Diagram sections — 32 (85 total)
AIR CONDITIONING ANTI-LOCK BRAKES ANTI-THEFT BODY CONTROL MODULES COMPUTER DATA LINES COOLING FAN CRUISE CONTROL DEFOGGERS ELECTRONIC POWER STEERING 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 400h 2008 List of elements for Automatic A/C Wiring Diagram (1 of 2) for Lexus RX 400h 2008: 66 (left side of engine compt) A/c amplifier (right side of dash) A/c room A/c room temperature sensor & humidity sensor (a/c room temperature sensor: behind left center of dash) (humidity sensor: left side of dash) A/c solar sensor (behind upper left side of dash) A/c thermistor (left side of dash) Aif Air Air inlet control servo motor (behind right side of dash) Air mix control servo motor (driver side) (behind left side of dash) Air mix control servo motor (front passenger side) (behind right side of dash) Air vent mode control servo motor (behind right side of dash) Amdc Amdh Ampc Amph Aod Aof Blw Computer data lines system D10 Def Ecu-b 1 fuse 7.5a Ecu-ig 1 fuse 7.5a F11 Face Fusible link block (left side of engine compt) G10 Gnd Heater fuse 50a Hot at all times Hot in on or start Humidity Ig+ Ii (at left kick panel) Instrument panel j/b (left side of dash) J/b 3 (left side of dash) K14 Mcool Mfrs Mhot Mpx+ Mpx- Mrec Pnk R/b 3 Red S5-1 S5-2 S5-3 S5-4 Sg-1 Sg-2 Sg-3 Sg-4 Sg-5 Ssr+ Tpd Tpi Tpo Tpp Tsd Tsp Water pump fuse 10a Wip Wiper/washer system Automatic A/C Wiring Diagram (2 of 2) for Lexus RX 400h 2008 List of elements for Automatic A/C Wiring Diagram (2 of 2) for Lexus RX 400h 2008: 71 (behind left side of dash) (behind left side of dash) junction connector 6 (left front of engine compt) left cooling fan ecu (left rear (left side of (left side of engine compt) r/b 3 (left top of dash) ij (on left side of engine compt) engine room r/b A/c ambient temperature sensor (behind front grille) A/c wip relay Blower motor (behind right side of dash) Blower motor controller (right side of dash) C18 C19 Canh Canl Clk Compressor motor (front of engine compt) Computer data lines system Dual Ed (front of engine) Engine compt) Engine coolant temperature sensor (on top front of engine) Eti F16 Fusible link block (left side of engine compt) Gnd H10 H30 H32 H33 H34 Heater fuse 7.5a Heater relay Hot at all times Hot in on or start Hybrid vehicle control ecu (right side of dash) Instrument panel j/b (left side of dash) Inverter Ite J/b 2 (left side of engine compt) Junction connector 17 (right side of dash) Junction connector 20 (right side of dash) Junction connector 6 Junction connector 6 (behind left side of dash) Junction connector 7 & 8 (behind left side of dash) Junction connector 9 (behind left side of dash) Mode monitor terminal Nca Of engine) Pbat Pgnd Pnk Pr2 Pressure switch (right front of engine compt) Rdi fan 1 fuse 40a Rdi fan 1 relay Rdi fan 2 fuse 40a Rdi fan 2 relay Red Rfc1 Rfc2 Right cooling fan ecu (right front of engine compt) Si2 Single Stb Tam Thw Toecu Toinv Water pump motor (a/c) (left side of engine compt)
ANTI-LOCK BRAKES Anti-lock Brakes Wiring Diagram (1 of 3) for Lexus RX 400h 2008 List of elements for Anti-lock Brakes Wiring Diagram (1 of 3) for Lexus RX 400h 2008: 76 Abs 1 fuse 10a Abs 1 relay Abs 2 fuse 10a Abs 2 relay Abs 3 fuse 15a Abs mtr 1 fuse 30a Abs mtr 1 relay Abs mtr 2 fuse 30a Abs mtr 2 relay Brake stroke simulator cylinder (left rear of engine compt) Bs1 Bs2 Cty+ Ea (at right side of engine compt) Fl+ Fl- Fla+ Fla- Flr+ Flr- Fr+ Fr- Fra+ Fra- Frr+ Frr- Fss Gnd1 Gnd6 Hot at all times Ig2 Lbl Left front speed sensor (on left front wheel hub bracket) Mr1 Mr2 Mtt Nca Pac1 Pck1 Pck2 Pfl Pfr Pmc1 Pmc2 Pnk Prl Prr R/b 4 (left side of engine compt) R1+ R1- R2+ R2- R3+ R4+ Red Right front speed sensor (on right front wheel hub bracket) Rla+ Rla- Rlr+ Rlr- Rra+ Rra- Rrr+ Rrr- S36 S37 S38 S41 Sg1 Sg2 Short connector s36 & s37 Skid control ecu (right side of dash) Smc1 Smc2 Vcm Vcm2 Anti-lock Brakes Wiring Diagram (2 of 3) for Lexus RX 400h 2008 List of elements for Anti-lock Brakes Wiring Diagram (2 of 3) for Lexus RX 400h 2008: 32 (left rear of engine compt) ey (left side of dash) j/b 3 Bat Brake actuator (right rear of engine compt) Brake fluid level warning switch (in brake fluid reservoir) C11 Canh Canl Computer data lines system Ecu-ig 1 fuse 7.5a Ess F11 Gnd Hot in on or start Ig1 Ign fuse 10a Ii (at left kick panel) Instrument panel j/b (left side of dash) J/b 3 (left side of dash) J30 J31 Junction connector 2 (in right front of engine compt, behind headlight) Junction connector 30 & 31 (left rear cargo area) Junction connector 37 (at rear cargo area) Junction connector 42 (at rear cargo area) Junction connector 6 (behind left side of dash) Junction connector 9 (behind left side of dash) Nca Pnk Red Steering angle sensor (in steering column, behind steering wheel) Yaw rate sensor (center of vehicle)
ANTI-THEFT Forced Entry Wiring Diagram (1 of 2) for Lexus RX 400h 2008 List of elements for Forced Entry Wiring Diagram (1 of 2) for Lexus RX 400h 2008: 82 (at left kick panel) ii (at left rear "c" pillar) left rear door courtesy switch (at rear cargo area) Acc Act+ Act- Actd Altb Back door lock assembly (in center of tailgate) Back door opener switch (w/o power back door) (in tailgate assembly) Batb Bcty Bdsu Becu Body ecu (behind left side of dash) Buzzer Bzr C11 C12 Computer data lines system Ctye Ctyo D10 D11 D16 Dcty Door 1 fuse 25a Door 2 fuse 25a Ecu-acc fuse 7.5a Ecu-b 1 fuse 7.5a Ecu-ig 1 fuse 7.5a Engine hood courtesy switch (on front center of engine compt) Exterior lights system F10 F11 F18 Fusible link block (left side of engine compt) Gnd 1 Gnd2 Haz Hcty Horn Horns system Hot at all times Hot in acc or on Hot in on or start Ii (at left kick panel) Ind Instrument panel j/b (left side of dash) J/b 3 (left side of dash) J/c 36 J/c 40 (at rear cargo area) J/c 5 (left front of engine compt, behind headlight) J/c 6 (behind left side of dash) Keyless buzzer (left side of engine compt) Ksw Lcty Left front door courtesy switch (at left "b" pillar) Lswl Lswp Lswr Mpx1 Mpx2 P11 Pcty Pnk Power back door ecu (center of left "d" pillar) Prg Pws Rcty Rda Rear j/b (left rear side of cargo area) Red Right front door courtesy switch (at right "b" pillar) Right rear door courtesy switch (at right rear "c" pillar) Theft deterrent horn (left front of engine compt) Tr+ Trly Ul1 Unlock warning switch (under left side of dash) W/ power back door W/o power back door Forced Entry Wiring Diagram (2 of 2) for Lexus RX 400h 2008 List of elements for Forced Entry Wiring Diagram (2 of 2) for Lexus RX 400h 2008: 47 (left kick panel) j/c 28 (top of left "d" pillar) door control receiver Bn (at left "b" pillar) Bo (left rear of cargo area) Bp (lower right "b" pillar) Center cluster integration panel Computer data lines Cpub Driver's side door key lock & unlock switch, door lock motor & door unlock detection switch (in left front door) Ecu-b 2 fuse 7.5a Front passenger's side door lock motor & door unlock detection switch (in right front door) Fusible link block (left side of engine compt) Gnd Gnd1 H13 Hot at all times Hsy Ij (left top of dash) Il (center of dash) J/b 3 (left side of dash) J/c 13 (center of dash) J/c 28 & 29 (left kick panel) J/c 32 (right passenger's door) J/c 34 (left rear cargo area) J/c 61 (left rear cargo area) J28 J29 K13 Kul Left rear door lock motor & door unlock detection switch (in left rear door assembly) Lock Lsw Mpx1 Mpx2 Multi display Pnk Power window master switch Prg Rda Red Right front door lock control switch Right rear door lock motor & door unlock detection switch (in right rear door assembly) Sig System Unlock W/ navigation system W/o navigation system Immobilizer Wiring Diagram for Lexus RX 400h 2008 List of elements for Immobilizer Wiring Diagram for Lexus RX 400h 2008: 34 (at left kick panel) ii (right side of dash) hybrid vehicle control ecu Agnd Canh Canl Code Computer data lines system Cpub Efii Efio Gnd H29 H30 Hot at all times Hot in on or start Ig2 Ign fuse 10a Illum Imi Imo Instrument panel j/b (left side of dash) Interior lights system J/b 3 (left side of dash) Ksw Mpx-b fuse 7.5a Mpx1 Mpx2 Pnk Red Transponder key amplifier (in steering column) Transponder key computer (center of dash) Txct Unlock warning switch (under left side of dash) Vc5
BODY CONTROL MODULES
COMPUTER DATA LINES Computer Data Lines Wiring Diagram (1 of 2) for Lexus RX 400h 2008 List of elements for Computer Data Lines Wiring Diagram (1 of 2) for Lexus RX 400h 2008: 89 (behind left side of dash) j/c j11 (behind right side of dash) tire pressure warning ecu (left side of dash) instrument panel j/b (left side of dash) j/b 3 (right side of dash) j/b 4 A/c amplifier (right side of dash) A14 A20 A28 Afs ecu (w/ adaptive front lighting system) (left side of dash) Airbag sensor assembly (below center console) Auto wiper ecu (top right side of dash) B17 B18 Bat Bean ic Body ecu (behind left side of dash) C12 C13 Ca1h Ca1l Canh Canl Center cluster integration panel Combination meter Data link connector 3 (under left side of dash) F15 Gateway ecu (right side of dash) Gtx+ Gtx- H12 H22 Hot at all times Ii (at left kick panel) Instrument panel j/b (left side of dash) J/b 3 (left side of dash) J/c j17 (right side of dash) J/c j20 & j21 (right side of dash) J/c j28 & j29 (left kick panel) J/c j30 & j31 (left rear cargo area) J/c j45 & j46 (in driver's seat bottom) J20 J21 J28 J29 J30 J31 J45 J46 K11 K18 K19 Left rear power window control switch Left remote control mirror ecu (w/ driving position memory) (in left front door) Moon roof control ecu (front center of roof) Mpd1 Mpd2 Mpi1 Mpi2 Mpx Mpx+ Mpx- Mpx1 Mpx2 Mpx4 Mpx5 Mpx6 Obd fuse 7.5a Overhead j/b (front center of roof) P13 Pnk Power back door ecu (center of left "d" pillar) Power seat control switch & ecu (driver's seat) (w/ driving position memory) (under driver's seat) Power window master switch mpx2 R27 R28 Rain sensor (center front of roof, at windshield) Red Right front power window control switch Right rear power window control switch Right remote control mirror ecu (in right front door) Sil Transponder key computer (center of dash) W/ navigation W/ tire pressure W/o navigation W/o tire pressure Warning system Wfse Computer Data Lines Wiring Diagram (2 of 2) for Lexus RX 400h 2008 List of elements for Computer Data Lines Wiring Diagram (2 of 2) for Lexus RX 400h 2008: 64 (in center of dash) j/c j50, j51, j52, j53, j54 & j55 Atx+ Atx- Canh Canl Distance control ecu (left side of dash) E12 E17 Except mark levinson H29 H30 H31 Hybrid vehicle control ecu (right side of dash) J/b 4 (right side of dash) J/c j22, j26, j27 & j56 (right side of dash) J/c j42 (at rear cargo area) J/c j58 (right side of dash) J/c j59 (in center of dash) J/c j60 (right side of dash) J22 J26 J27 J50 J51 J52 J53 J54 J55 J56 Mark levinson Mpx1 Mpx2 Multi display Navigation ecu (at rear of cargo area) Nca P41 Pnk Power steering ecu (left rear of engine compt) Radio & player Rear seat entertainment display (w/ rear seat entertainment system) Red S27 S29 S39 Skid control ecu (right side of dash) Steering angle sensor (in steering column, behind steering wheel) Stereo component amplifier (center rear of vehicle) Tilt & telescopic ecu (at base of steering column) Tx+ Tx- Tx1+ Tx1- Tx2+ Tx2- Tx4+ Tx4- W/ driving position memory W/ navigation W/ rear seat entertainment & w/ navigation W/ rear seat entertainment & w/o navigation W/o driving position memory W/o navigation Wfse Yaw rate sensor (center of vehicle)
