Diagram sections — 18 (58 total)
AIR CONDITIONING ANTI-LOCK BRAKES ANTI-THEFT BODY CONTROL MODULES COMPUTER DATA LINES COOLING FAN CRUISE CONTROL DEFOGGERS ELECTRONIC POWER STEERING ELECTRONIC SUSPENSION ENGINE ACCESSORIES ENGINE PERFORMANCE EXTERIOR LIGHTS GROUND DISTRIBUTION HEADLIGHTS HORN INSTRUMENT CLUSTER INTERIOR LIGHTS
AIR CONDITIONING Automatic A/C Wiring Diagram, with Thermotronic (1 of 3) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Automatic A/C Wiring Diagram, with Thermotronic (1 of 3) for Mercedes-Benz C300 Sport 4Matic 2012: 41 (+) (-) (center console) rear blower motor +12v 12v Ac housing Air recirculation mode button Automatic air conditioning control & operating unit Blower motor Blower regulator Can b h Can b l Computer data lines system Data Data fond Evaporator temperature sensor (c-class: under right side of dash) (glk-class: right side dash) Front electrical prefuse box (right rear engine compt) Fuse 100a Fuse 50a Fuse 7.5a Gnd Hot at all times Hot w/ circuit-15 relay energized Hot w/ quiescent current cutout relay energized Lin b8 Mg1 Mr1 Ntc Rear sam control unit w/fuse & relay module (left side trunk/cargo area) Rear window heater button Red Sig Sun sensor (top center of dash) W/ eco start/stop function W/o eco start/stop function W15/5 (left front footwell) W15/7 (right front footwell) W18/3 (under driver seat) X18/35-c1 X18/35-c2 X18/40 Automatic A/C Wiring Diagram, with Thermotronic (2 of 3) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Automatic A/C Wiring Diagram, with Thermotronic (2 of 3) for Mercedes-Benz C300 Sport 4Matic 2012: 33 (if equipped) rear air outlet symbol illumination (right rear engine compt) emissions sensor 12v 58d Data Dew point sensor (c-class: right rear of engine compt) Diffuse flap actuator motor (c-class: upper center of heater system air circulation unit) (glk-class: hvac assembly) Fresh air/ recirculation air flap actuator motor (right side heater system air circulation unit) Front electrical prefuse box (c-class: at right rear engine compt) (glk-class: right rear engine compt) Fuse 150a Gnd Hot at all times Left blending air flap actuator (left side heater system air circulation unit) Left center air outlet symbol illumination Left center outlet flap actuator motor (c-class: lower left front of heater system air circulation unit) (glk-class: hvac assembly) Left defroster vent flap actuator motor (upper left side of heater system air circulation unit) Left front side air outlet symbol illumination Mr6 Nca Ptc heater booster Ram air flap actuator motor (c-class: upper right side of heater system air circulation unit) (glk-class: hvac assembly) Rear automatic air conditioning operating unit Red Right blending air flap actuator (right side heater system air circulation unit) Right center air outlet symbol illumination Right center outlet flap actuator motor (c-class: lower right front of heater system air circulation unit) (glk-class: hvac assembly) Right defroster vent flap actuator motor (upper left side of heater system air circulation unit) Right footwell flap actuator motor (c-class: lower right side of heater system air circulation unit) (glk-class: right side heater system air circulation unit Right front side air outlet symbol illumination W/ air outlet symbol illumination W15/5 (left front footwell) W15/9 (c-class: top of left kick panel) X18/35-c1 Automatic A/C Wiring Diagram, with Thermotronic (3 of 3) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Automatic A/C Wiring Diagram, with Thermotronic (3 of 3) for Mercedes-Benz C300 Sport 4Matic 2012: 47 (glk-class: behind radiator) combustion engine & a/c w/ integrated control fan motor (left front engine compt) purge control valve (left rear engine) coolant temperature sensor (right side steering column) interior temperature sensor (top center engine) me-sfi (me) control module 1.8l turbo 12v 3.0l & 3.0l flex fuel 3.5l & 3.5l flex fuel C13d C14m C17c C18m C21m C3m C4i C5c Coolant circulation pump (right side of engine compt) Coolant thermostat Engine controls system Front sam control unit w/ fuse & relay module (left rear of engine compt) Fuse 15a Fuse 7.5a Gnd Hot w/ engine circuit 87 relay energized Interior temperature sensor w/ integrated fan Left footwell flap actuator motor (c-class: lower left side of heater system air circulation unit) (g-class: hvac) assembly) Leus Ntc Nwg m2 Overhead control panel electronics (w/ overhead control panel w/o can) (c-class: center rear of trunk) Rear blend air flap actuator motor (c-class: lower left side of heater system air circulation unit) (glk-class: right side heater system air circulation unit) Red Refrigerant compressor (left front of engine) Refrigerant pressure sensor (bottom left side radiator condenser) Reg Sig Solid state Ths Tmot Usa W15/5 (left front footwell) W16/3 (left side engine compt) W16/4 (right side of engine compt) W9 (left front wheelhouse) X15/12 X26-c1 Automatic A/C Wiring Diagram, without Thermotronic (1 of 2) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Automatic A/C Wiring Diagram, without Thermotronic (1 of 2) for Mercedes-Benz C300 Sport 4Matic 2012: 47 (+) (-) +12v 12v 30g Ac housing Air distribution flap actuator (lower left side heater system air circulation unit) Air recirculation mode button Automatic air conditioning control & operating unit Blower motor Blower regulator Can b h Can b l Computer data lines system Defroster vent flap actuator motor (glk class: upper left side heater system air circulation unit) Evaporator temperature sensor (right side dash) Front electrical prefuse box (right rear engine compt) Fuse 100a Fuse 150a Fuse 50a Gnd Hot at all times Hot w/ quiescent current cutout relay energized Left blending air flap actuator (left side heater system air circulation unit) Left center air outlet symbol illumination Left front side air outlet symbol illumination Lin b8 Lin data Mg1 Mr6 Nca Ntc Ptc heater booster Rear window heater button Red Right blending air flap actuator (right side heater system air circulation unit) Right center air outlet symbol illumination Right front side air outlet symbol illumination Sig Sun sensor (top center dash) W/ air outlet symbol illumination W/ eco start/stop function W/o eco start/stop function W15/5 (left front footwell) W15/7 (right front footwell) W15/9 (c-class: top of left kick panel) X18/40 Automatic A/C Wiring Diagram, without Thermotronic (2 of 2) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Automatic A/C Wiring Diagram, without Thermotronic (2 of 2) for Mercedes-Benz C300 Sport 4Matic 2012: 57 (glk-class: behind radiator) combustion engine & a/c w/ integrated control fan motor (if equipped) rear air outlet symbol illumination (right side steering column) interior temperature sensor 1.8l turbo 12v 3.0l & 3.0l flex fuel 3.5l & 3.5l flex fuel C11c C13d C14i C14m C17c C18m C21m C22i C3m C5c C7i C8s Can-b h Can-b l Computer data lines system Coolant temperature sensor (left rear engine) Engine controls system Fresh air/ recirculation flap actuator motor (right side heater system air circulation unit) Front electrical prefuse box (right rear of engine compt) Front sam control unit w/ fuse & relay module (left rear of engine compt) Fuse 100a Fuse 15a Fuse 7.5a Gnd Hot at all times Hot w/ engine circuit 87 relay energized Interior humidity/ temperature sensor (if equipped) Interior temperature sensor w/ integrated fan Lues Me-sfi (me) control module (top center engine) Mr1 Nca Ntc Nwg m2 Overhead control panel electronics (w/ overhead control panel w/o can) Purge control valve (left front engine compt) Red Refrigerant compressor (left front of engine) Refrigerant pressure sensor (bottom left side radiator condenser) Reg Solid state Tmot Usa W15/5 (left front footwell) W16/5 (left rear engine compt) W9 (left front wheelhouse) X15/12 X18/35-c1 X226 X26-c1
ANTI-LOCK BRAKES Anti-lock Brakes Wiring Diagram for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Anti-lock Brakes Wiring Diagram for Mercedes-Benz C300 Sport 4Matic 2012: 84 (-) (under left side of dash) stop lamp switch +12v 1.8l 1.8l, 3.0l, 3.0l flex fuel & 3.5l glk-class 3.5l c-class & 3.5l flex fuel 30g Abs ind Bla Bls 12v Bls h Bls_l Bls_m Brake vacuum sensor (w/ eco start/stop function) C22i C2i C7i Can e h Can e l Can h h Can h l Can-e h Can-e l Computer data lines system Df hl m Df hl s Df hr m Df hr s Df vl m Df vl s Df vr m Df vr s Eco Eco 12v Electronic stability program control unit (left front of engine compt) Esp warning lamp ind Except 1.8l Front axle brake pressure sensor Front axle intake ball valve Front axle switch- over valve Front pressure sensor Front sam control module w/ fuse & relay module (left rear of engine compt) Fuse 25a Fuse 40a Fuse 5a Fuse 7.5a High pressure & return pump motor Hot at all times Hot in on or start Instrument cluster Left front axle rpm sensor (on left front steering knuckle assembly) Left front pressure regulator valve (hold) Left front pressure regulator valve (release) Left rear axle rpm sensor (left rear wheel hub assembly) Left rear pressure regulator valve (hold) Left rear pressure regulator valve (release) Nca Pml Pml 12v Pnk Power steering pump quantity control valve (if equipped) Rear axle intake ball valve Rear axle switch- over valve Rear pressure sensor Rear sam control module w/ fuse & relay module (left side of trunk/cargo area) Right front axle rpm sensor (on right front steering knuckle assembly) Right front pressure regulator valve (hold) Right front pressure regulator valve (release) Right rear axle rpm sensor (right rear wheel hub assembly) Right rear pressure regulator valve (hold) Right rear pressure regulator valve (release) Service brake ind lamp Sig Speed-sensitive power steering solenoid valve (if equipped) (on steering rack assembly) Ssk Taximeter electrical connector (if equipped) Traction system hydraulic unit W70 (left front of engine compt) X18/33 X26 X26-c1 X35/6 X35/6-c1 x35/6 Yaw rate, lateral & longitudinal acceleration sensor (under driver's seat) (premium)
