Diagram sections — 33 (105 total)
AIR CONDITIONING ANTI-LOCK BRAKES ANTI-THEFT BODY CONTROL MODULES COMPUTER DATA LINES COOLING FAN CRUISE CONTROL DEFOGGERS ELECTRONIC POWER STEERING ENGINE ACCESSORIES ENGINE PERFORMANCE EXTERIOR LIGHTS GROUND DISTRIBUTION HEADLIGHTS HORN INSTRUMENT CLUSTER INTERIOR LIGHTS MEMORY SYSTEMS NAVIGATION POWER DISTRIBUTION POWER DOOR LOCKS POWER MIRRORS POWER SEATS POWER TOP/SUNROOF POWER WINDOWS RADIO SHIFT INTERLOCK STARTING/CHARGING SUPPLEMENTAL RESTRAINTS TRANSMISSION TRUNK, TAILGATE, FUEL DOOR WARNING SYSTEMS WIPER/WASHER
AIR CONDITIONING Automatic A/C Wiring Diagram (1 of 2) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Automatic A/C Wiring Diagram (1 of 2) for Mercedes-Benz CLA250 4Matic 2014: 54 (+) (behind left side of front bumper) outside temperature sensor (not used) (right rear of engine compt) coolant circulation pump (under left front of center console) 30g 34kd Ac housing Air quality sensor (right rear of engine compt) Air recir- culation mode button Automatic air conditioning control & operating unit Bf-sig Blower motor Blower regulator Can-b h Can-b l Central air distribution position detection microswitch (comfort) (bottom right side of hvac unit) Computer data lines system Defogger system Evaporator temperature sensor (lower left side of evaporator) F-sig Front electrical prefuse box (left side of engine compt) Fuse 10a Fuse 150a Fuse 40a Fuse 7.5a Fuse 80a Gnd Hot at all times Hot w/ circuit 30g relay energized In-b8 Interior temperature sensor (comfort) (left center of dash) Lin b8 Mk (+) Mot Nca Rear window heater button Red Refrigerant compressor (lower left front of engine) Refrigerant pressure sensor (right front of engine compt) Rv (+) Rv (-) S-sig S29 Sig Sun sensor (comfort) (top center front of dash) Vehicle interior fuse box (right front footwell) W/ magnetic clutch W/o magnetic clutch W12 W15/1 (right front footwell) W3/1 (right front wheelwell) X25/14-c1 X26-c1 Automatic A/C Wiring Diagram (2 of 2) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Automatic A/C Wiring Diagram (2 of 2) for Mercedes-Benz CLA250 4Matic 2014: 41 (+) (behind radiator) fan motor (center of hvac unit) (if equipped) ptc heater booster (left end of dash) sam control unit Activated charcoal filter shutoff valve (right of fuel tank) Can-i h Can-i l Central air distribution actuator motor (upper right side of hvac unit) Computer data lines system Coolant pump switchover valve (right side of engine) Coolant temperature sensor (right side of engine) Coolant thermostat heating element (right side of engine) Engine compartment fuse & relay module (left side engine compt) Engine controls system Fresh air/ air recirculation flap actuator motor (top left side of hvac blower housing) Fuse 15a Fuse 5a Gnd Hot w/ circuit 30g relay energized Hot w/ circuit 87m relay energized Humidity/ temperature sensor Interior temperature sensor w/ integrated fan Left blending air flap actuator (comfort) (left side of hvac unit) Lin b13 Me-sfi (me) control module (left front of engine compt) Overhead control panel control unit Purge control valve (right rear of engine) Pwm Red Right blending air flap actuator (right side of hvac unit) Sig Uh1 Vehicle interior humidity & temperature sensor (in overhead console) W/ fan motor 300w & 400w W/ fan motor 600w & 850w W11 (left rear of engine compt) W15/7 W78 (center front of roof) W9 (under left headlight assembly) X25/13-c2 X36/2-c1
ANTI-LOCK BRAKES Anti-lock Brakes Wiring Diagram (1 of 2) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Anti-lock Brakes Wiring Diagram (1 of 2) for Mercedes-Benz CLA250 4Matic 2014: 31 (left front footwell) w15/2 12v + 30g 5v + Abs ind Bls h Bls l Brake system warning lamp ind Can e h Can e l Computer data lines system Electronic stability program control unit (left front of engine compt) Engine compartment fuse & relay module (left side engine compt) Esp warning lamp ind Espa/asr off warning lamp ind Fehlende informationen Fuse 10a Fuse 25a Fuse 40a Fuse 5a Gnd Hot at all times Hot w/ circuit 15 relay energized Hot w/ circuit 30g relay energized Instrument cluster Parking brake ind S12 Sig Stop lamp switch (top of brake pedal assembly) Vehicle interior fuse box (right front footwell) W70 (left front wheelwell) Anti-lock Brakes Wiring Diagram (2 of 2) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Anti-lock Brakes Wiring Diagram (2 of 2) for Mercedes-Benz CLA250 4Matic 2014: 25 (under left front of center console) w12 30g Brake fluid level switch (on brake fluid reservoir) Can e1 h Can e1 l Computer data lines system Fuse 5a Hot w/ circuit 30g relay energized Left front axle rpm sensor (on left front wheel assembly) Left rear axle rpm sensor (on left rear wheel assembly) Nca Red Right front axle rpm sensor (on right front wheel assembly) Right front brake wear sensor (on right front brake caliper assembly) Right rear axle rpm sensor (on right rear wheel assembly) Sam control unit (left end of dash) Steering column module control unit (top of steering column) Steering wheel angle sensor (part of steering column module) Uh1 Uh2 Vehicle interior fuse box (right front footwell) W3/1 (right front wheelwell) X25/13-c1 X25/14-c1 X88/12-c1
ANTI-THEFT Anti-theft Wiring Diagram (1 of 3) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Anti-theft Wiring Diagram (1 of 3) for Mercedes-Benz CLA250 4Matic 2014: 35 (+) (-) 58d Ata (edw) function ind Can-b h Can-b l Central locking motor Computer data lines system Data Driver door infrared remote control receiver Driver side power window & outside mirror adjustment switch Electronic ignition switch control/unit (left center of dash) Ft df Fuse 30a Gnd Hot at all times Left front door control unit Left front door lock Left rear door lock Lin b5 Mot Pnk Rear side window child safety lock switch Right rear door lock Rotary tumbler switch Sig Upper control panel control unit Vehicle interior fuse box (right front footwell) W15/1 (right front footwell) W15/2 (left front footwell) X157/7-c2 X35/1-c1 X35/1-c2 X35/3-c1 X35/4-c1 Anti-theft Wiring Diagram (2 of 3) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Anti-theft Wiring Diagram (2 of 3) for Mercedes-Benz CLA250 4Matic 2014: 28 (+) (center front of roof) w78 58d Anti-theft alarm system/emergency call system button group (if equipped) Automatic rear end door Computer data lines system Engine compartment fuse & relay module (left side engine compt) Fuse 10a Fuse 40a Gnd Horns system Hot at all times Left front door central locking interior switch Lift gate locking pawl switch Lin b 13 Overhead control panel control unit Pw2 Red Rotary tumbler switch S13 Sam control unit (left end of dash) Sig Trunk lid/liftgate central locking motor Trunk lid/liftgate control control unit Uh2 Vehicle interior fuse box (right front footwell) W3/2 (left rear of engine compt) W6 (left side of luggage compt) Anti-theft Wiring Diagram (3 of 3) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Anti-theft Wiring Diagram (3 of 3) for Mercedes-Benz CLA250 4Matic 2014: 42 (+) (-) (under left front of center console) w12 Ata (edw)/towing sensor/interior motion sensor control unit (in overhead control panel) Can b h Can b l Can-b h Can-b l Can-c h Can-c l Can-e h Can-e l Central locking motor Computer data Computer data lines system Dual clutch fully integrated transmission control controller unit (in transmission) Electronic ignition switch control unit (left center of dash) Fuse 10a Fuse 30a Fuse 5a Gnd Hot at all times Instrument cluster Left front door exit & warning lamp (w/ exterior lights package) Left front door handle illumination (w/ exterior lights package) Lines system Rear window glass breakage sensor (w/ interior protection) Red Right front door central locking interior switch Right front door control unit Right front door exit & warning lamp (w/ exterior lights package) Right front door handle illumination (w/ exterior lights package) Right front door lock Rotary tumbler switch Sig Vehicle interior fuse box (right front footwell) W15/1 (right front footwell) W78 (center front of roof) W8/4 X157/6-c2 X35/2-c1 Zv-mot +
BODY CONTROL MODULES Body Control Modules Wiring Diagram (1 of 2) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Body Control Modules Wiring Diagram (1 of 2) for Mercedes-Benz CLA250 4Matic 2014: 55 (+) (+) bu (+) ye 30b 30g 58d Bl l Bl r Blsl l C sig Can-b h Can-b l Computer data lines system Door locks & interior lights systems Door locks system Exterior lights & headlights systems Exterior lights system F34ka F34kb F34kc F34ke F34kf Fuse 10a Fuse 5a Gnd Hot at all times Hot w/ circuit 30g relay energized Instrument cluster system Interior lights system Interior lights system interior lights & power windows systems K114 Lin b12 Lin b13 Memory systems Mot Nsl Power distribution system Power windows system Power windows systems Red Rfl l Rfl r S sig Sam control unit (left end of dash) Sig Slsml l Slsml r Starting/charging system Tfh o Tfh s Trunk, tailgate, fuel doors & door locks systems Trunk, tailgate, fuel doors & interior lights systems Trunk, tailgate, fuel doors system Vehicle interior fuse box (right front footwell) Wiper/washer system Body Control Modules Wiring Diagram (2 of 2) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Body Control Modules Wiring Diagram (2 of 2) for Mercedes-Benz CLA250 4Matic 2014: 60 (+) 30 ab 30 fh 30 ib sra 30 zv 30l 58d Air conditioning system exterior lights & headlights systems Anti-lock brakes system Anti-theft system Engine compartment fuse & relay module (left side engine compt) Engine controls system Exterior lights & headlights systems Exterior lights system F32k1 F58kj F58kk F58kl F58kr Fl l Fra l Fra r Front electrical prefuse box (left side of engine compt) Fuse 30a Fuse 40a Gnd Headlights system Headlights, exterior lights & interior lights systems Horns system Hot at all times Instrument cluster system Interior lights system Lin 1 Lin b15 Mot Pltfl l Pltfl r Power distribution system Pw1 Pw2 Red S13 S27 S28 Sam control unit (left end of dash) Sig Sig 1 Sig 2 Sig 3 Starting/charging system Uh1 Uh2 Upltfl l Upltfl r Vehicle interior fuse box (right front footwell) W15/1 (right front footwell) W3/2 (left rear of engine compt) Wiper/washer system Wmv pp Wsa
COMPUTER DATA LINES Data Link Connector Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Data Link Connector Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 16 (left front footwell) w15/2 Can d h Can d l Comand control unit (w/o audio 20) radio (w/ audio 20) Diagnostic connector (under left side of dash) Electronic ignition switch control unit (left center of dash) Emergency call system control unit (under center of hat shelf) Eth (+) Eth (-) Eth ws Fuse 10a Hot at all times Pnk Red Telematics services communication module Vehicle interior fuse box (right front footwell) High/Low Bus Wiring Diagram (1 of 3) for Mercedes-Benz CLA250 4Matic 2014 List of elements for High/Low Bus Wiring Diagram (1 of 3) for Mercedes-Benz CLA250 4Matic 2014: 37 All-wheel drive control unit (if equipped) Audio/comand control panel Audio/comand display Backup camera (center of luggage compt lid) C1a Can-a h Can-a l Can-b h Can-b l Can-c h Can-c l Can-e h Can-e l Can-g h Can-g l Comand control unit (w/o audio 20) radio (w/o audio 20) Cradle for navigation module (if equipped) Drive kit control unit for iphone (if equipped) Drivetrain can (can c) potential distributor electrical connector Dual clutch transmission fully integrated transmission control controller unit (if equipped) (in transmission) Early production Electronic ignition switch control unit (left center of dash) Front end can (can g) potential distributor electrical connector Fuel pump control unit (behind right rear seat) Headlamp control unit (upper right footwell) Late production Left rear bumper intelligent radar sensor (w/ blind spot assist) (behind left rear end of rear bumper) Me-sfi (me) control unit (left front of engine compt) Multi-function camera (if equipped) (top center of windshield) Right rear bumper intelligent radar sensor (w/ blind spot assist) (behind right rear end of rear bumper) Telematics can (can a) potential distributor electrical connector W12 (under left front of center console) W15/1 (right front footwell) W15/2 (left front footwell) X1/61-c1 X138/1-c1 X172/2-c1 High/Low Bus Wiring Diagram (2 of 3) for Mercedes-Benz CLA250 4Matic 2014 List of elements for High/Low Bus Wiring Diagram (2 of 3) for Mercedes-Benz CLA250 4Matic 2014: 24 C10 C11 C12 C13 Can-e h Can-e l Chassis can (can e) potential distributor electrical connector Distronic electric controller unit (w/ distronic plus) collision prevention assist controller unit (w/o distronic plus) (w/ distronic plus: behind center of front grille) (w/o distronic plus: behind right side of front bumper) Electric parking brake control unit (center rear of luggage compt) Electrical power steering control unit (on steering rack assembly) Electronic stability program control unit (left front of engine compt) Instrument cluster Left front reversible emergency tensioning retractor (if equipped) (base of left front "b" pillar) Parking system control unit (if equipped) (under front of center console) Right front reversible emergency tensioning retractor (if equipped) (base of right front "b" pillar) Steering column module control unit (top of steering column) Tire pressure monitor control unit (if equipped) (under rear of vehicle) W/ distronic plus W/collision warning system & active park assist W/o collision warning system & active park assist W15/1 (right front footwell) X213/3-c1 X26/27-c2 X26/27-c3 High/Low Bus Wiring Diagram (3 of 3) for Mercedes-Benz CLA250 4Matic 2014 List of elements for High/Low Bus Wiring Diagram (3 of 3) for Mercedes-Benz CLA250 4Matic 2014: 31 Ata (edw)/ towing sensor/ liftgate interior motion sensor control unit (in overhead control panel) Automatic air conditioning control & operating unit C10 C11 C12 C13 Camera cover control unit (behind left rear seat) Can-b h Can-b l Comand control unit (w/o audio 20) radio (w/ audio 20) Drive kit control unit for iphone Driver seat control unit (under driver seat) Early production Front passenger seat control unit (under front passenger seat) Interior can (can b) potential distributor electrical connector Keyless-go control unit Late production Panoramic sliding roof control module (front center of roof) Right front door control unit (if equipped) Sam control unit (left end of dash) Stationary heater unit (if equipped) Trailer recognition control unit (if equipped) Trunk lid/ liftgate control unit W/ automatic rear end door W/ keyless-go W/ panaromic glass & top sliding sunroof W/o automatic rear end door W/o keyless-go W/o panaromic glass & top sliding sunroof W15/2 (left front footwell) X35/2-c2
