c p38 (left "d" pillar) J/c y23 (left side of back door) Jf2 Lcty Left license plate light assembly Left outer mirror control ecu assembly (in left front door) Left outer rear view mirror assembly (on left front door) Left rear combination light assembly Left rear side marker light assembly Main body ecu (behind left side of dash) Nca Noise filter (center stop light assembly) (left "d" pillar) Op2 P20 P21 P25 P26 P3 (left "c" pillar) P31 P62 P63 Rcty Red Right license plate light assembly Right rear combination light assembly Right rear side marker light assembly Stp- Tail Tail fuse 10a Tail relay Trly Trn+ Trn- Trni Tsl Tsr Turn Vo1 Wp1 Yp1 Yh1 Exterior Lamps Wiring Diagram (2 of 3) for Lexus RX 450h 2012 List of elements for Exterior Lamps Wiring Diagram (2 of 3) for Lexus RX 450h 2012: 55 (behind left side of dash) turn signal flasher assembly (left side of dash) j/c f63 & f64 (right side of back door) j/c y21 Af5 Ap2 Auto Canada Cob1 Cos1 Coz1 Ctla Ctlb Ctls Ctrs Drl off F63 F64 Gf2 Gi1 Haz Hazard warning signal switch assembly Head Headlight dimmer switch assembly Interior lights system J/c f92 (under center console) J/c f93 (left side of dash) J/c f94 (right side of dash) J/c g21 (center of dash) J/c p39 & p40 (left "d" pillar) J/c y23 (left side of back door) Left rear light assembly Light control Off Off lh P39 P4 (left rear of luggage compt) P40 P5 (right rear of luggage compt) Pnk Red Right rear light assembly Switch Tail Towing converter (right side of luggage compt) Trailer hitch (under left end of rear bumper) Trnl Trnr Ttla Ttls Ttrs Turn switch Twz1 Usa Wp1 Y19 Exterior Lamps Wiring Diagram (3 of 3) for Lexus RX 450h 2012 List of elements for Exterior Lamps Wiring Diagram (3 of 3) for Lexus RX 450h 2012: 78 (left side of dash) j/c f93 (on brake pedal assembly) stop light switch assembly (under center console) j/c f92 A11 A17 A22 A23 A25 A30 A31 A4 (left front of engine compt) A54 A66 A68 A81 A90 A91 Ac1 Acc Af5 Ca1h Ca1l Canh Canl Combination meter assembly Computer data lines system Cra+ D19 D33 D34 Driving support ecu assembly (left end of dash) Engine room r/b assembly (on left side of engine compt) F15 F16 F34 F35 Gauge 1 fuse 10a Gauge 2 fuse 7.5a Gnd H19 H33 Haz fuse 15a Hid & halogen type Hot at all times Hot in on or start If1 Ig+ Instrument panel j/b (left side of dash) J/c a61 (left side of dash) J/c a63 (left side of dash) J/c a67 (behind right headlight) J/c f94 (right side of dash) Led type Left headlight assembly Marker side Out Parking light Pnk Power management control ecu (left side of dash) Red Right headlight assembly Right outer mirror control ecu assembly (in right front door) Right outer rear view mirror assembly (on right front door) Shift lock control ecu sub-assembly (under center console, beside shift lever) Skid control ecu (right side of dash) Stop fuse 7.5a Stop light control relay assembly (left end of dash) Stp Stp- Stp1 Stp2 Stpo Towing fuse 30a Trn+ Trn- Trni Turn W/ dynamic radar cruise control
GROUND DISTRIBUTION Ground Distribution Wiring Diagram (1 of 5) for Lexus RX 450h 2012 List of elements for Ground Distribution Wiring Diagram (1 of 5) for Lexus RX 450h 2012: 75 (left rear of engine compt) engine room r/b 2 (left side of engine compt) engine room j/b assembly (left side of engine compt) engine room r/b 3 (w/o power back door) back door lock assembly A1 (left front of engine compt) A10 (right front of engine compt) A17 A18 A19 A2 (left front of engine compt) A20 A22 A23 A4 (left front of engine compt) A5 (right front of engine compt) A6 (left end of dash) A66 A7 (left end of dash) A79 A83 A84 A86 A89 A9 (right front of engine compt) A90 Ab1 Air sus relay Bk/up lp relay Brake actuator assembly C17 Diode Efi main relay Engine hood courtesy switch Engine room j/b assembly (left side of engine compt) Engine room r/b assembly (on left side of engine compt) Front wiper deicer (windshield glass) Halogen type Heater water pump assembly Height control valve harness assembly Height control valve sub assembly 1 Hid & halogen type Hid type Ig1 relay Ig2 relay Igct main relay Inverter assembly w/ converter Inverter water pump motor assembly J/c a58 J/c a63 Led type Left fog light assembly Left headlight assembly Oil motor pump assembly Oil pump relay P24 P4 (left rear of luggage compt) P5 (right rear of luggage compt) Pnk Power back door unit assembly Rdi fan relay 1 Rdi fan relay 2 Right headlight assembly Rr def relay Skid control ecu assembly Smog ventilation sensor Stop light control relay assembly Towing converter Trailer hitch Windshield wiper motor assembly Wireless door lock buzzer Wp1 Y2 (center front of luggage compt) Yp1 Yp3 Yy1 Ground Distribution Wiring Diagram (2 of 5) for Lexus RX 450h 2012 List of elements for Ground Distribution Wiring Diagram (2 of 5) for Lexus RX 450h 2012: 80 (left side of dash) instrument panel j/b (left side of engine compt) j/c a57 & d41 A11 (right front of engine compt) A24 A25 A26 A27 A28 A30 A31 A57 A65 A68 A70 A71 A8 (left front of engine compt) A85 A91 A92 Acc1 relay Acc2 relay Af3 Af8 Air bag sensor assembly Bk/dr lock relay Blower w/ fan motor sub-assembly Brake fluid level warning switch Canister pump module Cooling fan ecu 1 Cooling fan ecu 2 D dr unlock relay D1 (left rear of engine) D3 (top of engine) D41 Da2 Dlc3 Door lock relay Dr unlock relay Ecm F10 F2 (left end of dash) F29 F5 (right kick panel) F57 Front power window regulator switch assembly Gf3 Halogen type Headlight cleaner control relay Headlight swivel ecu assembly Hid & halogen type Hid type I1 (right "b" pillar) If2 Ig1 relay 1 Ig1 relay 2 Ig1 relay 3 Ig1 relay 4 Ignition coil assembly Im1 J/c a67 Led type Left headlight assembly Level warning switch assembly Multiplex tilt & telescopic ecu Power steering converter assembly Power steering ecu assembly Right electrical key antenna Right fog light assembly Right front door w/ motor lock assembly Right front power window regulator motor assembly Right headlight assembly Right outer mirror control ecu assembly Seat belt control ecu Short connector Skid control ecu assembly Sliding roof control ecu Suspension control ecu Tg2 W/ motor compressor assembly G1 (under center floor console) Ground Distribution Wiring Diagram (3 of 5) for Lexus RX 450h 2012 List of elements for Ground Distribution Wiring Diagram (3 of 5) for Lexus RX 450h 2012: 77 (right "b" pillar) (w/ memory) left front position control ecu & switch assembly (w/o memory) left front power seat switch Battery cooling blower assembly center Battery voltage sensor Door control receiver Fuel lid courtesy switch Fuel pump & fuel sender gauge assembly G16 Height control valve harness assembly Height control valve sub- assembly 2 Hv battery junction block assembly Inter lock switch Inverter relay J/c a19 (under driver's seat) J/c g22 (center of dash) J/c o30 (right "d" pillar) J/c o31 (right "d" pillar) J/c p38 (left "d" pillar) J/c p65 (left "d" pillar) J/c z23 (under front passenger's seat) Junction connector Ko1 Left battery cooling blower assembly Left front power seat switch assembly Left front seat inner belt assembly Left rear combination light assembly Left rear door w/ motor lock assembly Left rear power window regulator motor assembly Left rear power window regulator switch assembly Left rear side marker light assembly Left seat back climate control blower Left seat cushion climate control blower assembly Left seat heater control sub- assembly Left seat variable cushion switch Lp1 Multi-display controller sub-assembly O18 O2 (right "c" pillar) Occupant detection ecu Og1 Oz1 Oz2 Oz7 P2 (left "b" pillar) P20 P21 P25 P26 P3 (left "c" pillar) P56 Pneumatic w/ tube tank assembly Pz1 Pa1 Qo1 Rear power point socket assembly Right battery cooling blower assembly Right front power seat switch Right front power seat switch assembly Right front seat inner belt assembly Right rear combination light assembly Right rear door w/ motor lock assembly Right rear power window regulator motor assembly Right rear power window regulator switch assembly Right rear side marker light assembly Right seat back climate control blower Right seat cushion climate control blower assembly Right seat heater control sub-assembly Right seat variable cushion switch Stereo component amplifier assembly Suspension control switch 2 Vo1 Voltage inverter assembly Wp1 Z30 Z34 Jp1 Ground Distribution Wiring Diagram (4 of 5) for Lexus RX 450h 2012 List of elements for Ground Distribution Wiring Diagram (4 of 5) for Lexus RX 450h 2012: 66 (w/ dynamic radar cruise control) driving support ecu assembly (w/ dynamic radar cruise control) millimeter wave radar sensor assembly (w/ navigation system) multi-display assembly (w/ navigation system) navigation receiver assembly (w/ navigation system) radio receiver assembly (w/ power back door) back door lock assembly (w/o navigation system) radio receiver assembly A47 Ab1 Ac1 Af2 Air bag sensor assembly Back door control switch Back door opener switch assembly Center stop light assembly Combination meter assembly Cruise control main switch assembly F1 (left kick panel) F16 F29 F3 (under center floor console) F40 F97 F98 Front power point socket assembly 1 Front power point socket assembly 2 G1 (under center floor console) Id code box Instrument panel j/b (left side of dash) J/c f92 J/c f93 (left side of dash) J/c y21 (right side of back door) J/c y23 J1 (left "b" pillar) Jn1 Left electrical key antenna Left front door w/ motor lock assembly Left front power window regulator motor assembly Left license plate light assembly Left outer mirror control ecu assembly Left rear light assembly Main body ecu Multiplex network master switch assembly Nca Option connector (check connector) Option connector (glass breakage sensor ecu assembly) Power