COOLING FAN Cooling Fan Wiring Diagram for Lexus RX 400h 2008 List of elements for Cooling Fan Wiring Diagram for Lexus RX 400h 2008: 26 (behind left side of dash) junction connector 7 & 8 Engine coolant temperature sensor (on top front of engine) Engine room r/b (on left side of engine compt) F16 Fusible link block (left side of engine compt) Gnd H32 H34 Heater fuse 7.5a Hot at all times Hot in on or start Hybrid vehicle control ecu (right side of dash) Instrument panel j/b (left side of dash) Junction connector 6 (behind left side of dash) Left cooling fan ecu (left front of engine compt) Pnk Pr2 Pressure switch (right front of engine compt) Rdi fan 1 relay Rdi fan 2 relay Rdi fan fuse 40a Rfc1 Rfc2 Right cooling fan ecu (right front of engine compt) Si2 Thw
CRUISE CONTROL Cruise Control Wiring Diagram, with Dynamic Laser Controls (1 of 2) for Lexus RX 400h 2008 List of elements for Cruise Control Wiring Diagram, with Dynamic Laser Controls (1 of 2) for Lexus RX 400h 2008: 81 (at left rear hub assembly) left rear speed sensor (at right rear hub assembly) right rear speed sensor (left side of engine compt) (left top of dash) +b1 +bm 2wd 4wd Accel position sensor (left side of dash, on accelerator pedal) Batt Canh Canl Cchg Ccs Computer data lines system Data link connector 3 (under left side of dash) E01 E02 E03 E04 E05 E12 Ed (front of engine) Ee (rear of engine) Engine controls system Eom Ep1 Ep2 Epa2 Etcs fuse 10a Fusible link block G12 Gauge fuse 7.5a Ge01 H10 H11 H12 H21 H29 H30 H31 H32 H33 H34 Hot at all times Hot in on or start Hybrid vehicle control ecu (right side of dash) Igct fuse 10a Ign fuse 10a Igsw Instrument panel j/b (left side of dash) J/b 3 (left side of dash) J/c 10 (behind left side of dash) J/c 13 (center of dash) J/c 17 (right side of dash) J/c 20 & 21 (right side J/c 7 & 8 (behind left side of dash) J20 J21 K11 Lgnd Me01 Nca Of dash) Pnk R/b 4 (left side of engine compt) Red Shift lever position sensor (park/neutral position switch) (left front of engine compt) Spd1 St1- Stop fuse 10a Stop light switch Stp Throttle position sensor & motor (on throttle body) Vcp1 Vcp2 Vpa Vpa1 Vpa2 Vta Vta2 Cruise Control Wiring Diagram, with Dynamic Laser Controls (2 of 2) for Lexus RX 400h 2008 List of elements for Cruise Control Wiring Diagram, with Dynamic Laser Controls (2 of 2) for Lexus RX 400h 2008: 75 (on left front wheel hub bracket) left front speed sensor (on right front wheel hub bracket) right front speed sensor (right side of dash) skid control ecu (top left side of dash) (top right side of dash) auto wiper ecu +res -set A28 A29 Bean ic C12 C13 Cancel Canh Canl Ccs Combination meter Combination switch Computer data lines system Cruise ind Distance control ecu (left side of dash) Distance control switch Drive ic Ecc Ecu-ig 2 fuse 10a Ee (rear of engine) F19 Fl+ Fl- Fr+ Fr- Fss Fwas G10 Gnd Hot in on or start Ig2+ Igb Ij (left top of dash) Instrument panel j/b (left side of dash) J/c 10 (behind left side of dash) J/c 13 (center of dash) J/c 18 & 19 (right side of dash) J/c 7 & 8 (behind left side of dash) J/c 9 (behind left side of dash) J18 J19 Laser sensor (right front of vehicle, below headlight) Lcd (multi- display) Lgnd Lrdd Lrrd Master warning Microcomputer Mode Nca On/off Pnk R/n Ready ind Red Rl+ Rl- Rr+ Rr- Rss S38 S39 S40 S41 Sgnd Sp1 Speedometer Wash Wip2 Cruise Control Wiring Diagram, without Dynamic Laser Controls for Lexus RX 400h 2008 List of elements for Cruise Control Wiring Diagram, without Dynamic Laser Controls for Lexus RX 400h 2008: 94 (left side of engine compt) (left top of dash) (under left side of dash) data link connector 3 +b1 +bm Accel position sensor (left side of dash, on accelerator pedal) Batt Bean ic C13 Cancel Canh Canl Ccs Combination meter Combination switch Computer data lines system Cruise control switch Cruise ind Drive ic E01 E02 E03 E04 E05 E12 Ecc Ed (front of engine) Ee (rear of engine) Engine controls system Eom Ep1 Ep2 Etcs fuse 10a Fusible link block G10 G12 Gauge fuse 7.5a Ge01 H10 H12 H21 H29 H30 H31 H32 H33 H34 Hot at all times Hot in on or start Hybrid vehicle control ecu (right side of dash) Ig2+ Igct fuse 10a Ign fuse 10a Igsw Ik (top left side of dash) Instrument panel j/b (left side of dash) J/b 3 (left side of dash) J/c 10 (behind left side of dash) J/c 13 (center of dash) J/c 17 (right side of dash) J/c 20 & 21 (right side J/c 7 & 8 (behind left side of dash) J20 J21 K11 M5 pnk Me01 Microcomputer Nca Of dash) On/off Pnk R/b 4 (left side of engine compt) Red Res/ acc S39 Set/ coast Shift lever position sensor (park/neutral position switch) (left front of engine compt) Skid control ecu (right side of dash) Sp1 Spd1 Speedometer St1- Stop fuse 10a Stop light switch Stp Throttle position sensor & motor (on throttle body) Vcp1 Vcp2 Vpa Vpa1 Vpa2 Vta1 Vta2
DEFOGGERS Heated Mirrors Wiring Diagram, with Memory for Lexus RX 400h 2008 List of elements for Heated Mirrors Wiring Diagram, with Memory for Lexus RX 400h 2008: 31 Bdr Bdt Computer data lines system Gnd Hot at all times Htr+ Htr- Ij (left top of dash) Instrument panel j/b (left side of dash) J/c 13 (center of dash) J/c 28 & (left kick panel) J/c 28 & 29 (left kick panel) J/c 32 & (right passenger's door) J/c 32 & 33 (right passenger's door) J28 J29 J32 J33 K10 Left remote control mirror Left remote control mirror ecu (in left front door) Mirror heater Mpx1 Pwr fuse 30a R27 R28 R29 R30 Red Right remote control mirror Right remote control mirror ecu (in right front door) Heated Mirrors Wiring Diagram, without Memory for Lexus RX 400h 2008 List of elements for Heated Mirrors Wiring Diagram, without Memory for Lexus RX 400h 2008: 27 A/c amplifier (right side of dash) Deicer relay F16 Fdef Fr def fuse 25a Front window deicer (left rear of engine compt) G10 Gnd Heater fuse 7.5a Hot at all times Hot in on or start Ii (at left kick panel) Ij (left top of dash) Instrument panel j/b (left side of dash) J/b 3 (left side of dash) J/c 13 (center of dash) J/c 5 (left front of engine compt, behind headlight) J/c 7 (behind left side of dash) J12 Left remote control mirror M18 Mir htr fuse 10a Mirror heater O13 Pnk R/b 1 (left side of dash) Right remote control mirror Rear Defogger Wiring Diagram for Lexus RX 400h 2008 List of elements for Rear Defogger Wiring Diagram for Lexus RX 400h 2008: 26 A/c amplifier (right side of dash) Dfg F16 Fusible link block (left side of engine compt) G10 Gnd H11 H12 Heater fuse 7.5a Hot at all times Hot in on or start Ii (at left kick panel) Instrument panel j/b (left side of dash) J/b 2 (left side of engine compt) J/b 3 (left side of dash) J/c 36 (at rear cargo area) J/c 7 & 8 (behind left side of dash) Mode monitor terminal Noise filter & rear window defogger (at rear window) Noise filter (rear window defogger) (at top front of engine) Pnk Rear window defogger Red Rr def fuse 40a Rr-def relay Solid state
ELECTRONIC POWER STEERING Electronic Power Steering Wiring Diagram for Lexus RX 400h 2008 List of elements for Electronic Power Steering Wiring Diagram for Lexus RX 400h 2008: 65 (left rear of cargo area) bo Ba (right rear cargo area) Bb (center of rear seat) Bean ic Canh Canl Cbp Cep Combination meter Computer data lines system Drdd Drive ic Ecu ig 1 fuse 7.5a Eu (center rear of engine compt) Ex (left rear of engine compt) Ez (left front of engine compt) Fusible link block (left side of engine compt) G10 G12 Gauge 2 fuse 7.5a Gnd Hot at all times Hot in on or start Ig2+ Ik (top left side of dash) Incs Insn Instrument panel j/b (left side of dash) J/c 18 & 19 (right side of dash) J/c 35 (left rear cargo area) J18 J19 Micro computer Mpx-b1 fuse 7.5a Nca Oucs Ousn P/s ind P41 P42 P45 P46 P47 Pgnd Pig Power steering converter (left rear of cargo area) Power steering ecu (left rear of engine compt) Power steering motor (on steering gear) Power steering torque sensor (on steering gear assembly) Red Rotation angle sensor (on steering gear assembly) Rzcs Rzg Rzsc Rzsn Rzv Sil Srzg System main relay (under center of rear seats) Tqg2 Trqg1 Trqv Vout Wdd1 Wdd2 Power Tilt Steering Column Wiring Diagram for Lexus RX 400h 2008 List of elements for Power Tilt Steering Column Wiring Diagram for Lexus RX 400h 2008: 41 Becu Body ecu (behind left side of dash) C10 Combination switch Computer data lines system D10 Down Ecu-b 1 fuse 7.5a Ecu-ig 1 fuse 7.5a Ecub F11 Fusible link block (left side of engine compt) Gnd Hot at all times Hot in on or start Ii (at left kick panel) Ij (left top of dash) Instrument panel j/b (left side of dash) J/b 3 (left side of dash) L12 Long Mpx1 Mpx2 Msw Red Short Telescopic motor Telescopic sensor Tem+ Tem- Tes Tilt & telescopic ecu (at base of steering column) Tilt motor Tilt motor (at base of steering column) Tilt sensor Tim+ Tim- Tis Tl & te fuse 30a Vce Vci
ENGINE PERFORMANCE
3.3L 3.3L, Engine Performance Wiring Diagram (1 of 7) for Lexus RX 400h 2008 List of elements for 3.3L, Engine Performance Wiring Diagram (1 of 7) for Lexus RX 400h 2008: 72 (front of engine) ed (left front of engine compt) shift lever position sensor (park/neutral position sw) (on front side of engine) crankshaft position sensor (on left rear of engine) left vvt sensor (on left rear of engine) right vvt sensor (on top of fuel tank) fuel pump & fuel sender (main) (right side of dash) j/c 17 (top rear of engine) left vvt solenoid (top rear of engine) right vvt solenoid Bo (left rear of cargo area) Bs1 Bs1g Bs2 Bs2g Bth+ Bth- Canh Canister pressure sensor Canister pump module (left rear vehicle chassis) Canl Ccv2 Computer data lines system Con1 Con2 Con3 Detection E03 E12 Ed (front of engine) Ee (rear of engine) Engine coolant temperature sensor (on top front of engine) Eom Exterior lights system Fuel tank pressure sensor Fuo Ge01 H30 H31 Hybrid vehicle control ecu (right side of dash) Ij (left top of dash) Ilk J/c 13 (center of dash) Leak Left rear circuit breaker sensor (left rear of vehicle) Me01 Mops Mpmp Nca Ne+ Ne- Oc1+ Oc1- Oc2+ Oc2- Oil pressure switch (on left front corner of engine) Ppmp Ptnk Pump Red Right rear circuit breaker sensor (right rear of vehicle) Rmt Rmtg Shield Si0 Si1 Si2 Trunk, tailgate, fuel doors system Vcc Vent valve Vpmp Vv1+ Vv2+ 3.3L, Engine Performance Wiring Diagram (2 of 7) for Lexus RX 400h 2008 List of elements for 3.3L, Engine Performance Wiring Diagram (2 of 7) for Lexus RX 400h 2008: 39 (left side of engine compt) fusible link block (left side of engine compt) r/b 3 (on left side of engine compt) engine room r/b A/f fuse 25a A/f relay A1a+ A1a- A2a+ A2a- Air fuel ratio sensor (bank 1 sensor 1) (in right exhaust manifold) Air fuel ratio sensor (bank 2 sensor 1) (in left exhaust manifold) C/opn relay Fuel vapor containment valve Fusible link block (left side of engine compt) Ha1a Ha2a Heated oxygen sensor (bank 1 sensor 2) (in exhaust, rear of catalytic converter) Heated oxygen sensor (bank 2 sensor 2) (below driver's floor, in exhaust) Hot at all times Ht1b Ht2b Igct 1 fuse 50a Igct 2 fuse 10a Igct 3 fuse 10a Igct 4 fuse 10a Igct relay Inv w/p fuse 15a J/c 17 (right side of dash) J/c 20 & 21 (right side of dash) J/c 6 (behind left side of dash) J20 J21 Mode monitor terminal Nca Ox1b Ox2b Pnk Red Shield 3.3L, Engine Performance Wiring Diagram (3 of 7) for Lexus RX 400h 2008 List of elements for 3.3L, Engine Performance Wiring Diagram (3 of 7) for Lexus RX 400h 2008: 55 (behind left side of dash) j/c 10 (behind right side of rear bumper) bt (center of rear seat cushion) system main relay (left side of engine compt) j/b 2 A/c ambient temperature sensor (behind front grille) A1a+ A1a- A2a+ A2a- Air conditioning system Batt fan fuse 15a Batt fan relay Clk Dc/ dc-s fuse 10a Dc/dc fuse 120a E04 E05 Ed (front of engine) Ekn2 Eknk Electronic power steering system Etcs fuse 10a Eti Fuse 15a Fusible link block (left side of engine compt) H33 Ha1a Ha2a Hot at all times Ht2b Hybrid vehicle control ecu (right side of dash) Ilk Ilki Inj 6 Inter lock switch Ite Knk1 Knk2 Knock sensor 1 (bank 1) (on top of