COOLING FAN Cooling Fan Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Cooling Fan Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 44 (+) (behind radiator) fan motor 30g Activated charcoal filter shutoff valve (right of fuel tank) Automatic air conditioning control & operating unit Can-b h Can-b l Can-i h Can-i l Computer data lines system Coolant circulation pump (right rear of engine compt) Coolant pump switchover valve (right side of engine) Coolant temperature sensor (right side of engine) Coolant thermostat heating element (right side of engine) Engine compartment fuse & relay module (left side engine compt) Engine controls system Front electrical prefuse box (left side of engine compt) Fuse 15a Fuse 5a Fuse 7.5a Fuse 80a Gnd Hot at all times Hot w/ circuit 30g relay energized Hot w/ circuit 87m relay energized Interior temperature sensor w/ integrated fan Lin b13 Me-sfi (me) control module (left front of engine compt) Overhead control panel control unit Purge control valve (right rear of engine) Pwm Red Refrigerant pressure sensor (right front of engine compt) Sig Vehicle interior fuse box (right front footwell) W/ fan motor 300w & 400w W/ fan motor 600w & 850w W11 (left rear of engine compt) W12 (under left front of center console) W3/1 (right front wheelwell) W9 (under left headlight assembly) X25/13-c2 X25/14-c1 X36/2-c1
CRUISE CONTROL Cruise Control Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Cruise Control Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 52 +5v 12v 30g Accel/ set Accelerator pedal sensor (top of accelerator pedal assembly) Bls-h Bls-l Can e h Can e l Can-e h Can-e l Computer data lines system Cruise control lever Decel/ set Distronic control (if equipped) Distronic electronic controller unit (behind center of front grille) Distronic radar sensor Distronic warning lamp ind Electronic stability program control unit (left front of engine compt) Engine compartment fuse & relay module (left side engine compt) Fuse 5a Fuse 7.5a Gnd Hot w/ circuit 15 relay energized Hot w/ circuit 30g relay energized Ind Instrument cluster Left front axle rpm sensor (on left front wheel hub assembly) Left rear axle rpm sensor (on left rear wheel hub assembly) Me-sfi (me) control unit (left front of engine compt) Mot Nca Off Red Resume from memory Right front axle rpm sensor (on right front wheel hub assembly) Right rear axle rpm sensor (on right rear wheel hub assembly) S1 gnd S1 sig S2 gnd S2 sig Sig Steering column module control unit Stop lamp switch (top of brake pedal assembly) Throttle valve actuator (on throttle body) Vehicle interior fuse box (right front footwell) W11 (left rear of engine compt) W12 (under left front of center console) W3/1 (right front wheelwell) X213/3 X25/13 X25/14
DEFOGGERS Defoggers Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Defoggers Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 33 & operating unit (+) (-) 30g 34kd Automatic air conditioning control Can b h Can b l Computer data lines system Fuse 30a Fuse 40a Fuse 7.5a Gnd Heated rear window Heated rear window relay Hot at all times Hot w/ circuit 30g relay energized Left front door control module Left outside mirror Mirror heater Rear window heater button Rear window interference suppression capacitor (base of left "c" pillar) Red Right front door control module Right outside mirror S11 Vehicle interior fuse box (right front footwell) W12 (under left front of center console) W15/1 (right front footwell) W15/2 (left front footwell) W29/4 (base of right "c" pillar) X35/1-c1 X35/2-c1
ELECTRONIC POWER STEERING Electronic Power Steering Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Electronic Power Steering Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 16 (near left side of steering rack assembly) w3/7 Can b h Can b l Can e h Can e l Computer data lines system Electric power steering actuator motor Electric power steering torque sensor (on steering rack assembly) Electrical power steering control unit (on steering rack assembly) Front electrical prefuse box (left side of engine compt) Fuse 100a Gnd Hot at all times Instrument cluster Pas b Red Power Steering Column Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Power Steering Column Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 55 (+) (in steering wheel) driver air bag squib 1 (in steering wheel) driver air bag squib 2 30g 58d Accelerate & set switch Accept/terminate phone call button Back & voice control system off button Button + & - for setting specific functions & volume control Can-e h Can-e l Center horns button Combination switch Computer data lines system Cruise control lever Decelerate & set switch Direct select lever Distronic control (if equipped) Fuse 10a Fuse 5a Gnd Headlamp flasher/high beam switch liftgate windshield washer system switch Hot at all times Hot w/ circuit 30g relay energized Indicator switch Left fanfare horn system button Left multi-function steering wheel button group Low beam switch Mute button Off switch Ok button Pnk Red Reset and 'back' button Resume from memory switch Right fanfare horn system button Right multi-function steering wheel button group S18 Scroll forward/ back button Sig Steering column module control unit (top of steering column) Steering wheel angle sensor Steering wheel clock spring contact (part of steering column module) Steering wheel downshift button (if equipped) Steering wheel electronics (in steering wheel) Steering wheel upshift button (if equipped) Steering wheel vibration motor (in bottom steering wheel spoke) System selection button Turn signal lamp switch Vehicle interior fuse box (right front footwell) Voice control system on button W/ automatic lane detection W12 (under left front of center console) Windshield washer system switch Wipe switch
ENGINE ACCESSORIES Stationary Heater Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Stationary Heater Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 37 (+) (left end of dash) sam control unit (left front footwell) A tel Can b h Can b l Computer data lines system Coolant circulation pump (w/o comfort automatic air conditioning) (right rear of engine compt) Engine compartment fuse & relay module (left side engine compt) Fuse 20a Fuse 5a Hot at all times Lin 1 Mobile phone & stationary heater radio remote control antenna splitter Mobile phone contact plate Multi-function antenna Nca Red Shd Shd a sdar Sig Stationary heater button Stationary heater fuel pump Stationary heater radio remote control receiver Stationary heater switchover valve Stationary heater unit Upper control panel control unit Vehicle interior fuse box (right front footwell) W/ comfort telephony W/o comfort telephony W12 (under left front of center console) W15/2 W3/1 (right front wheelwell) W7 (right side of luggage compt) X25/14-c2 X36/2-c1 X39/37-c1
ENGINE PERFORMANCE
2.0L TURBO 2.0L Turbo, Engine Performance Wiring Diagram (1 of 7) for Mercedes-Benz CLA250 4Matic 2014 List of elements for 2.0L Turbo, Engine Performance Wiring Diagram (1 of 7) for Mercedes-Benz CLA250 4Matic 2014: 53 30g 58km 58kn 58ko 5v + 87m Accelerator pedal sensor (top of accelerator pedal assembly) Activated charcoal filter shutoff valve (right of fuel tank) Can c h Can c l Can e h Can e l Can i h Can i l Circuit 87m relay Computer data lines system Cooling fans system Engine compartment fuse & relay module (left side of engine compt) Fan motor (behind radiator) Fuel tank pressure sensor (in fuel tank) Fuse 10a Fuse 15a Fuse 20a Fuse 30a Fuse 5a Gnd Hot at all times Ksp a Me-sfi (me) control module (left front of engine compt) Mr2 Nca Park pawl control unit circuit 87 relay Purge control valve (right rear of engine) Pwm Red S10 Sig Starting/charging system Str Temperature sensor upstream of nox storage catalytic converter (gasoline direct injection w/ stratified charge) Vehicle interior fuse box (right front footwell) W/ eco start/stop function W/ fan 300w & 400w W/ fan 600w & 850w W11 (left rear of engine compt) W3/2 (left rear of engine compt) Wsa X25/13-c1 X25/13-c2 X25/14-c1 X25/18-c1 X26-c1 X36/2-c1 2.0L Turbo, Engine Performance Wiring Diagram (2 of 7) for Mercedes-Benz CLA250 4Matic 2014 List of elements for 2.0L Turbo, Engine Performance Wiring Diagram (2 of 7) for Mercedes-Benz CLA250 4Matic 2014: 36 (+) 5v + Can b h Can b l Can c h Can c l Computer data lines system Engine diagnosis indicator lamp Fuel level indicator Fuel pressure sensor (top of fuel tank) Fuel pump (in fuel tank) Fuel pump control unit (w/ 4matic) (behind right rear seat) Fuel pump control unit (w/o 4matic) (behind right rear seat) Fuel reserve indicator lamp Fuse 25a Fuse 5a Gnd Hot at all times Hot w/ circuit 15 relay energized Instrument cluster Ksp a Nca Nox sensor control unit (gasoline direct injection w/ stratified charge) Pwm Red S25 Sam control unit (left end of dash) Sig System data lines computer Uh2 Vehicle interior fuse box (right front footwell) W/ 4matic W/o 4matic W18 (under driver's seat) W3/2 (left rear of engine compt) X36/2-c1 2.0L Turbo, Engine Performance Wiring Diagram (3 of 7) for Mercedes-Benz CLA250 4Matic 2014 List of elements for 2.0L Turbo, Engine Performance Wiring Diagram (3 of 7) for Mercedes-Benz CLA250 4Matic 2014: 22 (+) (in exhaust, downstream of catalytic converter) oxygen sensor downstream of catalytic converter (in exhaust, upstream of catalytic converter) oxygen sensor upstream of catalytic converter (in oil pan) engine oil pump valve (left front of cylinder head) exhaust camshaft solenoid (right front of cylinder head) intake camshaft solenoid (right side of engine block) partial load operation crankcase ventilation valve (top left side of engine) full-load operation vent line heater element Gnd He (+) He (-) Inj h Inj l Me-sfi (me) control unit (left front of engine compt) Nca Pnk Pzev vent line contact switch (w/ pzev emission) Red Sig Sig1 Sig2 X130-c1 2.0L Turbo, Engine Performance Wiring Diagram (4 of 7) for Mercedes-Benz CLA250 4Matic 2014 List of elements for 2.0L Turbo, Engine Performance Wiring Diagram (4 of 7) for Mercedes-Benz CLA250 4Matic 2014: 13 (above cylinder 2) fuel injector cylinder 2 (in engine oil pan) oil level check switch (left rear of engine) (w/ gasoline direct injection & stratified charge) exhaust gas recirculation valve (top rear of engine) quantity control valve (w/ camtronic) intake camshaft valve lift switching actuator Crankshaft hall sensor Cylinder 3+4 knock sensor Fuel tank pressure & temperature sensor (on fuel rail) Knock sensor 2 (right center side of engine block) Pnk Pressure sensor downstream of throttle valve (top front of engine) Purging pressure sensor (top right rear of engine) W2 (top of engine) 2.0L Turbo, Engine Performance Wiring Diagram (5 of 7) for Mercedes-Benz CLA250 4Matic 2014 List of elements for 2.0L Turbo, Engine Performance Wiring Diagram (5 of 7) for Mercedes-Benz CLA250 4Matic 2014: 10 (right side of engine) coolant temperature sensor (top center rear of engine) charge air temperature sensor upstream of throttle valve (top of engine) charge air temperature sensor downstream of throttle valve Exhaust camshaft hall sensor (left front of cylinder head) Exhaust gas recirculation pressure sensor 1 (w/ gasoline direct injection & stratified charge) (left rear of engine) Exhaust gas recirculation pressure sensor 2 (w/ gasoline direct injection & stratified charge) (left rear of engine) Intake camshaft hall sensor (right front of cylinder head) Pnk Pressure sensor downstream of air filter (on air intake duct) Pressure sensor upstream of throttle valve (top center rear of engine) 2.0L Turbo, Engine Performance Wiring Diagram (6 of 7) for Mercedes-Benz CLA250 4Matic 2014 List of elements for 2.0L Turbo, Engine Performance Wiring Diagram (6 of 7) for Mercedes-Benz CLA250 4Matic 2014: 10 (right side of engine) coolant thermostat heating element Boost pressure control pressure transducer Coolant pump switchover valve (right side of engine) Cylinder ignition coils 1, 2, 3 & 4 (top of cylinder head) Divert air switchover valve (lower left front of engine) Pnk Red W2 (top of engine) W3/2 (left rear of engine compt) X26-c1 2.0L Turbo, Engine Performance Wiring Diagram (7 of 7) for Mercedes-Benz CLA250 4Matic 2014 List of elements for 2.0L Turbo, Engine Performance Wiring Diagram (7 of 7) for Mercedes-Benz CLA250 4Matic 2014: 16 (+) (+) 5v (above cylinder 1) fuel injector cylinder 1 (above cylinder 3) fuel injector cylinder 3 (above cylinder 4) fuel injector cylinder 4 (top rear of engine) (w/ gasoline direct injection & stratified charge) hot film mass air flow sensor +5v Gnd Inj h Inj l Lin c1 Me-sfi (me) control unit (left front of engine compt) Mot Sig Starting/charging system Throttle valve actuator (on throttle body)