ANTI-THEFT Anti-theft Wiring Diagram for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Anti-theft Wiring Diagram for Mercedes-Benz C300 Sport 4Matic 2012: 80 (c-class: integral to interior protection & tow-away protection control unit) (c-class: right side of trunk) (glk class: right side of cargo area/trunk) w7 (glk class: left rear cargo panel) (left rear of engine compt) front sam control module w/ fuse & relay module 100a 12v 15m 56ar 58d Anti-theft alarm system indicator lamp Ass led Ass off C11c C13d C16s C22i C7i C85 C8d Can-b h Can-b l Can-e h Can-e l Computer data lines system Emd Emergency call system control unit (glk class: center front of trunk/cargo area) (c-class: center front of trunk) Exterior lights system Fan relay module Front electrical prefuse box (right rear of engine compt) Function display Fuse Fuse 150a Fuse 17 13a Fuse 18 7.5a Fuse 7.5a Glk-class Horns system Hot at all times Hot w/ quiescent current cutout relay energized Info Info led Instrument cluster Instrument panel switch group Interior protection & tow-away protection control unit (if equipped) (glk class: front center interior roof) (c-class: center front of roof) Interior protection receiver Interior protection switch Irs led Irs-off Left engine hood contact switch (front left side of engine compt) Left interior protection transmitter Left rear window glass breakage sensor Lin 1 Lin b4 Mg1 Mr2 Multi- Nca Off Overhead control panel (w/o power glass tilting/sliding roof) (c-class: center rear of trunk) Rear sam control module w/ fuse & relay module (left side of trunk/cargo area) Rear window glass breakage sensor Red Right interior protection transmitter Right rear window glass breakage sensor Sos Sos led Stop function S_gb Towing sensor button W/ eco start/ stop function W/o eco start/ W15/5 (glk-class) (left front footwell) w16/3 (c-class) (left side of engine compt) W15/5 (left front footwell) W6/1 W7 (c-class: right side of trunk) (glk class: right side of cargo area/trunk) Ws led X143/3 X18/2 X18/37 X8/19
BODY CONTROL MODULES Front SAM Control Module Wiring Diagram (1 of 2) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Front SAM Control Module Wiring Diagram (1 of 2) for Mercedes-Benz C300 Sport 4Matic 2012: 80 (+) (or red) 12v 15r 30g 30z 49l 49r 58d 58l 58r 5v khd 87f 87m Air conditioning & engine controls systems Air conditioning system Anst Anti-theft system Bfs C-class C11c C12s C13d C16s C17c C18m C1m C20m C21m C3m C5c C6i C8s C9g Can e h Can e l Can-g h Can-g l Computer data lines system Crash Electronic power steering system Engine controls system Exterior lights system Front electrical prefuse box (at right rear of engine compt) Front sam control unit w/ fuse & relay module (left rear of engine compt) Fuse 100a Fuse 150a Fuse 60a Glk-class Gnd Headlights system Hot at all times Hot w/ quiescent current cutout relay energized Instrument cluster & power tops systems Instrument cluster system Interior lights system Khd Lin 1 Lin 2 Lin b8 Lwr Mg1 Mr2 Mr3 Mr4 Nca Ntc Pnk/red Power distribution system Red Rfl Sig Sound & navigation systems Starting/charging system Starting/charging systems Transmissions system W/ eco start/stop function W/o eco start/stop function W16/5 (left rear of engine compt) Wiper/washer system Front SAM Control Module Wiring Diagram (2 of 2) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Front SAM Control Module Wiring Diagram (2 of 2) for Mercedes-Benz C300 Sport 4Matic 2012: 63 (+) 15r 30g 30z 55l 55r 56al 56ar 56b l 56br 58d 87f 87m Air conditioning & cooling fans systems Air conditioning system Anti-lock brakes system Bbv hl Bbv hr C10t C14m C15m C19i C22i C2i C4i C7i Can b h Can b l Can c h Can c l Can d h Can d l Can e h Can e l Can g h Can g l Computer data lines system Crash Cruise control & electronic power steering systems Door locks & mirror systems Door locks system Ekp Engine controls system Exterior lights system Front sam control unit w/ fuse & relay module (left rear of engine compt) Gnd Headlights system Horns system Instrument cluster system Interior lights system Navigation system Pnk Pnk/red Power distribution system Red Sig Sound & navigation systems Sound systems Starting/charging system Str Transmissions system W16/3 (left side of engine compt) Wiper/washer system Rear SAM Control Module Wiring Diagram (1 of 2) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Rear SAM Control Module Wiring Diagram (1 of 2) for Mercedes-Benz C300 Sport 4Matic 2012: 78 (+) 15r 15r(1) 30g 31e 49r 58d 58l Air conditioning system Anst Anti-lock brakes system Anti-theft system Bla Bsl-l Bsl-r C1h C2g C30 C30g C3i C4hd C5h C6hd C8d C9i Can b h Can b l Computer data lines system Defogger system Door locks system Emd Engine controls system Exterior lights system Front electrical prefuse box (at right rear of engine compt) Fuel doors system Fuse 150a Fuse 80a Gss hl Gss hm Gss hr Headlights system Hfe Hot at all times Hot w/ quiescent current cutout relay energized Ig1 Instrument cluster Instrument cluster & anti-theft systems Instrument cluster system Interior lights system Lin Lin b4 Nsl-l Nsl-r Pnk Pnk/red Power distribution system Rear sam control unit w/ fuse & relay module (left side of trunk/cargo area) Red Rfl-l Rfl-r Rss aus Rss ein Seats system Sig Sl-l Sl-r Sound systems Starting/charging system System Tg l Tg r Trunk, tailgate, Trunk, tailgate, fuel doors system W/ eco start/stop function W/o eco start/stop function W7/1 (right side of cargo area/ trunk) Wiper/washer system Zv ant Rear SAM Control Module Wiring Diagram (2 of 2) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Rear SAM Control Module Wiring Diagram (2 of 2) for Mercedes-Benz C300 Sport 4Matic 2012: 35 (+) (-) (right side of cargo area/trunk) w7/1 15r 15r(1) 15r(2) 30g C11t C12i C13a C14i C15h C1or C7i Computer data lines system Cruise control system Door locks system Electronic suspension & electronic power steering systems Engine accessories system Exterior lights system Memory system Navigation & cruise control systems Navigation & sound systems Navigation system Pnk/red Power distribution system Power windows system Rear sam control unit w/ fuse & relay module (left side of trunk/cargo area) Red Seats system Sound system Sound systems Trunk, tailgate, fuel doors system W7 (right side of cargo area/trunk) Warning systems
COMPUTER DATA LINES Data Link Connector Wiring Diagram for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Data Link Connector Wiring Diagram for Mercedes-Benz C300 Sport 4Matic 2012: 13 (under left side of dash) diagnostic connector (dlc) 31e C15h C19i C22i Can-d h Can-d l Front sam control unit w/ fuse & relay module (left rear of engine compt) Fuse 7.5a Hot at all times Power distribution system Rear sam control unit w/ fuse & relay module (left side trunk/cargo area) W15/5 (left front footwell) High/Low Bus Wiring Diagram (1 of 4) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for High/Low Bus Wiring Diagram (1 of 4) for Mercedes-Benz C300 Sport 4Matic 2012: 33 (right front footwell) w15/8 Audio/comand control panel Audio/comand display C-class C10 C11 C12 C13 Can-a h Can-a l Can-c h Can-c l Can-g h Can-g l Drive train can voltage distributor electrical connector Dvd player (w/ tv & video in rear) Electronic selector level module control module (a/t) (under center console) Fuel pump control module (under right rear seat) Fully integrated transmission control unit (c-class: on fully integrated transmission control control unit) Glk-class Headlamp control unit Left front headlamp unit (w/ xenon lamps) Left rear display (w/ tv & video in rear) Left xenon light control unit Navigation module Right front headlamp unit (w/ xenon lamps) Right rear display (w/ tv & video in rear) Right xenon light control unit Telematics can voltage distributor electrical connector Transmission oil auxiliary pump control unit W15/6 (left front footwell) X55/3-c7 X5514-c7 High/Low Bus Wiring Diagram (2 of 4) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for High/Low Bus Wiring Diagram (2 of 4) for Mercedes-Benz C300 Sport 4Matic 2012: 50 (left front footwell) w15/6 Automatic air conditioning control & operating unit (2 & 3 zones thermatic) C10 C10t C11 C12 C13 C18m C19i C20m C21m C22i C2i C4i C5h C9i Can-a h Can-a l Can-b h Can-b l Can-c h Can-c l Can-d h Can-d l Can-e h Can-e l Can-g h Can-g l Comand control unit Diagnostic connector (dlc) (under left side dash) Driver seat control unit (c-class: under driver's seat) Emergency call system control unit (w/ teleaid emergency call system) (center front of trunk/cargo area) Front sam control unit w/ fuse & relay module (left rear engine compt) Left front door control unit (c-class: front of left front door) Left rear door control unit (c-class: rear of left rear door) Left vehicle floor interior can voltage distributor electrical connector Overhead control panel control module Panoramic sliding roof control module (left front of roof) Radio Rear sam control unit w/ fuse & relay module (left side of trunk/cargo area) Right front door control unit (c-class: front of right front door) Right rear door control unit (c-class: rear of right rear door) Trailer recognition control module (glk-class: right rear cargo area) W/ audio 20 radio W/ overhead control panel w/ can W/ panoramic sliding roof W/o audio 20 radio X204 X35/3 X35/4 High/Low Bus Wiring Diagram (3 of 4) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for High/Low Bus Wiring Diagram (3 of 4) for Mercedes-Benz C300 Sport 4Matic 2012: 36 Backup camera control unit (w/ backup camera) C-class C10 C11 C12 C13 Can-b h Can-b l Can-e h Can-e l Can-e l electrical power steering control unit Can-h h Can-h l Electro hydraulic power steering Front passenger seat control unit (c-class: under front passenger's seat) Glk-class Instrument cluster Keyless go control unit (if equipped) (glk-class: right side trunk/cargo area) (c-class: right side trunk) Left front reversible emergency tensioning retractor (if equipped) (base of left front "b" pillar) Multi-function camera Parktronic control unit (if equipped) (left front footwell) Pressure monitor Right