management control ecu Power switch Rear window defogger Rear wiper motor & bracket assembly Right rear light assembly Seat heater switch Spiral cable (in steering column) Steering pad switch assembly Tire pressure warning ecu To j/c f65 & f66 (diagram 5 of 5) To j/c f94 (diagram 5 of 5) Transmission control switch Turn signal flasher assembly Windshield wiper switch assembly Y1 (center front of luggage compt) Y16 Y19 Y20 Yaw rate sensor assembly Yh1 Ground Distribution Wiring Diagram (5 of 5) for Lexus RX 450h 2012 List of elements for Ground Distribution Wiring Diagram (5 of 5) for Lexus RX 450h 2012: 66 A/c amplifier assembly Air fuel ratio sensor (bank 1 sensor 1) shield Air fuel ratio sensor (bank 2 sensor 1) shield Certification ecu assembly Clearance warning ecu assembly Combination meter assembly Crank position sensor shield D2 (top rear of engine) D4 (left front of engine compt) Dcm (telematics transceiver) Dlc3 Door control switch assembly F14 F15 F38 F50 F54 F58 F65 F66 From j/c f92 (diagram 4 of 5) From j/c f93 (diagram 4 of 5) Fs2 Fuel lid opener switch G13 G20 G21 Gf3 Glove box light assembly Gi1 Hazard warning signal switch assembly Headlight dimmer switch assembly Heater control panel (radio receiver assembly) Height control off switch Hf2 f66 Intake mass air flow meter sub-assembly shield J/c f65 & f66 (top center of dash) J/c f94 (right side of dash) J/c g20 & g21 (center of dash) J/c g22 (center of dash) Knock control sensor bank 1 & 2 shield Left visor assembly Light control rheostat Main body ecu Meter mirror sub- assembly Multi information display assembly Nca Option connector (remote engine starter) Overhead module Oxygen sensor (bank 1 sensor 2) shield Oxygen sensor (bank 2 sensor 2) shield Parking assist ecu Power back door main switch Power tilt motor Remote operation switch Right visor assembly Satellite switch set Shift lock control ecu sub-assembly Steering lock actuator assembly Steering sensor Suspension control switch Tg2 Throttle w/ motor body assembly shield Tire pressure warning reset switch Vsc off switch Water temperature switch
HEADLIGHTS Headlamps Wiring Diagram (1 of 2) for Lexus RX 450h 2012 List of elements for Headlamps Wiring Diagram (1 of 2) for Lexus RX 450h 2012: 90 (top center of dash) j/c f65 & f66 A11 A54 Acc Af2 Af3 Air conditioning system Altb Auto Automatic light control sensor (if equipped) (top right side of dash) Bcty Becu Canada Cann Canp Cltb Clte Clts Computer data lines system D/l altb fuse 25a D26 Dim Dimmer switch Drl Drl off Ecu-acc fuse 10a Ecu-b 1 fuse 10a Ecu-ig1 1 fuse 10a Engine room r/b assembly (on left side of engine compt) F10 F12 F13 F14 F19 F32 F37 F40 F65 F66 Ffgo Ffog Flash Flcy Fog light switch Fr fog fuse 15a Fr fog relay Frcy Gauge 2 fuse 7.5a Gnd1 Gnd2 H26 Head Headlamp dimmer switch assembly Hf1 High Hot at all times Hot in on or acc Hot in on or start Hrly Instrument panel j/b (left side of dash) Interior lights system J/c a58 (behind left headlight) J/c a67 (behind right headlight) J/c f66 (top center of dash) J/c f92 (under center console) J/c f93 (left side of dash) J/c f94 (right side of dash) Lcty Left fog light assembly Light control switch Llew Low Main body ecu (behind left side of dash) Off Parking brake switch (left end of dash) Pd fuse 50a Pkb Pnk Rcty Red Relay Right fog light assembly Rlew Tail Tail fuse 10a Trly Tsl Tsr Usa W/ drl Headlamps Wiring Diagram (2 of 2) for Lexus RX 450h 2012 List of elements for Headlamps Wiring Diagram (2 of 2) for Lexus RX 450h 2012: 51 (left side of dash) j/c f93 A11 A18 A19 A20 A26 A27 A28 A4 (left front of engine compt) A85 A86 B right headlight assembly (led type) Bi-xenon fuse 10a Bi-xenon relay (hid type) C13 Canh Canl Combination meter assembly Computer data lines system Control Dcdc fuse 150a Drl relay Ecu Engine room j/b assembly (left side of engine compt) Except hid type Except led type F16 H-lp lh hi fuse 15a H-lp lh lo fuse 15a H-lp rh hi fuse 15a H-lp rh lo fuse 15a Halogen type Head relay (ll) Head relay (rl) Hid type High Hot at all times Ig+ J/c a67 (behind right headlight) J/c f92 (under center console) Led type Left headlight assembly Light Light control Low Low (hid) Pnk Red Right headlight assembly Right headlight assembly (hid type) S left headlight assembly (led type)
HORN Horn Wiring Diagram for Lexus RX 450h 2012 List of elements for Horn Wiring Diagram for Lexus RX 450h 2012: 18 A42 C12 C15 Engine room j/b assembly (left side of engine compt) F24 F40 Horn Horn assembly (high pitch) (left front of engine compt) Horn assembly (low pitch) (right front of engine compt) Horn fuse 10a Horn relay Horn switch Hot at all times Instrument panel j/b (left side of dash) Main body ecu Red Spiral cable sub-assembly (in steering column) Steering pad switch assembly
INSTRUMENT CLUSTER Instrument Cluster Wiring Diagram (1 of 2) for Lexus RX 450h 2012 List of elements for Instrument Cluster Wiring Diagram (1 of 2) for Lexus RX 450h 2012: 71 A/b A54 A90 Af3 Af8 Canh Canl Chk Combination meter assembly Computer data lines system Da1 Dcm (telematics transceiver) (under center console) Down Engine controls system Engine oil pressure switch assembly (lower left front of engine) Enter Exterior lights system F15 F16 F40 F65 F66 F97 Fg1 Fs2 Fuel pump & fuel sender (top of fuel tank) G25 Gauge 2 fuse 7.5a Gf1 Gnd Hot in on or start Ig+ Ill- Instrument panel j/b (left side of dash) Interior lights system J/c f65 & f66 (top center of dash) J/c f92 (under center console) J/c f93 (left side of dash) Menu Mssl Navigation receiver assembly O15 O33 Of3 Pblt Pf4 Pnk Power management control ecu (left side of dash) Radio receiver assembly Red Rhdw Rhup Right steering pad switch Skid control ecu assembly (right side of dash) Sound systems Sp1 Spd Spdi Spdp Spiral cable sub-assembly (in steering column) Steering pad switch assembly Stereo component amplifier assembly (luggage compt) Tws2 Tx+ W/ navigation W/o navigation Water temperature switch (under front center of vehicle) Windshield wiper switch assembly Wiper/washer system Wlvl Jp1 Instrument Cluster Wiring Diagram (2 of 2) for Lexus RX 450h 2012 List of elements for Instrument Cluster Wiring Diagram (2 of 2) for Lexus RX 450h 2012: 83 A30 A51 Acc Back door lock assembly (lower center of back door) Back door lock assembly (w/o power back door) (lower center of back door) Bcty Canh Canl Cann Canp Computer data lines system Cty D26 D39 Ecu-acc fuse 10a Ecu-b 1 fuse 10a Engine hood courtesy switch (center front of engine compt) Engine room r/b assembly (on left side of engine compt) F12 F13 F14 F23 F32 F40 F65 Flcy Frcy Ful Gauge 1 fuse 10a Gnd2 H26 Hcty Hdd Hdu Hf2 Hot at all times Hot in on or acc Hot in on or start Hud Hudd Hudo Hudu Ild Ill+ Ill- Ilu Instrument panel j/b (left side of dash) Interior lights system J/c a63 (left side of dash) J/c f65 & f66 (top center f66 J/c f66 (top center of dash) J/c f92 (under center console) J/c f93 (left side of dash) J/c f94 (right side of dash) J/c p39 (left "d" pillar) J/c p40 (left "d" pillar) J/c y23 (left side of back door) Lcty Left front door courtesy light switch assembly (at left "b" pillar) Left rear door courtesy light switch assembly (at left rear "c" pillar) Main body ecu Meter mirror sub-assembly (left side of dash) Mpx1 Mpx2 Of dash) Of1 Of2 P4 (left rear of luggage compt) Parking brake switch assembly (left end of dash) Pf1 Pf4 Pkb Pnk Power back door unit assembly (if equipped) (left rear of roof) Rcty Red Right front door courtesy light switch assembly (at right "b" pillar) Right rear door courtesy light switch assembly (at right rear "c" pillar) Satellite switch set Tx- Yp1 Yp2 Yy1
INTERIOR LIGHTS Courtesy Lamps Wiring Diagram (1 of 2) for Lexus RX 450h 2012 List of elements for Courtesy Lamps Wiring Diagram (1 of 2) for Lexus RX 450h 2012: 87 (left front of luggage compt) j/c o28 & p36 +b1 Acc Altb Bcty Becu Canh Canl Cann Canp Cill Computer data lines system Cspt Cty D/l alt b fuse 25a D11 D12 D13 D23 D26 Dmdr Dmon Dome fuse 10a Door Ecu- acc fuse 10a Ecu- b 1 fuse 10a Ecu- ig1 1 fuse 10a Engine room r/b assembly (on left side of engine compt) F12 F13 F14 F40 Flcl Flcy Frcl Frcy Gf1 Gf3 Gnd Gnd1 H21 H23 H24 H26 Hot at all times Hot in on or acc Hot in on or start Htr- If1 Ile Illb Instrument panel j/b (left side of dash) J/c f92 (under center console) J/c f93 (left side of dash) J/c p39 (left "d" pillar) Jf2 Ko1 Lcty Lcyl Left front courtesy light assembly Left front door courtesy light switch (at left "b" pillar) Left outer mirror control ecu assembly (in left front door) Left outer rear view mirror assembly (on left front door) Left rear door courtesy light switch (at left rear "c" pillar) Lill Main body ecu O28 Of1 Of2 Overhead module P36 Pf1 Pf4 Pnk Rcty Rcyl Red Rgnd Right front courtesy light assembly Right front door courtesy light switch (at right "b" pillar) Right rear courtesy light assembly Right rear door courtesy light switch (at right rear "c" pillar) Rrmp Shft Sport light assembly Tg1 Tg2 Courtesy Lamps Wiring Diagram (2 of 2) for Lexus RX 450h 2012 List of elements for Courtesy Lamps Wiring Diagram (2 of 2) for Lexus RX 450h 2012: 36 Back door courtesy light assembly Back door lock assembly (lower center of back door) Cann Canp Computer data lines system Ctyo Diode (back door) F20 F48 Footwell Htr- J/c o29 & p37 (left front of luggage compt) J/c p40 (left "d" pillar) Left interior illumination light assembly 1 Left rear courtesy light assembly Left room light assembly 2 Left vanity light assembly Left visor assembly Lp1 O29 Op2 P37 P4 (left rear of luggage compt) Pnk Power back door unit assembly (left rear of roof) Red Right interior illumination light assembly 1 Right outer mirror control ecu assembly (in right front door) Right outer rear view