EXTERIOR LIGHTS Backup Lamps Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Backup Lamps Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 17 (+) 30g Backup lamp Can b h Can b l Can c h Can c l Computer data lines system Dual clutch transmission fully integrated transmission control controller unit (in transmission) Fuse 5a Hot w/ circuit 30g relay energized Left rear lamp unit Right rear lamp unit Sam control unit (left end of dash) Vehicle interior fuse box (right front footwell) W19 (under front passenger's seat) W6 (left side of luggage compt) Exterior Lamps Wiring Diagram (1 of 3) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Exterior Lamps Wiring Diagram (1 of 3) for Mercedes-Benz CLA250 4Matic 2014: 58 (+) 30g 30l 58d Backup lamps circuit Can b h Can b l Computer data lines system Exterior lights switch Fra l Fra r Front fog lamp switch Fuse 5a Gnd Hazard warning system switch Headlamps Hot at all times Hot w/ circuit 15 relay energized Hot w/ circuit 30g relay energized Illumination switch Inner left brake lamp Instrument cluster Left backup lamp Left fog lamp Left front door control unit Left license plate lamp Left outside mirror Left rear lamp unit Left side- marker lamp Left tail lamp Left turn signal ind light Lin 1 Lin b15 Multi-function display Outer left brake lamp Outside mirror ambient lamp Outside mirror turn signal lamp Pltfl l Pltfl r Pw2 Rear fog light switch Right license plate lamp Right turn signal ind light Sam control unit (left end of dash) Sig1 Sig2 Sig3 Uh1 Uh2 Upltfl l Upltfl r Upper control panel control unit Vehicle interior fuse box (right front footwell) W/ xenon W/o xenon headlamps W12 (under left front of center console) W3/2 (left rear of engine compt) W6 (left side of luggage compt) Exterior Lamps Wiring Diagram (2 of 3) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Exterior Lamps Wiring Diagram (2 of 3) for Mercedes-Benz CLA250 4Matic 2014: 32 (+) 12 (left front wheelwell) w70 Active curve illumination actuator motor (w/ intelligent light system) Bls h Bls l Can e h Can e l Combination switch Computer data lines system Cornering illumination (w/ intelligent light system) Electronic stability program control unit (left front of engine compt) Engine compartment fuse & relay module (left side engine compt) Fuse 40a Fuse 5a Gnd Headlamp flasher/ high beam switch Hot at all times Hot w/ circuit 15 relay energized Parking light, standing light & daytime running light Parking light, standing light, high beam & daytime running light Right front lamp unit S12 Side- marker lamp Steering column module control unit (top of steering column) Stop lamp switch (top of brake pedal assembly) Turn signal lamp Turn signal lamps switch Turn signal light & side marker light W/ xenon headlamp W/o xenon headlamp W12 (under left front of center console) W3/1 (right front wheelwell) Exterior Lamps Wiring Diagram (3 of 3) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Exterior Lamps Wiring Diagram (3 of 3) for Mercedes-Benz CLA250 4Matic 2014: 37 (+) Abl l Abl r Active curve illumination actuator motor (w/ intelligent light system) Backup lamps circuit Can b h Can b l Can g h Can g l Computer data lines system Cornering illumination (w/ intelligent light system) Gnd Headlamp control unit (upper right footwell) Inner right brake lamp Instrument cluster Left front lamp unit Lin g1 Lin g2 Outer right brake lamp Outside mirror ambient lamp Outside mirror turn signal lamp Parking light, standing light & daytime running light Parking light, standing light, high beam & daytime running light Right backup lamp Right fog lamp Right front door control unit Right outside mirror Right rear lamp unit Right side- marker lamp Right tail lamp Side- marker lamp Turn signal lamp Turn signal light & side marker light W/ xenon headlamp W/o xenon headlamp W19 (under front passenger's seat) W3/2 (left rear of engine compt) Trailer Light Wiring Diagram, Early Production for Mercedes-Benz CLA250 4Matic 2014 List of elements for Trailer Light Wiring Diagram, Early Production for Mercedes-Benz CLA250 4Matic 2014: 28 (+) Ah bl Ah fra l Ah fra r Ah nsl Ah rfl Ah sl l Ah sl r Ahk io Ahk nio Can b h Can b l Computer data lines system Fuse 15a Fuse 20a Fuse 25a Fuse 5a Gnd Hot at all times Hot w/ circuit 15 relay energized Sam control unit (left end of dash) Trailer hitch release switch Trailer recognition control unit Trailer socket Vehicle interior fuse box (right front footwell) W6 (left side of luggage compt) W7 (right side of luggage compt) X52-c1 Trailer Light Wiring Diagram, Late Production for Mercedes-Benz CLA250 4Matic 2014 List of elements for Trailer Light Wiring Diagram, Late Production for Mercedes-Benz CLA250 4Matic 2014: 29 (+) (right side of luggage compt) w7 30g Ah bl Ah fra l Ah fra r Ah nsl Ah rfl Ah sl l Ah sl r Ahk i o Ahk n i o Can b h Can b l Computer data lines system Fuse 15a Fuse 20a Fuse 25a Fuse 5a Gnd Hot at all times Hot w/ circuit 15 relay energized Sam control unit (left end of dash) Trailer hitch release switch Trailer recognition control unit Trailer socket Vehicle interior fuse box (right front footwell) W7 (right side of luggage compt) X52-c1
GROUND DISTRIBUTION Ground Distribution Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Ground Distribution Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 23 Cylinder 1,2,3,4 ignition coils, nox sensor control unit, wiper motor, left front lamp unit, left fog lamp (if equipped), left fanfare horn, left daytime running lamps headlamp, front electrical prefuse box, engine compartment fuse & relay module, transmission oil cooling coolant circulation pump (w/ dual clutch transmission & eco start/stop function), alarm siren & sam control unit Driver seat control unit, left front reversible emergency tensioning retractor, fuel pump control unit, driver seat lumbar support pneumatic pump & driver seat lumbar support adjustment control unit Emergency call system control unit (if equipped), fuel filler/socket flap central locking actuator, left rear lamp unit, luggage compartment socket & left luggage compartment lamp Front passenger seat control unit, front passenger seat lumbar support pneumatic pump, right front reversible emergency tensioning retractor & front passenger seat lumbar support adjustment control unit Headlamp control unit (w/ bi xenon headlamp unit & intelligent light system), right fog lamp (if equipped), distronic electric controller unit (if equipped), collision prevention assist controller unit (if equipped), right front lamp unit, right fanfare horn, right daytime running lamps headlamp, center engine hood contact switch, right front brake wear sensor, coolant circulation pump (if equipped), stationary heater unit (if equipped) & stationary heater switch over valve (if equipped) Left rear door lock, left front door control unit, left rear door handle illumination (if equipped), left rear door ambiance illumination (if equipped), left front footwell lamp, passenger side instrument panel ambiance illumination, driver side instrument panel ambiance illumination, steering column module control unit, instrument cluster, diagnostic connector, drive train can (can c) potential distributor electrical connector, chassis can (can e) potential distributor electrical connector, electric parking brake switch & interior can (can b) potential distributor electrical connector Me sfi (me) control unit Overhead control panel control unit, multifunction camera (w/ automatic lane detection & speed limit assist), ata (edw)/towing sensor/interior motion sensor control unit (w/ anti-theft alarm system (ata (edw)) & panoramic sliding roof control module (if equipped) Right front door control unit, sam control unit, front end can (can g) potential distributor electrical connector, right front footwell lamp, parking system control unit (w/ active park assist & parktronic), right rear door lock, right rear door handle illumination (w/ ambiance illumination), right rear door ambiance illumination (if equipped), eco start/stop function additional battery relay (if equipped), ac housing & navigation module (if equipped) Stationary heater radio remote control receiver (if equipped), stationary heater fuel pump (if equipped), electric parking brake control unit, right rear lamp unit, trailer hitch release (if equipped), trailer socket (if equipped), trailer recognition control unit (if equipped), tv digital tuner (if equipped), backup camera (if equipped), sound system amplifier control unit (if equipped), digital audio broadcasting control unit (if equipped), satellite digital audio radio (sdar) control unit (w/ sirius satellite radio), left rear bumper intelligent radar sensor & right rear bumper intelligent radar sensor Tailgate wiper motor, trunk lid/liftgate central locking motor, rear window glass breakage sensor (w/ anti-theft alarm system), trunk lid/liftgate external operation switch, inner left rear lamp unit, inner right rear lamp unit, right license plate lamp & trunk lid/liftgate ambient lamp W11 (left rear of engine compt) W12 (under left front of center console) W15/1 (right front footwell) W15/2 (left front footwell) W18 (under driver's seat) W19 (under front passenger's seat) W3/1 (right front wheelwell) W3/2 (left rear of engine compt) W48 W7 (right side of luggage compt) W78 (center front of roof) W8/4
HEADLIGHTS Headlights Wiring Diagram (1 of 2) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Headlights Wiring Diagram (1 of 2) for Mercedes-Benz CLA250 4Matic 2014: 59 (+) (left rear of engine compt) 30g 58d Can b h Can b l Can e h Can e l Combination switch Computer data lines system Engine compartment fuse & relay module (left side engine compt) Exterior lights switch Front fog lamp button Fuse 15a Fuse 30a Fuse 40a Fuse 5a Gnd Headlamp flasher/ high beam switch Hot at all times Hot w/ circuit 15 relay energized Illumination switch Left active curve illumination actuator motor Left front exterior light led Left front lamp unit Left headlamp range adjustment actuator motor Left light distribution actuator motor Left parking light, standing light & daytime running light Left xenon bulb w/ integrated ignition module Lin b13 Low beam switch Night view assist button Overhead control panel control module Pltfl l Pw2 Rain/light sensor (w/ rain sensor) light sensor (w/o rain sensor) (integral to interior rearview mirror base assembly) Rear fog lamp button Right active curve illumination actuator motor Right front exterior light led Right front lamp unit Right headlamp range adjustment actuator motor Right light distribution actuator motor Right parking light, standing light & daytime running light Right xenon bulb w/ integrated ignition module S13 Sam control unit (left end of dash) Sig Sig1 Sig2 Sig3 Steering column module control unit (top of steering column) Uh1 Uh2 Upltfl l Upltfl r Vehicle interior fuse box (right front footwell) W3/1 (right front wheelwell) W3/2 W3/2 (left rear of engine compt) Headlights Wiring Diagram (2 of 2) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Headlights Wiring Diagram (2 of 2) for Mercedes-Benz CLA250 4Matic 2014: 43 (+) 5v (right front wheelwell) w3/1 (under front passenger's seat) w19 Abl l Abl r Can b h Can b l Can e h Can e l Can g h Can g l Computer data lines system Electric parking brake control unit (center rear of luggage compt) Electric parking brake switch Front axle level sensor (bi-xenon headlamp) (in front right wheelwell) Front fog lamp indicator lamp Gnd Headlamp control unit (upper right footwell) High beam indicator lamp Inner left rear lamp unit Inner right rear lamp unit Instrument cluster Interior lights system Left fog lamp Left rear fog lamp Lin g1 Lin g2 Low beam indicator lamp Rear axle level sensor (in rear right wheelwell) Rear fog lamp indicator lamp Right fog lamp Right rear fog lamp Sig Sw 1 Sw 3 Sw 4 Sw 6 W15/2 (left front footwell) W3/1 (right front wheelwell) W3/2 (left rear of engine compt) W6 (left side of luggage compt) W7/1 (right rear of luggage compt) X25/14-c2
HORN Horn Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Horn Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 35 (+) (-) (under left front of center console) w12 30g Button Can-b h Can-b l Can-e h Can-e l Center horns button Computer data lines system Decoupling relay Engine compartment fuse & relay module (left side of engine compt) Fanfare horn relay Front electrical prefuse box (left side of engine compt) Fuse 15a Fuse 5a Hot at all times Hot w/ circuit 30g relay energized Left fanfare horn (behind left side of front bumper) Left fanfare horn system Mr1 Nca Red Rel ff Right fanfare horn (behind right side of front bumper) Right fanfare horn system Sam control unit (left end of dash) Steering column module control unit (top of steering column) Steering wheel clock spring contact (part of steering column module) Steering wheel electronics (in steering wheel) Uh2 Vehicle interior fuse box (right front footwell) W3/1 (right front wheelwell) W3/2 (left rear of engine compt)