engine, under intake manifold) Knock sensor 2 (bank 2) (on top of engine, under intake manifold) Nca Ox2b Pnk R/b 4 (left side of engine compt) Red S44 S45 S46 S47 S48 S49 Smr1 Smr2 Smr3 Stb 3.3L, Engine Performance Wiring Diagram (5 of 7) for Lexus RX 400h 2008 List of elements for 3.3L, Engine Performance Wiring Diagram (5 of 7) for Lexus RX 400h 2008: 61 (left side of dash) j/b 3 Anti-lock brakes system Bean ic Bo (left rear of cargo area) Buzzer Center battery blower motor (under rear seat assembly) Charge ind Combination meter Computer data lines system D13 Drive ic F16 Front motor generator 2 (left side of engine compt) G10 G12 Gauge 2 fuse 7.5a Gnd H10 Hot at all times Hot in on or start Ig2+ Ik (top left side of dash) Ind Instrument panel j/b (left side of dash) J/c 35 (left rear cargo area) J/c 6 (behind left side of dash) J/c 62 (left rear cargo area) J/c 9 (behind left side of dash) Lcd (multi display) Left battery blower motor M11 M14 M15 Main batt ind Malfunction ind Master warning Mcs Mcsg Micro computer Mmt Mmtg Mrf Mrfg Msn Msng Oil pump fuse 10a Oil pump motor (transaxle) (left front of engine compt) Oil pump relay Opg Opm1 Opst Pnk Power meter R/b 4 (left side of engine compt) Ready ind Red Right battery blower motor (under rear passenger's seat) Si0 Si1 Si2 Speedometer 3.3L, Engine Performance Wiring Diagram (6 of 7) for Lexus RX 400h 2008 List of elements for 3.3L, Engine Performance Wiring Diagram (6 of 7) for Lexus RX 400h 2008: 91 (at top front of engine) noise filter (near air cleaner housing, on air duct) mass air flow meter (rear of engine) ee (right side of dash) j/c 17 (top of left valve cover) ignition coil & igniter 2 (top of left valve cover) ignition coil & igniter 4 (top of left valve cover) ignition coil & igniter 6 (top of right valve cover) ignition coil & igniter 1 (top of right valve cover) ignition coil & igniter 3 (top of right valve cover) ignition coil & igniter 5 (under rear seat, (under rear seat, on hybrid vehicle battery) battery voltage sensor B27 ib B28 B28 igct B29 B30 B31 B32 Battery current sensor Bo (left rear of cargo area) Bth+ Bth- Busber module 1 Busber module 2 Busber module 3 E2g Ed (front of engine) Gb0 Gb1 Gb2 Gb3 Gb4 Gb5 Gb6 Gb7 Gbb Gib Gnd H35 H36 Hot in on or start Hybrid vehicle battery Hybrid vehicle battery (under rear seat) Igf Igt1 Igt2 Igt3 Igt4 Igt5 Igt6 Inj fuse 20a Instrument panel j/b (left side of dash) J/c 34 (left rear cargo area) On hybrid Pnk Red S42 S43 Service plug Shield Short connector Tb0 Tb1 Tb2 Tb3 Tb4 Tb5 Tb6 Tb7 Tha Vbb1 Vbb10 Vbb11 Vbb12 Vbb13 Vbb14 Vbb15 Vbb2 Vbb3 Vbb4 Vbb5 Vbb6 Vbb7 Vbb8 Vbb9 Vechile battery) Vib Vm0 Vm1 Vm2 3.3L, Engine Performance Wiring Diagram (7 of 7) for Lexus RX 400h 2008 List of elements for 3.3L, Engine Performance Wiring Diagram (7 of 7) for Lexus RX 400h 2008: 89 (left side of intake manifold) (on throttle body) throttle position sensor & motor (rear of engine) ee (right side of dash) j/c 17 (right side of intake manifold) Abfs As1 As1g Batt Battery thermometer sensor (right side of engine compt) Data link connector 3 (under left side of dash) Dome fuse 7.5a E01 E02 Ed (front of engine) Efii Efio Evg Front circuit breaker sensor (rear of engine) Fuel Fuel inj 1 Fuel inj 2 Fuel inj 3 Fuel inj 4 Fuel inj 5 Fuel inj 6 Fusible link block (left side of engine compt) Gmt Gmtg H12 H21 H29 H32 Hot at all times Hot in on or start Hot in start Ht1b Hybrid vehicle control ecu (right side of dash) Igct 5 fuse 10a Igf Ign fuse 10a Igsw Igt1 Igt2 Igt3 Igt4 Igt5 Igt6 Imi Imo Inj 1 Inj 2 Inj 3 Inj 4 Inj 5 Instrument panel j/b (left side of dash) Iwp J/b 3 (left side of dash) J/c 5 (left front of engine compt, behind headlight) J/c 7 & 8 (behind left left side of dash) j8 Lidc Lst1 Lst2 Mmt Mmtg Niwp Ox1b Pmet Pnk Prg R/b 4 (left side of engine compt) Red Shield Spdi St fuse 7.5a St1- St2 Stop fuse 10a Stop light switch Stp Tha Thb Thw Transponder key computer (center of dash) Trunk, tailgate, fuel doors system Vsv (purge) (on top center of engine) Vta Vta2 Water pump motor (inverter) (behind left headlight)
EXTERIOR LIGHTS Back-up Lamps Wiring Diagram for Lexus RX 400h 2008 List of elements for Back-up Lamps Wiring Diagram for Lexus RX 400h 2008: 27 Bk/up lp relay Fusible link block (left side of engine compt) Gauge 1 fuse 7.5a H13 H16 H30 H31 Hot in on or start Hot w/ igct relay energized Hybrid vehicle control ecu (right side of dash) Igct 2 fuse 10a Instrument panel j/b (left side of dash) J/b 2 (left side of engine compt) J/c 10 (behind left side of dash) J/c 36 (at rear cargo area) J/c 4 (left front of engine compt, behind headlight) J/c 40 (at rear cargo area) J/c 41 (at rear cargo area) J/c 7 & 8 (behind left side of dash) Left back-up light Mode monitor terminal Pnk R/b 3 (left side of engine compt) Rear j/b (left rear side of cargo area) Red Right back-up light Shift lever position sensor (park/neutral position switch) (left front of engine compt) Exterior Lamps Wiring Diagram (1 of 2) for Lexus RX 400h 2008 List of elements for Exterior Lamps Wiring Diagram (1 of 2) for Lexus RX 400h 2008: 56 (center of dash) A10 Bo (left rear of cargo area) Body ecu (behind left side of dash) C10 Center cluster integration panel (w/o navigation) Combination meter Combination switch D11 D14 D15 D16 Ehw F14 Fusible link block (left side of engine compt) Gauge 1 fuse 7.5a Gnd Haz Haz fuse 15a Head Hot at all times Hot in on or start Ii (at left kick panel) Instrument panel j/b (left side of dash) J/b 3 (left side of dash) J/c 3 (right front of engine compt, behind headlight) J/c 3 (right front of engine compt,behind headlight) J/c 35 (left rear cargo area) J/c 4 (left front of engine compt, behind headlight) J/c 4 (left front of engine compt,behind headlight) Left Left front side marker light Left front turn signal light Left parking light Left rear combination light Left turn ind Light off control switch Multi display (w/ navigation) P12 Pnk Red Right Right front side marker light Right front turn signal light Right parking light Right rear combination light Right turn ind Stop Tail Tail fuse 10a Tail ind Tail relay Trly Turn Turn signal flasher (behind left end of dash) Turn signal switch Exterior Lamps Wiring Diagram (2 of 2) for Lexus RX 400h 2008 List of elements for Exterior Lamps Wiring Diagram (2 of 2) for Lexus RX 400h 2008: 68 (left rear of cargo area) bo (on left side of engine compt) engine room r/b (right side of dash) skid control ecu (w/ dynamic radar cruise control) brk relay A10 A20 Body ecu Bq (behind left side of rear bumper) Bs1 C10 C15 C16 C17 C18 C19 C20 Converter towing D10 D11 D13 Dome fuse 7.5a Ecu-b 1 fuse 7.5a Exi F12 F16 Fusible link block (left side of engine compt) H21 High mounted Hot at all times Hybrid vehicle control ecu (right side of dash) Instrument panel j/b (left side of dash) J/b 3 (left side of dash) J/b 4 (right side of dash) J/b ecu J/c 35 (left rear cargo area) J/c 36 (at rear cargo area) J/c 37 (at rear cargo area) J/c 40 (at rear cargo area) J/c 41 (at rear cargo area) J/c 42 (at rear cargo area) J/c 7 & 8 (behind left side of dash) J13 Left license plate light Left rear side marker light Left tail light Pnk Rear j/b (left rear side of cargo area) Right license plate light Right rear side marker light Right tail light S38 S40 S41 Sensor light failure Shift lock ecu (under center console, beside shift lever) Stop fuse 10a Stop light Stop light switch Stp Stp1 Towing fuse 30a Trailer socket Ttla Ttls Ttrs Twz1 W/ dynamic radar cruise control W/o dynamic radar cruise control
GROUND DISTRIBUTION Ground Distribution Wiring Diagram (1 of 4) for Lexus RX 400h 2008 List of elements for Ground Distribution Wiring Diagram (1 of 4) for Lexus RX 400h 2008: 70 (inverter) water pump motor (left front of engine compt) (left side of engine compt) j/b 2 (left side of engine compt) r/b 3 (left side of engine compt) r/b 4 (on left side of engine compt) engine room r/b (transaxle) oil pump motor (w/ navigation system) multi-display (w/o navigation system) center cluster integration panel A/f relay A14 Afs ecu Back up lamp relay Brake actuator Brake fluid level warning switch Drl relay 3 Drl relay 4 Ea (at right side of engine compt) Eb (at right of surge tank) Ec (at rear of surge tank) Ef (left front of engine compt) Engine hood courtesy switch Ey (left rear of engine compt) Ez (left front of engine compt) Front window deicer Front wiper motor H13 Headlight beam level control ecu Headlight cleaner control relay Heater relay Ig1 b relay Igct relay Ih (at left side of dash) Il (center of dash) Inverter relay Junction connector 11 (behind left side of dash) Junction connector 2 Junction connector 3 Junction connector 4 Junction connector 5 Junction connector 6 Junction connector 9 (behind left side of dash) Keyless buzzer Left cooling fan ecu Left front fog light Left front side marker light Left front turn signal light Left headlight Left parking light Oil pump relay Overhead j/b & multi-display shield P41 Power steering ecu Pressure switch Radio & player Rdi fan relay 1 Rdi fan relay 2 Right cooling fan ecu Right front fog light Right front side marker light Right front turn signal light Right headlight Right parking light S38 S39 S40 S41 Skid control ecu W/ adaptive front-lighting system w/o adaptive front-lighting system w/ daytime running light w/o daytime running light Water pump motor (a/c) Ground Distribution Wiring Diagram (2 of 4) for Lexus RX 400h 2008 List of elements for Ground Distribution Wiring Diagram (2 of 4) for Lexus RX 400h 2008: 81 (left rear side of cargo area) rear j/b (w/ memory) left remote control mirror ecu (w/ memory) power seat control switch & ecu (driver's seat) (w/ memory) right remote control mirror ecu (w/ power back door) power back door closer switch (w/o memory) power seat control switch (driver's seat) B11 B12 B28 Back door lock assembly Back door opener switch Back door w/ power Battery voltage sensor Blower motor controller Bn (at left "b" pillar) Bo (left rear of cargo area) Bq (behind left side of rear bumper) Br (left rear cargo area) Bt (behind right side of rear bumper) Buckle switch (driver's side) Center battery blower motor Door control receiver Driver's side door key lock & unlock switch, door lock motor & door unlock detection switch Driving position memory switch From ground b im (diagram 4 of 4) From junction a connector 13 (diagram 4 of 4) Front passenger's side door lock motor & door unlock detection switch Fuel lid courtesy switch Fuel pump High mounted stop light Ij (left top of dash) J/b ecu J28 J29 J32 J33 J45 J46 Junction connector 13 (center of dash) Junction connector 28 & 29 (left kick panel) Junction connector 32 & 33 (right passenger's door) Junction connector 34 (left rear cargo area) Junction connector 35 (left rear cargo area) Junction connector 36 Junction connector 40 (at rear cargo area) Junction connector 45 & 46 (in driver's seat bottom) Junction connector 62 (left rear cargo area) Left backup light Left battery blower motor Left license plate light Left rear combination light Left rear door lock motor & door unlock detection switch Left rear power window control switch Left rear side marker light Left taillight Noise filter & rear window defogger P14 P33 P46 Power back door ecu Power seat control switch (driver's seat lumbar support control) Power steering converter Power window master switch R27 R28 Rear power outlet Right backup light Right battery blower motor Right front door lock control switch Right front power window control switch Right license plate light Right rear combination light Right taillight S48 Seat heater (driver's seat) System main relay Tilt & telescopic ecu Trailer socket Voltage inverter W/ power back door