mirror assembly (on right front door) Right room light assembly 2 Right vanity light assembly Right visor assembly W/ power back door W/o power back door Yp1 Yy1 Instrument Illumination Wiring Diagram (1 of 2) for Lexus RX 450h 2012 List of elements for Instrument Illumination Wiring Diagram (1 of 2) for Lexus RX 450h 2012: 83 A54 A55 Acan Acc Adim Altb Auto Becu Canh Canl Computer data lines system Console box illumination light assembly D/l alt b fuse 25a Dcdc fuse 150a Distance control Door control switch assembly Ecu- acc fuse 10a Ecu- ig1 1 fuse 10a Ecu-b 1 fuse 10a Engine room r/b assembly (on left side of engine compt) Enter F13 F14 F40 F63 F64 Fg1 Front wiper deicer switch G1 (under center floor console) G20 G21 Gauge 2 fuse 7.5a Gf2 Gf3 Glove box light assembly Gnd1 Gi1 Hazard warning signal switch assembly Head Headlight dimmer switch assembly Heater control panel (radio receiver assembly) Hook Hot at all times Hot in on or acc Hot in on or start Ill Ill+ Ill- Instrument panel j/b (left side of dash) J/c f63 & f64 (left side of dash) J/c f66 (top center of dash) J/c f92 (under center console) J/c f93 (left side of dash) J/c f94 (right side of dash) J/c g20 & g21 (center of dash) J/c g22 (center of dash) Left steering pad switch Light control switch Main body ecu Menu Mode Monitor Multi information display assembly (w/o navigation) Multi- display assembly Navigation receiver assembly (w/ navigation) Off (canada) drl off (usa) Panel fuse 10a Pnk Red Remote operation switch Right steering pad switch Seek Spiral cable sub-assembly (in steering column) Steering pad switch assembly Swg Tail Tail relay Trly Ug1 Voice Volume W/ navigation W/o navigation Instrument Illumination Wiring Diagram (2 of 2) for Lexus RX 450h 2012 List of elements for Instrument Illumination Wiring Diagram (2 of 2) for Lexus RX 450h 2012: 62 (top center of dash) (under center console) A/b Adim Canh Canl Certification ecu assembly (right side of dash) Combination meter assembly Computer data lines system Dcm (telematics transceiver) Down F15 F16 F58 F63 F64 F65 F66 Fg1 Front power window regulator switch assembly Fuel lid opener switch G12 G25 Gf2 Gf3 Headlight cleaner switch assembly If1 Ig+ Ill+ Ill- J/c f63 & f64 (left side of dash) J/c f65 & f66 (top center of dash) J/c f66 J/c f92 (under center console) J/c f93 (left side of dash) J/c f94 (right side of dash) J/c g22 (center of dash) J/c o30 (right "d" pillar) J/c o31 (right "d" pillar) Jf2 Light control rheostat Multiplex network master switch assembly Odo trip Of1 Pnk Power switch Radio receiver assembly Red Rhdw Rhup Satellite switch set Seat heater switch Shift position indicator Suspension control switch Suspension control switch 2 Swg Swil Tail Vsc off switch W/ navigation W/o navigation Windshield wiper switch assembly
MEMORY SYSTEMS Driver"s Memory Seat Wiring Diagram for Lexus RX 450h 2012 List of elements for Driver"s Memory Seat Wiring Diagram for Lexus RX 450h 2012: 54 (in left front door) left outer mirror control ecu assembly (under driver's seat) j/b a19 Back Buckle switch Cann Canp Computer data lines system Csnf Csnr Ecu-b 1 fuse 10a Engine room r/b assembly (on left side of of engine compt) F40 Frv+ Frv- Fwd Gnd H13 H14 Hot at all times Instrument panel j/b (left side of dash) J/b a18 (under driver's seat) J/c a19 (under driver's seat) Left front lumbar support forward & back motor assembly (in driver's seat back) Left front position control ecu & switch assembly (left side of driver's seat cushion) Left front power seat cushion control motor assembly (under driver's seat) Left front power seat lift position motor assembly (under driver's seat) Left front power seat reclining position motor assembly (in driver's seat back) Left front power seat slide position motor assembly (under driver's seat) Left front power seat vertical position motor assembly (under driver's seat) Left front seat inner belt assembly (under driver's seat) Left front seat outer belt assembly (base of left "b" pillar) Left power seat front switch assembly Left seat variable cushion switch Lft+ Lft- Mswe O/p P-seat lh fuse 30a P2 (left "b" pillar) Pbcl Pnk Prdc Pvcc Pa1 Rcl+ Rcl- Red Seat memory switch Set Sgnd Sld+ Ssrs Sysb Vcc Memory Mirrors Wiring Diagram for Lexus RX 450h 2012 List of elements for Memory Mirrors Wiring Diagram for Lexus RX 450h 2012: 81 (in right front door) 12v A11 A14 A37 A38 Bdr Canh Canl Cann Canp Certification ecu assembly (right side of dash) Computer data lines system Cpub D21 D27 D39 Ec+ Ec- Eci+ Eci- Ecu-b 1 fuse 10a Ecu-b 2 fuse 7.5a Ecu-ig1 fuse 10a Engine room r/b assembly (on left side of engine compt) Exterior lights system F1 (left kick panel) F11 F14 F40 F5 (right kick panel) F58 Fl door fuse 25a Fr door fuse 25a Gnd Hot at all times Hot w/ ig1 1 relay energized Hssr Htr+ Htr- If1 If2 Instrument panel j/b (left side of dash) J/c f93 (left side of dash) J/c f94 (right side of dash) Jf1 Jf2 Le1 Left outer mirror control ecu assembly (in left front door) Left outer rear view mirror assembly (in left front door) Lin2 Lm+r Lmhr Lmvr Lvc Main body ecu Mirror adjust switch Mirror auto retract switch Mirror retract switch Mirror select switch Mirrors system Mr+ Mr- Mswe Multiplex network master switch assembly Pnk Re1 Red Right outer mirror control ecu assembly Right outer rear view mirror assembly (in right front door) Rm+r Rmhr Rmvr Rvc Seat memory switch Set Sig Trn+ Trn- Trni Vssr Memory Power Tilt & Power Telescopic Wiring Diagram for Lexus RX 450h 2012 List of elements for Memory Power Tilt & Power Telescopic Wiring Diagram for Lexus RX 450h 2012: 71 Buckle switch Canh Canl Cann Canp Certification ecu assembly (right side of dash) Computer data lines system Cpub D30 D39 Data Door control receiver (right "c" pillar) Ecu ig1 1 fuse 10a Ecu-b 1 fuse 10a Ecub Engine room r/b assembly (on left side of engine compt) F1 (left kick panel) F14 F35 F38 F40 F58 Flcy Gnd H26 Headlamp dimmer switch assembly Hot at all times Hot w/ ig1 1 relay energized Instrument panel j/b (left side of dash) J/b a19 (under driver's seat) J/b f94 (right side of dash) J/c f66 (top center of dash) J/c f92 (under center console) J/c f93 (left side of dash) J/c o31 (right "d" pillar) J/c p39 (left "d" pillar) Jf2 Left front door courtesy light switch assembly (at left "b" pillar) Left front position control ecu & switch assembly (left side of driver's seat cushion) Left front seat inner belt assembly (under driver's seat) Left outer mirror control ecu assembly (in left front door) Main body ecu Msw Mswe Multiplex tilt & telescopic ecu (at base of steering column) P2 (left "b" pillar) Pbcl Pnk Power tilt motor (on steering column) Rco Rda Red Rssi Seat memory switch Set Telesco short Telesco stretch Telescopic motor Telescopic sensor Tem+ Tem- Tes Ti & te fuse 30a Tilt & telescopic switch Tilt down Tilt up Tim+ Tim- Tis Vce Vci
NAVIGATION Navigation Wiring Diagram (2 of 5) for Lexus RX 450h 2012 List of elements for Navigation Wiring Diagram (2 of 5) for Lexus RX 450h 2012: 66 (or red) (under rear of center console) (if equipped) multi-media interface ecu Acc Computer data lines system F40 Front speaker assembly 4 G1 (under center floor console) G28 Gf2 Gnd Gnd1 Gvif Hf1 If2 Ill Interior lights system Jf1 Left front speaker assembly 2 Left front speaker assembly 3 Left steering pad switch Mode Multi-display assembly Nca Ntsc Of2 Of3 Off hook Og1 On hook Op2 Pnk Rear speaker assembly 3 Red Right front speaker assembly 2 Right front speaker assembly 3 Right steering pad switch Seek+ Seek- Spiral cable sub-assembly (in steering column) Steering pad switch assembly Twl+ Twl- Twr+ Twr- Tx+ Tx- Tx1+ Tx1- U12 Ug1 Ugd1 Ulo+ Uro+ Usd1 Vmt1 Voice Volume + Volume - W/ lexus enform pnk W/ parking assist W/o lexus enform W/o parking assist Wf1+ Wf1- Wf2+ Wf2- Navigation Wiring Diagram (3 of 5) for Lexus RX 450h 2012 List of elements for Navigation Wiring Diagram (3 of 5) for Lexus RX 450h 2012: 88 (right side of dash) parking assist ecu +b2 Acc Af10 Agnd Computer data lines system Ctr+ Ctr- F54 F90 F91 Fg2 Fg3 Fl+ Fl- Fr+ Fr- G23 G24 G29 G30 Gf3 Gnd Gnd2 Gvif If2 Instrument cluster system J/c o31 (right "d" pillar) Jf1 Left front speaker assembly 1 Mi+ Mi- Mo+ Mo- Navigation receiver assembly Nca O15 O16 O17 O18 Of2 Og1 Og2 Pnk Red Right front speaker assembly 1 Rl+ Rl- Rr+ Rr- Sl+ Sl- Sldi Sldo Spd Sr+ Sr- Stereo component amplifier (luggage compt) Tmut Tx+ Tx- Txm+ Txm- Usb Usbg Usbv Va- Val+ Var+ Vmtr Vor+ Vor- Vot+ Vot- W/ parking assist W/ rear seat entertainment system W/o parking assist W/o rear seat entertainment system Wf1+ Wf1- Wf2+ Wf2- Wfl+ Wfl- Wfr+ Wfr- Wui Wuo Navigation Wiring Diagram (4 of 5) for Lexus RX 450h 2012 List of elements for Navigation Wiring Diagram (4 of 5) for Lexus RX 450h 2012: 57 (center of dash) j/c g21 (center of dash) j/c g22 (or red) +tw -tw Acc Agnd Ali Alo Ari Aro Asgn Auxi Auxo Combination meter assembly F16 G1 under center floor console) G13 G14 Gf3 Gnd Ill+ Ill- Interior lights system J/c f66 (top center of dash) J/c f92 under center console Ko1 Left quarter side speaker assembly (w/ 15 speaker) Left rear speaker assembly Left rear speaker assembly 2 Lp1 Mi+ Mi- Mo+ Mo- Nca Ntsc Op2 Pblt Pnk Radio receiver assembly Red Remote operation switch Right quarter side speaker assembly (w/ 15 speaker) Right rear speaker assembly Right rear speaker assembly 2 Sld Sldi Sldo Stereo jack adapter assembly 1 Stereo jack adapter assembly 1 (w/ multi-media interface ecu) Ug2 Ug3 W/ multi-media interface ecu W/o multi-media interface ecu Wui Wuo Parking Assistant Wiring Diagram for Lexus RX 450h 2012 List of elements for Parking Assistant Wiring Diagram for Lexus RX 450h 2012: 86 A29 A33 Acc Af2 Af5 Bbz Blsw Canh Canl Cb+ Cgnd Clearance warning buzzer 1 (center