vehicle floor interior can voltage distributor electrical connector Stationary heater unit (if equipped) (c-class: front of left front wheelwell) (glk-class: right front of engine compt) Steering column module control unit Tailgate control unit (w/ automatic tailgate) Tire pressure monitor control unit (if equipped) (glk-class: left side of trunk/cargo area) (c-class: spare wheelwell) Vehicle floor chassis can voltage distributor electrical connector Video & radar sensor system control unit (if equipped) W/ multifunction camera W/ tire W/ video & radar sensor system control unit W/o multifunction camera W15/6 (left front footwell) Weight sensing system control unit (if equipped) (under front passenger's seat) X55/4-c2 High/Low Bus Wiring Diagram (4 of 4) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for High/Low Bus Wiring Diagram (4 of 4) for Mercedes-Benz C300 Sport 4Matic 2012: 23 (right front footwell) 1.8l (turbo) Adaptive damping system control unit (w/ adaptive damping system & esp) C-class Can-b h Can-b l Can-c h Can-c l Can-e h Can-e l Can-e l steering column module control unit (c-class) (top of steering column) Can-h h Can-h l Distronic electric controller unit (if equipped) (c-class: center of front grille) Electronic ignition switch control unit Electronic stability program control unit (left front engine compt) Electronic stability program control unit (w/ esp & w/o adaptive damping system) (left front of engine compt) Except 1.8l (turbo) Instrument cluster (c-class) Me-sfi (me) control module (top center of engine) Right front reversible emergency tensioning retractor (if equipped) (base of right front "b" pillar) Vehicle dynamics can voltage distributor electrical connector Yaw rate, lateral & longitudinal acceleration sensor (under driver's seat)
COOLING FAN Cooling Fan Wiring Diagram for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Cooling Fan Wiring Diagram for Mercedes-Benz C300 Sport 4Matic 2012: 37 (top center of engine) me-sfi (me) control module 1.8l turbo 3.0l & 3.0l flex fuel 3.5l & 3.5l fiex fuel 5v khd C14m C18m C21m C22i C26 C4i Can-b h Can-b l Combustion engine & a/c w/ integrated control fan motor (glk-class: behind radiator) Computer data lines system Coolant circulation pump (w/ thermotronic) (right side of engine compt) Coolant temperature sensor (left rear of engine) Engine controls system Front electrical prefuse box (at right rear of engine compt) Front sam control module unit w/ fuse & relay module (left rear of engine compt) Fuse 100a Fuse 15a Hot at all times Hot w/ engine circuit 87 relay energized Khd Lues Nwg m2 Purge control valve (left front engine compt) Red Refrigerant pressure sensor (at bottom left side of radiator condenser) Reg Sig Solid state Tmot W16/3 (left side of engine compt) W16/4 (right side of engine compt) W9 (in left front wheelwell)
CRUISE CONTROL Cruise Control Wiring Diagram for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Cruise Control Wiring Diagram for Mercedes-Benz C300 Sport 4Matic 2012: 78 (+) sv +5v 1.8l turbo 12i 14i 3.0l & 3.0l flex fuel & 3.5l glk-class 3.5l c-class & 3.5l flex fuel 30g Acc Accel/ set Accelerator pedal sensor (top of accelerator pedal assembly) C2i C5c Can c h Can c l Can e h Can e l Can g h Can g l Can h h Can h l Can s h Can s l Can-e h Can-e l Computer data lines system Cruise control lever Dcm Dcp Dec Decel/ set Distronic control (if equipped) Distronic control unit Distronic electric controller unit (c-class: center of front grille) Distronic radar sensor Front sam control unit w/ fuse & relay module (left rear of engine compt) Fully integrated transmission control unit (c-class: on fully integrated transmission control unit) Fuse 5a Fuse 7.5a Hot at all times Hot w/ chassis circuit 87 relay energized Hot w/ circuit 15 relay energized Hot w/ quiescent current cutout relay energized Ind Ip1s Ip2s Ipm Left front bumper distronic sensor (dtr) Left rear bumper intelligent radar sensor (w/ blind spot assist) Left rear bumper radar sensor (c-class: left rear corner of rear bumper) Lvds n Lvds p Me-sfi (me) control module (top center of engine) Multifunction camera Off Output shaft rpm sensor Pnk Rear sam control unit w/ fuse & relay module (left side of trunk/ cargo area) Res Resume Right front bumper distronic sensor (dtr) Right rear bumper intelligent radar sensor (w/ blind spot assist) Right rear bumper radar sensor (c-class: right rear corner of rear bumper) Sp1m Sp1s Sp2m Sp2s Steering column module control unit (top of steering column) Throttle valve actuator (glk-class: throttle body) (c-class 1.8l: on throttle body) (c-class 3.0l & 3.5l: in air intake manifold) U-pwg1 Video & radar sensor system control unit Video n Video p W15/5 (left front footwell) W15/7 (right front footwell) W7 (glk-class: right side of cargo area/ trunk) (c-class: right side of trunk) X26/38 X35/28
DEFOGGERS Heated Mirrors Wiring Diagram for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Heated Mirrors Wiring Diagram for Mercedes-Benz C300 Sport 4Matic 2012: 22 Automatic air conditioning control & operating unit C3i C7i Can-b h Can-b l Computer data lines system Current cutout relay energized Front sam control module w/ fuse & relay module (left rear of engine compt) Fuse 30a Hot at all times Hot w/ quiescent Left front door control unit (c-class: front of left front door) Left outside mirror Mirror heater Rear sam control module w/ fuse & relay module (left side of trunk/ cargo area) Rear window heater button Right front door control unit (c-class: front of right front door) Right outside mirror Sh (+) Sh (-) W18 (under driver's seat) W19 (under right front seat) Rear Defogger Wiring Diagram for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Rear Defogger Wiring Diagram for Mercedes-Benz C300 Sport 4Matic 2012: 37 (coupe) w29/3 (glk-class: center cargo area roof) w8/2 (right "c" pillar) w29/4 Automatic air conditioning control & operating unit C-class C30 C30g C5h C7i Can-b h Can-b l Computer data lines system Coupe Engine compt) Front electrical prefuse box (at right rear of Fuse 150a Fuse 40a Fuse 80a Glk-class Heated rear window relay Hot at all times Hot w/ quiescent current cutout relay energized Ig1 Rear sam control unit w/ fuse & relay module (left side of trunk/cargo area) Rear window antenna amplifier 1 (if equipped) (center rear of roof) Rear window heater Rear window heater button Rear window interference suppression capacitor 1 Rear window interference suppression capacitor 1 (sedan) Rear window interference suppression capacitor 2 Red W/ eco start/ stop function W/o eco start/ stop function W29/3 (base of left "c" pillar) W7 (right side of cargo area/ trunk) W8/1 (glk-class: tailgate door) X19
ELECTRONIC POWER STEERING Electronic Power Steering Wiring Diagram for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Electronic Power Steering Wiring Diagram for Mercedes-Benz C300 Sport 4Matic 2012: 13 Can-e h Can-e l Computer data lines system Electric power steering actuator motor Electric power steering electromechanical controller unit Electric power steering torque sensor Electrical power steering control unit Front electrical prefuse box (at right rear of engine compt) Fuse 100a Hot at all times Mr7 Red W52 Power Steering Column Wiring Diagram for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Power Steering Column Wiring Diagram for Mercedes-Benz C300 Sport 4Matic 2012: 69 (w/ automatic lane detection) Accelerate & set switch Accept/terminate phone call button Aldw+ Aldw- Back & voice control system off button Button + & - setting of specific functions & volume control C-class C12i Can-e h Can-e l Center horns button Combination switch Computer data lines system Cruise control lever Decelerate & set switch Distronic control (if equipped) Fanfare horns & air bag clock spring contact (top of steering column) Front sam control unit w/ fuse/relay module (left rear of engine compt) Fuse 10a Fuse 15a Fuse 7.5a Glk-class Gnd Head lamp flasher/high beam switch Heating element temperature sensor (if equipped) Hot at all times Hot w/ terminal 30g relay energised Indicator switch Interior fuse box (behind left end of dash) Left fanfare horn system button Left multi-function steering wheel button group Lh+ Lh+/aldw- Lh- Lh-/aldw- Low beam switch Lsp+ Lsp- Mute Mute button Ntc + Ntc - Off switch Ok button Pnk Rear sam control unit w/ fuse/relay module (left side of trunk/ cargo area) Red Resume from memory switch Right fanfare horn system button Right multi-function steering wheel button group Scroll forward/ back button Steering angle sensor Steering column adjustment switch Steering column module control unit (top of steering column) Steering wheel downshift button (w/ steering wheel shift paddles) Steering wheel electronics (inside steering wheel) Steering wheel heater heating element (if equipped) Steering wheel upshift button (w/ steering wheel shift paddles) Steering wheel vibration motor System selection button Tel Turn signal lamp switch Voice control system on button W/ steering wheel heater W15/5 (left front footwell) Windshield washer system switch Wipe switch X18-c2
ELECTRONIC SUSPENSION Electronic Suspension Wiring Diagram (1 of 2) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Electronic Suspension Wiring Diagram (1 of 2) for Mercedes-Benz C300 Sport 4Matic 2012: 21 +5v Adaptive damping control unit (right front footwell) C12i Fuse 15a Gnd H side Hot w/ quiescent current cutout relay energized L side Left front level sensor (in left front wheelwell) Left rear axle damping valve unit Left rear body lateral acceleration sensor Left rear level sensor (in left rear wheelwell) Nca Pnk/red Rear sam control module w/ fuse & relay module (left side of trunk/cargo area) Right rear axle damping valve unit Right rear level sensor (c-class: in right rear wheelwell) Sig W15/7 (right front footwell) X62/32-c1 X62/33-c1 Electronic Suspension Wiring Diagram (2 of 2) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Electronic Suspension Wiring Diagram (2 of 2) for Mercedes-Benz C300 Sport 4Matic 2012: 16 +5v Adaptive damping control unit (right front footwell) Can-e h Can-e l Computer data lines system Gnd H side L side Left front axle damping valve unit Left front body lateral acceleration sensor Nca Right front axle damping valve unit Right front body lateral acceleration sensor Right front level sensor (c-class: in right front wheel well) Sig X62/7