W/o power back door Ground Distribution Wiring Diagram (3 of 4) for Lexus RX 400h 2008 List of elements for Ground Distribution Wiring Diagram (3 of 4) for Lexus RX 400h 2008: 66 (if equipped) rear seat entertainment display (w/ navigation system) navigation ecu Accel position sensor shield Bd (behind right quarterpanel) Bp (lower right "b" pillar) Bs (right rear of cargo area) C13 C18 Canister pump module Combination switch Compressor motor Crankshaft position sensor shield Data link connector 3 Distance control ecu Ed (front of engine) Ee (rear of engine) Front passenger's seat heater Front passenger's side buckle switch Front passenger's side power seat control switch Front power outlet Gnd H11 H31 H32 H33 Heated oxygen sensor (bank 2 sensor 2) shield Hybrid vehicle control ecu Hybrid vehicle control ecu shield Ignition coil & igniter 1 Ignition coil & igniter 2 Ignition coil & igniter 3 Ignition coil & igniter 4 Ignition coil & igniter 5 Ignition coil & igniter 6 J/b 3 (left side of dash) J20 J21 J47 J48 Junction connector 10 (behind left side of dash) Junction connector 17 (right side of dash) Junction connector 20 & 21 (right side of dash) Junction connector 37 (at rear cargo area) Junction connector 42 Junction connector 47 & 48 (under passenger's seat) Junction connector 60 (right side of dash) K11 Laser sensor Left vvt sensor shield Mass air flow meter shield Nca Occupant classifi- cation ecu Power seat control switch (front passenger's seat lumbar support control) R14 Red Right rear door lock motor, door unlock detection switch Right rear power window control switch Right rear side marker light Right vvt sensor shield S51 Sel1 Skid control ecu shield Stereo component amplifier Throttle position sensor & motor shield Yaw rate sensor Yaw rate sensor shield Ground Distribution Wiring Diagram (4 of 4) for Lexus RX 400h 2008 List of elements for Ground Distribution Wiring Diagram (4 of 4) for Lexus RX 400h 2008: 76 (front center of roof) overhead j/b (inverter) main switch (left side of dash) instrument panel j/b (w/o memory) left remote control mirror (w/o memory) right remote control mirror A/c amplifier A20 A28 Acc relay Afs off switch Air bag sensor assembly Auto wiper ecu B11 B12 Ba (right rear cargo area) Bb (center of rear seat) Body ecu C10 C11 C12 Cigarette lighter Combination meter Combination switch Compressor motor & inverter shield Data link connector E10 E20 Eu (center rear of engine compt) Ev (left rear of engine) Ew (left rear of engine) Ex (left rear of engine compt) F10 F19 F20 Front interior light Fuel lid opener switch G10 Gateway ecu Glove box light H30 Hybrid vehicle control ecu Ig1 relay Ii (at left kick panel) Ik (top left side of dash) Im (at right kick panel) Instrument panel j/b (left side of dash) J/b 3 (left side of dash) J/b 4 (right side of dash) J14 J15 Junction connector 13 (center of dash) Junction connector 14 & 15 (center of dash) Key interlock solenoid Left vanity light Moon roof control ecu Nca Power back door opener/ closer switch Power steering motor shield Rain sensor Remote control mirror switch Right vanity light Seat heater switch Shift lock ecu Steering angle sensor System main relay shield Tilt motor Tire pressure warning ecu Tire pressure warning reset switch Tire pressure warning select switch To ground ij (diagram 2 of 4) To junction connector 13 (diagram 2 of 4) Transponder key computer Turn signal flasher Unlock warning switch W/o driver position memory Washer level warning switch
HEADLIGHTS Adaptive Front Lighting Wiring Diagram (1 of 2) for Lexus RX 400h 2008 List of elements for Adaptive Front Lighting Wiring Diagram (1 of 2) for Lexus RX 400h 2008: 58 (at right rear suspension) right rear height control sensor (behind left side of dash) j/c 6 A14 A15 Afs ecu (left side of dash) Afs off ind Afs off switch Anti-lock brakes system Combination meter Computer data lines system Drive ic Ecu-ig 2 fuse 10a Eis Esl Esr F19 G10 G12 Gauge 2 fuse 7.5a Hot in on or start Ig2+ Igs Igsl Igsr Ik (top left side of dash) Instrument panel j/b (left side of dash) J/c 6 (behind left side of dash) J/c 7 & 8 (behind left side of dash) J/c 9 (behind left side of dash) Ll1+ Ll1- Ll2+ Ll2- Lr1+ Lr1- Lr2+ Lr2- Mpx1 Msw Pnk Red Sbgl Sbgr Sbll Sblr Sbr Sgr Shb Shg Shrl Shrr Spdl Spdr Ss+ Ss- Ss1+ Ss1- Steering angle sensor (in steering column, behind steering wheel) Adaptive Front Lighting Wiring Diagram (2 of 2) for Lexus RX 400h 2008 List of elements for Adaptive Front Lighting Wiring Diagram (2 of 2) for Lexus RX 400h 2008: 48 Auto Body ecu (behind left side of dash) Bus gnd Bus line Combination switch Computer data lines system Gnd H10 Head Headlights circuit Hrly Ic 1 Ic 2 Ic 3 Ii (at left kick panel) Instrument panel j/b (left side of dash) J/b 3 (left side of dash) Left headlight Left headlight ll1+ beam level ll1- control motor Left headlight swivel ecu Left headlight swivel motor Light control switch Ll2+ Ll2- Lr2+ Lr2- Magnet Motor Motor u Motor v Motor w Motor-u Motor-v Motor-w Mpx1 Mpx2 Off Pgnd Pnk Red Right headlight Right headlight lr1+ beam level lr1- control motor Right headlight swivel ecu Right headlight swivel motor Tail U-out V-out W-out Headlamps & Fog Lamps Wiring Diagram (1 of 2) for Lexus RX 400h 2008 List of elements for Headlamps & Fog Lamps Wiring Diagram (1 of 2) for Lexus RX 400h 2008: 73 (center of dash) j/c 13 (left top of dash) ij (usa) +b dome Acc Altb Auto Automatic light control sensor (behind upper left side of dash) Batb Bean ic Becu Body ecu (behind left side of dash) C14 Cltb Clte Clts Combination meter Combination switch Computer data lines system D10 D13 D16 Dimmer switch Dome fuse 7.5a Door 1 fuse 25a Door 2 fuse 25a Drive ic Drl Ecu-acc fuse 7.5a Ecu-b 1 fuse 7.5a Ecu-ig 1 fuse 7.5a Exterior lights system F10 F16 Ffgo Ffog Flash Fog light switch Fr fog fuse 15a Fr fog relay Front fog lamp Fusible link block (left side of engine compt) G10 Gnd1 Gnd2 Head Head lamp ind High High beam ind Hot at all times Hot in acc or on Hot in on or start Hot w/ tail relay energized Hrly Ii (at left kick panel) Ik (top left side of dash) Instrument panel j/b (left side of dash) J/b 3 (left side of dash) J/c 2 (in right front of engine compt, behind headlight) J/c 5 (left front of engine compt, behind headlight) Left front fog light Light control switch Low Micro computer Mpx1 Mpx2 Off Parking brake switch (left end of dash) Pkb Pnk Right front fog light Tail Tail fuse 10a Headlamps & Fog Lamps Wiring Diagram (2 of 2) for Lexus RX 400h 2008 List of elements for Headlamps & Fog Lamps Wiring Diagram (2 of 2) for Lexus RX 400h 2008: 36 (w/ drl) drl 2 relay (w/o drl) dim relay Drl 3 relay Drl 4 relay Drl fuse 7.5a Ec (at rear of surge tank) Ef (left front of engine compt) Fusible link block (left side of engine compt) G10 G11 H-lp l lwr fuse 15a H-lp l relay H-lp l upr fuse 15a H-lp r lwr fuse 15a H-lp r relay H-lp r upr fuse 15a Hdlp Headlight beam level control ecu (behind left end of dash) High Hot at all times J/b 2 (left side of engine compt) J/c 3 (right front of engine compt, behind headlight) J/c 4 (left front of engine compt, behind headlight) J/c 5 (left front of engine compt, behind headlight) J/c 6 (behind left side of dash) J/c 9 (behind left side of dash) Left headlight Light control ecu Low Main fuse 40a Mode monitor terminal Pnk R/b 3 (w/ drl) (left side of engine compt) Right headlight Solid state W/ daytime running light W/o daytime running light Headlamps Leveling Wiring Diagram for Lexus RX 400h 2008 List of elements for Headlamps Leveling Wiring Diagram for Lexus RX 400h 2008: 61 (behind left side of dash) j/c 6 +b(dome) Buzzer Combination meter D13 Dome fuse 7.5a Drive ic Ecu-ig 2 fuse 10a F16 F19 Fusible link block (left side of engine compt) G10 G12 Gauge 2 fuse 7.5a Gnd Hdlp Headlight beam level control ecu (behind left end of dash) Headlights circuit Hot at all times Hot in on or start Ik (top left side of dash) Instrument panel j/b (left side of dash) J/b 3 (left side of dash) J/c 7 & 8 (behind left side of dash) J/c 9 (behind left side of dash) Lcd (multi display) Left headlight Left headlight beam level control motor Lh1 Lh2 Lh3 Lh4 Lhb1 Lhg Master warning ind Micro computer Pnk Red Rh1 Rh2 Rh3 Rh4 Rhb1 Rhg Right headlight Right headlight beam level control motor Right rear height control sensor (at right rear suspension) Rlo Rro S39 S40 Sbr Sgr Shb Shg Shr Shrr Skid control ecu (right side of dash) Spdl Spdr Wng
HORN Horn Wiring Diagram for Lexus RX 400h 2008 List of elements for Horn Wiring Diagram for Lexus RX 400h 2008: 15 B10 Combination switch D11 Fusible link block (left side of engine compt) Horn fuse 10a Horn relay Horn switch Hot at all times Instrument panel j/b (left side of dash) J/b 2 (left side of engine compt) Left horn (left front of engine compt) Mode monitor terminal Red Right horn (right front of engine compt) Solid state
INSTRUMENT CLUSTER Instrument Cluster Wiring Diagram (1 of 2) for Lexus RX 400h 2008 List of elements for Instrument Cluster Wiring Diagram (1 of 2) for Lexus RX 400h 2008: 73 (left side of dash) instrument panel j/b (top left side of dash) ik (usa) head ind tail ind (except usa) +b(dome) +b(dome) ig2+ Abs ind Afs off ind Brake control ind Brake ind Buzzer Charge ind Circuit Combination meter Computer data lines system Cruise ind D10 D13 Dome fuse 7.5a Door ind Driver ic Driver's seat belt ind Ecu-b 1 fuse 7.5a Engine controls system Exterior lights system F16 Front fog ind Fuel Fuel ind Fuel sender (main) (on top of fuel tank) Fusible link block (left side of engine compt) G10 G12 Gauge 2 fuse 7.5a Headlights system High beam ind Hot at all times Hot in on or start Ic bean Ig2+ Ii (at left kick panel) Illumination (multi display) Illumination (ring) Illumination ind (dial lcd) Illumination ind (pointer) Instrument panel j/b (left side of dash) Interior lights system J/b 3 (left side of dash) Lcd (multi- display) Left turn ind M10 Main battery ind Malfunction ind Master warning ind Micro computer Navigation system P/s ind Pnk Power meter Ready ind Red Rheostat Rheostat trip switch Right turn ind Slip ind Sound systems Speedometer Srs ind Sw odo/trip Tcan sw Temperature Tire pressure ind Trunk, tailgate, fuel doors system Wiper/washer system Instrument Cluster Wiring Diagram (2 of 2) for Lexus RX 400h 2008 List of elements for Instrument Cluster Wiring Diagram (2 of 2) for Lexus RX 400h 2008: 63 (at left "b" pillar) left front door courtesy switch (at rear cargo area) j/c 38 (at right "b" pillar) right front door courtesy switch (at right rear "c" pillar) right rear door courtesy switch (behind left side of dash) body ecu (center of dash) j/c 14 & 15 (center of left "d" pillar) power back door ecu (in center of tailgate) back door lock assembly (left side of dash) j/b 3 A12 Bcty Brake fluid level warning ecu (in brake fluid reservoir) C11 C12 C14 Canh Canl Computer data lines system Ctye Ctyo Dcty Except mark levinson H10 H29 H30 H31 Hybrid vehicle control ecu (right side of dash) Instrument panel j/b (left side of dash) J/c 36 (at rear cargo area) J/c 40 (at rear cargo area) J/c 6 (behind left side of dash) J/c 9 (behind left side of dash) J14 J15 J19 Lbl Lcty Left rear door courtesy switch (at left rear "c" pillar) Mark levinson Mops Multi display (if equipped) Navigation ecu (if equipped) (at rear of cargo area) Oil pressure switch (on left front corner of engine) P13 Parking brake switch (left end of dash) Pcty Pkb Pnk Rcty Rear j/b (left rear side of cargo area) Red S27 S29 S39 S40 S41 Skid control ecu (right side of dash) Sp1 Spd Spdi Stereo component amplifier (center rear of vehicle) W/ power back door W/o power back door Multi-Information System Wiring Diagram for Lexus RX 400h 2008 List of elements for Multi-Information System Wiring Diagram for Lexus RX 400h 2008: 53 A10 A14 A20 Acc Air bag sensor assembly (below center console) Altb Batb Becu Body ecu (behind left side of dash) Center cluster integration panel Computer data lines system D10 D15 D16 Door 1 fuse 25a Door 2 fuse 25a Ecu-acc fuse 7.5a Ecu-b 1 fuse 7.5a Ecu-ig 1 fuse 7.5a Ehw F10 F12 F14 Fusible link block (left side of engine compt) Gauge 1 fuse 7.5a Gnd Gnd1 Gnd2 H10 Haz Hot at all times Hot in on or acc Hot in on or start Ig+ Ii (at left kick panel) Ij (left top of dash) Il (center of dash) Ind Instrument panel j/b (left side of dash) J/b 3 (left side of dash) J/c 13 (center of dash) J/c 14 & 15 (center of dash) J14 J15 Mpx+ Mpx- Mpx1 P-ab Paon Pnk Radio 2 fuse 7.5a Red Turn signal flasher (behind left side of dash)