of dash) Computer data lines system Csb1 Csb2 Csg1 Csg2 Cv+ Cv- Ecu ig1 2 fuse 10a Engine room r/b assembly (on left side side of engine compt) F40 F54 F55 F65 F66 F90 F91 Fg1 Fg2 Fg3 G1 (under center floor console) G21 G28 G29 Gf1 Gf3 Gnd1 Gvif Hot at all times Hot in on or acc Hot in on or start If2 Instrument panel j/b (left side of dash) J/c f65 & f66 (top center of dash) J/c f92 (under center console) J/c g20 & g21 (center of dash) g20 Left steering pad switch Left ultrasonic sensor 1 (left front corner of engine compt) Left ultrasonic sensor 2 (behind rear bumper) Left ultrasonic sensor 3 (behind rear bumper) Lin1 Lin2 Monitor Multi-display controller sub-assembly (under center console) Navigation receiver assembly Nca Of2 Og2 Op1 Parking assist ecu (right side of dash) Pnk Rad 1 fuse 10a Rad 3 fuse 15a Radio 2 fuse 7.5a Rear television camera assembly (lower center of back door) Red Red cv+ Right ultrasonic sensor 1 (right front corner of engine compt) Right ultrasonic sensor 2 (behind rear bumper) Right ultrasonic sensor 3 (behind rear bumper) Scb+ Scv+ Scv- Sgnd Side television camera assembly (front passenger's door) Spiral cable sub-assembly (in steering column) Steering pad switch assembly Swg Tx+ Tx- Tx1+ Tx1- Vo1 Xv1 Yp2 Rear Sonar Wiring Diagram for Lexus RX 450h 2012 List of elements for Rear Sonar Wiring Diagram for Lexus RX 450h 2012: 38 A33 A81 Af5 Bbz Bof Bor Ca2h Ca2l Clearance warning buzzer 1 (center of dash) Clearance warning ecu assembly (right side of dash) Computer data lines system Da2 Ecu ig1 2 fuse 10a Engine room r/b 2 (left rear of engine compt) F97 Hot in on or start Hot w/ igct main relay energized Igct 3 fuse 10a Instrument panel j/b (left side of dash) J/c a62 (left side of dash) J/c f92 (under center console) J/c f93 (left side of dash) J/c f94 (right side of dash) Left ultrasonic sensor 1 (left front corner of engine compt) Left ultrasonic sensor 2 (behind rear bumper) Left ultrasonic sensor 3 (behind rear bumper) Of2 Pnk Power management control ecu (left side of dash) Red Right ultrasonic sensor 1 (right front corner of engine compt) Right ultrasonic sensor 2 (behind rear bumper) Right ultrasonic sensor 3 (behind rear bumper) Shift lever position sensor (on transmission) Sof Sor Vo1 Xv1 Rear View Monitoring Wiring Diagram for Lexus RX 450h 2012 List of elements for Rear View Monitoring Wiring Diagram for Lexus RX 450h 2012: 44 (under center console) j/c f92 A18 A80 Ap2 Bk/up lp fuse 7.5a Bk/up lp relay Cb+ Cgnd Cv+ Cv- Ec+ Ec- Ecu ig1 3 fuse 10a Engine room r/b 2 (left rear of engine compt) Engine room r/b assembly (on left side of engine compt) Exterior lights system Gf1 Gnd Gnd1 Headlights system Hot in on or start Ig1 Inner rear view mirror assembly Instrument panel j/b (left side of dash) J/c a63 (left side of dash) J/c p36 & o28 (left rear of vehicle) Lin Mirrors system Nca O28 Og1 Og2 Op1 Overhead module P36 Pnk Power management control ecu (left side of dash) Rear television camera assembly (lower center of back door) Red Red cv+ Rev Tg1 Tg2 Yp2 Telematics Wiring Diagram for Lexus RX 450h 2012 List of elements for Telematics Wiring Diagram for Lexus RX 450h 2012: 95 A28 A53 Acc Af2 Air bag sensor assembly Backup battery (mayday battery) (right side of dash) Bbi+ Bbi- Bbo+ Bbo- Btr1 Btr2 Computer data lines system Ctr1 Ctr2 Dcm (telematics transceiver) (under center console) Ecu ig2 fuse 10a Engine room r/b assembly (on left side of engine compt) F29 Fg1 Fr+ Fr- G10 G25 G30 G34 Gf1 Gf2 Gf3 Gnd3 Gps antenna Gsw Gsw3 Hot at all times Hot in on or acc Hot in on or start If2 Ig2 Ill+ Ind1 Ind2 Instrument cluster system Instrument panel j/b (left side of dash) Interior lights system J/c f66 (top center of dash) J/c f92 (under center console) J/c g22 (center of dash) Macc Mayday/tel fuse 7.5a Mci+ Mci- Mco+ Mco- Mcvd Min+ Min- Mute Navigation receiver assembly Nca O15 O17 Og1 Overhead module Pnk Radio 2 fuse 7.5a Radio receiver assembly Red Right front speaker assembly 2 Right front speaker assembly 3 Rrid Sgnd Sig- Sig1 Sil Sled Spdp Spi+ Spi- Spo+ Spo- Stereo component amplifier (luggage compt) Telephone antenna Tg2 Tmut Twr+ Twr- Usb Usbg Usbv Vor+ Vor- Vot+ Vot- W/ navigation W/o navigation
PASSIVE RESTRAINTS Passive Restraints Wiring Diagram for Lexus RX 450h 2012 List of elements for Passive Restraints Wiring Diagram for Lexus RX 450h 2012: 25 Buckle switch Ecu ig1 2 fuse 10a H29 H30 Hot in on or start Instrument panel j/b (left side of dash) J/c a19 (under driver's seat) J/c p36 & o28 (left front of luggage compt) J/c z23 (under front passenger's seat) Left front position control ecu & switch assembly (left side of driver's seat cushion) Left front seat inner belt assembly (under driver's seat) Left front seat outer belt assembly (base of left "b" pillar) O28 O3 (right "b" pillar) Oz1 P2 (left "b" pillar) P36 Pbcl Pnk Prdc Pa1 Right front seat inner belt assembly (under front passenger's seat) Right front seat outer belt assembly (base of right "b" pillar) W/ memory W/o memory
POWER DISTRIBUTION Power Distribution Wiring Diagram (1 of 4) for Lexus RX 450h 2012 List of elements for Power Distribution Wiring Diagram (1 of 4) for Lexus RX 450h 2012: 73 Af5 Air conditioning system Air sus fuse 50a Air sus relay Am2 fuse 7.5a Amp1 fuse 30a Amp2 fuse 30a Anti-lock brakes system Anti-theft & door locks systems Battery Capacitor fuse 10a Cooling fans & air conditioning systems Dcdc fuse 150a Dcdc-s fuse 7.5a Deicer fuse 25a Deicer relay Dome fuse 10a Door locks & anti-theft systems Ecu-b 1 fuse 10a Ecu-b 2 fuse 7.5a Efi 1 fuse 10a Efi main fuse 30a Efi main relay Electronic power steering system Electronically controlled brake system 1 fuse 50a Engine controls system Engine room j/b assembly (left side of engine compt) Engine room r/b assembly (on left side of engine compt) Eps fuse 80a Etcs fuse 10a Exterior lights system Exterior lights, shift interlock & engine controls systems From a short pin (diagram 1 of 4) Fuse box (rear of luggage compt) Fusible link block assembly (left rear of luggage compt) G19 G20 H-lp cln fuse 30a Haz fuse 15a Heater fuse 50a Ig1 main fuse 30a Ig2 main fuse 30a Immobi fuse 7.5a Interior lights system Ip j/b fuse 25a Main fuse 180a Navigation & sound systems Nca P67 Pbd fuse 30a Pnk Rad 1 fuse 10a Rad 3 fuse 15a Rdi fan 1 fuse 40a Rdi fan 2 fuse 40a Red Rr def fuse 50a Rr def relay Rr-b fuse 50a Short pin Sound systems Stop fuse 7.5a Str lock fuse 20a To dcdc fuse (diagram 1 of 4) To hv r/b 2 fuse (diagram 2 of 4) To ig1 relay (diagram 2 of 4) To ig2 relay (diagram 2 of 4) To instrument panel j/b (diagram 3 of 4) To j/c f63 & f64 (diagram 4 of 4) Towing fuse 30a Trunk, tailgate, fuel doors system Trunk, tailgate, fuel doors, memory, instrument cluster, body computer, anti-lock brakes, garage door opener, anti-theft, door locks & electronic power steering systems Wiper/ washer system Power Distribution Wiring Diagram (2 of 4) for Lexus RX 450h 2012 List of elements for Power Distribution Wiring Diagram (2 of 4) for Lexus RX 450h 2012: 59 (left side of dash) instrument panel j/b A/c w/p fuse 10a A/f fuse 20a A/f relay A26 A49 A53 A54 Afs fuse 7.5a Air conditioning & navigation systems Air conditioning system Anti-lock brakes system Batt fan fuse 15a Bi-xenon relay Bk/up lp fuse 7.5a Defogger & air conditioning systems Drl relay Ecu ig1 fuse 10a Ecu ig2 fuse 10a Electronically controlled brake system 2 fuse 50a Electronically controlled brake system main 1 fuse 10a Electronically controlled brake system main 2 fuse 10a Electronically controlled brake system main 3 fuse 15a Engine controls & anti-lock brakes systems Engine controls system Engine room r/b 3 (left side of engine compt) Engine room r/b assembly (on left side of engine compt) Exterior lights system F12 F30 From b rad 1 fuse (diagram 1 of 4) From gauge 2 fuse (diagram 2 of 4) From ig1 main fuse (diagram 1 of 4) From ig2 main fuse (diagram 1 of 4) Gauge 2 fuse 7.5a Head relay (ll) Head relay (rl) Headlights system Heater 2 fuse 7.5a Horn fuse 10a Horn relay Hv r/b 1 fuse 30a Hv r/b 2 fuse 80a Ig1 relay Ig2 relay Ign fuse 10a Instrument cluster, anti-theft, shift interlock & door locks systems J/c a63 (left side of dash) Mayday/ tel fuse 7.5a Navigation system Oil pmp fuse 10a Pd fuse 50a Pnk Red S-horn fuse 7.5a S-horn relay To ig2 relay (diagram 2 of 4) To instrument panel j/b (diagram 3 of 4) To power management control ecu (diagram 4 of 4) Power Distribution Wiring Diagram (3 of 4) for Lexus RX 450h 2012 List of elements for Power Distribution Wiring Diagram (3 of 4) for Lexus RX 450h 2012: 92 (left side of dash) instrument panel j/b A10 A17 A18 A19 A20 A27 A28 A29 A30 A32 A33 A37 A38 A39 A55 Acc Acc1 relay Acc2 relay Anti-lock brakes system Cig fuse 15a D10 D15 D16 D29 D30 D31 D40 Defogger & air conditioning systems Ecu ig1 1 fuse 10a Ecu ig1 3 fuse 10a Ecu-ig1 2 fuse 10a Electronic power steering system Exterior lights & headlights systems Exterior lights system F14 F39 F5 (right kick panel) Fr wash fuse 25a Fr wip fuse 30a From engine room r/b assembly (diagram 1 of 4) From ig1 relay (diagram 2 of 4) Front power point socket assembly Front power point socket assembly 1 Gauge 1 fuse 10a H12 H29 H30 H32 H35 Heater fuse 10a Ig1 1 relay Ig1 2 relay Ig1 3 relay Ig1 4 relay Interior lights system J/c f92 (under center console) Lh s-htr fuse 15a Main body ecu Mirrors & memory systems Navigation system Navigation, sound, exterior lights & instrument cluster systems P/point fuse 15a P2 (left "b" pillar) Panel fuse 10a Passive restraint system Pf4 Pnk Power tops, mirrors & navigation systems Radio 2 fuse 7.5a Rear power point socket assembly Red Rh s-htr fuse 15a Rr wash fuse 20a Rr wip fuse 15a Seats system Shift interlock system Sound & navigation systems Sound systems