INSTRUMENT CLUSTER Collision Avoidance Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Collision Avoidance Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 20 (left front footwell) w15/2 Can e h Can e l Collision prevention assist controller unit (behind right side of front bumper) Collision prevention assist warning lamp Computer data lines system Control unit Engine compartment fuse & relay module (left side of engine compt) Fuse 10a Fuse 7.5a Hot at all times Hot w/ circuit 15 relay energized Instrument cluster Radar sensor Vehicle interior fuse box (right front footwell) W/ active park assist W/o active park assist W3/1 (right front wheelwell) X26/27-c2 X26/27-c3 Instrument Cluster Wiring Diagram (1 of 2) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Instrument Cluster Wiring Diagram (1 of 2) for Mercedes-Benz CLA250 4Matic 2014: 62 (center rear of luggage compt) electric parking brake control unit (dual clutch transmission) Anti-lock brake system indicator lamp Brake fluid level switch (on brake fluid reservoir) Brake system warning lamp Can b h Can b l Can e h Can e l Collision prevention assist warning lamp (w/ collision warning system) distronic warning lamp (w/ distronic plus) Computer data lines system Coolant level switch (in engine coolant reservoir) Coolant temperature gauge Coolant temperature warning lamp Electronic stability program warning lamp Engine diagnosis indicator lamp Esp/asr off warning lamp Front fog lamp indicator lamp Fuel level indicator gauge Fuel reserve indicator lamp Fuse 10a Fuse 30a Fuse 5a Gear indicator (prnd) Gnd High beam indicator lamp Hot at all times Instrument cluster Instrument illumination Instrument illumination brightness control Left turn signal ind lamp Lin 1 Lines system computer data Low beam indicator lamp Multi-function display Nca Outside temperature sensor (behind left side of front bumper) Parking brake indicator lamp Pw2 Rear fog lamp indicator lamp Red Right turn signal ind lamp Sam control unit (left front of dash) Seat belt warning lamp Sig Speedometer Standing lamps indicator lamp Sw 1 Sw 3 Sw 4 Sw 6 Tachometer Tire pressure monitor warning lamp (if equipped) Transmission mode display (s) Uh1 Uh2 Vehicle interior fuse box (right front footwell) W15/2 (left front footwell) W3/2 (left rear of engine compt) W7 (right side of luggage compt) X18/3-c1 X36/2-c1 Instrument Cluster Wiring Diagram (2 of 2) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Instrument Cluster Wiring Diagram (2 of 2) for Mercedes-Benz CLA250 4Matic 2014: 27 Ata (edw) function indicator (if equipped) Automatic child seat recognition air bag off indicator lamp Automatic transmission mode button Can e h Can e l Computer data lines system Driver seat belt buckle restraint system switch (in driver seat belt buckle assembly) Eco start/ stop function button (if equipped) Electric parking brake switch Gnd Hazard warning system button Interior lights system Left front heated seat button (if equipped) Left fuel tank fuel level indicator fill level sensor (in fuel tank) Lin 1 Nca Parking system button (if equipped) Right front brake wear sensor (on right front brake caliper assembly) Right front heated seat button (if equipped) Right fuel tank fuel level indicator fill level sensor (in fuel tank) Sig Stationary heater button (if equipped) Upper control panel control unit W12 (under left front of center console) W3/1 (right front wheelwell) X55/3-c1 X88/12-c1 Overhead Console Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Overhead Console Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 40 (+) (w/ exterior lights & vision package) (w/ mirror package) 30g 58d Ambient lamp Door locks & anti-theft systems Forward automatic dimming mirror light sensor Front dome lamp switch Fuse 10a Garage door opener (if equipped) Garage door opener button 1 Garage door opener button 2 Garage door opener button 3 Garage door opener indicator lamp Gnd Hot at all times Inside rearview mirror Inside rearview mirror dimming Interior lamp automatic function switch Interior lights system Interior temperature sensor w/ integrated fan Left front reading lamp switch Left interior lamp Left mounting console incident illumination Lin b13 Overhead control panel control unit Panoramic sliding roof switch (if equipped) Rain/light sensor (w/ rain sensor) light sensor (w/o rain sensor) (integral to interior rearview mirror base assembly) Rear dome lamp switch Rearward automatic dimming mirror light sensor Red Right front reading lamp switch Right interior lamp Right mounting console incident illumination Sam control unit (left end of dash) Sig Vehicle interior fuse box (right front footwell) Vehicle interior humidity & temperature sensor (in overhead console) W78 (center front of roof)
INTERIOR LIGHTS Courtesy Lamps Wiring Diagram (1 of 4) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Courtesy Lamps Wiring Diagram (1 of 4) for Mercedes-Benz CLA250 4Matic 2014: 38 (+) (+) bu (+) rd (+) ye Can-b h Can-b l Computer data lines system Driver-side instrument panel ambiance illumination Engine compartment fuse & relay module (left side engine compt) Front passenger seat ambiance illumination Front passenger seat control module (under front passenger seat) Front passenger side bag squib (outer edge of front passenger seat back) Fuse 40a Gnd Hot at all times Left front footwell lamp Left rear seat ambiance illumination Passenger-side instrument panel ambiance illumination Pw2 Right front footwell lamp Right rear footwell lamp Right rear seat ambiance illumination S13 Sam control unit (left end of dash) Sig Trunk lid/liftgate ambient lamp (exterior light & vision package) W/ ambiance illumination W/ seat ambiance illumination W/o ambiance illumination W/o seat ambiance illumination W12 (under left front of center console) W15/1 (right front footwell) W15/2 (left front footwell) W18 (under driver's seat) W19 (under front passenger's seat) W3/2 (left rear of engine compt) W8/4 X55/3-c1 Courtesy Lamps Wiring Diagram (2 of 4) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Courtesy Lamps Wiring Diagram (2 of 4) for Mercedes-Benz CLA250 4Matic 2014: 32 (+) Can-b h Can-b l Computer data lines system Driver seat ambiance illumination Driver seat control unit (under driver seat) Driver side bag squib (outer edge of driver seat back) Gnd Left front illuminated door sill molding (if equipped) Left rear door ambiance illumination Left rear door door handle illumination Left rear door lock Left rear door rotary tumbler switch Left rear footwell lamp Nca Right front illuminated door sill molding (if equipped) Right rear door ambiance illumination Right rear door door handle illumination Right rear door lock Right rear door rotary tumbler switch W/ ambiance illumination W/ seat ambiance illumination W/o ambiance illumination W/o seat ambiance illumination W15/1 (right front footwell) W15/2 (left front footwell) W18 (under driver's seat) X100/3-c1 X100/4-c1 X35/3-c1 X35/4-c1 X55/3-c1 Courtesy Lamps Wiring Diagram (3 of 4) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Courtesy Lamps Wiring Diagram (3 of 4) for Mercedes-Benz CLA250 4Matic 2014: 47 (+) 58d Ambient lamp (exterior light & vision package) Can e h Can e l Computer data lines system Front dome lamp switch Fuse 10a Fuse 30a Fuse 5a Garage door opener Garage door opener indicator lamp Glove box lamp Glove box lamp switch Gnd Hot at all times Hot w/ circuit 15r1 relay energized Inside rearview mirror Instrument cluster Interior lamp automatic function switch Left front mirror lamp switch Left front reading lamp switch Left inside rearview mirror interior lamp (exterior light & vision package) Left luggage compartment lamp Left mounting console incident illumination Left sun visor mirror lamp Lin b13 Overhead control panel unit Pnk Rain/light sensor (w/ rain sensor) light sensor (w/o rain sensor) (integral to interior rearview mirror base assembly) Rear dome lamp switch Red Right front mirror lamp switch Right front reading lamp switch Right inside rearview mirror interior lamp (exterior light & vision package) Right mounting console incident illumination Right sun visor mirror lamp S21 S22 Sun visors w/ illuminated mirrors Tailgate external operation switch Vehicle interior fuse box (right front footwell) W12 (under left front of center console) W48 W6 (left side of luggage compt) W78 (center front of roof) X29-c1 Courtesy Lamps Wiring Diagram (4 of 4) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Courtesy Lamps Wiring Diagram (4 of 4) for Mercedes-Benz CLA250 4Matic 2014: 44 (+) (+) rd (+) ye (+)/(+) ye (exterior light & vision package) right front door ambiance illumination (exterior light & vision package) right front door exit & warning lamp Can b h Can b l Computer data lines system Gnd Left front door ambiance illumination Left front door ambiance illumination (exterior light & vision package) Left front door control unit Left front door exit & warning lamp (exterior light & vision package) Left front door handle illumination Left front door lock Left front door rotary tumbler switch Left rear reading lamp Left rear reading lamp switch Nca Rear ambient lamp Rear dome lamp Rear dome lamp (w/ reading lamps) Red Right front door ambiance illumination Right front door control unit Right front door handle illumination Right front door lock Right front door rotary tumbler switch Right rear reading lamp Right rear reading lamp switch Sig W/ ambiance illumination W/ exterior light & vision package W/o ambiance illumination W/o exterior light & vision package W15/1 (right front footwell) W15/2 (left front footwell) X157/6-c1 X157/6-c2 X157/7-c1 X157/7-c2 X35/1-c1 X35/2-c1 Instrument Illumination Wiring Diagram (1 of 2) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Instrument Illumination Wiring Diagram (1 of 2) for Mercedes-Benz CLA250 4Matic 2014: 53 (if equipped) front center console cup holder ambiance illumination (if equipped) two-way radio switch 30g 58d Abl l Abl r Can e h Can e l Can g h Can g l Can-b h Can-b l Combination switch Computer data lines system Cornering illumination (if equipped) Electrical parking brake switch Engine compartment fuse & relay module (left side engine compt) Exterior lights switch Front cigarette lighter w/ ashtray illumination (if equipped) Fuse 15a Fuse 40a Fuse 5a Gnd Headlamp control unit (upper right footwell) Headlamp flasher/ high beam switch Hot at all times Hot w/ circuit 15 relay energized Hot w/ circuit 30g relay energized Left front lamp unit Left rear power window switch Nca Pw2 Red Right front lamp unit Right rear power window switch S13 Sam control unit (left end of dash) Sig 1 Sig 2 Sig 3 Steering column module control unit (top of steering column) Switch illumination Vehicle interior fuse box (right front footwell) W12 (under left front of center console) W15/2 (left front footwell) W3/1 (right front wheelwell) W3/2 (left rear of engine compt) X100/4-c1 X138/1-c1 X138/1-c4 X300/3-c1 X35/3-c1 X35/4-c1 Instrument Illumination Wiring Diagram (2 of 2) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Instrument Illumination Wiring Diagram (2 of 2) for Mercedes-Benz CLA250 4Matic 2014: 34 (+) (w/ tailgate control) driver trunk lid/liftgate control button (w/ trunk lid release) trunk lid release button 58d Anti-theft alarm system/emergency call system button group Can b h Can b l Can e h Can e l Computer data lines system Fuse 10a Fuse 30a Gnd Hot at all times Instrument cluster Instrument illumination & instrument illumination brightness control Left front door central locking interior switch Left front door control unit Left front door door handle illumination (w/ ambiance illumination) Lin b13 Overhead control panel unit Passenger side power window switch Red Right front door central locking interior switch Right front door control unit Right front door door handle illumination (w/ ambiance illumination) Sig Vehicle interior fuse box (right front footwell) W15/1 (right front footwell) W15/2 (left front footwell) W78 (center front of roof) X157/6-c2 X157/7-c2 X35/1-c1 X35/2-c1