INTERIOR LIGHTS Courtesy Lamps Wiring Diagram (1 of 2) for Lexus RX 400h 2008 List of elements for Courtesy Lamps Wiring Diagram (1 of 2) for Lexus RX 400h 2008: 78 (front center of roof) overhead j/b (multi lcd +b(dome) +b1 Acc Altb Batb Bcty Bean ic Becu Bo (left rear of cargo area) Body ecu (behind left side of dash) Combination meter Computer Computer data lines system Cty D10 D13 D16 Dcty Dcyl Display) Dome fuse 7.5a Door Door 1 fuse 25a Door 2 fuse 25a Door control receiver (top of left "d" pillar) Door ind Driver ic Ecu-acc fuse 7.5a Ecu-b 1 fuse 7.5a Ecu-b 2 fuse 7.5a Ecu-ig 1 fuse 7.5a F10 Front interior light Fspt Fusible link block (left side of engine compt) G10 Gnd1 Gnd2 Gnd3 H13 Hot at all times Hot in on or acc Hot in on or start I10 Ii (at left kick panel) Ij (left top of dash) Ik (top left side of dash) Ile Im (at right kick panel) Instrument panel j/b (left side of dash) J/b 3 (left side of dash) Junction connector 13 (center of dash) Junction connector 34 (left rear cargo area) Junction connector 61 (left rear cargo area) L10 Lcty Left front door courtesy switch (at left "b" pillar) Left rear door courtesy switch (at left rear "c" pillar) Left vanity light Master warning ind Micro Mpx1 Mpx2 Off P10 Pcty Pcyl Pnk Prg Rcty Rda Red Right front door courtesy switch (at right "b" pillar) Right rear door courtesy switch (at right rear "c" pillar) Right vanity light W/ step light Courtesy Lamps Wiring Diagram (2 of 2) for Lexus RX 400h 2008 List of elements for Courtesy Lamps Wiring Diagram (2 of 2) for Lexus RX 400h 2008: 56 A11 A13 A14 A15 A16 B12 B13 B15 Back door courtesy light Back door lock assembly (in center of tailgate) C11 C12 C13 C14 Ctye Ctyo D10 Diode F16 J/b 3 (left side of dash) J/b 4 (right side of dash) J28 J29 J30 J31 J32 J33 Junction connector 28 & 29 (left kick panel) Junction connector 30 & 31 (left rear cargo area) Junction connector 32 & 33 (right passenger's door) Junction connector 36 (at rear cargo area) Junction connector 40 (at rear cargo area) K10 K17 Left front door courtesy light Left front inside handle illumination (w/ step light) Left front scuff plate light (w/ step light) Left rear inside handle illumination (w/ step light) Left rear scuff plate light (w/ step light) Left step light Luggage compartment light Pnk Power back door ecu (center of left "d" pillar) Rear interior light Rear j/b (left rear side of cargo area) Red Right front door courtesy light Right front inside handle illumination (w/ step light) Right front scuff plate light (w/ step light) Right rear inside handle illumination (w/ step light) Right rear scuff plate light (w/ step light) Right step light Transponder key amplifier (in steering column) W/ power back door W/ step light W/o power back door Instrument Illumination Wiring Diagram for Lexus RX 400h 2008 List of elements for Instrument Illumination Wiring Diagram for Lexus RX 400h 2008: 75 (behind left side of dash) junction connector 11 (right side of dash) j/b 4 +b2 A18 A19 B18 B19 Body ecu (behind left side of dash) C10 C13 C18 C19 Center cluster integration panel Cigarette lighter illumination Cill Combination meter Combination switch Console box illumi- nation Cspt D10 D13 Dome fuse 7.5a E12 Ecu-b 1 fuse 7.5a F11 F13 F15 F16 F17 Fusible link block (left side of engine compartment) G10 G12 Gauge 2 fuse 7.5a Glove box light Head Headlight cleaner switch Hot at all times Hot in on or start Ii (at left kick panel) Ik (top left side of dash) Illu (dial lcd) Illu (multi dis) Illu (pointer) Illu (ring) Im (at right kick panel) Instrument panel j/b (left side of dash) J/b 3 (left side of dash) J/b 4 (right side of dash) J12 J14 J15 Junction connector 11 (behind left side of dash) Junction connector 14 & 15 (center of dash) Light control switch M10 Main switch (inverter) (left end of dash) Multi display Odo/ trip sw Off Overhead j/b (front center of roof) Panel fuse 7.5a Power back door opener/ closer switch R11 Radio & player Red Rheostat trip switch Seat heater switch Swg Tail Tail relay Tcan sw Transmission control switch Trly W/ navigation W/o navigation
MEMORY SYSTEMS Driver"s Memory Seat Wiring Diagram for Lexus RX 400h 2008 List of elements for Driver"s Memory Seat Wiring Diagram for Lexus RX 400h 2008: 68 (at left "b" pillar) bn (at left kick panel) ii Acc Altb B12 Batb Becu Body ecu (behind left side of dash) Computer data lines system D10 D16 Dcty Door 1 fuse 25a Door 2 fuse 25a Driver's power seat ecu (under driver's seat) Driving position memory switch Ecu-acc fuse 7.5a Ecu-b 1 fuse 7.5a Ecu-ig 1 fuse 7.5a F10 Front Frv+ frv- Frv- Fusible link block (left side of engine compartment) Gnd Gnd1 Gnd2 Hot at all times Hot in acc or on Hot in on or start Ii (at left kick panel) Ij (left top of dash) Instrument panel j/b (left side of dash) J/b 3 (left side of dash) J13 J45 J46 Junction connector 13 (center of dash) Junction connector 28 (left kick panel) Junction connector 30 (left rear cargo area) Junction connector 45 & 46 (in driver's seat bottom) Ksw Left front door courtesy switch (at left "b" pillar) Lft+ Lft- Mmry Mpx1 Mpx2 P/seat fuse 30a P32 P33 Pnk Power seat control switch (driver's seat lumbar support control) Power seat motor (driver's seat front vertical control) (in driver's seat cushion) Power seat motor (driver's seat lifter control) (in driver's seat assembly) Power seat motor (driver's seat lumbar support control) (in driver's seat assembly) Power seat motor (driver's seat reclining control) (in driver's seat) Power seat motor (driver's seat slide control) (in driver's seat) Power window master switch Rcl+ Rcl- Rear Rear j/b (left rear side of cargo area) Red Sld+ Sld- Sysb Unlock warning switch (under left side of dash) Memory Mirrors Wiring Diagram for Lexus RX 400h 2008 List of elements for Memory Mirrors Wiring Diagram for Lexus RX 400h 2008: 84 (at left kick panel) ii (left top of dash) ij Acc Altb B17 Batb Bdr Becu Body ecu (behind left side of dash) Computer data lines system Cpub D10 D16 Door 1 fuse 25a Door 2 fuse 25a Driving position memory switch Ecu-acc fuse 7.5a Ecu-b 1 fuse 7.5a Ecu-ig 1 fuse 7.5a F10 F11 Fusible link block (left side of engine compartment) Gnd Gnd1 Gnd2 Horizontal sensor Hot at all times Hot in acc or on Hot in on or start Hssr Htr+ Htr- Instrument panel j/b (left side of dash) J/b 3 (left side of dash) J28 J29 J32 J33 Junction connector 13 (center of dash) Junction connector 28 & 29 (left kick panel) Junction connector 32 & 33 (right passenger's door) K10 K13 Le1 Left remote control mirror Left remote control mirror ecu (in left front door) Left/right Lm+r Lmhr Lmvr Lvc Mirb Mire Mirror heater Mirs Mmry Mpx1 Mpx2 Mr+ Mr- Msw Pnk Power window master switch Pwr fuse 30a R27 R28 R29 R30 Re1 Red Remote control mirror switch Ret Retractable mirror motor Right remote control mirror Right remote control mirror ecu (in right front door) Rm+r Rmhr Rmvr Rvc Sig Up/down Vertical sensor Vssr W/retractor Memory Power Tilt & Power Telescopic Wiring Diagram for Lexus RX 400h 2008 List of elements for Memory Power Tilt & Power Telescopic Wiring Diagram for Lexus RX 400h 2008: 59 Acc Altb Batb Becu Body ecu (behind left side of dash) C10 Combination switch Computer data lines system D10 D16 Dcty Door 1 fuse 25a Door 2 fuse 25a Down Driving position memory switch Ecu-acc fuse 7.5a Ecu-b 1 fuse 7.5a Ecu-ig 1 fuse 7.5a Ecub F11 Fusible link block (left side of engine compartment) Gnd Gnd2 Hot at all times Hot in acc or on Hot in on or start Ii (at left kick panel) Ij (left top of dash) Instrument panel j/b (left side of dash) J/b 3 (left side of dash) Junction connector 13 (center of dash) Junction connector 28 (left kick panel) Ksw L12 Left front door courtesy switch (at left "b" pillar) Long Mmry Mpx1 Mpx2 Msw Power window master switch Red Short Telescopic motor Telescopic sensor Tem+ Tem- Tes Tilt & telescopic ecu (at base of steering column) Tilt motor Tilt motor (at base of steering column) Tilt sensor Tim+ Tim- Tis Tl & te fuse 30a Unlock warning switch (under left side of dash) Vce Vci
NAVIGATION Navigation Wiring Diagram (1 of 2) for Lexus RX 400h 2008 List of elements for Navigation Wiring Diagram (1 of 2) for Lexus RX 400h 2008: 73 (at rear cargo area) j/c 39 (at rear cargo area) j/c 42 (center of dash) j/c 14 & 15 (top left side of dash) ik A12 Acc Back-up lamp relay C14 Combination meter Crt fuse 7.5a Ecu- b 1 fuse 7.5a Ecu-acc fuse 7.5a Ecu-ig 1 fuse 7.5a F11 F12 F14 Fusible link block (left side of engine compt) G10 G12 Gauge 1 fuse 7.5a Gauge 2 fuse 7.5a Gnd1 Gvif H13 H16 H30 H31 Hot at all times Hot in on or acc Hot in on or start Hot w/ igct relay energized Hybrid vehicle control ecu (right side of dash) Ig2+ Igct 2 fuse 10a Instrument panel j/b (left side of dash) J/b 2 (left side of engine compt) J/b 3 (left side of dash) J/c 10 (behind left side of dash) J/c 14 & 15 (center of dash) J/c 38 (at rear cargo area) J/c 4 (left front of engine compt, behind headlight) J/c 7 & 8 (behind left side of dash) J14 J15 J19 Mic+ Mic- Micro computer Mode monitor terminal Navigation ecu (at rear of cargo area) Nca O10 Pnk Pwr sply circuit R/b 3 (left side of engine compt) Radio 2 fuse 7.5a Radio fuse 15a Rear j/b (left rear side of cargo area) Red Red a9 Red c7 Rev S39 Shift lever position sensor (park/neutral position switch) (left front of engine compt) Skid control ecu & w/ actuator (right side of dash) Sld1 Sp1 Spd Speedo meter Tx+ Tx- Voi+ Voi-
PASSIVE RESTRAINTS Passive Restraints Wiring Diagram for Lexus RX 400h 2008 List of elements for Passive Restraints Wiring Diagram for Lexus RX 400h 2008: 17 (left rear side of cargo area) Bn (at left "b" pillar) Bp (lower right "b" pillar) Driver's side buckle switch (on left seat belt buckle) Front passenger's side buckle switch (in seat belt buckle) Gauge 1 fuse 7.5a Hot in on or start Instrument panel j/b (left side of dash) J/c 45 & 46 (in driver's seat bottom) J/c 47 & 48 (under passenger's seat) J45 J46 J47 J48 Left tension reducer solenoid (at base of left "b" pillar) Rear j/b Right tension reducer solenoid (at base of right "b" pillar)