Tail fuse 10a Tail relay To d/l alt b fuse (diagram 4 of 4) To ecu-acc fuse (diagram 4 of 4) To j/c f94 (diagram 4 of 4) To power management control ecu (diagram 4 of 4) Transmissions system Trly Trunk, tailgate, fuel doors system Uf1 Warning system Wiper/ washer & seats systems Wiper/washer system Power Distribution Wiring Diagram (4 of 4) for Lexus RX 450h 2012 List of elements for Power Distribution Wiring Diagram (4 of 4) for Lexus RX 450h 2012: 86 (left side of dash) instrument panel j/b (not used) A11 A12 A14 A50 A51 A52 A81 Ac1 Ac2 Acc Acc1 Acc2 Accd Air conditioning, navigation & sound systems Air sus fuse 20a Alt b Am21 Am22 Bk/dr lock relay Computer data lines system D/l alt b fuse 25a D/l source relay D24 Dr lock fuse 10a E01 E02 E12 Ecu-acc fuse 10a Electronic suspension system F1 (left kick panel) F63 F64 F97 F98 Fl door fuse 25a Fr door fuse 25a Fr fog fuse 15a Fr fog relay From acc1 relay l (diagram 3 of 4) From acc2 relay (diagram 3 of 4) From am2 fuse (diagram 1 of 4) From ecu ig1 3 (diagram 3 of 4) From ig1 1 relay (diagram 3 of 4) From ig2 relay (diagram 2 of 4) From k acc1 relay (diagram 3 of 4) Fuel opn fuse 7.5a Gnd H13 H18 Ig1d Ig2d Instrument cluster system Inverter fuse 20a Inverter relay (left 'c' pillar) J/c f63 & f64 (left side of dash) J/c f92 (under center console) J/c f93 (left side of dash) J/c f94 (right side of dash) J/c p38 (left "d" pillar) Main body ecu Memory systems Mirrors, memory & power windows systems Obd fuse 7.5a P-seat lh fuse 30a P-seat rh fuse 30a P3 (left "c" pillar) Pf1 Power management control ecu (left side of dash) Power outlet socket assembly Power switch Power tops system Power windows system Psb fuse 30a Red Rl door fuse 25a Rr door fuse 25a S/roof fuse 30a Seats system Ssw1 Ssw2 Ti & te fuse 30a Trunk, tailgate, fuel doors system Uf1 Voltage inverter (left side of cargo area)
POWER DOOR LOCKS Power Door Locks Wiring Diagram (1 of 5) for Lexus RX 450h 2012 List of elements for Power Door Locks Wiring Diagram (1 of 5) for Lexus RX 450h 2012: 93 (right "b" pillar) Acc Act+ Act- Actd Actg Altb Back door lock assembly (w/o power back door) (lower center of back door) Bcty Bzr Canh Canl Computer data lines system D dr unlock relay D/l altb fuse 25a D/l source relay D12 D13 D26 D27 D35 D36 Detection unlock Door lock relay Dr unlock relay Ecu-acc fuse 10a Ecu-igi 1 fuse 10a Exterior lights system F1 (left kick panel) F12 F13 F14 F22 F23 F24 F25 F37 F5 (right kick panel) F65 F66 Flcy Frcy Gf1 Gnd2 H10 H23 H24 H26 H27 Haz Hcty Headlights system Horn Horns system Hot at all times Hot w/ acc1 relay energized Hot w/ ig1 1 relay energized Hrly Hzsw Ile Ind Instrument panel j/b (left side of dash) Interior lights system J/c f65 & f66 (top center of dash) J/c f92 (under center console) J/c p40 (left "d" pillar) Jf1 Jf2 Ko1 Lcty Left front door lock motor (in driver's door) Lin2 Lock key Lsfl Lsfr Lswl Lswr Main body ecu (behind left side of dash) Of1 Of2 P4 (left rear of luggage compt) Pf4 Pnk Rcty Red Right rear door courtesy light switch (at right rear "c" pillar) Right rear door lock motor (in right rear door) Trly Ul1 Ul3 Unlock key Yp1 Ypy1 Power Door Locks Wiring Diagram (2 of 5) for Lexus RX 450h 2012 List of elements for Power Door Locks Wiring Diagram (2 of 5) for Lexus RX 450h 2012: 32 (center front of engine compt) engine hood courtesy switch (center of dash) j/c g22 (left side of engine compt) wireless door lock buzzer (top center of dash) j/c f66 D21 Detection unlock Ecu-b 2 fuse 7.5a Engine room r/b assembly (on left side of engine compt) F11 F5 (right kick panel) Front power window regulator switch assembly Gf3 Heater control panel (radio receiver assembly) Hot at all times If1 If2 Instrument panel j/b (left side of dash) Ip j/b fuse 25a J/c a63 (left side of dash) J/c f92 (under center console) J/c p39 (left "d" pillar) Left front door courtesy light switch (at left "b" pillar) Left rear door courtesy light switch (at left rear "c" pillar) Lock Pf1 Pnk Red Right front door lock motor (in front passenger's door) Security ind Stop fuse 7.5a Stop light switch assembly (on brake pedal bracket) Unlock Power Door Locks Wiring Diagram (3 of 5) for Lexus RX 450h 2012 List of elements for Power Door Locks Wiring Diagram (3 of 5) for Lexus RX 450h 2012: 77 +b1 +b2 12v A80 A81 Air conditioning system Clk Clk+ Clk- Computer data lines system Cruise control system Detection unlock Door lock control switch Drn2 Engine controls system Engine room r/b 2 (left rear of engine compt) Ep1 Ep2 Eti Exterior lights system Fctl Gmt Gmtg Hot w/ igct main relay energized Hsdn Htm+ Htm- Ig2 Ig2d Igct 3 fuse 10a Ilk Ite Iwp J/c a61 (left side of dash) J/c a62 (left side of dash) J/c f93 (left side of dash) J1 (left "b" pillar) Jf1 Jf2 Left rear door lock motor (in left rear door) Lin1 Lp1 Mmt Mmtg Mrel Mth+ Mth- Multiplex network master switch assembly Nca Niwp Nodd Of1 Opm1 Opm2 Opst P2 (left "b" pillar) Pnk Power distribution system Power management control ecu (left side of dash) Red Req+ Req- Right front door courtesy light switch (at right "b" pillar) Rmt Rmtg Si1 Si2 Sio St1- Stb Stp Transmissions system Vcp1 Vcp2 Vlo Vpa1 Vpa2 Power Door Locks Wiring Diagram (4 of 5) for Lexus RX 450h 2012 List of elements for Power Door Locks Wiring Diagram (4 of 5) for Lexus RX 450h 2012: 81 (left kick panel) f1 Abfs Accd Af5 Agnd Am2 fuse 7.5a Am21 Am22 Antenna coil Anti-theft system Bth+ Bth- Ca1h Ca1l Ca2h Ca2l Ca3n Ca3p Canh Canl Ccs Code Combination meter assembly Computer data lines system Cruise control system Drn4 E01 E02 E12 Ecu-b 1 fuse 10a Electronic power steering system Engine controls system Engine room j/b assembly (left side of engine compt) Engine room r/b assembly (on left side of engine compt) Ethb F15 F16 F63 F64 F97 F98 Gnd Hot at all times Ig1d Imi Immobi fuse 7.5a Imo Inds Indw J/c f63 & f64 (left side of dash) J/c f92 (under center console) J/c f93 (left side of dash) Lin2 Nca Pnk Power distribution system Power management control ecu (left side of dash) Power switch Psok Red S-horn fuse 7.5a S-horn relay Security horn assembly (left front of engine compt) Sftd Sftu Shift interlock system Slp Slr+ Smrb Smrg Smrp Spdi Ss1 Ss2 Ssw1 Ssw2 Swil Thb Transmissions system Txct Vc5 Power Door Locks Wiring Diagram (5 of 5) for Lexus RX 450h 2012 List of elements for Power Door Locks Wiring Diagram (5 of 5) for Lexus RX 450h 2012: 81 (driver's door outside handle) left electrical key antenna (left kick panel) f1 (left side of dash) j/c f93 (under center console) front indoor electrical key oscillator A16 A54 Agnd Ant1 Ant2 Anti-theft system Canh Canl Certification ecu assembly (right side of dash) Cg1b Cg2b Cg5b Cg6b Cg7b Cg8b Clg1 Clg2 Clg3 Clg4 Clg5 Clg6 Clg7 Clg8 Clgb Code Computer data lines system Cutb D39 Data Door control receiver (right "c" pillar) Ecu ig2 fuse 10a F12 F18 F40 F5 (right kick panel) F58 F65 Gauge 2 fuse 7.5a Gnd Hot w/ ig2 relay energized If1 Im1 Ind Indoor luggage compartment electrical key oscillator (left front of luggage compt) Instrument panel j/b (left side of dash) J/c f65 & f66 (top center of dash) f66 J/c f92 (under center console) J/c f94 (right side of dash) J/c o31 (right "d" pillar) Jf1 Jn1 Lin Of3 Outside luggage electrical key antenna (behind center of rear bumper) Pf4 Pnk Pos1 Pos2 Rco Rda Rear indoor electrical key oscillator (front of luggage compt) Red Right electrical key antenna (front passenger's door outside handle) Rssi Sen1 Sen2 Sens Swil Trg+ Trunk, tailgate, fuel doors system Tsw1 Tsw2 Tsw5 Tsw6 Txct Vc5 Vo1
POWER MIRRORS Electrochromic Mirror Wiring Diagram, with Display for Lexus RX 450h 2012 List of elements for Electrochromic Mirror Wiring Diagram, with Display for Lexus RX 450h 2012: 29 A18 Ec+ Ec- Eci+ Eci- Ecu-ig1 3 fuse 10a F63 F64 Gf1 Gf2 Gnd Gnd1 Hot w/ ig1 1 relay energized If1 Ig1 Inner rear view mirror assembly Instrument panel j/b (left side of dash) J/c f63 & f64 (left side of dash) J/c f92 (under center console) Jf2 Left outer mirror control ecu assembly (in left front door) Left outer rear view mirror assembly (on left front door) Overhead module Pnk Red Right outer mirror control ecu assembly (in right front door) Right outer rear view mirror assembly (on right front door) Tg1 Tg2 Electrochromic Mirror Wiring Diagram, without Display for Lexus RX 450h 2012 List of elements for Electrochromic Mirror Wiring Diagram, without Display for Lexus RX 450h 2012: 29 A18 Ec+ Ec- Eci+ Eci- Ecu-ig1 3 fuse 10a F63 F64 Gf1 Gf2 Gnd Gnd1 Hot w/ ig1 1 relay energized If1 Ig1 Inner rear view mirror assembly Instrument panel j/b (left side of dash) J/c f63 & f64 (left side of dash) J/c f92 (under center console) Jf2 Left outer mirror control ecu assembly (in left front door) Left outer rear view mirror assembly (on left front door) Overhead module Pnk Red Right outer mirror control ecu assembly (in right front door) Right outer rear view mirror assembly (on right front door) Tg1 Tg2 Power Mirrors Wiring Diagram for Lexus RX 450h 2012 List of elements for Power Mirrors Wiring Diagram for Lexus RX 450h 2012: 63 (in right front door) 12v A11 A14 Bdr Canh Canl Cann Canp Capn Certification ecu assembly (right side of dash) Computer data lines system D21 D27 Ec+ Ec- Ecu-b 2 fuse 7.5a Engine room r/b assembly (on left side of engine compt) F1 (left kick panel) F11 F14 F5 (right kick panel) F58 Fl door fuse 25a Fr door fuse 25a Gnd Hot at all times Hssr Htr+ Htr- If1 Instrument panel j/b (left side of dash) J/c f93 (left side of dash) Jf1 Jf2 Le1 Left outer mirror control ecu assembly (in left front door) Left outer rear view mirror assembly (on left front door) Lin2 Lm+r Lmhr Lmvr Lvc Main body ecu Mirror adjust switch Mirror auto retract switch Mirror retract switch Mirror select switch Mr+ Mr- Multiplex network master switch assembly Pnk Re1 Red Right outer mirror control ecu assembly Right outer rear view mirror assembly (on right front door) Rm+r Rmhr Rmvr Rvc Trn+ Trn- Vssr