ENGINE ACCESSORIES Stationary Heater Wiring Diagram for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Stationary Heater Wiring Diagram for Mercedes-Benz C300 Sport 4Matic 2012: 34 (right side of trunk) stationary heater radio remote control receiver Ant C14i C15h Can b h Can b l Combustion air blower Computer data lines system Fuel preheating system Fuse 20a Fuse 7.5a Glow plug flame monitor Heater control unit Hot at all times Mobile phone & stationary heater radio remote control antenna splitter (c-class: left side of trunk) Multi- function antenna (center rear of roof) Nca Preinstallation w/ universal interface Rear sam control unit w/fuse & relay module (left side of trunk/cargo area) Stationary heater fuel pump Stationary heater switchover valve Stationary heater unit (c-class: front of left front wheelwell) (gl-class: right front of engine compt) Sth Switchover valve Tel Temperature sensor Thermal fuse W/ mobile phone W/ xenon headlamps x62/33-c2 W/o mobile phone W/o xenon headlamps W16/4 (right side of engine compt) W7/1 (right side of cargo area/ trunk) X62/33-c1
ENGINE PERFORMANCE
3.0L 3.0L, Engine Performance Wiring Diagram (1 of 6) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for 3.0L, Engine Performance Wiring Diagram (1 of 6) for Mercedes-Benz C300 Sport 4Matic 2012: 81 (+) (+) sh (+) sv (-) 30g A s dk Air conditioning system C12s C16s C2i C3m C4i C6i C7i C9g Can b h Can b l Can c h Can c l Chassis circuit 87 relay Computer data lines system Coolant temperature warning lamp E rds Engine diagnosis ind lamp Ev1 Ev2 Ev3 Ev4 Ev5 Ev6 Front electrical prefuse box (at right rear engine compt) Front sam control unit w/ fuse & relay module (left rear engine compt) Fuel pressure sensor (in fuel tank) Fuel pump (fp) (top fuel tank) Fuel pump control module (under right rear seat) Fuse 10a Fuse 150a Fuse 40a Fuse 7.5a Hot w/ quiescent current cutout relay energized Ig1 Instrument cluster Ipm Lin c1 Ls2hk Lsh1hk Lsh2hk Lshk Lshvk1 Lsik Lsu1un Lsu1vm Lsu2ia Lsu2ip Lsu2un Lsu2vm Me-sfi (me) control module (top center of engine) Mr hfm1 Nca Nwae2 Nwg m Nwg m2 Nwga1 Nwsa 1 Nwse 1 Nwse 2 Pnk/red Red Secondary air injection relay Slv Starting/charging system Suv1 Ths W76 (under right rear seat) X36/3-c2 Zue 1 Zue 2 Zue 3 Zue 4 Zue 5 Zue 6 3.0L, Engine Performance Wiring Diagram (2 of 6) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for 3.0L, Engine Performance Wiring Diagram (2 of 6) for Mercedes-Benz C300 Sport 4Matic 2012: 41 (+) sv (fuel tank) left fuel level indicator sensor (fuel tank) right fuel level indicator sensor (top front of engine) air pump C30g C3i C9i Can c h Can e h Cmr2 Cmr4 Computer data lines system Dst Ekp Front electrical prefuse box (right rear engine compt) Fuel tank pressure sensor (fuel tank) Fuse 150a Fuse 20a (or 25a) Fuse 60a Hot at all times Lin Me-sfi (me) control module (top center of engine) Nca Pnk/red Rear sam control unit w/ fuse & relay module (left side trunk/cargo area) Red Senm1 Slp Sp1m Sp1s Sp2s Starting/ charging system Str U pwg1 W11w2 (left rear engine) W16/5 (left rear of engine compt) X25/4 X26/2 X35/6 X36/3-c1 X36/3-c2 3.0L, Engine Performance Wiring Diagram (3 of 6) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for 3.0L, Engine Performance Wiring Diagram (3 of 6) for Mercedes-Benz C300 Sport 4Matic 2012: 27 (left front engine compt) purge control valve (left front of engine) refrigerant compressor (left rear of engine compt) front sam control unit w/ fuse & relay module (right rear wheelhouse) activated charcoal filter shutoff valve (w/ sulev) radiator sensor for engine diagnosis Aav Accelerator pedal sensor (top of accelerator pedal assembly) Air conditioning system C18m C20m C21m C3m Can c l Can e l Computer data lines system Crash Left o2 sensor (upstream of catalytic converter) (under left front of vehicle, in exhaust) Lues Me-sfi (me) control module (top center of engine) Nca Pnk Red Reg Sp2m W16/4 (right side engine compt) X26-c1 X35/6 3.0L, Engine Performance Wiring Diagram (4 of 6) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for 3.0L, Engine Performance Wiring Diagram (4 of 6) for Mercedes-Benz C300 Sport 4Matic 2012: 22 (under right front of vehicle, in exhaust) right o2 sensor (upstream of catalytic converter) Air conditioning system Air pump switchover valve C3m C41 C6i Engine circuit 87 relay Front sam control unit w/ fuse & relay module (left rear of engine compt) Fuse 15a Fuse 20a Fuse 5a Heating system shutoff valve (glk-class: engine, rear) Hot at all times Intake manifold switchover valve Intake manifold tumble flap switchover valve (intake manifold) Left o2 sensor (downstream of catalytic converter) (front vehicle, in exhaust) Nca Pnk Red Right o2 sensor (downstream of catalytic converter) (under right front of vehicle, in exhaust) X205 X26-c1 3.0L, Engine Performance Wiring Diagram (5 of 6) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for 3.0L, Engine Performance Wiring Diagram (5 of 6) for Mercedes-Benz C300 Sport 4Matic 2012: 16 (c-class: in air intake manifold) (glk-class: throttle body) throttle valve actuator (left rear of engine) crankshaft hall sensor (top rear of engine) hot film maf sensor Cylinder 4 injection valve Cylinder 5 injection valve Cylinder 6 injection valve Ignition coils cylinder (glk-class: top right side engine) (c-class: top of left cylinder bank Intake air temperature sensor Left exhaust camshaft solenoid (left front of engine) Left intake camshaft solenoid (left front of engine) Pnk Radio interference suppression capacitor 2 (top left side of engine) To spark plugs W11w1 (right rear engine) W16/5 (left side engine compt) X26-c1 3.0L, Engine Performance Wiring Diagram (6 of 6) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for 3.0L, Engine Performance Wiring Diagram (6 of 6) for Mercedes-Benz C300 Sport 4Matic 2012: 47 (-) (between cylinder banks) (front left cylinder bank) left exhaust camshaft hall sensor (front left cylinder bank) left intake camshaft hall sensor (front right cylinder bank) right exhaust camshaft hall sensor (front right cylinder bank) right intake camshaft hall sensor (left front engine) pressure sensor (left rear engine) left intake manifold tumble flap position sensor (right rear engine) right intake manifold tumble flap position sensor Air conditioning system Cylinder 1 injection valve Cylinder 2 injection valve Cylinder 3 injection valve Dcm Dcp Dk1 Dk2 E a ks1a E a ks1b E a ks2a E a ks2b Ea tans Ef hfm1 Ef ref1 Hav Ignition coils cylinder (glk-class: top right side engine) (c-class: (top of right cylinder bank) Ip1s Ip2s Kwdga Left knock sensor Lshvk2 Lsu1a Lsu1p Me-sfi (me) control module (top center of engine) Nwge1 Nwge2 Nwsa 2 Oil level check switch (left side of oil pan) Oss Pnk Radio interference suppression capacitor 1 (top right side of engine) Right exhaust camshaft solenoid (right front of engine) Right intake camshaft solenoid (right front of engine) Right knock sensor Tmot To spark plugs W11w2 (left rear engine)
3.0L FLEX FUEL 3.0L Flex Fuel, Engine Performance Wiring Diagram (1 of 6) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for 3.0L Flex Fuel, Engine Performance Wiring Diagram (1 of 6) for Mercedes-Benz C300 Sport 4Matic 2012: 81 (+) (+) sh (+) sv (-) 30g A s dk Air conditioning system C12s C16s C2i C3m C4i C6i C7i C9g Can b h Can b l Can c h Can c l Chassis circuit 87 relay Computer data lines system Coolant temperature warning lamp E rds Engine diagnosis ind lamp Ev1 Ev2 Ev3 Ev4 Ev5 Ev6 Front electrical prefuse box (at right rear engine compt) Front sam control unit w/ fuse & relay module (left rear engine compt) Fuel pressure sensor (in fuel tank) Fuel pump (fp) (top fuel tank) Fuel pump control module (under right rear seat) Fuse 10a Fuse 150a Fuse 40a Fuse 7.5a Hot w/ quiescent current cutout relay energized Ig1 Instrument cluster Ipm Lin c1 Ls2hk Lsh1hk Lsh2hk Lshk Lshvk1 Lsik Lsu1un Lsu1vm Lsu2ia Lsu2ip Lsu2un Lsu2vm Me-sfi (me) control module (top center of engine) Mr hfm1 Nca Nwae2 Nwg m Nwg m2 Nwga1 Nwsa 1 Nwse 1 Nwse 2 Pnk/red Red Secondary air injection relay Slv Starting/charging system Suv1 Ths W76 (under right rear seat) X36/3-c2 Zue 1 Zue 2 Zue 3 Zue 4 Zue 5 Zue 6 3.0L Flex Fuel, Engine Performance Wiring Diagram (2 of 6) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for 3.0L Flex Fuel, Engine Performance Wiring Diagram (2 of 6) for Mercedes-Benz C300 Sport 4Matic 2012: 41 (+) sv (fuel tank) left fuel level indicator sensor (fuel tank) right fuel level indicator sensor (top front of engine) air pump C30g C3i C9i Can c h Can e h Cmr2 Cmr4 Computer data lines system Dst Ekp Front electrical prefuse box (right rear engine compt) Fuel tank pressure sensor (fuel tank) Fuse 150a Fuse 20a (or 25a) Fuse 60a Hot at all times Lin Me-sfi (me) control module (top center of engine) Nca Pnk/red Rear sam control unit w/ fuse & relay module (left side trunk/cargo area) Red Senm1 Slp Sp1m Sp1s Sp2s Starting/ charging system Str U pwg1 W11w2 (left rear engine) W16/5 (left rear of engine compt) X25/4 X26/2 X35/6 X36/3-c1 X36/3-c2 3.0L Flex Fuel, Engine Performance Wiring Diagram (3 of 6) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for 3.0L Flex Fuel, Engine Performance Wiring Diagram (3 of 6) for Mercedes-Benz C300 Sport 4Matic 2012: 27 (left front engine compt) purge control valve (left front of engine) refrigerant compressor (left rear of engine compt) front sam control unit w/ fuse & relay module (right rear wheelhouse) activated charcoal filter shutoff valve (w/ sulev) radiator sensor for engine diagnosis Aav Accelerator pedal sensor (top of accelerator pedal assembly) Air conditioning system C18m C20m C21m C3m Can c l Can e l Computer data lines system Crash Left o2 