POWER DISTRIBUTION Power Distribution Wiring Diagram (1 of 3) for Lexus RX 400h 2008 List of elements for Power Distribution Wiring Diagram (1 of 3) for Lexus RX 400h 2008: 89 (left side of dash) instrument panel j/b (left side of engine compartment) fusible link block (not used) A/f fuse 25a Air conditioning system Am2 1 fuse 30a Amp fuse 30a Anti-theft & horns systems Anti-theft, door locks, mirrors, headlights, power windows, trunk, tailgate, fuel doors, wiper/washer, interior lights, exterior lights, warning, power tops, memory & body computer systems Battery Body computer, power windows, memory & mirrors systems Body ecu Computer data lines system Cooling fans system Crt fuse 7.5a D14 Dc/dc fuse 120a Defogger system Dome fuse 7.5a Door 1 fuse 25a Door locks, mirrors, body computer, anti-theft, memory & power windows systems Door locks, power windows, power tops & anti-theft systems Ecu-b1 fuse 7.5a Ecu-b2 fuse 7.5a Electronic power steering system Engine controls system Engine controls, wiper/washer, cruise control, shift interlock, exterior lights & anti-lock brakes systems Exterior lights system Exterior lights, cruise control & anti-lock brakes systems F17 Fr fog fuse 15a Fr fog relay From acc relay (diagram 2 of 3) From dc/dc Fuel opn fuse 7.5a Fuse (diagram 1 of 3) Garage door opener & interior lights systems H-lp cln fuse 30a H11 Haz fuse 15a Headlights, wiper/washer, body computer & door locks Heater fuse 50a Horn fuse 10a Ig1 fuse 30a Igct 1 fuse 50a K10 L11 Lh rr door fuse 20a Main fuse 40a Mpx-b1 fuse 7.5a Nca Obd fuse 7.5a P/seat fuse 30a Panel fuse 7.5a Pbd fuse 30a Pnk Power tops system Power windows system Pwr fuse 30a Pwr outlet 2 fuse 20a R12 Radio 1 fuse 15a Rdi fan 1 fuse 40a Rdi fan 2 fuse 40a Red Rh rr door fuse 20a Rr def fuse 40a S/roof fuse 30a Seats & memory systems Seats system Short pin Sound & navigation systems Sound systems Sound, navigation & warning systems Stop fuse 10a Systems Tail fuse 10a Tail relay To abs mtr1 fuse (diagram 2 of 3) To am2 1 (diagram 1 of 3) To ig1-b relay (diagram 3 of 3) To ign 1 relay (diagram 2 of 3) To ignition switch am2 (diagram 3 of 3) To inverter relay (diagram 3 of 3) Towing fuse 30a Transmissions, engine controls, cruise control, door locks, wiper/washer, shift interlock, anti-theft & navigation systems Trly Trunk, tailgate, fuel doors system Wiper/ washer system Power Distribution Wiring Diagram (2 of 3) for Lexus RX 400h 2008 List of elements for Power Distribution Wiring Diagram (2 of 3) for Lexus RX 400h 2008: 90 (left side of engine compartment) r/b 4 (not used) Abs 1 fuse 10a Abs 2 fuse 10a Abs 3 fuse 15a Abs mtr 1 fuse 30a Abs mtr 2 fuse 30a Acc Acc relay Air conditioning, Am1 fuse 7.5a Anti-lock brakes system Anti-lock brakes, cruise control & engine control systems Anti-theft system B11 Batb Batt fan fuse 15a Body ecu C11 C12 Cig fuse 15a Cigarette lighter Computer data lines, shift interlock & mirrors systems Cooling fans & defogger systems Cruise control, air conditioning, shift interlock, mirrors, memory, computer data lines, power windows, seats, warning & anti-lock brakes systems Cruise control, anti-lock brakes & electronic power steering systems Cruise control, engine controls & shift interlock systems Cruise control, seats, trunk, tailgate, fuel doors, memory & anti-lock brakes systems Dc/dc-s fuse 10a Defogger & mirrors systems Door 2 fuse 25a Ecu-acc fuse 7.5a Ecu-ig 1 fuse 7.5a Ecu-ig 2 fuse 10a Engine controls system Etcs fuse 10a F10 F11 F12 F14 F16 F19 F20 Fr def fuse 25a Fr wip fuse 30a From fusible link block (diagram 1 of 3) From fusible link main 2 (diagram 1 of 3) From ig1 relay (diagram 2 of 3) Gauge 1 fuse 7.5a H16 Heater fuse 7.5a Ig1 relay Ii (at left kick panel) Ij (left top of dash) Im (at right kick panel) Instrument panel j/b (left side of dash) J/b 4 (right side of dash) J/c j13 (center of dash) L12 M10 M16 M18 Memory systems Mirrors, wiper/washer, electronic power steering, power tops & anti-theft systems Mpx-b fuse 7.5a Navigation & exterior lights systems Navigation, exterior lights & passive restraint systems Navigation, sound & warning systems O10 O12 Oil pump fuse 10a Pnk Pwr outlet 1 fuse 15a R10 Radio 2 fuse 7.5a Red Rr wip fuse 15a Shift interlock & engine controls systems Sound & navigation systems Ti & te fuse 30a To ignition switch acc (diagram 3 of 3) To ignition switch am1 (diagram 3 of 3) To j/b 3 (diagram 3 of 3) To r/b 3 (diagram 3 of 3) To rear j/b (diagram 3 of 3) To tail relay (diagram 1 of 3) To ti & te fuse (diagram 2 of 3) Washer fuse 20a Wiper/washer system Wiper/washer, headlights & cruise control systems Power Distribution Wiring Diagram (3 of 3) for Lexus RX 400h 2008 List of elements for Power Distribution Wiring Diagram (3 of 3) for Lexus RX 400h 2008: 59 (left end of dash) inverter main switch (not used) A18 Ac1 Ac2 Acc Am1 Am2 Anti-theft system Bo (left rear of cargo area) Bt (behind right side of rear bumper) Bd (behind right quarterpanel) D11 Engine controls system Engine controls, cruise control & anti-lock brakes systems Engine room r/b (on left side of engine compt) Exterior lights system From am2 1 fuse (diagram 1 of 3) From gauge 1 fuse (diagram 2 of 3) From ig1 fuse (diagram 1 of 3) From instrument panel j/b (acc relay) (diagram 2 of 3) From instrument panel j/b (ig1 relay) (diagram 2 of 3) From instrument panel j/b am1 fuse (diagram 2 of 3) From pwr outlet 1 fuse (diagram 2 of 3) From pwr outlet 2 fuse (diagram 1 of 3) Front power outlet G12 Gauge 2 fuse 7.5a Ig1 Ig1-b relay Ig2 Ign fuse 10a Ignition switch Ii (at left kick panel) Inj fuse 20a Instrument panel j/b (left side of dash) Inverter relay J/b 3 (left side of dash) J/c j34 (left rear cargo area) J/c j6 (behind left side of dash) J/c j9 (behind left side of dash) Lock M14 Off On off Power outlet R/b 3 (left side of engine compt) R/b 4 (left side of engine compt) Rear j/b (left rear side of cargo area) Rear power outlet Red Seat htr fuse 20a Seats system St fuse 7.5a St2 Start Transmissions, cruise control & engine controls systems Voltage inverter (left rear of cargo area) Warning & navigation systems
POWER DOOR LOCKS Power Door Locks Wiring Diagram (1 of 2) for Lexus RX 400h 2008 List of elements for Power Door Locks Wiring Diagram (1 of 2) for Lexus RX 400h 2008: 82 (at left kick panel) ii (at left rear "c" pillar) left rear door courtesy switch (at rear cargo area) Acc Act+ Act- Actd Altb Back door lock assembly (in center of tailgate) Back door opener switch (w/o power back door) (in tailgate assembly) Batb Bcty Bdsu Becu Body ecu (behind left side of dash) Buzzer Bzr C11 C12 Computer data lines system Ctye Ctyo D10 D11 D16 Dcty Door 1 fuse 25a Door 2 fuse 25a Ecu-acc fuse 7.5a Ecu-b 1 fuse 7.5a Ecu-ig 1 fuse 7.5a Engine hood courtesy switch (on front center of engine compt) Exterior lights system F10 F11 F18 Fusible link block (left side of engine compt) Gnd 1 Gnd2 Haz Hcty Horn Horns system Hot at all times Hot in acc or on Hot in on or start Ii (at left kick panel) Ind Instrument panel j/b (left side of dash) J/b 3 (left side of dash) J/c 36 J/c 40 (at rear cargo area) J/c 5 (left front of engine compt, behind headlight) J/c 6 (behind left side of dash) Keyless buzzer (left side of engine compt) Ksw Lcty Left front door courtesy switch (at left "b" pillar) Lswl Lswp Lswr Mpx1 Mpx2 P11 Pcty Pnk Power back door ecu (center of left "d" pillar) Prg Pws Rcty Rda Rear j/b (left rear side of cargo area) Red Right front door courtesy switch (at right "b" pillar) Right rear door courtesy switch (at right rear "c" pillar) Theft deterrent horn (left front of engine compt) Tr+ Trly Ul1 Unlock warning switch (under left side of dash) W/ power back door W/o power back door Power Door Locks Wiring Diagram (2 of 2) for Lexus RX 400h 2008 List of elements for Power Door Locks Wiring Diagram (2 of 2) for Lexus RX 400h 2008: 47 (left kick panel) j/c 28 (top of left "d" pillar) door control receiver Bn (at left "b" pillar) Bo (left rear of cargo area) Bp (lower right "b" pillar) Center cluster integration panel Computer data lines Cpub Driver's side door key lock & unlock switch, door lock motor & door unlock detection switch (in left front door) Ecu-b 2 fuse 7.5a Front passenger's side door lock motor & door unlock detection switch (in right front door) Fusible link block (left side of engine compt) Gnd Gnd1 H13 Hot at all times Hsy Ij (left top of dash) Il (center of dash) J/b 3 (left side of dash) J/c 13 (center of dash) J/c 28 & 29 (left kick panel) J/c 32 (right passenger's door) J/c 34 (left rear cargo area) J/c 61 (left rear cargo area) J28 J29 K13 Kul Left rear door lock motor & door unlock detection switch (in left rear door assembly) Lock Lsw Mpx1 Mpx2 Multi display Pnk Power window master switch Prg Rda Red Right front door lock control switch Right rear door lock motor & door unlock detection switch (in right rear door assembly) Sig System Unlock W/ navigation system W/o navigation system
POWER MIRRORS Electrochromic Mirror Wiring Diagram for Lexus RX 400h 2008 List of elements for Electrochromic Mirror Wiring Diagram for Lexus RX 400h 2008: 29 (at right kick panel) im Ec+ Ec- Ec- r29 Ec- r30 Eci+ Eci- Ecu-ig 1 fuse 7.5a Gnd Gnd3 Gnd5 Hot in on or start Ig1 Inner mirror Instrument panel j/b (left side of dash) J11 K13 K14 Left remote control mirror Left remote control mirror ecu (in left front door) Overhead j/b (front center of roof) Pnk R10 R27 R28 Right remote control mirror Right remote control mirror ecu (in right front door) W/ memory W/o memory Power Mirrors Wiring Diagram for Lexus RX 400h 2008 List of elements for Power Mirrors Wiring Diagram for Lexus RX 400h 2008: 26 B11 Defogger system Down Ec+ Ec- Ecu-acc fuse 7.5a Electrochromic mirror circuit Hot in acc or on Ii (at left kick panel) Instrument panel j/b (left side of dash) J/b 3 (left side of dash) Left Left remote control mirror Left/up Mlh Mlv Mrh Mrv Operation switch Pnk Red Remote control mirror switch Right Right remote control mirror Right/down Select switch
POWER SEATS Driver Power Seat Wiring Diagram for Lexus RX 400h 2008 List of elements for Driver Power Seat Wiring Diagram for Lexus RX 400h 2008: 30 (at left "b" pillar) bn Down Fdwn Front Front vertical Fup Hot at all times Instrument panel j/b (left side of dash) J45 J46 Junction connector 45 & 46 (in driver's seat bottom) Ldwn Lifter Lup P/seat fuse 30a Pnk Power seat control switch (driver's seat lumbar support control) Power seat control switch (driver's seat) Power seat motor (driver's seat front vertical control) (in driver's seat cushion) Power seat motor (driver's seat lifter control) (in driver's seat assembly) Power seat motor (driver's seat lumbar support control) (in driver's seat assembly) Power seat motor (driver's seat reclining control) (in driver's seat) Power seat motor (driver's seat slide control) (in driver's seat) Rclf Rclr Rear Reclining Sldf Sldr Slide Heated Seats Wiring Diagram for Lexus RX 400h 2008 List of elements for Heated Seats Wiring Diagram for Lexus RX 400h 2008: 34 A16 Bn (at left "b" pillar) Bp (lower right "b" pillar) C12 C16 Driver's seat heater (in driver's seat) Ecu-ig 1 fuse 7.5a F10 F11 Front passenger's seat heater (in front passenger's seat) Hot in on or start Ij (left top of dash) Ill+ Ill- Instrument panel j/b (left side of dash) Interior lights system J/b 3 (left side of dash) J/b 4 (right side of dash) J45 J46 J47 J48 Junction connector (center of dash) Junction connector 45 & 46 (in driver's seat bottom) Junction connector 47 & 48 (under passenger's seat) Pnk R/b 3 (left side of engine compartment) Red Rvl Rvr Seat heater switch Seat htr fuse 20a Swl Swr Passenger Power Seat Wiring Diagram for Lexus RX 400h 2008 List of elements for Passenger Power Seat Wiring Diagram for Lexus RX 400h 2008: 31 Bp (lower right "b" pillar) Down Fdwn Front Front vertical Fup Hot at all times Instrument panel j/b (left side of dash) J47 J48 Junction connector 47 & 48 (under passenger's seat) L11 Ldwn Lifter Lup P/seat fuse 30a Pnk Power seat control switch (front passenger's seat lumbar support control) Power seat control switch (front passenger's) Power seat motor (front passenger's seat front vertical control) (in front passenger's seat) Power seat motor (front passenger's seat lifter control) (in front passenger's seat) Power seat motor (front passenger's seat lumbar support control) Power seat motor (front passenger's seat reclining control) (in passenger's seat) Power seat motor (front passenger's seat slide control) (in passenger's seat) Rclf Rclr Rear Reclining Sldf Sldr Slide