POWER SEATS Climate Control Seats Wiring Diagram for Lexus RX 450h 2012 List of elements for Climate Control Seats Wiring Diagram for Lexus RX 450h 2012: 62 (left "b" pillar) p2 (right "b" pillar) o3 A/c amplifier assembly (right side of dash) Bllh Blrh Ctb D40 Ecu-ig1 3 fuse 10a F51 Gnd H12 Heater 1 Heater 2 Hot w/ ig1 1 relay energized Hot w/ ig1 4 relay energized Ill+ Ill- Instrument panel j/b (left side of dash) Interior Interior lights system J/c a18 (under driver's seat) J/c a19 (under driver's seat) J/c f92 (under center console) J/c f93 (left side of dash) J/c f94 (right side of dash) J/c z22 (under front passenger's seat) J/c z23 (under front passenger's seat) Left seat back climate control blower (in driver's seat back) Left seat cushion climate control blower assembly (under driver's seat) Left seat heater control sub-assembly Lh s-htr fuse 15a Lights system O3 (right "b" pillar) Of3 Oz1 P2 (left "b" pillar) Pf1 Pf2 Pnk Pa1 Red Rel1 Rh s-htr fuse 15a Right seat back climate control blower blower (in front passenger's seat back) Right seat cushion climate control blower assembly (under front passenger's seat) Right seat heater control sub-assembly S5-2 Seat back Seat cushion Seat heater switch Sg-5 Sign Svbp Svdb Svds Svps Svs5 Svsg Swl Swr Thl Thr Driver Power Seat Wiring Diagram for Lexus RX 450h 2012 List of elements for Driver Power Seat Wiring Diagram for Lexus RX 450h 2012: 33 (under driver's seat) j/c a18 Down Fdwn Front Front vertical Fup H13 Hold Hot at all times Instrument panel j/b (left side of dash) J/c a19 (under driver's seat) Ldwn Left front lumbar support forward & back motor assembly (in driver's seat back) Left front power seat lift position motor assembly (under driver's seat) Left front power seat reclining position motor assembly (in driver's seat back) Left front power seat slide position motor assembly (under driver's seat) Left front power seat switch Left front power seat switch assembly Left front power seat vertical position motor assembly (under driver's seat) Lifter Lup P-seat lh fuse 30a P2 (left "b" pillar) Pnk Pa1 Rclf Rclr Rear Reclining Release Sldf Sldr Slide Heated Seats Wiring Diagram for Lexus RX 450h 2012 List of elements for Heated Seats Wiring Diagram for Lexus RX 450h 2012: 38 D40 Ecu-ig1 3 fuse 10a H12 Heater Heater 1 Heater 2 Hot w/ ig1 1 relay energized Hot w/ ig1 4 relay energized Ill+ Instrument panel j/b (left side of dash) Interior lights system J/c a18 (under driver's seat) J/c a19 (under driver's seat) J/c f92 (under center console) J/c f93 (left side of dash) J/c f94 (right side of dash) J/c z22 (under front passenger's seat) J/c z23 (under front passenger's seat) Left seat heater control sub-assembly Lh s-htr fuse 15a O3 (right "b" pillar) Of3 Oz1 P2 (left "b" pillar) Pf1 Pnk Pa1 Red Rel1 Rh s-htr fuse 15a Right seat heater control sub-assembly Seat back Seat cushion Seat heater switch Swl Swr Thl Thr Passenger Power Seat Wiring Diagram for Lexus RX 450h 2012 List of elements for Passenger Power Seat Wiring Diagram for Lexus RX 450h 2012: 38 Csnf Csnr Down Fdwn Front Front vertical Fup Hold Hot at all times Instrument panel j/b (left side of dash) J/c z22 (under front passenger's seat) J/c z23 (under front passenger's seat) Ldwn Lifter Lup O3 (right "b" pillar) Of1 Oz1 P-seat rh fuse 30a Pnk Rclf Rclr Rear Reclining Red Release Right front lumbar support forward & back motor assembly (in front passenger's seat back) Right front power seat cushion control motor assembly (under front passenger's seat) Right front power seat lift position motor assembly (under front passenger's seat) Right front power seat reclining position motor assembly (in passenger's seat back) Right front power seat slide position motor assembly (under front passenger's seat) Right front power seat switch Right front power seat switch assembly Right front power seat vertical position motor assembly (under front passenger's seat) Right seat variable cushion switch Sldf Sldr Slide
POWER TOP/SUNROOF Power Top/Sunroof Wiring Diagram for Lexus RX 450h 2012 List of elements for Power Top/Sunroof Wiring Diagram for Lexus RX 450h 2012: 62 (left "d" pillar) j/c p39 (left side of dash) j/c f93 A18 A54 Bzr Canh Canl Certification ecu assembly (right side of dash) Cls Combination meter assembly Computer data lines system D27 Data Door control receiver (right "c" pillar) Dwn Ecu-ig1 3 fuse 10a F1 (left kick panel) F13 F14 F16 F25 F58 F65 F66 Flcy Gauge 2 fuse 7.5a Gf1 Gf3 Gnd Gnd2 H26 Hot at all times Hot in on or start Ig+ Ig3 Instrument panel j/b (left side of dash) J/c a63 (left side of dash) J/c f65 & f66 (top center of dash) J/c f92 (under center console) J/c f93 (left side of dash) J/c o31 (right "d" pillar) Jf1 Key lock Key unlock Left front door courtesy light switch assembly (at left "b" pillar) Left front door w/ motor lock assembly (in driver's door) Lin Lin2 Main body ecu Opn Overhead module Pnk Rco Rda Red Rssi S/roof fuse 30a Sliding roof control ecu (center front of roof) Tg1 Tg2 Ul3 Wireless door lock buzzer (left side of engine compt)
POWER WINDOWS Power Windows Wiring Diagram (1 of 2) for Lexus RX 450h 2012 List of elements for Power Windows Wiring Diagram (1 of 2) for Lexus RX 450h 2012: 57 12v A14 Becu Bzr Canh Canl Computer data lines system D21 D27 Driver side auto switch Driver side down switch Driver side up switch Dwn1 Ecu-b 1 fuse 10a Ecu-b 2 fuse 7.5a Engine room r/b assembly (on left side of engine compt) F1 (left kick panel) F11 F13 F14 F25 F40 F65 F66 Fl door fuse 25a Flcy Front passenger side control switch Gnd2 H25 H26 Hot at all times Instrument panel j/b (left side of dash) Interior lights system J/c a63 (left side of dash) J/c f65 & f66 (top center of dash) J/c f92 (under center console) J/c f93 (left side of dash) J/c p39 (left "d" pillar) Jf1 Jf2 Led Left front door courtesy light switch (at left "b" pillar) Left front door w/ motor lock assembly Left front power window regulator motor assembly (in driver's door) Left rear side control switch Lin Lin1 Lin2 Main body ecu (behind left side of dash) Multiplex network master switch assembly Pnk Red Right rear side control switch Ul3 Up1 Window lock switch Wireless door lock buzzer (left side of engine compt) Power Windows Wiring Diagram (2 of 2) for Lexus RX 450h 2012 List of elements for Power Windows Wiring Diagram (2 of 2) for Lexus RX 450h 2012: 48 A11 A12 Auto Auto down Auto up Canh Canl Certification ecu assembly (right side of dash) Computer data lines system Data Door control receiver (right "c" pillar) Door locks system Dwn1 F5 (right kick panel) F58 Fr door fuse 25a Gnd Hot at all times If1 Instrument panel j/b (left side of dash) Interior lights system J/c o31 (right "d" pillar) Ko1 Led Left rear power window regulator motor assembly (in left rear door) Left rear power window regulator switch assembly Lin Lock Lp1 Manual down Manual up O3 (right "b" pillar) Of1 Of3 P2 (left "b" pillar) Pnk Rco Rda Red Right front power window regulator motor assembly (in front passenger's door) Right front power window regulator switch assembly Right rear power window regulator motor assembly (in right rear door) Right rear power window regulator switch assembly Rl door fuse 25a Rr door fuse 25a Rssi Un lock Up1
RADIO Radio Wiring Diagram, with Navigation (2 of 5) for Lexus RX 450h 2012 List of elements for Radio Wiring Diagram, with Navigation (2 of 5) for Lexus RX 450h 2012: 66 (or red) (under rear of center console) (if equipped) multi-media interface ecu Acc Computer data lines system F40 Front speaker assembly 4 G1 (under center floor console) G28 Gf2 Gnd Gnd1 Gvif Hf1 If2 Ill Interior lights system Jf1 Left front speaker assembly 2 Left front speaker assembly 3 Left steering pad switch Mode Multi-display assembly Nca Ntsc Of2 Of3 Off hook Og1 On hook Op2 Pnk Rear speaker assembly 3 Red Right front speaker assembly 2 Right front speaker assembly 3 Right steering pad switch Seek+ Seek- Spiral cable sub-assembly (in steering column) Steering pad switch assembly Twl+ Twl- Twr+ Twr- Tx+ Tx- Tx1+ Tx1- U12 Ug1 Ugd1 Ulo+ Uro+ Usd1 Vmt1 Voice Volume + Volume - W/ lexus enform pnk W/ parking assist W/o lexus enform W/o parking assist Wf1+ Wf1- Wf2+ Wf2- Radio Wiring Diagram, with Navigation (3 of 5) for Lexus RX 450h 2012 List of elements for Radio Wiring Diagram, with Navigation (3 of 5) for Lexus RX 450h 2012: 88 (right side of dash) parking assist ecu +b2 Acc Af10 Agnd Computer data lines system Ctr+ Ctr- F54 F90 F91 Fg2 Fg3 Fl+ Fl- Fr+ Fr- G23 G24 G29 G30 Gf3 Gnd Gnd2 Gvif If2 Instrument cluster system J/c o31 (right "d" pillar) Jf1 Left front speaker assembly 1 Mi+ Mi- Mo+ Mo- Navigation receiver assembly Nca O15 O16 O17 O18 Of2 Og1 Og2 Pnk Red Right front speaker assembly 1 Rl+ Rl- Rr+ Rr- Sl+ Sl- Sldi Sldo Spd Sr+ Sr- Stereo component amplifier (luggage compt) Tmut Tx+ Tx- Txm+ Txm- Usb Usbg Usbv Va- Val+ Var+ Vmtr Vor+ Vor- Vot+ Vot- W/ parking assist W/ rear seat entertainment system W/o parking assist W/o rear seat entertainment system Wf1+ Wf1- Wf2+ Wf2- Wfl+ Wfl- Wfr+ Wfr- Wui Wuo Radio Wiring Diagram, with Navigation (4 of 5) for Lexus RX 450h 2012 List of elements for Radio Wiring Diagram, with Navigation (4 of 5) for Lexus RX 450h 2012: 57 (center of dash) j/c g21 (center of dash) j/c g22 (or red) +tw -tw Acc Agnd Ali Alo Ari Aro Asgn Auxi Auxo Combination meter assembly F16 G1 under center floor console) G13 G14 Gf3 Gnd Ill+ Ill- Interior lights system J/c f66 (top center of dash) J/c f92 under center console Ko1 Left quarter side speaker assembly (w/ 15 speaker) Left rear speaker assembly Left rear speaker assembly 2 Lp1 Mi+ Mi- Mo+ Mo- Nca Ntsc Op2 Pblt Pnk Radio receiver assembly Red Remote operation switch Right quarter side speaker assembly (w/ 15 speaker) Right rear speaker assembly Right rear speaker assembly 2 Sld Sldi Sldo Stereo jack adapter assembly 1 Stereo jack adapter assembly 1 (w/ multi-media interface ecu) Ug2 Ug3 W/ multi-media interface ecu W/o multi-media interface ecu Wui Wuo Radio Wiring Diagram, without Navigation (2 of 4) for Lexus RX 450h 2012 List of elements for Radio Wiring Diagram, without Navigation (2 of 4) for Lexus RX 450h 2012: 53 (behind left side of dash) main body ecu (center of dash) j/c g22 (left side of dash) j/c f63 & f64 (top center of dash) j/c f66 Acan Acc Adim Clk1 Clk3 Computer data lines system Door locks system F14 F40 F63 F64 Fg1 Gf2 Gf3 Gnd Heater control panel (radio receiver assembly) Ill+ Ill- Interior lights system J/c f92 (under center console) Left steering pad switch Macc Mco+ Mco- Mode Nca Off hook On hook Overhead module Pnk Rear window defogger switch Red Right steering pad switch Seek+ Seek- Sns2 Spiral cable sub-assembly (in steering column) Steering pad switch assembly Telephone microphone Tg2 Tx+ Tx- Voice Volume + Volume - W/ safety connect W/ safety connect red W/o safety connect W/o safety connect nca Radio Wiring Diagram, without Navigation (3 of 4) for Lexus RX 450h 2012 List of elements for Radio Wiring Diagram, without Navigation (3 of 4) for Lexus RX 450h 2012: 60 +tw -tw Acc Adim Clk2 Clk4 Combination meter assembly Computer data lines system Dcm (telematics transceiver) (w/ safety connect) (under center console) F16 Fg1 G25 Gf2 Gnd1 If2 Ig+ Ig2 Ill- Interior lights system Left rear speaker assembly Left rear speaker assembly 2 Lin1 Lp1 Mci+ Mci- Mco+ Mco- Mcvd Multi information display assembly Mute Nca Og1 Op2 P-ab Paon Passenger air bag on/off indicator Pbew Pblt Pnk Rear speaker assembly 3 (w/ 12 speaker) Red Right front speaker assembly 2 Right front speaker assembly 3 Sgnd Spi+ Spi- Spo+ Spo- Twr+ Twr- Tx2+ Tx2- W/ 12 speaker W/ 9 speaker W/ safety connect W/o safety connect Wf1+ Wf1- Wf2+ Wf2- Radio Wiring Diagram, without Navigation (4 of 4) for Lexus RX 450h 2012 List of elements for Radio Wiring Diagram, without Navigation (4 of 4) for Lexus RX 450h 2012: 63 +b2 +tw -tw Acc Computer data lines system Ctr+ Ctr- Fl+ Fl- Fr+ Fr- Front speaker assembly 4 Gf3 Gnd Gnd2 Hf1 Ii1+ Ii1- Instrument cluster system J/c o31 (right "d" pillar) Jf1 Jf2 Ko1 Left front speaker assembly 1 Left front speaker assembly 2 Left front speaker assembly 3 Mute O16 O17 O18 O33 O34 Of2 Of3 Og1 Og2 Op2 Pnk Red Right front speaker assembly 1 Right rear speaker assembly Right rear speaker assembly 2 Rl+ Rl- Rr+ Rr- Spd Stereo component amplifier assembly (luggage compt) Tmut Twl+ Twl- Tx+ Tx- W/ 12 speaker W/ 9 speaker Wf1+ Wf1- Wf2+ Wf2- Wfl+ Wfl- Wfr+ Wfr-
SHIFT INTERLOCK Shift Interlock Wiring Diagram for Lexus RX 450h 2012 List of elements for Shift Interlock Wiring Diagram for Lexus RX 450h 2012: 33 A81 Af5 Ca2h Ca2l Computer data lines system D29 Da2 Ecu-ig1 1 fuse 10a Engine room r/b 2 (left rear of engine compartment) Engine room r/b assembly (on left side of engine compartment) F66 F97 Hot at all times Hot w/ ig1 1 relay energized Hot w/ igct main relay energized Igct 3 fuse 10a Instrument panel j/b (left side of dash) J/c a61 (left side of dash) J/c a62 (left side of dash) J/c f65 & f66 (top center of dash) f65 J/c f92 (under center console) P position detection switch Park/neutral position switch (on transmission) Pnk Power management control ecu (left side of dash) Red Shift lock control ecu sub-assembly (under center console, beside shift lever) Shift lock solenoid Sls+ Sls- Stop fuse 7.5a Stop light switch assembly (on brake pedal bracket) Stp Steering Column Wiring Diagram for Lexus RX 450h 2012 List of elements for Steering Column Wiring Diagram for Lexus RX 450h 2012: 29 A54 Af10 Ca2h Ca2l Computer data lines system Engine room r/b assembly (on left side of engine compartment) F65 F97 F98 Gauge 2 fuse 7.5a Gnd Hot at all times Hot w/ ig2 relay energized Id code box (left side of dash) Ig2 Ige Instrument panel j/b (left side of dash) J/c f65 & f66 (top center of dash) f66 J/c f92 (under center console) J/c f93 (left side of dash) Lin Lin 1 Power management control ecu (left side of dash) Red Slp Slp1 Slr+ Steering lock actuator assembly (on steering column) Str lock fuse 20a
SUPPLEMENTAL RESTRAINTS Pre-Collision Wiring Diagram for Lexus RX 450h 2012 List of elements for Pre-Collision Wiring Diagram for Lexus RX 450h 2012: 41 Ab1 Ac1 Ca1l ca1h a90 Ca2h Ca2l Can l can h f16 Canh Canl Combination meter assembly Computer data lines system D30 Driving support ecu assembly (left end of dash) Ecu-ig1 1 fuse 10a Ecu-ig1 fuse 10a Engine room r/b assembly (on left side of engine compt) F5 (right kick panel) F56 F57 Hot at all times Hot w/ ig1 1 relay energized Ig1 Igb Instrument panel j/b (left side of dash) J/c a62 (left side of dash) Left front seat outer belt assembly (base of left "b" pillar) Lrdd Lrrd Millimeter wave radar sensor assembly (center front of engine compt) Mol+ Mol- Mor+ Mor- Of1 Pf2 Pgnd Pnk Psb fuse 30a Red Right front seat outer belt assembly (base of right "b" pillar) Seat belt control ecu (right side of dash) Skid control ecu assembly (right side of dash) Supplemental Restraint Wiring Diagram (1 of 2) for Lexus RX 450h 2012 List of elements for Supplemental Restraint Wiring Diagram (1 of 2) for Lexus RX 450h 2012: 88 (left side of dash) driver air bag squib circuit (lower left side of dash) lower instrument panel air bag assembly 1 (lower right side of dash) lower instrument panel air bag assembly 2 (right side of dash) front passenger side air bag squib circuit +sl +sr -sl -sr A24 A26 A47 A49 A54 Abfs Air Air bag sensor assembly (below center console) Aron Bbl+ Bbl- Bcl+ Bcl- Bdl+ Bdl- Canh Canl Computer data lines system D2+ D2- Dk+ Dk- Ecu ig2 fuse 10a F29 F5 (right kick panel) F97 Fg1 Ff1 Gauge fuse 7.5a Gsw Gsw2 Gsw3 Heater control panel (radio receiver assembly) Hot w/ ig2 relay energized Icl+ Icl- Ig2 Instrument panel j/b (left side of dash) J/c f92 (under center console) Jp1 Lbe+ Lbe- Left curtain shield air bag assembly (left side of roof) Left door side air bag sensor (base of left "b" pillar) Left front seat inner belt assembly (under driver's seat) Left front seat outer belt assembly (base of left "b" pillar) Left front side air bag squib circuit (in driver's seat back) Left rear air bag sensor (left "c" pillar) Left rear side air bag squib circuit (under left rear seat) Left side air bag sensor assembly Lsp+ Lsp- Multi information display assembly Outer left rear seat belt assembly 1 (left "c" pillar) P-ab P10 P2+ P2- Paon Passenger air bag on/off indicator Pk+ Pk- Pl+ Pl- Plr+ Plr- Power management control ecu (left side of dash) Pretensioner Red Rl+ Rl- Seat position air bag sensor Second step Sfl+ Sfl- Spiral cable sub- assembly (in f41 steering column) Srl+ Srl- W/ navigation W/o navigation Supplemental Restraint Wiring Diagram (2 of 2) for Lexus RX 450h 2012 List of elements for Supplemental Restraint Wiring Diagram (2 of 2) for Lexus RX 450h 2012: 94 (base of right "b" pillar) right front seat outer belt assembly (in left front corner of engine compt) left front air bag sensor (in right front corner of engine compt) right front air bag sensor (right "c" pillar) outer right rear seat belt assembly 1 (under center console) dcm (telematics transceiver) +sl +sr -sl -sr A25 Af6 Air bag sensor assembly (below center console) Bbr+ Bbr- Bcr+ Bcr- Bdr+ Bdr- Bgnd Bsw Canh Canl Combination meter assembly Computer data lines system D22 D39 Dia Ecu-b1 fuse 10a Ecu-b2 fuse 7.5a Engine room r/b assembly (on left side of engine compt) F11 F15 F16 F40 F65 F66 Front in weight detection sensor sub assembly (under in front side of front passenger's seat) Front out weight detection sensor sub assembly (under out front side of front passenger's seat) Fsr+ Fsr- G25 Gnd Gsw Hot at all times Icr+ Icr- Ig+ Instrument panel j/b (left side of dash) Io1 J/c f65 & f66 (top center of dash) J/c f92 (under center console) J/c f93 (left side of dash) J/c f94 (right side of dash) J/c g22 (center of dash) J/c o31 (right "d" pillar) Main body ecu Occupant detection ecu (under front passenger's seat) Of1 Of3 Oz2 Pnk Pr+ Pr- Pretensioner Prr+ Prr- Rear in weight detection sensor sub assembly (under in rear side of front passenger's seat) Rear out weight detection sensor sub assembly (under out rear side of front passenger's seat) Red Right curtain shield air bag assembly (right side of roof) Right door side air bag sensor (base of right "b" pillar) Right front seat inner belt assembly (under front passenger's seat) Right front side air bag squib circuit (in front passenger's seat back) Right rear air bag sensor (right ``c" pillar) Right rear side air bag squib circuit (right "c" pillar) Right side air bag sensor assembly Rr+ Rr- Sfr+ Sfr- Sgd1 Sgd2 Sgd3 Sgd4 Sig1 Sig2 Sig3 Sig4 Srr+ Srr- Svc1 Svc2 Svc3 Svc4