sensor (upstream of catalytic converter) (under left front of vehicle, in exhaust) Lues Me-sfi (me) control module (top center of engine) Nca Pnk Red Reg Sp2m W16/4 (right side engine compt) X26-c1 X35/6 3.0L Flex Fuel, Engine Performance Wiring Diagram (4 of 6) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for 3.0L Flex Fuel, Engine Performance Wiring Diagram (4 of 6) for Mercedes-Benz C300 Sport 4Matic 2012: 22 (under right front of vehicle, in exhaust) right o2 sensor (upstream of catalytic converter) Air conditioning system Air pump switchover valve C3m C41 C6i Engine circuit 87 relay Front sam control unit w/ fuse & relay module (left rear of engine compt) Fuse 15a Fuse 20a Fuse 5a Heating system shutoff valve (glk-class: engine, rear) Hot at all times Intake manifold switchover valve Intake manifold tumble flap switchover valve (intake manifold) Left o2 sensor (downstream of catalytic converter) (front vehicle, in exhaust) Nca Pnk Red Right o2 sensor (downstream of catalytic converter) (under right front of vehicle, in exhaust) X205 X26-c1 3.0L Flex Fuel, Engine Performance Wiring Diagram (5 of 6) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for 3.0L Flex Fuel, Engine Performance Wiring Diagram (5 of 6) for Mercedes-Benz C300 Sport 4Matic 2012: 16 (c-class: in air intake manifold) (glk-class: throttle body) throttle valve actuator (left rear of engine) crankshaft hall sensor (top rear of engine) hot film maf sensor Cylinder 4 injection valve Cylinder 5 injection valve Cylinder 6 injection valve Ignition coils cylinder (glk-class: top right side engine) (c-class: top of left cylinder bank Intake air temperature sensor Left exhaust camshaft solenoid (left front of engine) Left intake camshaft solenoid (left front of engine) Pnk Radio interference suppression capacitor 2 (top left side of engine) To spark plugs W11w1 (right rear engine) W16/5 (left side engine compt) X26-c1 3.0L Flex Fuel, Engine Performance Wiring Diagram (6 of 6) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for 3.0L Flex Fuel, Engine Performance Wiring Diagram (6 of 6) for Mercedes-Benz C300 Sport 4Matic 2012: 47 (-) (between cylinder banks) (front left cylinder bank) left exhaust camshaft hall sensor (front left cylinder bank) left intake camshaft hall sensor (front right cylinder bank) right exhaust camshaft hall sensor (front right cylinder bank) right intake camshaft hall sensor (left front engine) pressure sensor (left rear engine) left intake manifold tumble flap position sensor (right rear engine) right intake manifold tumble flap position sensor Air conditioning system Cylinder 1 injection valve Cylinder 2 injection valve Cylinder 3 injection valve Dcm Dcp Dk1 Dk2 E a ks1a E a ks1b E a ks2a E a ks2b Ea tans Ef hfm1 Ef ref1 Hav Ignition coils cylinder (glk-class: top right side engine) (c-class: (top of right cylinder bank) Ip1s Ip2s Kwdga Left knock sensor Lshvk2 Lsu1a Lsu1p Me-sfi (me) control module (top center of engine) Nwge1 Nwge2 Nwsa 2 Oil level check switch (left side of oil pan) Oss Pnk Radio interference suppression capacitor 1 (top right side of engine) Right exhaust camshaft solenoid (right front of engine) Right intake camshaft solenoid (right front of engine) Right knock sensor Tmot To spark plugs W11w2 (left rear engine)
EXTERIOR LIGHTS Backup Lamps Wiring Diagram for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Backup Lamps Wiring Diagram for Mercedes-Benz C300 Sport 4Matic 2012: 31 30g Backup lamp Backup lamp switch (m/t) (on right rear of transmission) C22i C5h C9g C9i Can-b h Can-b l Can-c h Can-c l Computer data lines system Electronic selector lever module control module (a/t) (under center console) Front electrical prefuse box (at right rear of engine compt) Front sam control unit w/ fuse & relay module (left rear of engine compt) Fuse 150a Glk class Hot w/ quiescent current cutout relay energized Ig1 red Left rear lamp unit Rear sam control unit w/ fuse & relay module (left side of trunk/cargo area) Red Rfl Rfl-l Rfl-r Right rear lamp unit Start/stop function c class Start/stop function w/ eco W/o eco W15/7 (right front footwell) W7 (right side of cargo area/trunk) Exterior Lamps Wiring Diagram (1 of 3) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Exterior Lamps Wiring Diagram (1 of 3) for Mercedes-Benz C300 Sport 4Matic 2012: 61 (left front footwell) w15/5 16s 49l 49r 58d 58l 58r Acoustic turn signal function check Air conditioning system C11c C14m C15m C17c C18m C19i C20m C21m C22i C7i Can b h Can b l Can e h Can e l Computer data lines system Exterior lights switch Front fog lamp button Front sam control unit w/ fuse & relay module (left rear of engine compt) Fuse 10a Fuse 7.5a Hazard warning flasher switch Headlamp range controller (w/o xenon lamps & w/ headlamp adjustment for halogen headlamps) Hot w/ circuit 15 relay energized Instrument cluster Instrument panel switch group Lds1 Lds2 Lds3 Left active curve illumination actuator motor Left active curve illumination position sensor Left front Left front lamp unit Left front standing & Left signal lamp actuation module led Left turn signal ind light Lin 1 Lwr Parking lamp Pnk/ red Pnk/red Rear fog light button Red Right turn signal ind light Standing/ parking lamp Switch illumination Turn signal lamp W/ xenon W/o xenon W/o xenon lamps W16/5 (left rear of engine compt) W9 (in left front wheelwell) X18-c3 Exterior Lamps Wiring Diagram (2 of 3) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Exterior Lamps Wiring Diagram (2 of 3) for Mercedes-Benz C300 Sport 4Matic 2012: 40 (+) Bls 12v Bls h Bls l Bls m C7i Can b h Can b l Can e h Can e l Computer data lines system Electronic stability program control unit (left front of engine compt) Front sam control unit w/ fuse & relay module (left rear of engine compt) Fuse 25a Hot at all times Left front door control module (left front door assembly) Left front side marker lamp Left outside mirror Nca Parking lamp Pnk/red Red Right active curve illumination actuator motor Right active curve illumination position sensor Right front Right front door control module (right front door assembly) Right front headlamp unit Right front lamp unit Right front side marker lamp Right front standing & Right outside mirror Right signal lamp actuation module led Standing/ parking lamp Stop lamp switch (under left side of dash) Turn signal lamp W/ xenon W/o xenon W16/3 (left side of engine compt) W16/4 (right side of engine compt) W70 (left front of engine compt) Exterior Lamps Wiring Diagram (3 of 3) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Exterior Lamps Wiring Diagram (3 of 3) for Mercedes-Benz C300 Sport 4Matic 2012: 55 (top center of front windshield) (w/ standard equipment) light sensor 15r 30g 49r 58l 6hd Bsl l Bsl r C5c C5h C6hd C7i C9i Can b h Can b l Can e h Can e l Center stop lamp Combination switch Computer data lines system Flasher/ high beam switch Fog lamp Front electrical prefuse box (at right rear of engine compt) Front sam control unit w/ fuse & relay module (at left rear of engine compt) Fuse 150a Fuse 7.5a Fuse 80a Headlamp Hot at all times Inner stop/ tail lamp Left license plate lamp Left rear lamp unit Lin 2 Mr2 Nsl r Overhead control panel control module (w/ can) (center rear of trunk) overhead control panel electronics (w/o can) Pnk Pnk/red Rain/light sensor (w/ rain/light sensor) (top center of windshield) Rear sam control unit w/ fuse & relay module (left side of trunk/cargo area) Red Right license plate lamp Right rear lamp unit Side marker lamp Sl l Sl r Steering column module control unit (top of steering column) Stop/ tail/ park lamp Turn signal lamp Turn signal lamps switch W/ eco start/stop function W/o eco start/stop function W15/5 (left front footwell) W7 (right side of cargo area/ trunk) W7 (right side of trunk) Trailer Light Wiring Diagram for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Trailer Light Wiring Diagram for Mercedes-Benz C300 Sport 4Matic 2012: 35 (right side of cargo area/trunk) (c-class) w7 (glk-class) w7/1 30g 31 led 31/1 31/2 49l 49r 58l Ahk C13a C89 Can b h Can b l Computer data lines system Front electrical prefuse box (right rear of engine compt) Fuse 150a Fuse 15a Fuse 20a Hot at all times Hot w/ circuit 15 relay energized Hot w/ quiescent current cutout relay energized Ig1 Led Rear sam control unit w/ fuse & relay module (left side of trunk/cargo area) Red Rfl Stop function Trailer hitch locking switch (w/ swiveling trailer hitch) Trailer hitch release (w/ swiveling trailer hitch) Trailer recognition control unit (glk class : right rear cargo area) Trailer socket (7-pin) W/ eco start/ stop function W/o eco start/ W7 (right side of cargo area/trunk) W7/1 (glk-class) w7 (c-class) (right side of cargo area/trunk)