MEMORY SYSTEMS Driver"s Memory Seat Wiring Diagram (1 of 2) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Driver"s Memory Seat Wiring Diagram (1 of 2) for Mercedes-Benz CLA250 4Matic 2014: 25 (+) 30g Can b h Can b l Computer data lines system Driver seat backrest inclination adjustment motor & hall sensor Driver seat control unit Driver seat head restraint adjustment motor & hall sensor Driver seat lumbar support adjustment control unit (under driver seat) Driver seat lumbar support adjustment switch Driver seat lumbar support pneumatic pump Fuse 30a Fuse 7.5a Gnd Hot at all times Hot w/ circuit 30g relay energized Lin b12 Mot Red S22 Seats system Sig Vehicle interior fuse box (right front footwell) W18 (under driver's seat) X55/4-c5 Driver"s Memory Seat Wiring Diagram (2 of 2) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Driver"s Memory Seat Wiring Diagram (2 of 2) for Mercedes-Benz CLA250 4Matic 2014: 22 (+) Can b h Can b l Computer data lines system Driver seat control unit Driver seat fore/aft adjustment motor & hall sensor Driver seat height adjustment motor & hall sensor Driver seat inclination adjustment motor & hall sensor Fuse 30a Gnd Hot at all times Interior lights system Left front door control unit Left front seat adjustment switch group Lin b5 Mot Sam control unit (left end of dash) Seats system Sig Vehicle interior prefuse box (right front footwell) W15/2 (left front footwell) X35/1-c1 Memory Mirrors Wiring Diagram (1 of 2) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Memory Mirrors Wiring Diagram (1 of 2) for Mercedes-Benz CLA250 4Matic 2014: 35 (+) (right front footwell) w15/1 Automatic dimming mirror Can b h Can b l Computer data lines system Driver side power window & outside mirror adjustment switch Fuse 30a Gnd Horizontal inclination adjustment actuator motor Horizontal inclination adjustment potentiometer Hot at all times Left outside mirror adjustment switch Lin b6 Mirror heater Mot Outside mirror adjustment switch Outside mirror fold-in/fold-out electric motor Outside mirror fold-in/fold-out switch Pnk Red Right blind spot assist readiness & warning indicator Right front door control unit Right front seat adjustment switch group Right outside mirror Right outside mirror adjustment switch Right outside mirror ambient lamp Right outside mirror turn signal lamp Sig Ta b(+) Ta w(+) Vehicle interior fuse box (right front footwell) Vertical inclination adjustment actuator motor Vertical inclination adjustment potentiometer X35/2-c1 Memory Mirrors Wiring Diagram (2 of 2) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Memory Mirrors Wiring Diagram (2 of 2) for Mercedes-Benz CLA250 4Matic 2014: 29 (+) Automatic dimming mirror B(+) Can-b h Can-b l Computer data lines system Fuse 30a Gnd Horizontal inclination adjustment actuator motor Horizontal inclination adjustment potentiometer Hot at all times Left blind spot assist readiness & warning indicator Left front door control module Left front seat adjustment switch group Left outside mirror Left outside mirror ambient lamp Left outside mirror turn signal lamp Lin b5 Mirror heater Mot Outside mirror fold-in/fold-out electric motor Pnk Sig Ta w(+) Vehicle interior fuse box (right front footwell) Vertical inclination adjustment actuator motor Vertical inclination adjustment potentiometer W15/2 (left front footwell) X35/1-c1 Passenger"s Memory Seat Wiring Diagram (1 of 2) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Passenger"s Memory Seat Wiring Diagram (1 of 2) for Mercedes-Benz CLA250 4Matic 2014: 28 (+) (under front passenger's seat) w19 30g Can b h Can b l Computer data lines system Front passenger backrest seat inclination adjustment motor & hall sensor Front passenger seat control unit Front passenger seat head restraint adjustment motor & hall sensor Front passenger seat lumbar support adjustment control unit (under front passenger seat) Front passenger seat lumbar support adjustment switch Front passenger seat lumbar support pneumatic pump Fuse 30a Fuse 7.5a Gnd Hot at all times Hot w/ circuit 30g relay energized Lin b12 Mot Red S15 S21 Seats system Sig Vehicle interior fuse box (right front footwell) W19 (under front passenger's seat) X35/4-c5 X55/4-c5 Passenger"s Memory Seat Wiring Diagram (2 of 2) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Passenger"s Memory Seat Wiring Diagram (2 of 2) for Mercedes-Benz CLA250 4Matic 2014: 23 (+) Can b h Can b l Computer data lines system Front passenger seat control unit Front passenger seat fore/aft adjustment motor & hall sensor Front passenger seat height adjustment motor & hall sensor Front passenger seat inclination adjustment motor & hall sensor Fuse 30a Gnd Hot at all times Interior lights system Lin b5 Mot Red Right front door control unit Right front seat adjustment switch group Sam control unit (left end of dash) Seats system Sig Vehicle interior prefuse box (right front footwell) W15/1 (right front footwell) X35/2-c1
NAVIGATION Blind Spot Information System Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Blind Spot Information System Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 23 A b(+) A w(+) Can b h Can b l Can s h Can s l Computer data lines system Fuse 5a Gnd Hot w/ circuit 15 relay energized Left blind spot assist readiness & warning indicator Left front door control unit Left outside mirror Left rear bumper intelligent radar sensor (behind left end of rear bumper) Right blind spot assist readiness & warning indicator Right front door control unit Right outside mirror Right rear bumper intelligent radar sensor (behind right end of rear bumper) Sam control unit (left end of dash) Vehicle interior fuse box (right front footwell) W7 (right side of luggage compt) X172/2 X172/2-c1 Camera Cover Control Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Camera Cover Control Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 15 30g Camera cover control unit (behind left rear seat) Can b h Can b l Computer data lines system Es gnd Es sig Fuse 7.5a Hot w/ circuit 30g relay energized Mot Rear camera cover motor (center rear of luggage compt) Rear camera cover motor switch Red Vehicle interior fuse box (right front footwell) W6 (left side of luggage compt) Emergency Call Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Emergency Call Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 35 (left side of luggage compt) (right side of luggage compt) sound system amplifier control unit (w/ iphone drive kit 4/4s & 5) iphone drive kit control unit 1a2 A adar A gps A not A tel As (+) As (-) C sig Can d h Can d l Center instrument panel speaker Comand actuation circuit Comand control unit (w/o audio 20) radio (w/ audio 20) Computer data lines system Early production Emergency call system antenna (under right side of hat shelf) Emergency call system control unit (under center of hat shelf) Fuse 5a Global positioning system antenna splitter (under right side of hat shelf) Hot at all times Late production Mf (+) Mf (-) Multi-function antenna Nca Shield Tel st Vehicle interior fuse box (right front footwell) W/ navigation system W/ sound system amplifier W/o navigation system W/o sound system amplifier Multifunction Camera Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Multifunction Camera Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 13 (+) (or red) 30g Auxiliary heater heating element Can g h Can g l Computer data lines system Fuse 5a Gnd Hot w/ circuit 30g relay energized Multi-function camera (top center of windshield) Vehicle interior fuse box (right front footwell) W78 (center front of roof) Navigation Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Navigation Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 31 (right front footwell) w15/1 30g A fm2 A gps As n (+) As n (-) Can a h Can a l Computer data lines system Cradle navigation module Fm 2 & dab antenna amplifier (base of left "c" pillar) Fm/tmc antenna splitter (center of dash) Fm2 Fuse 30a Global positioning system antenna splitter (under right side of hat shelf) Gnd Hot w/ circuit 30g relay energized Lvds (+) Lvds (-) Mf (+) Mf (-) Navigation module (right end of dash) Nca Pnd Radio (w/ audio 20) comand control unit (w/o audio 20) S16 Shield Vehicle interior fuse box (right front footwell) X1/61-c1 X1/61-c2 X1/61-c3 Parktronic Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Parktronic Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 39 (+) (left end of dash) sam control unit 30g Can b h Can b l Can e h Can e l Center left front parking system distance sensor (behind center left side of front bumper) Center left rear parking system distance sensor (behind inner left center of rear bumper) Center right front parking system distance sensor (behind center right side of front bumper) Center right rear parking system distance sensor (behind center right side of rear bumper) Computer data lines system Ddat Front parking system warning indicator Fuse 5a Gnd Hot at all times Hot w/ circuit 30g relay energized Inner left front parking system distance sensor (behind inner left side of front bumper) Inner left rear parking system distance sensor (behind inner left side of rear bumper) Inner right front parking system distance sensor (behind inner right side of front bumper) Inner right rear parking system distance sensor (behind inner right side of rear bumper) Lin 1 Outer left front parking system distance sensor (behind outer left side of front bumper) Outer left rear parking system distance sensor (behind outer left side of rear bumper) Outer right front parking system distance sensor (behind outer right side of front bumper) Outer right rear parking system distance sensor (behind outer right side of rear bumper) Parking system button Parking system control unit (under front of center console) Pnk Rear parking system warning indicator S12 Upper control panel control unit Vehicle interior fuse box (right front footwell) W12 (under left front of center console) W15/1 (right front footwell) X26/27-c1 X35/28-c1 X35/37-c1 Rear Camera Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Rear Camera Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 24 (center of luggage compt lid) (early production) backup camera (under front passenger's seat) w19 30g Backup camera (late production) (center of luggage compt lid) Can g h Can g l Computer data lines system Early production Fuse 5a Gnd Hot w/ circuit 30g relay energized Late production Nca Radio (w/ audio 20) comand control unit (w/o audio 20) Red Red/ pnk Red/pnk Rvh Shield Vds (+) Vds (-) Vehicle interior fuse box (right front footwell) Vid W7 (right side of luggage compt)
POWER DISTRIBUTION Power Distribution Wiring Diagram (1 of 5) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Power Distribution Wiring Diagram (1 of 5) for Mercedes-Benz CLA250 4Matic 2014: 75 (left side of engine compt) front electrical prefuse box (not used) (right front footwell) vehicle interior fuse box 85a 85b 86a 86b Alternator Audio/ comand control panel Audio/ comand display Automatic air conditioning control & operating unit Battery sensor Circuit 30g relay Decoupling relay Driver seat control unit (w/ memory) Driver seat lumbar support adjustment control unit (if equipped) & driver seat control unit (w/ memory) Eco start/ stop function additional battery relay Electric parking brake control unit Electrical power steering control unit Fan motor Front passenger seat control unit Front passenger seat control unit (if equipped) Fuel pump control unit Fuse 100a Fuse 10a Fuse 125a Fuse 150a Fuse 200a Fuse 200a (or 250a) Fuse 20a Fuse 25a Fuse 300a Fuse 30a Fuse 40a Fuse 5a Fuse 7.5a Fuse 7.5a (or 5a) Fuse 70a Fuse 80a Fuse n/a Left front door control unit On board electrical system battery Overhead control panel control unit Ptc heater booster (if equipped) Pw2 Pyrofuse (on battery positive (+) post) Red Right front door control unit S10 S15 S18 S19 S20 S21 S22 S23 S24 S25 S26 Sam control unit Sound system amplifier control unit (if equipped) Starter Steering column module control unit Telematics services communication module (early production) & keyless-go control unit (if equipped) To engine compartment fuse & relay module (diagram 2 of 5) To engine compartment fuse & relay module (diagram 3 of 5) To fuse 110 (diagram 2 of 5) To fuse 26 (diagram 5 of 5) To fuse 47 (diagram 2 of 5) Trailer recognition control unit (if equipped) Trunk lid/lift gate control unit Uh1 W10 (left side of engine compt) W3/2 (left rear of engine compt) X25/14-c1 Power Distribution Wiring Diagram (2 of 5) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Power Distribution Wiring Diagram (2 of 5) for Mercedes-Benz CLA250 4Matic 2014: 79 (+) (-) (diagram 1 of 5) (left side engine compt) engine compartment fuse & relay module (not used) (right front footwell) vehicle interior fuse box (w/ eco start/ stop function) 30z Ac housing Alarm siren (w/ anti-theft alarm system) All-wheel drive control unit (4matic) Ata (edw)/towing sensor/interior motion sensor control unit Camera cover control unit (w/ backup camera) Charging socket electrical connector (w/ emergency vehicles) Circuit 15 relay (unlatched) Circuit relay Diagnostic connector Distronic electric controller unit & collision prevention assist controller unit Electronic stability program control unit Fanfare horn relay Fm, am & cl (zv) antenna amplifier From front electrical prefuse box (diagram 1 of 5) From fuse 46 c From fuse 63 d (diagram 1 of 5) Fuse 10a Fuse 15a Fuse 20a Fuse 240a 25a Fuse 240b n/a Fuse 25a Fuse 30a Fuse 40a Fuse 5a Fuse 7.5a Fuse n/a Headlamp control unit Heated windshield relay Instrument cluster Iphone drive kit control unit (if equipped) & comand fan motor (if equipped) Left front lamp unit Left front lamp unit (w/ static led headlamp) Left front reversible emergency tensioning retractor (w/ pre- safe) Mobile phone electrical connector (w/ comfort telephony) Mr1 Mr2 Navigation module (if equipped) & iphone cradle control unit (reinstallation for iphone) Overhead control panel control unit Panoramic sliding roof control module (if equipped) Parking system control unit (w/ active park assist) Pw1 Pw2 Radio (w/ audio 20) & comand control unit (w/o audio 20) Red Red/ pnk Right front lamp unit Right front lamp unit (w/ static led headlamp) Right front reversible emergency tensioning retractor (w/ pre- safe) S12 S13 S14 S16 S17 S27 S28 S29 Sam control unit Starter circuit relay Stationary heater radio remote control receiver (if equipped) Stationary heater unit (if equipped) Telematics services communication module (late production) & emergency call system control unit To circuit 15r2 relay (diagram 3 of 5) To circuit 87 relay (diagram 3 of 5) To electronic ignition switch control unit (diagram 5 of 5) To fuse 99 (diagram 4 of 5) Uh2 Upper control panel control unit W3/2 (left rear of engine compt) W7 (right side of luggage compt) Windshield wiper on/off relay Power Distribution Wiring Diagram (3 of 5) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Power Distribution Wiring Diagram (3 of 5) for Mercedes-Benz CLA250 4Matic 2014: 51 (+) (-) (not used) (right front footwell) vehicle interior fuse box (under left front of center console) w12 15r2 87m Alternator, coolant thermostat heating element, boost pressure control pressure transducer, coolant pump switchover valve, divert air switchover valve, oxygen