Mercedes·C300 4Matic·2008 Mercedes C300 4matic·Wiring
Wiring diagram

2008 Mercedes C300 4matic — power distribution

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Power distribution

A A U T S RSS EIN RSS AUS RES 150A F E D B C 40A 25A 7.5A 80A 40A 80A 100A 60A 7.5A 20A 150A 70A 100A 40A 40A 30A 30A 15A 200A 80A 400A 125A 60A FRONT ELECTRICAL PREFUSE BOX BATTERY STARTER REAR SAM CONTROL MODULE W/ FUSE & RELAY MODULE GENERATOR FRONT ELECTRICAL PREFUSE BOX 32 30 31 27 21 26 25 24 C80 9 C7L 2 C128 4 10 C8D C3I 12 5 C12I 2 3 A E A E A E C114 C113 C111 C112 C115 A A E C112 C115 E 7 6 5 4 3 2 1 CA 7 6 4 5 3 2 1 CB CP3 2 1 C1V 2 CP1 CP2 1 C2V C9I 50 47 35 49 4 5 2 C117 C126 C116 3 RED BLK RED BRN RED RED/YEL BLK RED RED RED RED RED/YEL RED/BLK RED/BLU RED RED RED RED RED RED RED/ GRN BRN RED/ RED/ VIO BLU RED/ GRN RED/ YEL RED/ BLK WHT/ GRN VIO/ BLU RED RED RED RED BRN/BLU RED/GRY RED/BLU BRN/GRN BLK BLK BLK BLK RED RED FUSE 100 FUSE 90 FUSE 102 QUIESCENT CURRENT CUTOUT RELAY RES FUSE 107 FUSE 104 FUSE 101 FUSE 89 FUSE 105 FUSE 106 FUSE 103 FUSE 40 FUSE 46 FUSE 64 FUSE 61 INTERIOR FUSE BOX RES FUSE 128 FUSE 116 FUSE 117 FUSE 126 RES FUSE 108 FUSE 88 RES FUSE 109 RES FUSE 110 FUSE 91 REAR PREFUSE BOX RES FUSE 123 RES FUSE 125 RES FUSE 121 RES FUSE 122 RES FUSE 120 FUSE 119 FUSE 129 FUSE 113 FUSE 111 FUSE 114 RES FUSE 124 FUSE 112 FUSE 115 RES FUSE 132 RES FUSE 134 RES FUSE 133 RES FUSE 131 RES FUSE 135 RES FUSE 130 (AT RIGHT REAR OF ENGINE COMPT) (LEFT SIDE OF TRUNK/CARGO AREA) (RIGHT SIDE OF TRUNK) (BEHIND LEFT END OF DASH) (AT RIGHT REAR OF ENGINE COMPT) (RIGHT SIDE OF LUGGAGE COMPT) (NOT USED) (NOT USED) (NOT USED) (NOT USED) (W/ AUTOMATIC TAILGATE) (IF EQUIPPED) (NOT USED) (NOT USED) (NOT USED) (NOT USED) (IF EQUIPPED) (NOT USED) (NOT USED) (NOT USED) (W/ TAXI) (W/ THERMOTRONIC) W7 TO FUSE 108 (DIAGRAM 1 OF 5) BATTERY SENSOR A/C HOUSING LEFT REAR DOOR CONTROL UNIT FUSE CARRIER (DIAGRAM 3 OF 5) TO FUSE 16 (DIAGRAM 4 OF 5) TO FUSE 18 (DIAGRAM 4 OF 5) TO FUSE 27 (DIAGRAM 5 OF 5) TO CIRCUIT 15 RELAY (DIAGRAM 2 OF 5) TO FUSE 87 (DIAGRAM 2 OF 5) INTERIOR PROTECTION & TOW AWAY PROTECTION CONTROL