GROUND DISTRIBUTION Ground Distribution Wiring Diagram (1 of 2) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Ground Distribution Wiring Diagram (1 of 2) for Mercedes-Benz C300 Sport 4Matic 2012: 26 Back-up camera control unit (if equipped), pedestrain protection hall sensor + engine hood ata (edw) switch (if equipped), multi-contour seat pneumatic pump (c-class), sound system amplifier control unit (if equipped), rear blower motor (w/ 3 zone thermotronic), satellite digital audio radio (sdar) control unit (if equipped), digital audio broadcasting control unit (if equipped), sdar control unit/ high definition tuner, overhead control panel electronics (c-class & w/o can), emergency call system control unit (if equipped), overhead control panel control unit (c-class & w/ can) & tire pressure monitor control unit (c-class) Battery sensor Dc/ac converter control unit Electric air pump, radio interference suppression capacitor 1, cylinder 1 ignition coil, cylinder 2 ignition coil & cylinder 3 ignition coil Electrical power steering control unit (c-class) & electro hydraulic power steering (glk-class) Electronic stability program control unit Intelligent servo module for direet seleet, fuel quality sensor, root particulate sensor control unit, driver side air bag squib, electronic selector lever module control unit (a/t), left front reversible emergency tensioning retractor (if equipped), left front door control unit, driver seat control unit, left rear seat belt buckle switch (c-class & if equipped), left rear backrest inclination switch (if equipped), left rear door lock, left rear door control unit, left front seat sitting surface heated cushion (if equipped), left front backrest heated cushion (if equipped), driver seat partially electric seat adjustment switch (if equipped), left front seat adjustment switch group (if equipped), driver seat lumbar support adjustment control unit (if equipped), driver seat lumbar support pneumatic pump (if equipped), left luggage compartment lamp (glk-class), rear blower motor (glk-class w/ 3 zone thermotronic), driver pelvis air bag squib (if equipped) & electric transmission oil pump Radio interference suppression capacitor 2, cylinder 4 ignition coil, cylinder 5 ignition coil & cylinder 6 ignition coil Rear sam control module w/ fuse & relay module, left rear lamp unit, left rear side marker lamp, right rear lamp unit, right rear side marker lamp, tailgate keyless go button (if equipped), trunk lid emergency opening switch, left rear bumper intelligent radar sensor (w/ blind spot assist), right rear bumper intelligent radar sensor (w/ blind spot assist), trailer socket (glk-class), additional battery relay (w/ eco start/stop), interior protection & two-away protection control unit shield, right luggage compartment lamp, trailer recognition control unit, tv digital tuner, trailer socket (7 pin) (glk-class), tailgate control button (c-class w/ keyless go & autometic tailgate), right rear seat belt buckle switch (if equipped), center rear seat belt buckle switch (if equipped), keyless-go control unit (c-class & if equipped), center stop lamp, left license plate lamp, right license plate lamp, tailgate central locking motor, tailgate external opeation switch, left tailgate ambient lamp & warning lamp (c-class), tailgate contact switch (c-class), load compartment socket (glk-class), radio data transmission keyboard electrical connector 1 (w/ preinstallation for two-way radio system in trunk), special-purpose vehicle multi-functiion control unit, two-way radio electrical connector (if equipped), taximeter electrical connector (if equipped) & taxi peripheral device electrical connector (if equipped) Rear sam control unit w/ fuse & relay module, interior protection & tow away protection control unit shield (if equipped), trailer socket (c-class), trailer socket (7-pin), trailer recognition control unit, rear bass speaker amplifier (glk-class w/ sound system), tailgate control button (glk-class w/ automatic tailgate & keyless go), right rear seat belt buckle switch (glk-class & if equipped), center rear seat belt buckle switch (glk-class & if equipped), tv digital tuner (glk-class & if equipped), center stop lamp (glk-class), left license plate lamp (glk-class), right license plate lamp (glk-class), tailgate central locking motor (glk-class), trunk-lid external operation switch (glk-class), left tailgate ambient lamp & warning lamp (glk-class), right tailgate ambient lamp & warning lamp (glk-class), tailgate wiper motor (glk-class), stationary heater radio remote control receiver (if equipped), compensator/cellular telephone system umts (if equipped & w/ stationary heater), stationary heater fuel pump, left rear backrest lock switch (if equipped), right rear backrest lock switch (if equipped), tire pressure monitor control unit (if equipped) & dc/ac converter control unit (c-class) Spray nozzle heater (if equipped), wiper park heater (if equipped), spray nozzle hose heater (if equipped), left fog lamp (w/ standard equipment), combustion engine & air conditioning w/ integrated control fan motor, left daytime running lamps headlamp (if equipped) & left front lamp unit Vehicle floor chassis can voltage distributor electrical connector, left vehicle floor interior can voltage distributor electrical connector & telematics can voltage distributor electrical connector W10 (near battery) W11w1 (right rear engine) W11w2 (left rear engine) W15/6 (left front footwell) W18 (under driver seat) W18/3 (under driver seat) W33/4 (c-class: right "c" pillar) W52 W6/1 (glk-class) (left rear cargo panel) W7 (right side of cargo area/trunk) W7/1 (right side of cargo area/trunk) W7/2 (glk-class) W70 (left front engine compt) W9 (left front wheelhouse) Ground Distribution Wiring Diagram (2 of 2) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Ground Distribution Wiring Diagram (2 of 2) for Mercedes-Benz C300 Sport 4Matic 2012: 31 (c-class: right "c" pillar) Capacitor 1 Capacitor 2 Drive train can voltage distributor electrical connector, distronic electric connector unit (if equipped), left front bumper distronic sensor (w/ video & radar sensor system control unit), right front bumper distronic sensor (w/ video & radar sensor system control unit) & potential distribution electrical connector (can 1) Drivers side instrument panel ambulance illumination, passengers side instrument panel ambulance illumination, steering column module control unit, electronic ignition switch control unit, automatic air conditioning control & operating unit, instrument cluster, upper control panel control unit, instrument panel switch group (glk-class), electric steering lock control unit, media interface control unit (w/ aux jack), glove box lamp, parking brake indicator switch, diagnostic connector, radio (audio 20), audio/comand control panel, glove box socket (if equipped), audio/comand display (if equipped), mobile phone electrical connector (if equipped), right front footwell lamp (if equipped), left front footwell lamp (if equipped), interior temperature sensor, left front side air outlet symbol illumination (if equipped), right front side air outlet symbol illumination (if equipped), rear air outlet symbol illumination (w/ 2-zone thermatic) left engine hood contact switch (eco start/stop function), navigation module (if equipped), comand control unit & additional battery (except eco start/stops w/ servo module for direct select) Electronic transmission control unit, adaptive damping system control unit, parking system control unit (if equipped) (glk-class), fully integrated transmission control unit, ac housing, multi-function camera, backup lamp switch (m/t), (a/t & eco start/stop function), electric transmission oil pump, left front bumper distronic sensor (w/ video & radar sensor system control unit), right front bumper distronic sensor (w/ video & radar sensor system control unit), transmission mode control unit, video & radar & distronic electric controller unit (if equipped), headlamp control unit & distronic electric controller unit Front passenger pelvis air bag squib (if equipped), right rear display (w/ tv & video in rear) dvd player (w/ tv & video in rear) left rear display (w/ tv & video in rear) right front reversible emergency tensioning retractor (if equipped), front cigarette lighter w/ astray illumination (w/ non smoker package), fuel pump, right front brake wear sensor, right rear brake wear sensor, right front door control unit, front passenger seat control unit, right rear backrest inclination switch (if equipped), front vehicle interior power outlet (w/ smoker package), right rear door lock, right rear door control unit (glk-class), right front seat sitting surface heated cushion (if equipped), right front backrest heated cushion (if equipped), front passenger seat partially electric seat adjustment switch (if equipped), right front seat adjustment switch group (if equipped), front passenger seat lumbar support adjustment control unit (if equipped), front passenger seat lumbar support pneumatic pump (if equipped), weight sensing system (wss) control unit (if equipped), front passenger side bag squib & vehicle interior power outlet (w/ rear socket) Fuel pump control unit Left engine hood contact switch (c-class), front electrical prefuse box (w/ eco start/stop function), left fanfare horn, clutch pedal switch (m/t), start enable clutch pedal switch (m/t), headlamp cleaning system pump (if equipped) windshield washer system pump & left front side marker lamp (c-class) Me-sfi (me) control unit, front sam control unit w/ fuse & relay module, cylinder 1 ignition coil, cylinder 2 ignition coil, cylinder 3 ignition coil, cylinder 4 ignition coil, cylinder 5 ignition coil & cylinder 6 ignition coil Rear window interference suppression Rear window suppression capacitor 1 (c-class) Rear window suppression capacitor 2 (c-class) Right fanfare horn, stationary heater switch over valve (if equipped), radiator sensor for engine diagnosis, right daytime running lamps headlamp (if equipped), right engine hood contact switch (w/ eco start/stop), front electrical prefuse box (w/ eco start/stop function), stationary heater unit (if equipped), right front lamp unit, right front side marker lamp, right fog lamp (w/ standard equipment) & coolant circulation pump (w/ 3 zone thermotronic) control unit of fuel filter w/ condensation sensor for heating element Tailgate door) W15/5 (left front footwell) W15/7 (right front footwell) W15/8 (right front footwell) W16/3 (left side engine compt) W16/4 (right side engine compt) W16/5 (left rear engine compt) W19 (under right front seat) W26 (under front center console) W29/3 (left "c" pillar) W29/4 W48/2 (glk-class: rear roof) W76 (under right rear seat) W8/1 (glk-class: tailgate door) W8/2 (glk-class: center cargo area roof) W8/4 (glk-class: W8/5 (glk-class: right cargo area)