sensor downstream of catalytic converter, engine oil pump valve, partial load operation crankcase ventilation valve & full load operation vent line heater element Ashtray illumination Backup relay Cigarette lighter heating element Circuit 15r2 relay Circuit 87 relay Circuit 87m relay Cylinder 1, 2, 3 & 4 ignition coils Dual clutch transmission fully integrated transmission control controller unit (if equipped) Electronic stability program control unit Engine compartment fuse & relay module (left side engine compt) From circuit 15 relay b (diagram 2 of 5) From fuse 79 h (diagram 2 of 5) From vehicle interior fuse box (diagram 1 of 5) Front cigar lighter w/ ashtray illumination Fuse 10a Fuse 15a Fuse 20a Fuse 25a Fuse 5a Fuse 7.5a Fuse n/a Heated rear window relay Heated windshield relay Intake camshaft solenoid, exhaust camshaft solenoid & cylinder 1, 2, 3 & 4 gas injection valves Interior lights system Luggage compartment socket Me-sfi (me) control unit Mr2 Not used Park pawl control unit circuit 87 relay Radiator shutters actuator (if equipped) Rear center console power outlet Red Sam control unit To circuit 15r1 relay (diagram 4 of 5) Vehicle interior power outlet W/ ashtray package/smoker package W/o ashtray package/smoker package W12 (under left front of center console) W15/1 (right front footwell) W3/2 (left rear of engine compt) W6 (left side of luggage compt) X138/1-c1 Power Distribution Wiring Diagram (4 of 5) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Power Distribution Wiring Diagram (4 of 5) for Mercedes-Benz CLA250 4Matic 2014: 36 (+) (-) (not used) (right front footwell) vehicle interior fuse box 15r1 All-wheel drive control unit (4matic) Backup camera (if equipped) Circuit 15r1 relay Circuit relay Dedicated short-range communications control unit (if equipped) electronic toll collection control unit (if equipped) Digital audio broadcasting control unit (w/ digital radio), satellite digital audio radio (sdar) control unit (w/ sirius satellite radio) & tuner unit (if equipped) Electric parking brake control unit Exterior lights switch From circuit 15r2 relay (diagram 3 of 5) From fuse 97 (diagram 2 of 5) Front passenger seat occupied recognition & acsr (w/ automatic child seat recognition) & weight sensing system (wss) control unit (if equipped) Fuel pump control unit Fuse 15a Fuse 1a Fuse 5a Fuse 7.5a Fuse n/a Glove box lamp Left rear bumper intelligent radar sensor Media interface control unit Multifunction camera (if equipped) Rear window wiper relay Red/ pnk Sam control unit Special-purpose vehicle interface (w/ electronic interface, customer requested) Tailgate wiper motor Tire pressure monitor control unit (if equipped) Trailer recognition control unit (w/ trailer hitch) Trailer socket (w/ trailer hitch) Tv digital tuner (if equipped) W15/1 (right front footwell) Power Distribution Wiring Diagram (5 of 5) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Power Distribution Wiring Diagram (5 of 5) for Mercedes-Benz CLA250 4Matic 2014: 30 A hf Aux (+) Can b h Can b l Can d h Can d l Can e h Can e l Can g h Can g l Computer data lines system Dual clutch transmission fully integrated transmission control controller unit Eco start/ stop function additional battery relay Eco start/stop function additional battery Electronic ignition switch control unit (left center of dash) Fm, am & cl (zv) antenna amplifier From k fuse 56 (diagram 1 of 5) From vehicle interior fuse box (diagram 2 of 5) Ft df Fuse 10a Left front door control unit Pb 30b Red Sam control unit Vehicle interior fuse box (right front footwell) W12 (under left front of center console) W83/2 (under right front of center console) X25/13-c1 X35/1-c2 X4/48-c1
POWER DOOR LOCKS Automatic Door Locks Wiring Diagram (1 of 3) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Automatic Door Locks Wiring Diagram (1 of 3) for Mercedes-Benz CLA250 4Matic 2014: 35 (+) (-) 58d Ata (edw) function ind Can-b h Can-b l Central locking motor Computer data lines system Data Driver door infrared remote control receiver Driver side power window & outside mirror adjustment switch Electronic ignition switch control/unit (left center of dash) Ft df Fuse 30a Gnd Hot at all times Left front door control unit Left front door lock Left rear door lock Lin b5 Mot Pnk Rear side window child safety lock switch Right rear door lock Rotary tumbler switch Sig Upper control panel control unit Vehicle interior fuse box (right front footwell) W15/1 (right front footwell) W15/2 (left front footwell) X157/7-c2 X35/1-c1 X35/1-c2 X35/3-c1 X35/4-c1 Automatic Door Locks Wiring Diagram (2 of 3) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Automatic Door Locks Wiring Diagram (2 of 3) for Mercedes-Benz CLA250 4Matic 2014: 28 (+) (center front of roof) w78 58d Anti-theft alarm system/emergency call system button group (if equipped) Automatic rear end door Computer data lines system Engine compartment fuse & relay module (left side engine compt) Fuse 10a Fuse 40a Gnd Horns system Hot at all times Left front door central locking interior switch Lift gate locking pawl switch Lin b 13 Overhead control panel control unit Pw2 Red Rotary tumbler switch S13 Sam control unit (left end of dash) Sig Trunk lid/liftgate central locking motor Trunk lid/liftgate control control unit Uh2 Vehicle interior fuse box (right front footwell) W3/2 (left rear of engine compt) W6 (left side of luggage compt) Automatic Door Locks Wiring Diagram (3 of 3) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Automatic Door Locks Wiring Diagram (3 of 3) for Mercedes-Benz CLA250 4Matic 2014: 42 (+) (-) (under left front of center console) w12 Ata (edw)/towing sensor/interior motion sensor control unit (in overhead control panel) Can b h Can b l Can-b h Can-b l Can-c h Can-c l Can-e h Can-e l Central locking motor Computer data Computer data lines system Dual clutch fully integrated transmission control controller unit (in transmission) Electronic ignition switch control unit (left center of dash) Fuse 10a Fuse 30a Fuse 5a Gnd Hot at all times Instrument cluster Left front door exit & warning lamp (w/ exterior lights package) Left front door handle illumination (w/ exterior lights package) Lines system Rear window glass breakage sensor (w/ interior protection) Red Right front door central locking interior switch Right front door control unit Right front door exit & warning lamp (w/ exterior lights package) Right front door handle illumination (w/ exterior lights package) Right front door lock Rotary tumbler switch Sig Vehicle interior fuse box (right front footwell) W15/1 (right front footwell) W78 (center front of roof) W8/4 X157/6-c2 X35/2-c1 Zv-mot + Keyless Go System Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Keyless Go System Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 30 (under driver's seat) w18 Ant Can-b h Can-b l Can-e h Can-e l Computer data lines system Fm, am & cl (zv) antenna amplifier (center rear of roof) Fuse 5a Hot at all times Instrument cluster Keyless go control module (if equipped) Left front keyless go door handle Left rear door keyless go antenna Left rear keyless go door handle Multi- function display Pnk Right front keyless go door handle Right rear door keyless go antenna Right rear keyless go door handle Sig Trunk keyless go antenna Vehicle interior fuse box (right front footwell) Vehicle interior keyless go antenna X100/1-c3 X100/2-c3 X35/1-c2 X35/2-c2 X35/3-c1 X35/4-c1
POWER MIRRORS Automatic Day/Night Mirror Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Automatic Day/Night Mirror Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 38 (+) (right front footwell) w15/1 58d Ambient lamp Automatic dimming mirror Can b h Can b l Can-b h Can-b l Computer data lines system Forward automatic dimming mirror light sensor Fuse 10a Fuse 30a Garage door opener Garage door opener button 1 Garage door opener button 2 Garage door opener button 3 Garage door opener indicator lamp Gnd Hot at all times Inside rearview mirror Inside rearview mirror dimming Left front door control unit Left inside rearview mirror interior lamp Left outside mirror Lin b13 Overhead control panel control module Rain/light sensor (w/ rain sensor) light sensor (w/o rain sensor) (integral to interior rearview mirror base assembly) Rearward automatic dimming mirror light sensor Red Right front door control unit Right inside rearview mirror interior lamp Right outside mirror Vehicle interior fuse box (right front footwell) W15/2 (left front footwell) W78 (center front of roof) X35/1-c1 X35/2-c1 Fold-back Mirrors Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Fold-back Mirrors Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 25 (+) Can b h Can b l Can-b h Can-b l Computer data lines system Driver side power window & outside mirror adjustment switch group Fuse 30a Gnd Hot at all times Left front door control unit Left outside mirror Lin b5 Mot Outside mirror fold-in/fold-out electric motor Outside mirror fold-in/fold-out switch Pnk Red Right front door control unit Right outside mirror Vehicle interior fuse box (right front footwell) W15/1 (right front footwell) W15/2 (left front footwell) X35/1-c1 X35/2-c1
POWER SEATS Heated Seats Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Heated Seats Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 37 (+) 30g Can b h Can b l Computer data Computer data lines system Control unit Driver seat control unit (under driver seat) Front passenger seat control unit (under front passenger seat) Fuse 30a Fuse 5a Fuse 7.5a Gnd Hot at all times Hot w/ circuit 30g relay energized Left front backrest heated cushion Left front heated seat button Left front seat sitting surface heated cushion Lin Lin 1 Lines system Right front backrest heated cushion Right front heated seat button Right front seat sitting surface heated cushion Right front seat sitting surface heated cushion (w/ electrically adjustable) S15 S21 S22 Sam control unit (left end of dash) Upper control panel Vehicle interior fuse box (right front footwell) W/ electrically adjustable W/o electrically adjustable W12 (under left front of center console) W18 (under driver's seat) W19 (under front passenger's seat) X55/4-c5 Lumbar Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Lumbar Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 19 (+) 30g Driver seat lumbar support adjustment control unit (under driver seat) Driver seat lumbar support adjustment switch Driver seat lumbar support pneumatic pump Front passenger seat lumbar support adjustment control unit (under front passenger seat) Front passenger seat lumbar support adjustment switch Front passenger seat lumbar support pneumatic pump Fuse 7.5a Gnd Hot w/ circuit 30g relay energized Red S15 Sig Vehicle interior fuse box (right front footwell) W18 (under driver's seat) W19 (under front passenger's seat) X55/3-c5 X55/4-c5
POWER TOP/SUNROOF Power Top/Sunroof Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Power Top/Sunroof Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 29 (+) 30g Can b h Can b l Computer data Computer data lines system Fuse 10a Fuse 30a Gnd Hall sensor 1 Hall sensor 2 Hot w/ circuit 30g relay energized Lin Lines system Mot(+) Motor Overhead control panel control unit Panoramic sliding roof control module (front center of roof) Panoramic sliding roof control unit Panoramic sliding roof hall sensor 1 Panoramic sliding roof hall sensor 2 Panoramic sliding roof motor Panoramic sliding roof roller sun blind drive unit Red Sig 1 Sig 2 Sliding roof switch Vehicle interior fuse box (right front footwell) W78 (center front of roof)
POWER WINDOWS Power Windows Wiring Diagram (1 of 2) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Power Windows Wiring Diagram (1 of 2) for Mercedes-Benz CLA250 4Matic 2014: 32 (+) 58d Can b h Can b l Computer data lines system Driver side power window & outside mirror adjustment switch Engine compartment fuse & relay module (left side engine compt) Fuse 30a Fuse 40a Gnd Hot at all times Interior lights system Left front door control module Left front door power window motor Left front power window switch Left rear power window switch Lin b5 Mot Pnk Pw2 Rear side window child safety lock switch Right front power window switch Right rear power window switch S13 Sam control unit (left end of dash) Sig Tfh o Tfh s Vehicle interior fuse box (right front footwell) W15/2 (left front footwell) W3/2 (left rear of engine compt) X35/1-c1 Power Windows Wiring Diagram (2 of 2) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Power Windows Wiring Diagram (2 of 2) for Mercedes-Benz CLA250 4Matic 2014: 28 (+) 58d Can b h Can b l Computer Data lines Fuse 30a Gnd Hot at all times Hs 1 Left rear door power window motor Left rear power window switch Mot Passenger side Power window switch Right front door control module Right front door power window motor Right rear door power window motor Right rear power window switch Sig System Vehicle interior fuse box (right front footwell) W15/1 (right front footwell) X100/3-c1 X100/4-c1 X35/2-c1 X35/3-c1 X35/4-c1