POWER TOP/SUNROOF Power Top/Sunroof Wiring Diagram for Lexus RX 400h 2008 List of elements for Power Top/Sunroof Wiring Diagram for Lexus RX 400h 2008: 85 (left kick panel) j/c 28 & 29 +b(dome) A14 Acc Altb Batb Bean ic Becu Bo (left rear of cargo area) Body ecu (behind left side of dash) Buzzer Bzr Cls Combination meter Computer data lines system D10 D13 D16 Dcty Dome fuse 7.5a Door 1 fuse 25a Door 2 fuse 25a Door control receiver (top of left "d" pillar") Down Drive ic Driver's side door key lock & unlock switch Ecu-acc fuse 7.5a Ecu-b 1 fuse 7.5a Ecu-b 2 fuse 7.5a Ecu-ig 1 fuse 7.5a Ecub F10 F16 Fusible link block (left side of engine compt) G10 G12 Gauge 2 fuse 7.5a Gnd Gnd1 Gnd2 Gnd3 H13 Hot at all times Hot in acc or on Hot in on or start Ig3 Ii (at left kick panel) Ij (left top of dash) Ik (top left side of dash) Im (at right kick panel) Instrument panel j/b (left side of dash) J/b 3 (left side of dash) J/c 13 (center of dash) J/c 14 & 15 (center of dash) J/c 34 (left rear cargo area) J/c 5 (left front of engine compt, behind headlight) J/c 61 (left rear cargo area) J14 J15 J28 J29 Keyless buzzer (left side of engine compt) Kul Lcd (multi display) Left front door courtesy switch (at left "b" pillar) Lock M10 Master warning ind Micro computer Moon roof control ecu (front center of roof) Mpx Mpx 1 Mpx1 Mpx2 Opn Overhead j/b (front center of roof) Pnk Power window master switch Prg R10 R12 Rda Red S/roof fuse 30a Un lock
POWER WINDOWS Power Windows Wiring Diagram for Lexus RX 400h 2008 List of elements for Power Windows Wiring Diagram for Lexus RX 400h 2008: 91 (at left kick panel) ii (left side of dash) j/b 3 Acc Altb Batb Bdr Becu Bn (at left "b" pillar) Bo (left rear of cargo area) Body ecu (behind left side of dash) Bp (lower right "b" pillar) Bzr Computer data lines system Cpub D10 D14 D16 Door 2 fuse 25a Door control receiver (top of left "d" pillar) Door fuse 25a Driver's side door key lock & unlock switch, door unlock detection switch (in driver's door) Ecu-acc fuse 7.5a Ecu-b fuse 7.5a Ecu-ig fuse 7.5a F10 F11 Fusible link block (left side of engine compt) Gnd Gnd1 Gnd2 H13 Hot at all times Hot in acc or on Hot in on or start Ii (at left kick panel) Instrument panel j/b (left side of dash) J/b 3 (left side of dash) J/b 3 (left side os dash) J18 J28 J29 J32 J33 Junction connector (center of dash) Junction connector (left kick panel) Junction connector 28 & 29 (left kick panel) Junction connector 32 & 33 (right passenger's door) Junction connector 34 (left rear cargo area) Junction connector 5 (left front of engine compt, behind headlight) Junction connector 61 (left rear cargo area) K10 K13 Keyless buzzer (left side of engine compt) Ksw Kul Left front power window motor (in left front door) Left rear power window control switch Left rear power window motor (in left rear door) Lh rr door fuse 20a Lssr Lsw Mpx1 Mpx2 Mpx4 Mpx5 Mpx6 Pct Pct1 Pls Pls1 Pls2 Pnk Power window master switch Prg Pwr fuse 30a Pws Rda Red Rh rr door fuse 20a Right front door lock control switch Right front power window control switch Right front power window motor (in right front door) Right rear power window control switch Right rear power window motor (in right rear door) Sel1 Sel2 Sgnd Sig Ssrb Unlock warning switch (under left side of dash) Vcc
RADIO Radio Wiring Diagram, with Mark Levinson (1 of 3) for Lexus RX 400h 2008 List of elements for Radio Wiring Diagram, with Mark Levinson (1 of 3) for Lexus RX 400h 2008: 79 (center of Acan Acc Adim Amp fuse 30a Ant Antenna Antenna amplifier (center of dash) Atx+ Atx- Au1 Au2 Body ecu (behind left side of dash) Cdl+ Cdl- Cdr+ Cdr- Combination switch Csld Dash) Eau F12 Fusible link block (left side of engine compt) Gateway ecu (right side of dash) Gnd Gtx+ Gtx- Hot at all times Hot in acc or on Illum Instrument panel j/b (left side of dash) Interior lights system Ivo+ Ivo- J/c 11 (behind left side of dash) J/c 14 & 15 (center of dash) J/c 38 (at rear cargo area) J/c 39 (at rear cargo area) J14 J15 Main antenna Mode Multi-display (w/ navigation) Mute Nca Ntsc O10 Pnk R31 R32 Radio & player Radio 1 fuse 15a Radio 2 fuse 7.5a Red Seek+ Seek- Sgnd Sld Steering pad switch Sub antenna Sw1 Sw2 Swg Tx+ Tx- Tx1+ Tx1- Tx2+ Tx2- Tx4+ Tx4- Va- Vol+ Vol- Vv+ Vv- W/ navigation W/ rear seat entertainment W/o navigation Radio Wiring Diagram, with Mark Levinson (2 of 3) for Lexus RX 400h 2008 List of elements for Radio Wiring Diagram, with Mark Levinson (2 of 3) for Lexus RX 400h 2008: 35 Acc Adpg Crt fuse 7.5a Fusible link block (left side of engine compt) Gnd Hot at all times J/b 3 (left side of dash) J/c 14 (center of dash) J/c 38 (at rear cargo area) J/c 42 (at rear cargo area) J19 L1+ Mute Nca Ntsc Pnk R1+ Rear seat entertainment display (if equipped) Red Right front squawker Right tweeter Sgn1 Sgn2 Sgnd Sld Sld9 Twr+ Twr- Tx+ Tx- Val+ Var+ Video terminal Vv+ Vv- Radio Wiring Diagram, with Mark Levinson (3 of 3) for Lexus RX 400h 2008 List of elements for Radio Wiring Diagram, with Mark Levinson (3 of 3) for Lexus RX 400h 2008: 51 Acc Anti-lock brakes system Center speaker Ch1+ Ch1- Ch2+ Ch2- Ch3+ Ch3- Ch4+ Ch4- Ch5+ Ch5- Ch6+ Ch6- Ch7+ Ch7- Combination meter G10 G12 Gauge 2 fuse 7.5a Gnd Hot in on or start Ig2+ Ik (top left side of dash) Instrument panel j/b (left side of dash) Left front squawker Left front woofer Left rear door speaker Left tweeter Micro computer Mute Nca Pnk Red Right front woofer Right rear door speaker S27 S28 S50 S51 Sld Spd Speedometer Ss11+ Ss11- Stereo component amplifier (center rear of vehicle) Twl+ Twl- Tx+ Tx- Radio Wiring Diagram, without Mark Levinson (1 of 3) for Lexus RX 400h 2008 List of elements for Radio Wiring Diagram, without Mark Levinson (1 of 3) for Lexus RX 400h 2008: 75 (center of Acan Acc Adim Amp fuse 30a Ant Antenna Antenna amplifier (center of dash) Atx+ Atx- Au1 Au2 Body ecu (behind left side of dash) Cdl+ Cdl- Cdr+ Cdr- Combination switch Csld Dash) Eau F12 Fusible link block (left side of engine compt) Gateway ecu (right side of dash) Gnd Gtx+ Gtx- Hot at all times Hot in acc or on Illum Instrument panel j/b (left side of dash) Interior lights system Ivo+ Ivo- J/c 11 (behind left side of dash) J/c 14 & 15 (center of dash) J/c 38 (at rear cargo area) J/c 39 (at rear cargo area) J14 J15 Main antenna Mode Multi-display (w/ navigation) Mute Nca O10 Pnk Radio & player Radio 1 fuse 15a Radio 2 fuse 7.5a Red Seek+ Seek- Sgnd Sld Steering pad switch Sub antenna Sw1 Sw2 Swg Tx+ Tx- Tx1+ Tx1- Tx2+ Tx2- Tx4+ Tx4- Vol+ Vol- Vv+ Vv- W/ navigation system W/ rear seat entertainment system W/o navigation system Radio Wiring Diagram, without Mark Levinson (2 of 3) for Lexus RX 400h 2008 List of elements for Radio Wiring Diagram, without Mark Levinson (2 of 3) for Lexus RX 400h 2008: 35 Acc Adpg Crt fuse 7.5a Fusible link block (left side of engine compt) Gnd Hot at all times J/b 3 (left side of dash) J/c 14 (center of dash) J/c 38 (at rear cargo area) J/c 42 (at rear cargo area) J19 L1+ Mute Nca Ntsc Pnk R1+ Rear seat entertainment display (if equipped) Red Right front squawker Right tweeter Sgn1 Sgn2 Sgnd Sld Sld9 Twr+ Twr- Tx+ Tx- Val+ Var+ Video terminal Vv+ Vv- Radio Wiring Diagram, without Mark Levinson (3 of 3) for Lexus RX 400h 2008 List of elements for Radio Wiring Diagram, without Mark Levinson (3 of 3) for Lexus RX 400h 2008: 48 Acc Anti-lock brakes system Combination meter Fl+ Fl- Fr+ Fr- G10 G12 Gauge 2 fuse 7.5a Gnd Hot in on or start Ig2+ Ii1+ Ii1- Ik (top left side of dash) Instrument panel j/b (left side of dash) Left front squawker Left front woofer Left rear door speaker Left tweeter Micro computer Mute Nca Pnk Red Right front woofer Right rear door speaker Rl+ Rl- Rr+ Rr- S29 S30 S50 S51 Sld Spd Speedometer Stereo component amplifier (center rear of vehicle) Twl+ Twl- Tx+ Tx- Wfl+ Wfl- Wfr+ Wfr-
SHIFT INTERLOCK Shift Interlock Wiring Diagram for Lexus RX 400h 2008 List of elements for Shift Interlock Wiring Diagram for Lexus RX 400h 2008: 45 (at left kick panel) ii (left top of dash) ij +b1 10a 7.5a A10 A14 A16 A20 Acc Canh Canl Computer data lines system Ecu-acc fuse Ecu-ig 1 fuse F10 F11 F12 H30 H31 H34 Hot at all times Hot in acc or on Hot in on or start Hybrid vehicle control ecu (right side of dash) Igct 2 fuse Instrument panel j/b (left side of dash) J/b 3 (left side of dash) J/b 4 (right side of dash) Junction connector j10 (behind left side of dash) Junction connector j13 (center of dash) Junction connector j7 & j8 (behind left side of dash) Key interlock solenoid (left side of dash) Kls(+) P detection switch R/b 3 (left side of engine compt) Red Shift lever position sensor (park/neutral position switch) (left front of engine compt) Shift lock ecu (under center console, beside shift lever) Shift lock solenoid Sls(+) Sls(-) Stop fuse Stop light switch Stp
SUPPLEMENTAL RESTRAINTS Supplemental Restraints Wiring Diagram (1 of 2) for Lexus RX 400h 2008 List of elements for Supplemental Restraints Wiring Diagram (1 of 2) for Lexus RX 400h 2008: 97 (right side of dash) hybrid vehicle control ecu (right side of dash) skid control ecu +sl +sr -sl -sr A20 A21 A22 Abfs Air Air bag sensor assembly (below center console) Aron Body ecu Center cluster integration panel Combination meter Computer data lines system Csl+ Csl- Csr+ Csr- Curtain shield air bag squib (left) (left rear of vehicle) D2+ D2- Dk+ Dk- Drive ic E10 Escl Escr Esl Esr F10 Fsr+ Fsr- G10 G12 Gauge 2 fuse 7.5a Gnd Gsw Gsw2 H10 H29 Hot in on or start Ic bean Icl+ Icl- Icr+ Icr- Ig2 Ig2+ Ign fuse 10a Ii (at left kick panel) Ik (top left side of dash) Instrument panel j/b (left side of dash) Knee air bag squib Lbe+ Lbe- Lsp+ Lsp- M14 Micro computer Mpx1 Mpx2 Multi display P-ab P2+ P2- Paon Pl+ Pl- Pr+ Pr- Pretensioner (left) (in base of left "b" pillar) Red S39 Seat position airbag sensor & buckle switch (driver's side) (buckle switch: on left seat belt buckle) (seat position airbag sensor: under driver's seat) Sfl+ Sfl- Sfr+ Sfr- Side air bag sensor (left front) (at left "b" pillar) Side air bag sensor (left rear) (at base of left "c" pillar) Side air bag squib (left) (in driver's seat back) Sil Sp1 Srs ind Ssl+ Ssl- Ssr+ Ssr- Vucl Vucr Vupl Vupr W/ lexus navigation system W/o lexus navigation system Supplemental Restraints Wiring Diagram (2 of 2) for Lexus RX 400h 2008 List of elements for Supplemental Restraints Wiring Diagram (2 of 2) for Lexus RX 400h 2008: 55 (at rear of cargo area) junction connector 42 (in left front corner of engine compt) (in right front corner of engine compt) (in steering column) air bag squib (steering wheel pad) (right side of dash) air bag squib (front passenger air bag assembly) +sl +sr -sl -sr A13 A23 A24 Air bag sensor (left front) Air bag sensor (right front) Bgnd Bsw Buckle switch (front passenger's side) (in seat belt buckle) Curtain shield air bag squib (right) (right rear of vehicle) D10 Data link connector 3 (under left side of dash) Dia E14 Ecu-b 1 fuse 7.5a Fsr+ Fsr- Fusible link block (left side of engine compt) Gnd Hot at all times Instrument panel j/b (left side of dash) J/b 3 (left side of dash) J/b 4 (right side of dash) Junction connector 37 (at rear cargo area) Occupant classification ecu (at right front seat) Occupant classification sensor (left front) (in left side of front passenger seat) Occupant classification sensor (left rear) (left rear of front passenger's seat) Occupant classification sensor (right front) (in right side of front passenger seat) Occupant classification sensor (right rear) (in right rear of passenger's seat) Pretensioner (right) (in base of left "b" pillar) Red Sgd1 Sgd2 Sgd3 Sgd4 Side air bag sensor (right front) (at base of right "b" pillar) Side air bag sensor (right rear) (at base of right "c" pillar) Side air bag squib (right) (in front passenger's seat back) Sig1 Sig2 Sig3 Sig4 Spiral cable Svc1 Svc2 Svc3 Svc4