HEADLIGHTS Headlights Wiring Diagram, with Xenon Lamps (1 of 2) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Headlights Wiring Diagram, with Xenon Lamps (1 of 2) for Mercedes-Benz C300 Sport 4Matic 2012: 57 16s 30g 58d C11c C14m C15m C17c C20m C21m C22i C5c C7i Can b h Can b l Computer data lines system Exterior lights switch Front electrical prefuse box (right rear of engine compt) Front fog lamp button Front sam control unit w/ fuse & relay module (left rear of engine compt) Fuse 100a Fuse 10a Fuse 150a Fuse 20a Fuse 7.5a Hot at all times Hot w/ quiescent current cutout relay energized Hot w/circuit 15 relay energized Illumination Interior lights system Lds1 Lds2 Lds3 Left daytime running lamp (if equipped) Left fog lamp (if equipped) Mg1 Mr2 Pnk/red Rear fog lamp button Red Right active curve illumination actuator motor Right active curve illumination actuator sensor Right cornering Right fog lamp (if equipped) Right front lamp unit Right headlamp range adjustment actuator motor Right light distribution actuator motor Right light distribution position sensor Right xenon bulb Stop function Switch illumination W/ eco start/ stop function W/ integrated ignition module W/o eco start/ W16/3 (left side of engine compt) W16/4 (right side of engine compt) W9 (left front wheelwell) X18-c3 Headlights Wiring Diagram, with Xenon Lamps (2 of 2) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Headlights Wiring Diagram, with Xenon Lamps (2 of 2) for Mercedes-Benz C300 Sport 4Matic 2012: 48 (in left front wheelwell) left front level sensor (in left rear wheelwell) left rear level sensor (left side of trunk/cargo area) rear sam control unit w/ fuse & relay module +5v Abbl-l Abbl-r C5h C9i Can b h Can b l Can e h Can e l Can g h Can g l Combination switch Computer data lines system Front fog lamps indicator lamp Headlamp control unit Headlamp flasher/ high beam switch High beam indicator Illumination Instrument cluster Left active curve illumination actuator motor Left active curve illumination actuator sensor Left cornering Left front lamp unit Left headlamp range adjustment actuator motor Left light distribution actuator motor Left light distribution position sensor Left rear lamp unit Left xenon bulb Lin Low beam indicator lamp Low beam switch Rear fog lamp Rear fog lamp indicator Right daytime running lamp (if equipped) Right rear lamp unit Sig Steering column module control unit (top of steering column) W/ integrated ignition module W15/5 (left front footwell) W15/7 (right front footwell) W16/4 (right side of engine compt) W7 (right side of trunk) X35/6-c5 X35/6-c9 X62/32-c1 Headlights Wiring Diagram, without Xenon Lamps for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Headlights Wiring Diagram, without Xenon Lamps for Mercedes-Benz C300 Sport 4Matic 2012: 86 (left front footwell) w15/5 (left side of trunk/cargo area) rear sam control unit w/ fuse & relay module (right side of trunk) w7 (top of steering column) steering column module control unit 16s 30g 55l 55r 56a r 56al 56b l 56b r 58d Air conditioning system C11c C14m C15m C17c C18m C20m C21m C22i C2i C5c C5h C9i Can b h Can b l Can c h Can c l Can e h Can e l Combination switch Computer data lines system Exterior lights switch For halogen headlamps headlamps Front electrical prefuse box (at right rear of engine compt) Front fog lamp button Front fog lamp ind Front sam control module w/ fuse & relay module (left rear of engine compt) Front sam control unit w/ fuse & relay module (left rear of engine compt) Fuse 100a Fuse 10a Fuse 150a Fuse 7.5a Headlamp flasher/ high beam switch Headlamp range adjustment actuator motor Headlamp range controller (w/ headlamp adjustment for halogen headlamps) High beam High beam ind Hot at all times Hot w/ circuit 15 relay energized Hot w/ quiescent current cutout relay energized Instrument cluster Lds1 Lds2 Lds3 Left daytime running lamp (if equipped) Left fog lamp Left front lamp unit Left rear lamp unit Low beam Low beam ind Low beam switch Lwr Mg1 Mr2 Pnk/red Rear fog lamp Rear fog lamp button Rear fog lamp ind Red Right daytime running lamp (if equipped) Right fog lamp Right front lamp unit Right rear lamp unit Switch illumination W/ eco start/stop function W/ headlamp adjustment W/o eco start/stop function W16/4 (right side of engine compt) W16/4 (right side of engine compt) W16/5 (left rear of engine compt) W7 (right side of trunk) W9 (in left front wheelwell) X18-c3
HORN Horn Wiring Diagram for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Horn Wiring Diagram for Mercedes-Benz C300 Sport 4Matic 2012: 29 14m 15m C15m C22i C5c Can b h Can b l Can e h Can e l Center horns button Computer data lines system Fanfare horn relay Fanfare horns & air bag clock spring contact (c-class: top of steering column) (glk-class: integral to steering column) Front sam control unit w/ fuse & relay module (left rear of engine compt) Fuse 31b 15a Fuse 7.5a Hot at all times Hot w/ quiescent current cutout relay energized Left fanfare horn (behind left side of front bumper) Left fanfare horn system button Relay Right fanfare horn (behind right side of front bumper) c1 Right fanfare horn system button Steering column module control unit (top of steering column) Steering wheel electronics W15/5 (left front footwell) W16/3 (left side engine compt) W16/3 (left side of engine compt) W16/4 (right side of engine compt)
INSTRUMENT CLUSTER Instrument Cluster Wiring Diagram (1 of 2) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Instrument Cluster Wiring Diagram (1 of 2) for Mercedes-Benz C300 Sport 4Matic 2012: 66 (right front of engine compt) coolant level switch Acoustic turn signal light function check Anti-lock brake system indicator lamp Bbv hl Bbv hr Bfs Brake system warning lamp C11c C15m C17c C19i C20m C22i C5c Can b h Can b l Can e h Can e l Computer data lines system Coolant temperature gauge Coolant temperature warning lamp Digital clock & outside temperature indicator Distronic warning lamp Driver seat belt buckle restraint systems switch (in driver seat belt buckle) Electronic stability program warning lamp Engine diagnosis malfunction indicator lamp Espa/asr off warning lamp Front fog lamp indicator lamp Front passenger seat belt buckle restraint systems switch (front passenger seat belt buckle) Front passenger seat occupied recognition (w/ seat belt reminder warning) (c-class: front passenger's seat cushion) Front sam control unit w/ fuse & realy module (left rear of engine compt) Fuel level indicator Fuel reserve indicator lamp Fuse 7.5a Gear indicator (prnd) Gss, bf Gss, fa High beam indicator lamp Hot at all times Hot w/ quiescent current cutout relay energized Instrument cluster Instrument illumination Instrument illumination brightness control Left turn signal ind lamp Lin 1 Low beam indicator lamp Multi-function display Rear fog lamp indicator lamp Return line Right turn signal ind lamp Sbe Seat belt warning lamp Service brake indicator lamp Sig Speedometer Standing lamps indicator lamp Tachometer & brightness sensor Tire pressure monitor warning lamp (if equipped) Transmission mode display (s) Travel distance display W15/5 (left front footwell) W16/3 (left side of engine compt) Warning buzzer X28/18 X55/3-c2 X55/4-c2 Instrument Cluster Wiring Diagram (2 of 2) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Instrument Cluster Wiring Diagram (2 of 2) for Mercedes-Benz C300 Sport 4Matic 2012: 48 30g Anti-theft alarm system indicator lamp Ata (edw) function indicator Automatic child seat recognition air bag off indicator lamp Automatic child seat recognition warning lamp Brake fluid level switch (brake fluid reservoir) C7i C9i Can b h Can b l Can c h Can c l Computer data lines system Downhill speed regulation button (glk class) Eco start/ stop function button Electronic selector lever module control module (under center console) Esp button Glk class early production Glk class late production & c class Hazard warning flasher switch Hazard warning system button Instrument panel switch group Left front heated seat button Left front seat ventilation button Left fuel level indicator sensor (in fuel tank) Lin 1 Nca Offroad program button (glk class) Parking brake indicator switch (parking brake support bracket) Parking system button Rear head restraints button Rear sam control unit w/ fuse & relay module (left side trunk/ cargo area) Rear window roller sun blind button Right front brake pad wear sensor (right front brake assembly) Right front heated seat button Right front seat ventilation button Right fuel level indicator sensor (in fuel tank) Right rear brake pad wear sensor (right rear brake assembly) Stationary heater button Tg l Tg r Upper control panel control unit Vehicle dynamics button W15/5 (left front footwell) W19 (under right front seat) W7 (right side of trunk) X62/33-c3 X62/6 Overhead Console Wiring Diagram, with Sunroof (1 of 2) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Overhead Console Wiring Diagram, with Sunroof (1 of 2) for Mercedes-Benz C300 Sport 4Matic 2012: 45 (center front of trunk) emergency call system control unit 15r 30g 58d C13d C15m C19i Can b h Can b l Computer data lines system Front dome lamp switch Front sam control unit w/ fuse & relay module (left rear of engine compt) Fuse 30a Hot w/ quiescent current cutout relay energized Hs (+) Hs 1 Hs 2 Info Info led Interior lamp automatic function switch Interior lights system Interior protection switch (w/ tow-away protection & interior protection) Interior temperature sensor w/ integrated fan Left front interior lamp Left front reading lamp switch Lin 2 Ll l 12v Ll r 12v Motor + Motor - Overhead control panel control unit (center rear of trunk) Pnk Power tops system Rear dome lamp switch Red Right front interior lamp Right front reading lamp switch Sos Sos led Tilting/ sliding roof switch Towing sensor button (w/ tow-away protection & interior protection) W16/3 (left side of engine compt) W18/3 (under dirver's seat) Ws led X18/37 Overhead Console Wiring Diagram, with Sunroof (2 of 2) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Overhead Console Wiring Diagram, with Sunroof (2 of 2) for Mercedes-Benz C300 Sport 4Matic 2012: 46 (not used) 58d Ambient lamp Ass led Ass off Automatic dimming mirror C5h C7i C8d Can b h Can b l Compass display button Compass module w/ display (if equipped) Computer data lines system Forward automatic dimming mirror light sensor Fuse 7.5a Garage door opener Garage door opener button 1 Garage door opener button 2 Garage door opener button 3 Garage door opener indicator lamp Gnd Hands-free system microphone Hot at all