RADIO COMAND Actuation Wiring Diagram, Early Production (1 of 3) for Mercedes-Benz CLA250 4Matic 2014 List of elements for COMAND Actuation Wiring Diagram, Early Production (1 of 3) for Mercedes-Benz CLA250 4Matic 2014: 63 (+) (center front of roof) hands-free system microphone (under center of hat shelf) (if equipped) emergency call system control unit (under left front of center console) w12 30g As (+) As (-) As gnd As l As n (+) As n (-) As r Aux gnd Aux l Aux r Can a h Can a l Can b h Can b l Comand control unit (w/o audio 20) radio (w/ audio 20) Comand fan motor (center of dash) Computer data lines system Cradle navigation module Diag Gnd Hsd Iphone drive kit control unit (w/ iphone drive kit 4/4s & 5) Left front door speaker (w/o sound system) Left mirror triangle tweeter (w/o sound system) Left rear door speaker (w/o sound system) Lvds (+) Lvds (-) Mf (+) Mf (-) Mobile phone contact plate Mos Most data bus circuit Most in Most out Most ws Navigation module (right end of dash) Nca Pnd Pnk Red Right front door speaker (w/o sound system) Right mirror triangle tweeter (w/o sound system) Shield Tel set Tel st Tel ws V sig W/ audio/comand display W/0 audio/comand display W/o sound system X1/61-c1 X1/61-c2 X100/1-c1 X100/2-c1 X35/1-c1 X35/2-c1 X35/3-c1 X39/37-c2 COMAND Actuation Wiring Diagram, Early Production (2 of 3) for Mercedes-Benz CLA250 4Matic 2014 List of elements for COMAND Actuation Wiring Diagram, Early Production (2 of 3) for Mercedes-Benz CLA250 4Matic 2014: 55 (under left front of center console) w12 30g 58d Accept/ terminate phone call button Audio/comand control panel Audio/comand controller Audio/comand display Back & voice control system off button Back button Button + & - for setting specific functions & volume control C3 s Can a h Can a l Can d h (pins: 12 to 18 not used) Can d l (pins: 3 to 9 not used) Can e h Can e l Computer data lines system Delete button Fuse 1a Fuse 30a Fuse 5a Fuse 7.5a Gnd Hot at all times Hot w/ circuit 15 relay energized Hot w/ circuit 30g relay energized Left multi-function steering wheel button group Lvds (+) Lvds (-) Mute button Nca Ok button Pnk Red Reset & back button Right multi-function steering wheel button group Right rear door speaker (w/o sound system) Scroll forward/ back button Shield Sig Steering column module control unit (top of steering column) Steering wheel clock spring contact (part of steering column module) Steering wheel electronics (in steering wheel) System selection button Telematics services communication module V bus Vehicle interior fuse box (right front footwell) Voice control system on button W/ automatic lane detection W/ iphone drive kit control unit W/o iphone drive kit control unit W12 (under left front of center console) X138/1-c1 X35/4-c1 COMAND Actuation Wiring Diagram, Early Production (3 of 3) for Mercedes-Benz CLA250 4Matic 2014 List of elements for COMAND Actuation Wiring Diagram, Early Production (3 of 3) for Mercedes-Benz CLA250 4Matic 2014: 55 (+) (base of left "c" pillar) fm 2 & dab antenna amplifier (center of luggage compt lid) (if equipped) backup camera (center rear of roof) fm, am & cl (zv) antenna amplifier (under right side of hatshelf) global positioning system antenna splitter A fm1 am A fm1/am A fm2 x A gps Afm1 An1 Bt kom s shield Data rx Data tx Dedicated short-range communications control unit (if equipped) Dsr Dsrc toll collection system Electronic toll collection control unit (if equipped) Etc toll collection system Etc/dsrc antenna Fm2 Gnd Gps Kom Multi-function antenna Nca Pnk Radio (w/ audio 20) comand control unit (w/o audio 20) Res Rvh S shield S1 shield S2 shield Shield Tv digital tuner Usb Usb (+)5v Usb d(+) Usb d(-) Usb electrical connector Usb gnd Vehicle information & communication system (vics) control unit (if equipped) Vid Vid c Vid c c2 Vid y W/ multi-function antenna W/o multi-function antenna W12 (under left front of center console) X a gps X1 a fm2 X137/1-c1 X137/1-etc X137/1-vic X138/1-c2 COMAND Actuation Wiring Diagram, Late Production (1 of 3) for Mercedes-Benz CLA250 4Matic 2014 List of elements for COMAND Actuation Wiring Diagram, Late Production (1 of 3) for Mercedes-Benz CLA250 4Matic 2014: 56 (+) 1a1 1a2 30g As (+) As (-) Can a h Can a l Can b h Can b l Comand control unit (w/o audio 20) radio (w/ audio 20) Comand fan motor (center of dash) Computer data lines system Diagnostic connector (under left side of dash) Emergency call system control unit (if equipped) (under center of hat shelf) Eth (+) Eth (-) Eth ws Fuse 5a Fuse 7.5a Gnd Hands-free system microphone (center front of roof) Hot w/ circuit 30g relay energized Left front door speaker (w/o sound system) Left mirror triangle tweeter (w/o sound system) Left rear door speaker (w/o sound system) Lvds (+) Lvds (-) Mf (+) Mf (-) Mobile phone contact plate Most data bus circuit Most in Most out Most ws Nca Pnk Red Right front door speaker (w/o sound system) Right mirror triangle tweeter (w/o sound system) Shield Tel set Tel st Tel ws Usb (+)5v V sig Vehicle interior fuse box (right front footwell) W/o sound system W12 (under left front of center console) W3/1 (right front wheelwell) X100/1-c1 X100/2-c1 X35/1-c1 X35/2-c1 X35/3-c1 X39/37-c2 COMAND Actuation Wiring Diagram, Late Production (2 of 3) for Mercedes-Benz CLA250 4Matic 2014 List of elements for COMAND Actuation Wiring Diagram, Late Production (2 of 3) for Mercedes-Benz CLA250 4Matic 2014: 47 (under left front of center console) w12 30g 58d Accept/ terminate phone call button Audio/comand control panel Audio/comand controller Audio/comand display Back & voice control system off button Back button Button + & - for setting specific functions & volume control Can a h Can a l Can e h Can e l Computer data lines system Delete button Fuse 5a Fuse 7.5a Gnd Hot w/ circuit 30g relay energized Left multi-function steering wheel button group Lvds (+) Lvds (-) Multimedia connection unit Mute button Nca Ok button Pnk Red Reset & back button Right multi-function steering wheel button group Right rear door speaker (w/o sound system) S c1 Scroll forward/ back button Shield Sig Steering column module control unit (top of steering column) Steering wheel clock spring contact (part of steering column module) Steering wheel electronics (in steering wheel) System selection button Vehicle interior fuse box (right front footwell) Voice control system on button W/ automatic lane detection W12 (under left front of center console) X138/1-c1 X138/4-2a X35/4-c1 COMAND Actuation Wiring Diagram, Late Production (3 of 3) for Mercedes-Benz CLA250 4Matic 2014 List of elements for COMAND Actuation Wiring Diagram, Late Production (3 of 3) for Mercedes-Benz CLA250 4Matic 2014: 42 (+)12v (base of left "c" pillar) fm 2 & dab antenna amplifier (center rear of roof) fm, am & cl (zv) antenna amplifier (under right side of hat shelf) global positioning system antenna splitter A fm1 am A fm1/am A fm2 x A gps Afm1 Aux Backup camera (if equipped) (center of luggage compt lid) Dat Dedicated short-range communications control unit (if equipped) Etc/dsrc antenna Fm2 Gnd Multi-function antenna Nca Pnk Radio (w/ audio 20) comand control unit (w/o audio 20) S1 shield S2 shield S31 Shield Tuner unit Usb (+)5v Usb d(+) Usb d(-) Usb gnd Vds (+) Vds (-) Vehicle information & communication system (vics) control unit (if equipped) Vid W/ multi-function antenna W/o multi-function antenna Wla Wlan antenna X a gps s shield X a wlan s shield X bt kom s shield X1 a fm2 X137/1-vic Digital Radio Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Digital Radio Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 18 (right side of luggage compt) w7 30g A dabii A dabl Dab Digital audio broadcasting control unit Fm 2 & dab antenna amplifier (base of left "c" pillar) Fuse 5a Hot w/ circuit 30g relay energized Most data bus circuit Most in Most out Most ws Nca Shd Shield Vehicle interior fuse box (right front footwell) X a dabii Iphone Drive Kit Control Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Iphone Drive Kit Control Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 37 (right front footwell) w15/1 (under left front of center console) w12 30g A gps As (+) As (-) As gnd As l As r Audio/comand display Aux gnd Aux l Aux r Can a h Can a l Can b h Can b l Center instrument panel speaker Comand control unit (w/o audio 20) radio (w/ audio 20) Computer data lines system Fuse 30a Fuse 5a Fuse 7.5a Gnd Hot at all times Hot w/ circuit 30g relay energized Hsd Iphone drive kit control unit Iphone drive kit control unit electrical connection Lvds (+) Lvds (-) Multi-function antenna Nca Red Shield Sound system amplifier control unit (right side of luggage compt) Vehicle interior fuse box (right front footwell) MOST Data Bus Wiring Diagram, Early Production for Mercedes-Benz CLA250 4Matic 2014 List of elements for MOST Data Bus Wiring Diagram, Early Production for Mercedes-Benz CLA250 4Matic 2014: 9 (w/ sirius satellite radio) satellite digital audio radio (sdar) control unit Comand control unit (w/o audio 20) radio (w/ audio 20) Digital audio broadcasting control unit (w/ digital radio) Mos Most in Most out Most ws Sound system amplifier control unit (w/ sound system) (right side of luggage compt) Tv digital tuner (w/ tv tuner) MOST Data Bus Wiring Diagram, Late Production for Mercedes-Benz CLA250 4Matic 2014 List of elements for MOST Data Bus Wiring Diagram, Late Production for Mercedes-Benz CLA250 4Matic 2014: 11 1a2 Comand control unit (w/o audio 20) radio (w/ audio 20) Mos Most in Most out Most ws S11 Sound system amplifier control unit (w/ sound system) (right side of luggage compt) Tuner unit (w/ tv tuner, sirius satellite radio & digital radio) W/ sound system W/o sound system Satellite Radio Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Satellite Radio Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 14 (right side of luggage compt) w7 30g A sdar Fuse 5a Hot w/ circuit 30g relay energized Most data bus circuit Most in Most out Most ws Multi-function antenna Nca Satellite digital audio radio (sdar) control unit Shield Vehicle interior fuse box (right front footwell) Sound Amplifier Wiring Diagram (1 of 2) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Sound Amplifier Wiring Diagram (1 of 2) for Mercedes-Benz CLA250 4Matic 2014: 24 As (+) As (-) Center instrument panel speaker Emergency call system control unit (w/ emergency call/assistance system) (under center of hat shelf) Fuse 40a Hot w/ circuit 30g relay energized Iphone drive kit control unit (w/ iphone drive kit 4/45 & 5) Left rear surround speaker Most Most data bus circuit Most in Most out Most ws Nca Pnk Red Right rear surround speaker S23 Sound system amplifier control unit (right side of luggage compt) Tel set Vehicle interior fuse box (right front footwell) W/ iphone drive kit 4/4s & 5 W/o iphone drive kit 4/4s W7 (right side of luggage compt) Sound Amplifier Wiring Diagram (2 of 2) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Sound Amplifier Wiring Diagram (2 of 2) for Mercedes-Benz CLA250 4Matic 2014: 20 Bass speaker Left front door speaker Left mirror triangle tweeter Left rear door speaker Left rear door tweeter Nca Pnk Red Right front door speaker Right mirror triangle tweeter Right rear door speaker Right rear door tweeter X100/1-c1 X100/2-c1 X100/3-c1 X100/4-c1 X35/1-c1 X35/2-c1 X35/3-c1 X35/4-c1 TV Tuner Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for TV Tuner Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 21 (right side of luggage compt) w7 30g A tv1 A tv2 Fuse 5a Hot w/ circuit 30g relay energized Mos Most data bus circuit Most in Most out Most ws Nca Radio (w/ audio 20) comand control unit (w/o audio 20) Shield Tv 1 antenna amplifier Tv 2 antenna amplifier Tv 3 antenna amplifier Tv digital tuner Vehicle interior fuse box (right front footwell) Vid c Vid y Tuner Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Tuner Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 38 (right side of luggage compt) w7 30g A dabiii A dabl A sdar A tv1 A tv2 A tv3 Dab Fm 2 & dab antenna amplifier (w/ digital radio) (base of left "c" pillar) Fuse 5a Gnd Hot w/ circuit 30g relay energized Most data bus circuit Most in Most out Most ws Multi-function antenna (w/ sirius satellite radio) Nca Radio (w/ audio 20) comand control unit (w/o audio 20) S11 S21 S22 S23 S31 S33 Shield Shield a sdar Tuner unit Tv 1 antenna amplifier (w/ tv tuner) Tv 2 antenna amplifier Tv 3 antenna amplifier (w/ tv tuner) Vds (+) Vds (-) Vehicle interior fuse box (right front footwell) W/ digital radio W/ tv tuner W/o digital radio nca
SHIFT INTERLOCK Shift Interlock Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Shift Interlock Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 26 (left front footwell) w15/2 30l Can-e h Can-e l Computer data lines system Electric parking brake control unit (center rear of luggage compt) Electric parking brake switch Fuse 30a Fuse 5a Hot at all times Hot w/ circuit 15 relay energized Interior lights system Left electric parking brake actuator motor (on left rear brake caliper assembly) Motor Nca Red Right electric parking brake actuator motor (on right rear brake caliper assembly) Sw-1 Sw-3 Sw-4 Sw-6 Vehicle interior fuse box (right front footwell) W7 (right side of luggage compt) W7/1 (right rear of luggage compt) X62/32-c1 X62/33-c1
STARTING/CHARGING Charging Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Charging Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 30 (right front footwell) eco start/stop function additional battery relay Additional battery Alternator Can b h Can b l Can e h Can e l Computer data lines system Decoupling relay Front electrical prefuse box (left side of engine compt) Fuse 10a Fuse 200a Fuse 300a Hot w/ decoupling relay energized Instrument cluster K114 Lin Lin c1 Me-sfi (me) control unit (left front of engine compt) On board electrical system battery Pyrofuse Red Sam control unit (left end of dash) Starter Uh1 Vehicle interior fuse box (right front footwell) W10 (left side of engine compt) W15/1 (right front footwell) W83/2 (under right front of center console) X4/48-c1 Starting Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Starting Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 28 58km Can b h Can b l Can c h Can c l Can e h Can e l Charging circuit Computer data lines system Dual clutch transmission fully integrated transmission control controller unit (in transmission) Electronic ignition switch control unit (left center of dash) Engine compartment fuse & relay module (left side engine compt) Fuse 25a Hot w/ circuit 15 relay energized Lin Me-sfi (me) control unit (left front of engine compt) Mr1 Mr2 On board electrical system battery Pyrofuse Red Sam control unit (left end of dash) Starter Starter circuit relay Uh1 W10 (left side of engine compt) W3/2 (left rear of engine compt) X26-c1