TRANSMISSION Transmission Wiring Diagram (1 of 3) for Lexus RX 400h 2008 List of elements for Transmission Wiring Diagram (1 of 3) for Lexus RX 400h 2008: 69 (behind left side of dash) j/c 10 (front of engine) ed +b1 +b2 +bm Batt Canh Canl Clk+ Clk- Computer data lines system Dc/dc-s fuse 10a E01 E02 E03 E04 E05 E12 Ed (front of engine) Ee (rear of engine) Engine room r/b (on left side of engine compt) Eom Etcs fuse 10a Fusible link block (left side of engine compt) Gmt Gmtg H29 H30 H31 H32 H33 H34 Hot at all times Hot in on or start Hsdn Htm+ Htm- Hybrid vehicle control ecu (right side of dash) Igct 1 fuse 50a Igct 2 fuse 10a Igct 5 fuse 10a Igct relay Ign fuse 10a Igsw Ij (left top of dash) Instru- ment panel j/b (left side of dash) J/c 13 (center of dash) J/c 17 (right side of dash) J/c 6 (behind left side of dash) Me01 Mmt Mmtg Mrel Mth+ Mth- Neo Nodd Pmet R/b 3 (left side of engine compt) R/b 4 (left side of engine compt) Red Req+ Req- Rmt Rmtg Shift lever position sensor (park/neutral position switch) (left front of engine compt) Spdi St fuse 7.5a St2 Transmission Wiring Diagram (2 of 3) for Lexus RX 400h 2008 List of elements for Transmission Wiring Diagram (2 of 3) for Lexus RX 400h 2008: 86 (left rear luggage compt) rear motor generator +b(dome) +b2 Bean ic Buzzer Clk+ Clk- Combination meter Computer data lines system Drive ic Drn1 Drn2 Drn3 Drn4 Drn7 Drn8 Drn9 Front inverter G10 Gfiv Ginv Git Giva Givb Giwa Giwb Gnd mg Gsdn Guu Gvu Gwu H10 Hsdn Htm+ Htm- Hwt Hwtg I21 Ig2+ Ik (top left side of dash) Instrument panel j/b (left side of dash) Inverter (left side of engine compt) J/b 3 (left side of dash) Lcd (multi display) M11 M17 M18 Malfunction ind lamp Master warning ind Mfiv Micro computer Mit Miva Mivb Miwa Miwb Motor generator control computer Msdn Mth+ Mth- Muu Mvu Mwu Nca Nei Nodd Ovhi Ovlmo Power Rcs Rcsg Ready ind Red Req+ Req- Rmt Rmtg Rrf Rrfg Rsn Rsng S39 Skid control ecu (right side of dash) Sp1 Speedometer Water temp sensor Transmission Wiring Diagram (3 of 3) for Lexus RX 400h 2008 List of elements for Transmission Wiring Diagram (3 of 3) for Lexus RX 400h 2008: 59 +bc Converter Cpwm Csdn D13 Dc/dc converter Dome fuse 7.5a Drn5 Drn6 F16 Fcv Front motor Front motor generator 1 (left side of engine compt) Fusible link block (left side of engine compt) G12 Gauge 2 fuse 7.5a Gcnv Gcs Gcsg Generator 2 (left side of engine compt) Gmt Gmtg Gndc Grf Grfg Gsn Gsng Hot at all times Hot in on or start I22 Idh Instrument panel j/b (left side of dash) Inverter (left side of engine compt) J/b 3 (left side of dash) M14 M15 Mcs Mcsg Mmt Mmtg Motor generator control computer Mrf Mrfg Msn Msng Nca Noddi Ovhco Ovl Rear current sensor Red Riva Rivb Riwa Riwb Rsg Rvsno Rvspo Vlo
TRUNK, TAILGATE, FUEL DOOR Fuel Door Release Wiring Diagram for Lexus RX 400h 2008 List of elements for Fuel Door Release Wiring Diagram for Lexus RX 400h 2008: 33 (left rear of cargo area) bo (left top of dash) ij (top left side of dash) ik Combination meter D13 Dome fuse 7.5a F16 Fuel Fuel lid courtesy switch (at fuel door) Fuel lid opener motor (right rear of cargo area) Fuel lid opener switch Fuel opn fuse 7.5a Fuo Fusible link block (left side of engine compartment) G10 G12 Gauge 2 fuse 7.5a H29 H30 Hot at all times Hot in on or start Hybrid vehicle control ecu (right side of dash) Instrument panel j/b (left side of dash) J/b 3 (left side of dash) Junction connector 13 (center of dash) Junction connector 35 (left rear cargo area) Lcd (multi display) Lidc Lst1 Lst2 Micro computer Pnk Red Liftgate Release Wiring Diagram for Lexus RX 400h 2008 List of elements for Liftgate Release Wiring Diagram for Lexus RX 400h 2008: 28 Acc Altb Back door lock assembly (in center of tailgate) Back door opener switch (in tailgate assembly) Batb Bdsu Becu Body ecu (behind left side of dash) D10 D16 Door 1 fuse 25a Door 2 fuse 25a Ecu-acc fuse 7.5a Ecu-b 1 fuse 7.5a Ecu-ig 1 fuse 7.5a F10 Fusible link block (left side of engine compt) Gnd1 Gnd2 Hot at all times Hot in acc or on Hot in on or start Ii (at left kick panel) Ij (left top of dash) Instrument panel j/b (left side of dash) J/c 13 (center of dash) J/c 36 (at rear cargo area) Tr+ Tailgate Closing Assist Wiring Diagram for Lexus RX 400h 2008 List of elements for Tailgate Closing Assist Wiring Diagram for Lexus RX 400h 2008: 86 "d" pillar) (behind left side of dash) body ecu (center of left "d" pillar) power back door ecu (right side of dash) j/b 4 Acc Altb B13 Back door lock assembly (in center of tailgate) Back door opener switch (in tailgate assembly) Batb Bcty Bd+ Bd- Bddn Bdsu Becu Bq (behind left side of rear bumper) Buzzer Bzr+ Bzr- C11 C12 Cl+ Cl- Computer data lines system Courtesy switch Ctye Ctyo D10 D16 Dc+ Dc- Door 1 fuse 25a Door 2 fuse 25a Ds1 Ds2 Dsg Dsv Ecu-acc fuse 7.5a Ecu-b 1 fuse 7.5a Ecu-ig 1 fuse 7.5a Ecub F10 Ful Full latch switch Fusible link block (left side of engine compartment) Gnd Gnd2 Haf Hot at all times Hot in acc or on Hot in on or start Ij (left top of dash) Instrument panel j/b (left side of dash) J/b 3 (left side of dash) J/c 13 (center of dash) J/c 30 (left rear cargo area) J/c 36 (at rear cargo area) J/c 40 (at rear cargo area) J/c 41 (at rear cargo area) J13 Left power back door touch sensor (top left osle Mpx1 Mpx2 Mse Msw Neutral switch Ose Osl Osr Osre P13 P14 Pbd fuse 30a Pbds Pnk Pos Power back door closer switch Power back door drive unit (right side of dash) Power back door off switch Power back door opener/ closer switch Power back door warning buzzer (at right rear taillight) Rear j/b (left rear side of cargo area) Red Right power back door touch sensor (top right "d" pillar) Secondary latch switch
WARNING SYSTEMS Key Reminder & Seat Belt Warning Wiring Diagram for Lexus RX 400h 2008 List of elements for Key Reminder & Seat Belt Warning Wiring Diagram for Lexus RX 400h 2008: 91 (at left kick panel) ii (dome) (left side of dash) instrument panel j/b (left side of dash) j/b 3 (top left side of dash) ik (w/ navigation) (w/o navigation) +b1 A14 A20 A21 A22 Acc Air bag sensor assembly (below center console) Altb Batb Bean ic Becu Bgnd Body ecu (behind left side of dash) Bsw Buckle switch (driver's side) (on left seat belt buckle) Buckle switch (front passenger's side) (in seat belt buckle) Buzzer Center cluster integration panel (w/o navigation) Circuit pwr sply Combination meter Computer data lines system Crt fuse 7.5a D10 D13 D16 Dcty Dome fuse 7.5a Door 1 fuse 25a Door 2 fuse 25a Drive ic Driver's door ind Driver's seat belt ind Ecu- acc fuse 7.5a Ecu-b 1 fuse 7.5a F10 F12 F14 F16 Front passenger seat belt warning light Fsr+ Fsr- Fusible link block (left side of engine compt) G10 G12 Gauge 1 fuse 7.5a Gauge 2 fuse 7.5a Gnd Gnd1 Gnd2 Hot at all times Hot in on or acc Hot in on or start Ig+ Ig2+ Ij (left top of dash) Il (center of dash) Instrument panel j/b (left side of dash) J/b 3 (left side of dash) J/c j13 (center of dash) J/c j14 & j15 (center of dash) J14 J15 Ksw Lbe+ Lbe- Left front door courtesy switch (at left "b" pillar) Micro computer Mpx+ Mpx- Mpx1 Mpx2 Multi display Occupant classification ecu (at right front seat) Pbew Radio fuse 7.5a Red S39 Skid control ecu (right side of dash) Sp1 Speedo- meter Unlock warning switch (under left side of dash) W/ navigation W/o navigation Warning light seat belt passenger front Tire Pressure Monitoring Wiring Diagram for Lexus RX 400h 2008 List of elements for Tire Pressure Monitoring Wiring Diagram for Lexus RX 400h 2008: 39 (left side of dash) j/b 3 (top left side of dash) ik +5v A16 Bean ic Cl-sw Combination meter Computer data lines system Driver ic E10 E20 Ecu-ig 1 fuse 7.5a F10 F11 G10 G12 Gauge 2 fuse 7.5a Gnd Gnd2 Hot in on or start Id-sw Ig2+ Ij (left top of dash) Instrument panel j/b (left side of dash) J/b 4 (right side of dash) J/b j13 (center of dash) Micro computer Mpx1 Mpx2 Pnk Pwr sply circuit Rda Red Rf5v Tire pressure ind Tire pressure warning antenna & receiver (rear center of roof) Tire pressure warning ecu (behind right side of dash) Tire pressure warning reset switch Tire pressure warning select switch
WIPER/WASHER Front Wiper/Washer Wiring Diagram, with Auto Wiper System for Lexus RX 400h 2008 List of elements for Front Wiper/Washer Wiring Diagram, with Auto Wiper System for Lexus RX 400h 2008: 56 +sm A28 A29 Auto Auto wiper ecu (top right side of dash) Becu Body ecu C11 C12 Combination meter Combination switch Computer data lines system D10 Ecu-b 1 fuse 7.5a Ecu-ig 1 fuse 7.5a F10 F19 Fr wip fuse 30a Front washer motor (behind right front headlight) Front wiper motor (on left side of firewall) Fusible link block (left side of engine compartment) Fwas G12 Gauge 2 fuse 7.5a Gnd2 High Hot at all times Hot in on or start Ij (left top of dash) Im (at right kick panel) Instrument panel j/b (left side of dash) J/b 3 (left side of dash) J/b 4 (right side of dash) J18 J19 Junction connector 13 (center of dash) Junction connector 18 & 19 (right side of dash) Junction connector 5 (left front of engine compartment, behind headlight) Low Mist Mpx Mpx1 Mpx2 Off Pnk R10 Rain sensor (center front of roof, at windshield) Red Sig Vr1 Vr2 Washer fuse 20a Washer level warning switch (in right front corner of engine compt) Washer switch Wig Wiper switch Front Wiper/Washer Wiring Diagram, without Auto Wiper System for Lexus RX 400h 2008 List of elements for Front Wiper/Washer Wiring Diagram, without Auto Wiper System for Lexus RX 400h 2008: 32 (right side of dash) j/b 4 C11 C12 Combination meter Combination switch F10 F19 Fr wip fuse 30a Front washer motor (behind right front headlight) Front wiper motor (on left side of firewall) G12 Gauge 2 fuse 7.5a High Hot in on or start Ij (left top of dash) Instrument panel j/b (left side of dash) Int J/c 13 (center of dash) J/c 18 & 19 (right side of dash) J/c 5 (left front of engine compt, behind headlight) J18 J19 Junction connector 13 (center of dash) Low Mist Off Red Solid state Washer fuse 20a Washer level warning switch (in right front corner of engine compt) Washer switch Wiper switch Headlamp Washer Wiring Diagram for Lexus RX 400h 2008 List of elements for Headlamp Washer Wiring Diagram for Lexus RX 400h 2008: 41 Body ecu C10 C12 Combination switch Drl 4 relay Ecu-ig 2 fuse 10a F19 Frwa Fusible link block (left side of engine compartment) H-lp cln fuse 30a H-lp l lwr relay H-lp r lwr relay H13 Hdlo Head Headlight cleaner control relay (below right headlight assembly) Headlight cleaner motor (below right front headlight) Headlight cleaner switch Headlights system Hot at all times Hot in on or start Hrly Ii (at left kick panel) Ij (left top of dash) Instrument panel j/b (left side of dash) J/b 2 (left side of engine compartment) J/b 3 (left side of dash) J18 J19 Junction connector 13 (center of dash) Junction connector 18 & 19 (right side of dash) Junction connector 2 (in right front of engine compt, behind headlight) Junction connector 7 & 8 (behind left side of dash) Junction connector 9 (behind left side of dash) Main fuse 40a Mode monitor terminal Off Pnk Red Solid state Tail Rear Wiper/Washer Wiring Diagram for Lexus RX 400h 2008 List of elements for Rear Wiper/Washer Wiring Diagram for Lexus RX 400h 2008: 20 (left top of dash) ij C11 C12 Combination switch Diode (rear wiper) (under left side of dash) Hot in on or start Instrument panel j/b (left side of dash) Int J/b 3 (left side of dash) Junction connector 13 (center of dash) Off Rear washer motor (right front of engine compt) Rear wiper & washer switch Rear wiper motor Rear wiper motor & relay (in center of liftgate) Rear wiper relay Rr wip fuse 15a Wash Washer Washer fuse 20a