TRANSMISSION Transmission Wiring Diagram (1 of 3) for Lexus RX 450h 2012 List of elements for Transmission Wiring Diagram (1 of 3) for Lexus RX 450h 2012: 87 (left "d" pillar) j/c p65 +b2 A79 Ap3 Cbi Cei Clk+ Clk- D44 D45 D46 D47 Da1 Dcdc fuse 150a Dcdc-s fuse 7.5a Dnr2 Drn1 Drn3 Drn4 Drn6 Drn7 Drn8 Drns Engine room j/b assembly (left side of engine compt) Front motor generator 1 (left front of engine compt) Front motor generator 2 (left front of engine compt) Fuse box (rear of luggage compt) Gcs Gcsg Gmt Gmtg Gnd Gnd1 Gnd2 Grf Grfg Gsn Gsng Hot at all times Hsdn Htm+ Htm- Hv battery junction block assembly (left side of luggage compt) g3 Igct Ilk Ilki Ilko Interlock switch Inverter assembly w/ converter (left side of engine compt) J/c a58 (behind left headlight) Mcs Mcsg Mmt Mmtg Mrf Mrfg Msn Msng Mth+ Mth- Nca Nodd P3 (left ''c'' pillar) Pnk R-u R-v R-w Rcs Rcsg Rear traction transaxle motor generator (at rear axle) Red Req+ Req- Rmt Rmtg Rrf Rrfg Rsn Rsng Vlo G10 G11 Ga2 Z35 Z36 Z37 Z38 Transmission Wiring Diagram (2 of 3) for Lexus RX 450h 2012 List of elements for Transmission Wiring Diagram (2 of 3) for Lexus RX 450h 2012: 55 A80 A81 Amd Ca1h Ca1l Cbi g1 Cei Clk+ Clk- Computer data lines system Da1 Drn2 Engine room r/b 2 (left rear of engine compt) Ep1 Ep2 F98 Gmt Gmtg Hsdn Htm+ Htm- Igct 2 fuse 10a Igct 3 fuse 10a Igct main relay Ilk Inverter assembly w/ converter (left side of engine compt) J/c a62 (left side of dash) J/c a63 (left side of dash) Mmt Mmtg Mrel Mth+ Mth- Nca Nodd Pcu fuse 15a Pnk Power management control ecu (left side of dash) R-u R-v R-w Red Req+ Req- Rmt Rmtg Sftd Sftu St1- Vcp1 Vcp2 Vlo Vpa1 Vpa2 Ga2 Transmission Wiring Diagram (3 of 3) for Lexus RX 450h 2012 List of elements for Transmission Wiring Diagram (3 of 3) for Lexus RX 450h 2012: 64 (left side of dash) j/c f93 (right side of dash) j/c f94 A11 A76 Ac1 Accelerator position sensor (on accelerator pedal assembly) Ca2h Ca2l Canh Canl Combination meter assembly Computer data lines system D2 (top rear of engine) D31 D39 Da2 Driving support ecu assembly (w/ dynamic radar cruise control) (left end of dash) Ecm (right front of engine compt) Ecu ig1 1 fuse 10a Ecu ig2 fuse 10a Ecu-b 1 fuse 10a Engine room r/b assembly (on left side of engine compt) Ep1 Ep2 Eta F12 F15 F16 F30 F40 F65 F66 Ge01 Go2 Hot at all times Hot w/ ig1 relay energized Hot w/ ig2 relay energized Hv r/b 1 fuse 30a Igsw Instrument panel j/b (left side of dash) J/c a61 (left side of dash) J/c a62 (left side of dash) J/c a67 (behind right headlight) J/c f65 & f66 (top center of dash) J/c f92 (under center console) J/c f93 (left side of dash) Nca Pnk Red Shift lever position sensor (on transmission) St1- Stop fuse 7.5a Stop light switch assembly (on brake pedal bracket) Stp- Throttle w/ motor body (right rear of engine) Transmission control switch (under front of center console) Vcp1 Vcp2 Vcta Vpa1 Vpa2 Vta Vta1 Vta2
TRUNK, TAILGATE, FUEL DOOR Back Door Opener Wiring Diagram, with Power Back Door for Lexus RX 450h 2012 List of elements for Back Door Opener Wiring Diagram, with Power Back Door for Lexus RX 450h 2012: 86 (left rear of luggage compt) (left side of back door) j/c y22 Ap2 Back door control switch Back door lock assembly (lower center of back door) Back door opener switch assembly Bzr Canh Canl Cann Canp Certification ecu assembly (right side of dash) Computer data lines system Cty Ctyo Data Dc+ Dc- Dlsw Door control receiver (right "c" pillar) Door control switch assembly Ds1 Ecu-b 1 fuse 10a Ecu-ig1 1 fuse 10a Ecub Engine room r/b assembly (on left side of engine engine compt) F13 F14 F25 F40 F58 F63 F64 F65 F66 Fsw Ful Gf2 Gf3 Gnd Gnd1 H35 Haf Haz Hot at all times Hot in on or start Instrument panel j/b (left side of dash) Interior lights Interior lights system J/c a63 (left side of dash) J/c f63 & f64 (left side of dash) f63 J/c f65 & f66 (top center of dash) J/c f92 (under center console) J/c o31 (right "d" pillar) J/c y23 (left side of back door) Left power back door sensor (left side of liftgate) Lock Main body ecu hzsw Msw Open Ose Osl Osr Pawl Pbd fuse 30a Pbds Pf2 Pf4 Pnk Pos Power back door main switch Power back door unit assembly (left rear of roof) Rco Rda Red Right power back door sensor (right side of liftgate) Rssi System Tsw5 Tsw6 Turn signal flasher assembly (behind left side of dash) Ulsw Wireless door lock buzzer (left side of engine compt) Yp1 Yp2 Yy1 Back Door Opener Wiring Diagram, without Power Back Door for Lexus RX 450h 2012 List of elements for Back Door Opener Wiring Diagram, without Power Back Door for Lexus RX 450h 2012: 28 (left side of back door) j/c y23 Back door lock assembly (lower center of back door) Back door opener switch assembly Bcty Bk/dr lock relay Canh Canl Certification ecu assembly (right side of dash) Computer data lines system D/l alt b fuse 25a F13 F58 H11 Hot at all times Instrument panel j/b (left side of dash) J/c p40 (left "d" pillar) Lock Main body ecu Open P4 (left rear of luggage compt) Pf4 Pnk Red Tr+ Tsw5 Tsw6 Yp1 Yy1 Fuel Door Release Wiring Diagram for Lexus RX 450h 2012 List of elements for Fuel Door Release Wiring Diagram for Lexus RX 450h 2012: 36 A54 A76 Af10 Af2 Af9 Ap2 Combination meter assembly D24 Ecm (right front of engine compt) F16 Fuel Fuel filler opening lid lock sub-assembly (left rear of vehicle) Fuel lid courtesy switch Fuel lid opener switch Fuel opn fuse 7.5a Fugi Fuo Fuwi Gauge 2 fuse 7.5a Hot at all times Hot in on or start Ig+ Instrument panel j/b (left side of dash) Interior lights system J/c f92 (under center console) J/c f93 (left side of dash) J/c f94 (right side of dash) J/c p65 (left "d" pillar) Lido Lst1 Lst2 P3 (left "c" pillar) Pf2 Pf4 Pnk Red
WARNING SYSTEMS Seat Belt Warning Wiring Diagram for Lexus RX 450h 2012 List of elements for Seat Belt Warning Wiring Diagram for Lexus RX 450h 2012: 54 (under center console) j/c f92 A26 A54 Air bag sensor assembly (below center console) Bgnd Bsw Canh Canl Combination meter assembly Computer data lines system D22 Ecu ig2 fuse 10a Ecu-b fuse 7.5a Engine room r/b assembly (on left side of engine compt) F11 F13 F16 F29 Fg1 Flcy Fsr+ Fsr- Gauge 2 fuse 7.5a Gf3 Gnd Gnd1 H26 Heater control panel (radio receiver assembly) Hot at all times Hot in on or start Ig+ Ig2 Instrument panel j/b assembly (left side of dash) J/c f66 (top center of dash) J/c f93 (left side of dash) J/c g22 (center of dash) J/c p39 (left "d" pillar) Lbe+ Lbe- Left front door courtesy light switch assembly (at left "b" pillar) Left front seat inner belt assembly (under driver's seat) Main body ecu Multi information display assembly Occupant detection ecu (under front passenger's seat) Oh3 Oz2 P10 Pbew Pblt Pnk Red Right front seat inner belt assembly (under front passenger's seat) W/ navigation system W/o navigation system Tire Pressure Monitoring Wiring Diagram for Lexus RX 450h 2012 List of elements for Tire Pressure Monitoring Wiring Diagram for Lexus RX 450h 2012: 29 +5v A39 A54 Canh Canl Cann Canp Clsw Combination meter assembly Computer data lines system Ecu ig1 1 fuse 10a F16 Gauge 2 fuse 7.5a Gnd Gnd2 Hot in on or start Ig+ Instrument panel j/b (left side of dash) J/c f92 (under center console) J/c f93 (left side of dash) J/c f94 (right side of dash) Pf2 Pnk Rda Red Rf5v Tire pressure warning antenna & receiver (rear center of roof) Tire pressure warning ecu (behind right side of dash) Tire pressure warning reset switch
WIPER/WASHER Front Wiper/Washer Wiring Diagram, with Auto Wiper System for Lexus RX 450h 2012 List of elements for Front Wiper/Washer Wiring Diagram, with Auto Wiper System for Lexus RX 450h 2012: 53 (in washer fluid reservoir) front windshield washer motor & pump assembly (under center console) j/c f92 A10 A11 A18 Acan Af10 Af7 Af8 Auto Canh Canl Combination meter assembly Computer data lines system D40 Ecu-ig1 3 fuse 10a F14 F15 F16 Fr wash fuse 25a Fr wip fuse 30a Front washer switch Front wiper switch Gf1 Gf3 Gnd2 High Hot in on or start Ig2 Instrument panel j/b (left side of dash) J/c a58 (behind left headlight) J/c a67 (behind right headlight) J/c f64 (left side of dash) J/c f92 (under center console) J/c f94 (right side of dash) Level warning switch (in washer fluid reservoir) Low Main body ecu (behind left side of dash) Mist Mpx Mpx1 Off Overhead module Pnk Rain sensor (center front of roof) Red Sig Tail Tg2 Wig Windshield wiper motor assembly (left rear of engine compt) Windshield wiper switch assembly Wlvl Front Wiper/Washer Wiring Diagram, without Auto Wiper System for Lexus RX 450h 2012 List of elements for Front Wiper/Washer Wiring Diagram, without Auto Wiper System for Lexus RX 450h 2012: 30 A10 A11 Af10 Af7 Af8 Canh Canl Combination meter assembly Computer data lines system F15 F16 Fr wash fuse 25a Fr wip fuse 30a Front washer switch Front windshield washer motor & pump assembly (in washer fluid reservoir) Front wiper switch Hot in on or start Instrument panel j/b (left side of dash) Int J/c a58 (behind left headlight) J/c a67 (behind right headlight) J/c f92 (under center console) Level warning switch (in washer fluid reservoir) Mist Off Pnk Red Windshield wiper motor assembly (left rear of engine compt) Windshield wiper switch assembly Wlvl Headlamp Washer Wiring Diagram for Lexus RX 450h 2012 List of elements for Headlamp Washer Wiring Diagram for Lexus RX 450h 2012: 36 (behind right headlight) j/c a67 A11 Af2 Af7 Af9 Auto Ecu ig1 fuse 10a Engine room r/b assembly (on left side of engine compt) F13 F14 F37 Front washer switch Frwa H-lp cln fuse 30a Hdlo Head Headlight cleaner control relay (below right headlight assembly) Headlight cleaner motor & pump assembly (below right front headlight) Headlight cleaner switch assembly Headlight dimmer switch assembly Hot at all times Hot in on or start Hrly Instrument panel j/b (left side of dash) Interior lights system J/c a62 (left side of dash) J/c f92 (under center console) J/c f93 (left side of dash) J/c f94 (right side of dash) Light switch control Main body ecu Off (canada) drl-off (usa) Pnk Red Tail Windshield wiper switch assembly Rear Wiper/Washer Wiring Diagram for Lexus RX 450h 2012 List of elements for Rear Wiper/Washer Wiring Diagram for Lexus RX 450h 2012: 19 +1r Af7 C1r Hot in on or start Instrument panel j/b (left side of dash) J/c f92 (under center console) J/c y23 (left side of back door) Off On+washer Pf1 Pf4 Pnk Rear windshield washer motor & pump assembly (in washer fluid reservoir) Rear wiper motor (center of liftgate) Rr wash fuse 20a Rr wip fuse 15a Wash Windshield wiper switch assembly Yp1