UNIT REAR WINDOW ANTENNA FM ANTENNA AMPLIFIER, REAR WINDOW ANTENNA AMPLIFIER 1, DAB BAND III ANTENNA & TV1 & DAB BAND III ANTENNA, TAILGATE CONTROL UNIT TO DC/AC CONVERTER CONTROL UNIT (DIAGRAM 3 OF 5) ALARM SIREN FROM FUSE 103 (DIAGRAM 1 OF 1) ADAPTIVE DAMPING SYSTEM CONTROL UNIT FRONT PASSENGER SEAT CONTROL UNIT DRIVER SEAT CONTROL UNIT SUPPLEMENTAL RESTRAINT SYSTEM CONTROL UNIT COMBUSTION ENGINE & AIR CONDITIONING W/ INTEGRATED CONTROL FAN MOTOR SPECIAL PURPOSE VEHICLE MULTIFUNCTION CONTROL UNIT REAR BLOWER MOTOR TO FUSE 27 (DIAGRAM 5 OF 5)
L K I H C G G B 15A 7.5A 7.5A 5A 7.5A 7.5A 7.5A 20A 30A 30A 20A 30A 15A 15A 7.5A 30A 15A REAR SAM CONTROL MODULE W/ FUSE & RELAY MODULE TAILGATE WINDSHIELD WIPER RELAY REAR SAM CONTROL MODULE W/ FUSE & RELAY MODULE FUEL PUMP RELAY MODULE OVERHEAD CONTROL PANEL CONTROL MODULE OVERHEAD CONTROL PANEL ELECTRONICS 3 CG 5 2 1 2 3 2 1 3 1 C15H 5 4 C11T 3 6 6 7 C3I 9 C3I 13 10 C3I 8 1 C3I 1 2 C13A 5 3 C12I 7 C12I 6 PNK/ YEL PNK/ YEL PNK/ YEL GRY/BLU GRY/BLU GRY/BLU GRY/BLU GRY/ BLU BLU GRY/ RED/GRN BRN BLU NCA GRY/ NCA YEL PNK/ RED BRN GRY BLU GRY/ NCA BRN BRN NCA BRN RED/BLU (OR RED/VIO) BLK/YEL RED/BLK RED/GRN RED/BLU RED/BLK RED/GRN RED/GRY RED/WHT RED/YEL RED/GRN (OR PNK/RED) RED/BLU PNK/RED BLK/RED RED/WHT FUSE 38 CIRCUIT 15 RELAY SEAT ADJUSTMENT RELAY RES FUSE 48 FUSE 39 FUSE 41 FUSE 58 FUSE 57 FUSE 54 FUSE 56 FUSE 59 CIRCUIT 15R RELAY (1) FUSE 86 FUSE 87 FUSE 84 FUSE 43 FUSE 60 FUSE 42 FUSE 83 FUSE 37 FUSE 71 FRONT CIGARETTE LIGHTER W/ ASHTRAY ILLUMINATION FRONT VEHICLE INTERIOR POWER OUTLET VEHICLE INTERIOR POWER OUTLET (LEFT SIDE OF TRUNK/CARGO AREA) (LEFT SIDE OF TRUNK/CARGO AREA) (UNDER RIGHT FRONT SEAT) (NOT USED) (W/ TOWING HITCH) (IF EQUIPPED) (IF EQUIPPED) (NOT USED) (IF EQUIPPED) (IF EQUIPPED) (IF EQUIPPED) (IF EQUIPPED) (IF EQUIPPED) (W/ SMOKER PACKAGE) (W/ NON- SMOKER PACKAGE) (W/ REAR SOCKET) (W/ CAN) (W/O CAN) W19 TO FUSE 42 (DIAGRAM 2 OF 5) FROM FUSE 61 (DIAGRAM 1 OF 1) LEFT REAR DOOR CONTROL UNIT RIGHT REAR DOOR CONTROL UNIT TRAILER RECOGNITION CONTROL MODULE PARKTRONIC CONTROL UNIT LEFT OUTER RADAR SENSOR, FRONT BUMPER FROM FUSE 41 (DIAGRAM 2 0F 5) FROM FUSE 46 (DIAGRAM 1 0F 5) TO FUSE 85 (DIAGRAM 3 0F 5) TO FUSE 74 (DIAGRAM 3 0F 5) FUEL PUMP CONTROL MODULE DRIVER SEAT NECK-PRO HEAD RESTRAINT SOLENOID & FRONT PASSENGER SEAT NECK-PRO HEAD RESTRAINT SOLENOID EMERGENCY CALL SYSTEM CONTROL UNIT MULTICONTOUR SEAT PNEUMATIC PUMP DVD PLAYER, LEFT REAR DISPLAY & RIGHT REAR DISPLAY SATELLITE DIGITAL AUDIO RADIO (SDAR) CONTROL UNIT SDAR/HIGH DEFINATION TUNER CONTROL UNIT TO FRONT SAM CONTROL W/ FUSE & RELAY MODULE (DIAGRAM 4 OF 5) BACKUP CAMERA VOLTAGE SUPPLY MODULE DIGITAL AUDIO BROADCASTING CONTROL UNIT TO FUSE 76 (DIAGRAM 3 0F 5)
1 2 1 2 T U 30A 30A R I L J J R H 40A 20A 25A RES 15A 15A 7.5A 7.5A 7.5A 40A 15A 7.5A 50A 50A 7.5A 5A REAR SAM CONTROL MODULE W/ FUSE & RELAY MODULE REAR SAM CONTROL MODULE W/ FUSE & RELAY MODULE REAR WINDOW DEFROSTER RELAY DC/AC CONVERTER CONTROL UNIT 1 1 1 2 2 8 5 3 2 1 3 4 6 5 3 2 1 2 C14I 3 C15H 1 6 3 C14I 4 5 7 C11T 2 1 5 2 6 1 2 C2G 1 7 C15H 4 PNK/GRN RED/BLK RED RED RED RED/GRY RED/WHT ORG/BLK ORG/BLU PNK ORG/BLU PNK ORG/BLK PNK/GRN PNK/GRN PNK/GRN PNK/GRN PNK/GRN BRN RED/BLU RED/GRN PNK/GRN RED/GRN PNK/BLK RED/WHT RED/BLU RED RED RED/VIO RED/WHT RED/GRN CIRCUIT 15R RELAY(2) RES FUSE 78 RES FUSE 80 FUSE 68 FUSE 67 FUSE 82 FUSE 85 FUSE 74 FUSE 79 FUSE 81 FUSE 77 FUSE 76 FUSE 72 CARGO AREA SOCKET FUSE 49 FUSE 51 FUSE 50 FUSE 75 FUSE 73 FUSE 69 FUSE 70 115V SOCKET RIGHT REAR DOOR CONTROL UNIT FUSE CARRIER LEFT REAR DOOR CONTROL UNIT FUSE CARRIER (LEFT SIDE OF TRUNK/CARGO AREA) (LEFT SIDE OF TRUNK/CARGO AREA) (RIGHT SIDE OF TRUNK) (NOT USED) (NOT USED) (NOT USED) (NOT USED) (IF EQUIPPED) (IF EQUIPPED) (IF EQUIPPED) (IF EQUIPPED) W/ STANDARD EQUIPMENT W/ 115V SOCKET (W/ AUXILIARY JACK) (W/ CITY ASSIST SYSTEM) (NOT USED) (NOT USED) (W/ SOUND SYSTEM) (IF EQUIPPED) (IF EQUIPPED) (IF EQUIPPED) W7 FROM FUSE 60 (DIAGRAM 2 OF 5) FROM FUSE 84 (DIAGRAM 2 OF 5) TO FUSE 70 (DIAGRAM 3 OF 5) TO FUSE 75 (DIAGRAM 3 OF 5) SOUND SYSTEM AMPLIFIER CONTROL UNIT RADAR SENSOR CONTROL UNIT KEYLESS GO CONTROL UNIT TV TUNER CONTROL UNIT WEIGHT SENSING SYSTEM(WSS) CONTROL UNIT MEDIA INTERFACE CONTROL UNIT FROM VEHICLE