SUPPLEMENTAL RESTRAINTS Emergency Seat Belt Tensioners Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Emergency Seat Belt Tensioners Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 14 30g Can e h Can e l Computer data lines system Fuse 44 40a Fuse 45 40a Hot w/ circuit 30g relay energized Left front reversible emergency tensioning retractor (base of left front "b" pillar) Right front reversible emergency tensioning retractor (base of right front "b" pillar) S13 S14 Vehicle interior fuse box (right front footwell) W18 (under driver's seat) W19 (under front passenger's seat) Supplemental Restraint Wiring Diagram (1 of 4) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Supplemental Restraint Wiring Diagram (1 of 4) for Mercedes-Benz CLA250 4Matic 2014: 34 (in center rear seat belt buckle assembly) center rear seat belt buckle switch (in left rear seat belt buckle assembly) left rear seat belt buckle switch (in right rear seat belt buckle assembly) right rear seat belt buckle switch Automatic child seat recognition air bag off ind lamp C sig Computer data lines system Driver-side anchor fitting tensioner squib Front passenger anchor fitting tensioner squib Front passenger seat occupied recognition & acsr (in front passenger's seat cushion) Fuse 7.5a Gnd Hot w/ circuit 15r1 socket relay energized Left rear emergency tensioning retractor squib (base of left rear "c" pillar) Lin e2 Me-sfi (me) control unit (left front of engine compt) Pnk Ps (+) Ps (-) Pyrofuse (on battery positive (+) post) Recognition Right rear emergency tensioning retractor squib (base of right rear "c" pillar) Sam control unit (left end of dash) Sig Upper panel control unit Vehicle interior fuse box (right front footwell) W/ automatic child seat recognition W/o automatic child seat W26 (under right front of center console) Weight sensing system (wss) control unit X25/13-c1 X55/3-c1 X55/4-c1 Zp (+) Zp (-) Supplemental Restraint Wiring Diagram (2 of 4) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Supplemental Restraint Wiring Diagram (2 of 4) for Mercedes-Benz CLA250 4Matic 2014: 16 (in steering wheel) (w/ automatic lane detection) driver air bag squib 1 Driver air bag squib 2 (w/ automatic lane detection) (in steering wheel) Left active engine hood squib (if equipped) Left front bumper pedestrian protection sensor (w/ active engine hood) (behind left side of front bumper) Left rear door pressure sensor (w/ left & right rear side bag) (in left rear door) Left rear side bag squib (w/ left & right rear side bag) (outer edge of left rear seat back) Nca Pnk Red Right active engine hood squib (if equipped) Right front bumper pedestrian protection sensor (w/ active engine hood) (behind right side of front bumper) Right rear door pressure sensor (w/ left & right rear side bag) (in right rear door) Right rear side bag squib (w/ left & right rear side bag) (outer edge of right rear seat back) X25/2-c1 X35/3-c1 X35/4-c1 Supplemental Restraint Wiring Diagram (3 of 4) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Supplemental Restraint Wiring Diagram (3 of 4) for Mercedes-Benz CLA250 4Matic 2014: 27 (front passenger lower side of dash) front passenger knee bag squib Can-b h Can-b l Computer data lines system Driver knee bag squib (knee bag) (driver lower side of dash) Driver seat belt buckle restraint system switch (in driver seat belt buckle assembly) Driver seat position detection switch Front passenger air bag squib 1 (right side of dash) Front passenger air bag squib 2 (right side of dash) Front passenger seat belt buckle restraint system switch (in front passenger seat belt buckle assembly) Front passenger seat position detection switch Instrument cluster Left front door pressure sensor (in left front door) Red Right front door pressure sensor (in right front door) Seat belt warning lamp ind Steering column module control unit (top of steering column) Steering wheel clock spring contact (part of steering column module) W15/1 (right front footwell) X100/1-c1 X100/2-c1 X35/1-c2 X35/2-c2 X55/3-c1 X55/4-c1 Zp (+) Zp (-) Supplemental Restraint Wiring Diagram (4 of 4) for Mercedes-Benz CLA250 4Matic 2014 List of elements for Supplemental Restraint Wiring Diagram (4 of 4) for Mercedes-Benz CLA250 4Matic 2014: 32 (+) (base of left "b" pillar) left side bag sensor (base of right "b" pillar) right side bag sensor (under right front of center console) 15r1 30g C sig Can e h Can e l Computer data lines system Driver etr (gus) squib (base of driver "b" pillar) Driver side bag squib (outer edge of driver seat back) Emergency call system control unit (if equipped) (under center of hat shelf) Front passenger etr (gus) squib (base of front passenger "b" pillar) Front passenger seat occupied recognition (if equipped) (in front passenger's seat cushion) Front passenger side bag squib (outer edge of front passenger seat back) Fuse 7.5a Gnd Hot w/ circuit 30g relay energized Left frontal acceleration sensor (behind left end of front bumper) Left window bag squib (in roof rail above left rear door) Right frontal acceleration sensor (behind right end of front bumper) Right window bag squib (in roof rail above right rear door) Sig Vehicle interior fuse box (right front footwell) W26 W26 (under right front of center console) X25/13-c1 X55/3-c1 X55/4-c1 Zp (+) Zp (-)
TRANSMISSION A/T Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for A/T Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 73 (+) (-) (left rear of engine compt) w11 + 5v + u + v + w 30g 58ko Aux (+) Can b h Can b l Can c h Can c l Can e h Can e l Clutch k1 control valve Clutch k1 pressure sensor Clutch k2 control valve Clutch k2 pressure sensor Clutch temperature sensor Computer data lines system Direct select lever Double clutch transmission drive shaft rpm sensor Double clutch transmission hollow shaft rpm sensor Dual clutch transmission fully integrated transmission control unit (in transmission) Electric auxiliary oil pump Electronic ignition switch control unit (left center of dash) Engine compartment fuse & relay module (left side of engine compt) Engine speed rpm sensor Fuse 10a Fuse 25a Fuse 5a Gear control control valve, 1st/5th gear Gear control control valve, 2nd/4th gear Gear control control valve, 3rd/7th gear Gear control control valve, 6th/r gear Gear cylinder pressure control valve Gear ind Gnd Hall sensor 1 Hall sensor 2 Hall sensor 3 Hot at all times Hot w/ circuit 87m relay energized Instrument cluster Me-sfi (me) control module (left front of engine compt) Motor Mr2 Nca Park pawl control unit circuit 87 relay Park pawl lift solenoid Park pawl position sensor Park pawl switchover valve Prnd Red S1 sig S10 S2 sig S3 sig Shift fork position sensor 1 Shift fork position sensor 2 Shift fork position sensor 3 Shift fork position sensor 4 Sig Steering column module control unit (top of steering column) System pressure control valve Transmission mode display Transmission oil cooling coolant circulation pump (bottom front of transmission) Vehicle interior fuse box (right front footwell) W12 (under left front of center console) W3/2 (left rear of engine compt) X25/13-c1 AWD Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for AWD Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 17 (+) All-wheel drive control unit All-wheel drive solenoid valve (on rear differential assembly) Can c h Can c l Computer data lines system Early production Fuse 10a Fuse 5a Gnd Hot at all times Hot w/ circuit 15 relay energized Late production Vehicle interior fuse box (right front footwell) W18 (under driver's seat) X36/2-c2 X36/2-c3
TRUNK, TAILGATE, FUEL DOOR Trunk Pull-Down Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Trunk Pull-Down Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 45 (+) (left side of luggage compt) w6 58d As_(+) As_(-) Can b h Can b l Central locking motor Computer data lines system Driver trunk lid/ liftgate control button Fuel filler/ socket flap central locking actuator Fuse 30a Fuse 40a Gnd Hot at all times Left front door control module Mot Nca Red S sig S26 Sam control unit (left end of dash) Sig Sig1 Sig2 S_sig Tailgate lid/ liftgate control electric motor Tailgate lid/ liftgate control hall sensor Tailgate lid/liftgate control drive unit Trunk lid emergency opening switch Trunk lid release button Trunk lid/liftgate central locking motor Trunk lid/liftgate control unit Trunk lid/liftgate control warning buzzer Trunk lid/liftgate external operation switch Trunk lid/liftgate locking element Trunk lid/liftgate locking pawl switch Trunk lid/liftgate locking rotary tumbler switch Vehicle interior fuse box (right front footwell) W/ automatic rear-end door W/o automatic rear-end door W15/2 (left front footwell) W6 (left side of luggage compt) W8/4 X35/1-c1
WARNING SYSTEMS Seat Belt Warning Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Seat Belt Warning Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 47 30g Brake fluid level switch (on brake fluid reservoir) Brake system warning lamp Can e h Can e l Can-b h Can-b l Computer data lines system Driver seat belt buckle restraint system switch (in driver seat belt buckle assembly) Electric parking brake control unit (center rear of luggage compt) Electric parking brake switch Engine compartment fuse & relay module (left side engine compt) Fuse 10a Fuse 30a Fuse 40a Fuse 7.5a Gnd Hot at all times Hot w/ circuit 30g relay energized Instrument cluster Interior lights system Left front door control unit Left front door lock Left front door rotary tumbler switch Multi-function display Nca Parking brake indicator lamp Pw2 Red Right front brake wear sensor (on right front brake caliper assembly) S13 Sam control unit (left end of dash) Seat belt warning lamp Sig Sw 1 Sw 3 Sw 4 Sw 6 Uh1 Uh2 Vehicle interior fuse box (right front footwell) W15/2 (left front footwell) W3/1 (right front footwell) W3/2 (left rear of engine compt) W7 (right side of luggage compt) X55/3-c1 X88/12-c1 Tire Pressure Monitoring Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Tire Pressure Monitoring Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 19 Can e h Can e l Can h Can l Computer data lines system Fuse 10a Fuse 5a Hot at all times Hot w/ circuit 30g relay energized Instrument cluster Left front tire pressure sensor (in left front wheel assembly) Left rear tire pressure sensor (in left rear wheel assembly) Right front tire pressure sensor (in right front wheel assembly) Right rear tire pressure sensor (in right rear wheel assembly) Tire pressure monitor control unit (under rear of vehicle) Tire pressure monitor warning lamp Vehicle interior fuse box (right front footwell) W15/2 (left front footwell) W19 (under front passenger's seat)
WIPER/WASHER Headlamp Washer Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Headlamp Washer Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 29 (+) 30g Can b h Can b l Can e h Can e l Combination switch Computer data lines system Fuse 10a Fuse 30a Fuse 5a Headlamp cleaning system pump Hot at all times Hot w/ circuit 30g relay energized Instrument cluster Liftgate windshield washer system switch Pw1 Pw2 Red S18 Sam control unit (left end of dash) Steering column module control unit (top of steering column) Uh1 Vehicle interior fuse box (right front footwell) W/ automatic lane detection W12 (under left front of center console) W3/2 (left rear of engine compt) Windshield washer system switch Wiper switch Wiper/Washer Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014 List of elements for Wiper/Washer Wiring Diagram for Mercedes-Benz CLA250 4Matic 2014: 52 (+) (center front of roof) w78 30g 87a 87b Can b h Can b l Can e h Can e l Combination switch Computer data lines system Decoupling relay (w/ start/ stop system) Engine compartment fuse & relay module (left side of engine compt) Front electrical prefuse box (left side of engine compt) Ft r e a Ft r st Fuse 10a Fuse 30a Fuse 5a Gnd Hot at all times Hot w/ circuit 30g relay energized Instrument cluster Liftgate windshield washer system switch Lin b13 Mot Mr1 Nca Overhead control panel unit Pw2 Rain/light sensor (w/ rain sensor) light sensor (w/o rain sensor) (integral to interior rearview mirror base assembly) Red S18 Sam control unit (left end of dash) Sig Spray nozzle heater (w/ heated windshield washer system) (rear side of engine compt lid) Spray nozzle hose heater (on washer fluid reservoir) Steering column control unit (top of steering column) Uh2 Vehicle interior fuse box (right front footwell) W/ automatic lane detection W12 (under left front of center console) W3/2 (left rear of engine compt) Windshield washer system pump (on washer fluid reservoir tank) Windshield washer system switch Windshield washer system washer fluid level switch (on washer fluid reservoir) Windshield wiper on/off relay Wiper level 1/2 relay Wiper motor (left rear of engine compt) Wiper switch Wmv pp X88/7-c1