times Inside rearview mirror Interior protection & tow-away protection control unit (if equipped) (center front of roof) Interior protection receiver (integral to interior protection & tow-away protection control unit) Irs led Irs-off Left interior protection transmitter (integral to interior protection & tow-away protection control unit) Left reading lamp Light sensor (w/o rain/light sensor) rain/light sensor (w/ rain/light sensor) (top center of windshield) Lin b4 Mic 1 Mic 2 Nca Pnk Radio (w/ audio 20) comand control unit (w/o audio 20) Rear sam control unit w/ fuse & relay module (left side of trunk/cargo area) Rearward automatic dimming mirror light sensor Red Right interior protection transmitter (integral to interior protection & tow-away protection control unit) Right reading lamp Shield W7 (right side of trunk) X18/2 Overhead Console Wiring Diagram, without Sunroof (1 of 2) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Overhead Console Wiring Diagram, without Sunroof (1 of 2) for Mercedes-Benz C300 Sport 4Matic 2012: 51 (not used) 58d Ambient lamp Ass led Ass off Automatic dimming mirror C5h C7i C8d Can b h Can b l Compass display button (usa) Compass module w/ display (usa) Computer data lines system Forward automatic dimming mirror light sensor Fuse 7.5a Garage door opener Garage door opener button 1 Garage door opener button 2 Garage door opener button 3 Garage door opener indicator lamp Glk-class Gnd Hands-free system microphone Hot at all times Inside rearview mirror Interior protection & tow-away protection control unit (if equipped) (center front of roof) Irs led Irs-off Left reading lamp Left rear window glass breakage sensor Lin b4 Mic 1 Mic 2 Nca Overhead control panel electronics (center rear of trunk) Pnk Radio (w/ audio 20) comand control unit (w/o audio 20) Rear sam control unit w/ fuse & relay module (left side of trunk/cargo area) Rear window glass breakage sensor Rearward automatic dimming mirror light sensor Red Right reading lamp Right rear window glass breakage sensor S gb Shield W6/1 (glk class: left rear cargo panel) W7 (right side of trunk) X143/3 X18/19 X18/2 Overhead Console Wiring Diagram, without Sunroof (2 of 2) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Overhead Console Wiring Diagram, without Sunroof (2 of 2) for Mercedes-Benz C300 Sport 4Matic 2012: 49 (center front trunk/cargo area) emergency call system control unit (or red) (under driver's seat) (c-class) w18/3 w16/3 (glk-class) (left side of engine compt) (w/ 2-zone thermatic & 3-zone thermotronic) automatic air conditioning control & operating unit 12v 15r 30 rls 30g 58d C13d C15m C19i C5c Front dome lamp switch Front sam control unit w/ fuse & relay module (left rear of engine compt) Fuse 7.5a Gnd Hot w/ quiescent current cutout relay energized Info Info led Interior lamp automatic function switch Interior lights system Interior protection receiver (c class: integral to interior protection & tow-away protection control unit) Interior protection switch (w/ tow-away protection & interior protection) Interior temperature sensor w/ integrated fan Left front interior lamp Left front reading lamp switch Left interior protection transmitter (c class: integral to interior protection & tow-away protection control unit) Light sensor (rain/light sensor) rain/light sensor (w/ rain/light sensor) (top center of windshield) Lin 2 Ll l 12v Ll r 12v Nca Ntc Overhead control panel electronics (center rear of trunk) Pnk Power tops system Rear dome lamp switch Red Right front interior lamp Right front reading lamp switch Right interior protection transmitter (c class: integral to interior protection & tow-away protection control unit) Sig Sos Sos led Towing sensor button (w/ tow-away protection & interior protection) W16/3 (left side of engine compt) Ws led X18/37
INTERIOR LIGHTS Courtesy Lamps Wiring Diagram (1 of 2) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Courtesy Lamps Wiring Diagram (1 of 2) for Mercedes-Benz C300 Sport 4Matic 2012: 54 (+) (if equipped) left front footwell lamp (if equipped) right front footwell lamp (left rear engine compartment) (rear of glove box) glove box lamp switch 30g 58d 6hd C11c C13d C14m C16s C17c C22i Can-b h Can-b l Computer data lines system Front dome lamp switch Front sam control unit w/ fuse & relay module (left rear of engine compt) Fuse 7.5a Glk-class Glove box lamp Hot w/ circuit 15r relay energized Interior lamp automatic function switch Interior protection switch Left front Left front interior lamp Left front mirror lamp switch Left rear reading lamp Left rear reading switch Left sun visor mirror lamp Ll l 12v Ll r 12v Overhead control panel control module (w/ power glass tilting/ sliding sunroof) (c-class) overhead control panel electronics (w/o power glass tilting/ sliding sunroof) Pnk Reading lamp switch Rear dome lamp Rear dome lamp switch Rear interior lamp Rear sam control unit w/ fuse & relay module (left side trunk/cargo area) Red Right front Right front interior lamp Right front mirror lamp switch Right rear reading lamp Right rear reading switch Right sun visor mirror lamp Sig W/ avantgarde & elegance W/ classic W15/5 (left front footwell) W16/5 W7/1 (glk-class: right side of cargo area/trunk) (c-class: right side of trunk) X29/1 Courtesy Lamps Wiring Diagram (2 of 2) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Courtesy Lamps Wiring Diagram (2 of 2) for Mercedes-Benz C300 Sport 4Matic 2012: 46 (+) (-) (c-class) (glk-class: right rear door assembly) (c-class: rear of right rear door) right rear door control unit (w/ interior lights package) left front door exit & warning lamp (w/ interior lights package) left rear door exit & warning lamp (w/ interior lights package) right front door exit & warning lamp (w/ interior lights package) right rear door exit & warning lamp Ambient lamp Can b h Can b l Computer data lines system Flat wire Front electrical prefuse box (right rear engine compt) Fuse 150a Hot at all times Hot w/ quiescent current cutout relay Ig1 Inside rearview mirror Left front door control module (glk-class: left front door assembly) (c-class: front of left front door) Left front door handle illumination (w/ interior lights package) Left front door handle recess illumination Left luggage compartment lamp (glk-class) Left reading lamp Left rear door control unit (glk-class: left rear door assembly) (c-class: rear of left rear door) Left rear door handle illumination (w/ interior lights package) Left rear door handle recess illumination Left tailgate ambient lamp & warning lamp Mr2 Pnk Red Right front door control module (glk-class: right front door assembly) (c-class: front of left front door) Right front door handle illumination (w/ interior lights package) Right front door handle recess illumination Right luggage compartment lamp Right reading lamp Right rear door handle illumination (w/ interior lights package) Right rear door handle recess illumination Tailgate contact switch Tailgate external operation switch W/ eco start/stop function W/o eco start/stop function W18 (under driver's seat) W7 (glk-class: right side of cargo area/trunk) (c-class: right side of trunk) W7 (right side of trunk) W7/1 (glk-class) w7 (c-class) (glk-class: right side of cargo area/ trunk) (c-class: right side of trunk) Instrument Illumination Wiring Diagram (1 of 2) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Instrument Illumination Wiring Diagram (1 of 2) for Mercedes-Benz C300 Sport 4Matic 2012: 44 (c-class: under driver's seat) (glk-class: left rear cargo panel) (c-class) w18/3 (glk-class) w6/1 14m 16s 17c 19i 30g 58d Automatic transmission mode button C11c C17c C22i C9g Can b h Can b l Can c h Can c l Computer data lines system Electronic selector lever module control module (a/t) (under center console) Exterior lights switch Front cigarette lighter w/ ashtray illumination (w/ smoker package) Front sam control unit w/ fuse & relay module (left rear of engine compt) Front vehicle interior power outlet (w/o smoker package) Fuse 5a Fuse 7.5a Hot at all times Hot w/ circuit 15 relay energized Hot w/ engine circuit 87 relay energized Instrument cluster Instrument illumination & instrument illumination brightness control Lwr Nca Overhead control panel control unit (w/ can) Overhead control panel electronics (w/o can) Pnk/red Red Shift gate symbol illumination Switch illumination W/o xenon lamps W15/5 (left front footwell) W16/5 (left rear engine compt) W18 (under driver's seat) W19 (under right front seat) X18-c3 X18/37 Instrument Illumination Wiring Diagram (2 of 2) for Mercedes-Benz C300 Sport 4Matic 2012 List of elements for Instrument Illumination Wiring Diagram (2 of 2) for Mercedes-Benz C300 Sport 4Matic 2012: 34 (left front footwell) w15/5 (w/ air outlet symbol illumination) 58d Automatic air conditioning control & operating unit Can b h Can b l Computer data lines system Flat wire Front electrical prefuse box (at right rear of engine compt) Fuse 150a Gnd Hot at all times Left center air outlet symbol illumination Left front door central locking interior switch Left front door control module (glk-class: left front door assembly) (c-class: front of left front door) Left front side air outlet symbol illumination Left rear door control unit (glk-class: left rear door assembly) (c-class: rear of left rear door) Left rear power window switch Mr2 Nca Passenger side power window switch Rear air outlet symbol illumination Rear automatic air conditioning operating unit (w/ air outlet symbol illumination thermotronic) Red Right center air outlet symbol illumination Right front door central locking interior switch Right front door control module (glk-class: right front door assembly) (c-class: front of left front door) Right front side air outlet symbol illumination Right rear door control unit (glk-class: right rear door assembly) (c-class: rear of right rear door) Right rear power window switch Trunk lid release button (w/ trunk lid control) driver tailgate control button (w/ tailgate control) W/ air outlet symbol illumination W15/5 (left front footwell) X18/35-c1