INTERIOR POWER OUTLET (DAIGRAM 2 OF 5) FROM FUSE 67 (DIAGRAM 3 0F 5) FROM FUSE 74 (DIAGRAM 3 0F 5) FROM REAR SAM CONTROL MODULE W/ FUSE & RELAY MODULE (DIAGRAM 1 OF 5) TIRE PRESSURE MONITOR CONTROL UNIT REAR BASS SPEAKER AMPLIFIER RIGHT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR LEFT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR FROM FRONT ELECTRICAL PREFUSE BOX (DIAGRAM 1 OF 5) EIGHT REAR DOOR CONTROL UNIT LEFT REAR DOOR CONTROL UNIT
15A K 5A N Q P 0 O M N M 7.5A 10A 10A 30A D E 40A 7.5A 5A 7.5A 7.5A 30A 7.5A 15A 20A 15A FRONT SAM CONTROL MODULE W/ FUSE & RELAY MODULE FAN RELAY MODULE FRONT SAM CONTROL MODULE W/ FUSE & RELAY MODULE FRONT SAM CONTROL MODULE W/ FUSE & RELAY MODULE SECONDARY AIR INJECTION RELAY 13 C19I C9G 4 C5C 8 5 C2I 6 C11C 4 3 C14M 6 C1M 2 C15M 4 16S 8S 7 8 6 C5C 10 C2I 3 4 C13D 1 1 C5C C3M 6 2 C4I C3M 5 3 C4I 6 C2I C3M 3 6 C4I C14M 7 2 C6I GRY/BLU RED/BLU RED/GRN RED RED/GRY BLK/BLU BLK/BLU BLK RED RED RED RED/BLU RED/GRN RED/BLU RED/VIO RED/BLU RED/BRN RED/BLK RED/BLU BLK/RED RED/VIO BLK/RED BRN/ORG BLK/RED FUSE 31B CIRCUIT 15R RELAY CIRCUIT 15 RELAY RESERVE RELAY FUSE 18 FUSE 16 FUSE 10 FUSE 30 FUSE 29 ENGINE CIRCUIT 87 RELAY FUSE 23 FUSE 22 FUSE 24 FUSE 32 FUSE 16 FUSE 11 FUSE 13 FUSE 15 FUSE 17 FUSE 12 (LEFT REAR OF ENGINE COMPARTMENT) (LEFT REAR OF ENGINE COMPARTMENT) (LEFT REAR OF ENGINE COMPARTMENT) (NOT USED) (A/T) (NOT USED) (NOT USED) (W/ SULEV), (NOT USED) (NOT USED) (IF EQUIPPED) (W/ 2-ZONE THERMATIC & 3-ZONE THERMOTRONIC) (IF EQUIPPED) TO FUSE 15 (DIAGRAM 4 0F 5) TO ENGINE CIRCUIT 87 RELAY (DIAGRAM 4 0F 5) FROM FUSE 89 (DIAGRAM 1 OF 5) FROM FUSE 105 (DIAGRAM 1 OF 5) WIPER PARK HEATER WIPER MOTOR RIGHT FRONT HEADLAMP UNIT LEFT FRONT HEADLAMP UNIT & CIRCUIT 15 CONNECTOR SLEEVE EXTERIOR LIGHTS SWITCH ELECTRONIC SELECTOR LEVEL MODULE CONTROL MODULE FROM POWER OUTLETS & CIGARETTE LIGHTER (DIAGRAM 2 OF 5) FROM FAN RELAY MODULE (DIAGRAM 4 0F 5) TO SECONDARY AIR INJECTION RELAY (DIAGRAM 4 0F 5) REAR SAM CONTROL MODULE W/ FUSE & RELAY MODULE CYLINDER 1 IGNITION COIL, CYLINDER 2 IGNITION COIL, CYLINDER 3 IGNITION COIL, RADIO INTERFERENCE SUPPRESSION CAPACITOR 1 & CIRCUIT 87 M1I CONNECTOR SLEEVE COOLANT THERMOSTAT, INTAKE MANIFOLD TUMBLE FLAP SWITCHOVER VALVE & INTAKE MANIFOLD SWITCHOVER VALVE PREMAIR SENSOR LEFT INTAKE CAMSHAFT HALL SENSOR, LEFT EXHAUST CAMSHAFT HALL SENSOR, CYLINDER 4 IGNITION COIL, CYLINDER 5 IGNITION COIL, CYLINDER 6 IGNITION COIL, RADIO INTERFERENCE SUPPRESSION CAPACITOR 1 & CIRCUIT 87 M1E CONNECTOR SLEEVE COMBUSTION ENGINE & AIR CONDITIONING W/ INTEGRATED CONTROL FAN MOTOR ME-SFI(ME) CONTROL MODULE PURGE CONTROL VALVE & ACTIVATED CHARCOAL FILTER SHUTOFF VALVE FROM FUSE 16 (DIAGRAM 4 0F 5) FROM ENGINE CIRCUIT 87 RELAY (DIAGRAM 4 0F 5) TO FUSE 14 (DIAGRAM 5 0F 5) TO FUSE 1 (DIAGRAM 5 0F 5) STEERING COLUMN CONTROL UNIT DIAGNOSTIC CONNECTOR AUDIO/ COMAND CONTROL PANEL OVERHEAD CONTROL PANEL MODULE AUTOMATIC AIR CONDITIONING CONTROL & OPERATING UNIT AUDIO/ COMAND DISPLAY SUPPLEMENTAL RESTRAINT SYSTEM CONTROL UNIT UPPER CONTROL PANEL CONTROL UNIT PANORAMIC SLIDING ROOF CONTROL MODULE
30Z DATA F S Q P 7.5A 30 UB 20A 30Z CAN-E L CAN-E H CAN-B H CAN-B L DATA 30Z 31 20A 30A 30A 7.5A 40A 25A 7.5A FRONT SAM CONTROL MODULE W/ FUSE & RELAY MODULE ELECTRIC STEERING LOCK CONTROL UNIT AUTOMATIC TRANSMISSION NEUTRAL POSITION SWITCH C12S C11C 2 C5C 10 4 C4I CA 2 1 4 3 5 7 8 6 1 2 CC 10 C10T 3 4 2 CB 1 2 3 4 5 6 7 8 9 10 8 4 C7I 3 1 2 1 7 C2I 9 RED RED RED RED RED/GRN RED/GRN WHT/RED RED BRN BRN BRN WHT/RED BRN/RED GRN/WHT GRN RED/GRN RED RED RED/GRN RED RED RED RED/WHT RED/GRY RED/YEL RED/GRN RED/BRN RED/GRY FUSE 1 FUSE 20 FUSE 2 FUSE 14 FUSE 3 FUSE 27 FUSE 19 FUSE 28 FUSE 26 ELECTRONIC IGNITION SWITCH CONTROL UNIT (LEFT REAR OF ENGINE COMPARTMENT) (LEFT FRONT FOOTWELL) (TOP OF STEERING COLUMN) (NOT USED) (NOT USED) (W/ AUDIO 20 RADIO), (W/ AUDIO 50) W/O REAR BATTERY W/ REAR BATTERY W/O KEYLESS GO W/ KEYLESS GO W15/5 FROM FUSE 16 (DIAGRAM 4 OF 5) FROM FUSE 32 (DIAGRAM 4 OF 5) RADIO RADIO W/ AUTO PILOT SYSTEM INSTRUMENT CLUSTER LEFT FRONT DOOR CONTROL UNIT RIGHT FRONT DOOR CONTROL UNIT ELECTRONIC STABILITY PROGRAM CONTROL UNIT COMAND CONTROL UNIT FROM FUSE 101 (DIAGRAM 1 OF 5) FROM FUSE 111 (DIAGRAM 1 OF 5) COMPUTER DATA LINES SYSTEM