Mercedes-Benz C-class W204/S204/С204 facelift (2011-2015) hot at all times Wiring diagrams

2 1 31 SIG 3 1 2 LIN 2 31 3 4 W/ POWER GLASS TILTING/SLIDING SUNROOF 5 1 2 4 30 CAN-B L CAN-B H 31 AMBIENT LAMP AUTOMATIC BLK WIRE BLU WIRE BRN WIRE BRN/GRY WIRE BRN/RED WIRE COMPASS DISPLAY BUTTON COMPASS MODULE W/ DISPLAY (IF EQUIPPED) COMPUTER DATA LINES SYSTEM DIMMING MIRROR FORWARD AUTOMATIC DIMMING MIRROR LIGHT SENSOR FRONT ELECTRICAL PREFUSE BOX (RIGHT REAR OF ENGINE COMPT) FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE FUSE 2 GARAGE DOOR OPENER GARAGE DOOR OPENER BUTTON 1 GARAGE DOOR OPENER INDICATOR LAMP GARAGE GARAGE DOOR DOOR OPENER OPENER BUTTON 2 BUTTON 3 GRN WIRE GRY WIRE GRY/RED WIRE GRY/YEL WIRE HANDSFREE SYSTEM MICROPHONE HOT AT ALL TIMES HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED INSIDE REARVIEW MIRROR LEFT FRONT DOOR CONTROL UNIT LEFT OUTSIDE MIRROR LEFT READING LAMP LIGHT SENSOR (W/O RAIN/LIGHT SENSOR) LIN 2 31 NAVIGATION, SOUND SYSTEMS NCA WIRE ORG/ WIRE PNK WIRE REARWARD AUTOMATIC AUTOMATIC DIMMING DIMMING MIRROR MIRROR LIGHT SENSOR RED/BLU WIRE RED/WHT WIRE RIGHT READING LAMP USED) YEL WIRE

1 2 3 4 (+) (-) 31 (+) 1 2 5 4 CAN B L CAN B H 30 31 1 3 2 6 7 8 9 31 DATA 10 11 12 FLAT WIRE FLAT WIRE 31 SIG 4 10 5 6 8 7 FLAT WIRE FLAT WIRE FLAT WIRE FLAT WIRE FLAT WIRE FLAT WIRE SIG 4 10 5 SIG 6 7 8 9 ZV-MOT ZV-MOT GND SIG 9 10 CAN-B H CAN-B L BRN WIRE BRN/GRN WIRE BRN/PNK WIRE BRN/RED WIRE CENTRAL MOTOR LOCKING RIGHT FRONT DOOR LOCK CENTRAL W/ KEYLESS GO LOCKING MOTOR W/O KEYLESS GO LEFT FRONT DOOR LOCK COMPUTER DATA LINES SYSTEM FLAT WIRE FLAT WIRE FLAT WIRE FLAT WIRE FLAT WIRE FLAT WIRE FLAT WIRE FLAT WIRE FLAT WIRE FLAT WIRE FLAT WIRE FLAT WIRE FRONT ELECTRICAL PREFUSE BOX (AT RIGHT REAR OF ENGINE COMPT) FUSE FUSE 2 FUSE 3 GRN WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE HOT AT ALL TIMES HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED LEFT FRONT DOOR CONTROL UNIT (FRONT OF LEFT FRONT DOOR) REAR SAM CONTROL UNIT W/ FUSE, RELAY MODULE (RIGHT SIDE OF TRUNK/CARGO AREA) RED WIRE RED/GRY WIRE RED/WHT WIRE RIGHT FRONT DOOR CENTRAL LOCKING INTERIOR SWITCH RIGHT FRONT DOOR CONTROL UNIT (FRONT OF RIGHT FRONT DOOR) RIGHT FRONT DOOR EXIT, WARNING LAMP (W/ INTERIOR LIGHTS PACKAGE) RIGHT FRONT DOOR HANDLE ILLUMINATION (W/ INTERIOR LIGHTS PACKAGE) RIGHT FRONT DOOR HANDLE RECESS ILLUMINATION (W/ INTERIOR LIGHTS PACKAGE) ROTARY TUMBLER SWITCH W/ KEYLESS GO W/O KEYLESS GO WHT WIRE ZV-MOT ZV-MOT GND SIG

10 9 CAN B L CAN B H 30 31 11 SIG SIG (+) 31 30 CAN B L CAN B H 6 3 2 PNK WIRE BLK/GRY WIRE BLK/VIO WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/BLK WIRE BRN/GRN WIRE BRN/RED WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM FL 31 31 FRONT DOME LAMP SWITCH FRONT SAM CONTROL UNIT FUSE 17 W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE 21 GLOVE BOX LAMP) GRN WIRE GRN/WHT WIRE GRY/BLU WIRE GRY/WHT WIRE HOT AT ALL TIMES INTERIOR LAMP AUTOMATIC FUNCTION SWITCH INTERIOR PROTECTION SWITCH LEFT FRONT INTERIOR LAMP LEFT FRONT MIRROR LAMP SWITCH LEFT FRONT READING LAMP SWITCH LEFT REAR LEFT REAR READING LAMP LEFT SUN VISOR MIRROR LAMP PNK 8 9 10 WIRE PNK/YEL WIRE READING SWITCH REAR DOME LAMP REAR DOME LAMP, SWITCH REAR INTERIOR LAMP REAR SAM CONTROL UNIT W/ FUSE, RELAY MODULE (RIGHT SIDE OF TRUNK/CARGO AREA) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/VIO WIRE RELAY ENERGIZED RIGHT FRONT INTERIOR LAMP RIGHT FRONT MIRROR LAMP SWITCH RIGHT FRONT READING LAMP SWITCH RIGHT REAR READING LAMP RIGHT REAR READING SWITCH RIGHT SUN VISOR MIRROR LAMP W/ AVANTGARDE, ELEGANCE W/ CLASSIC W/O CAN W/ CAN YEL WIRE

2 1 4 CAN B H CAN B L 31 2 1 CAN-B H CAN-B L AMBIENT LAMP RIGHT LEFT READING LAMP READING LAMP BLK WIRE BLK/VIO WIRE BLU WIRE BRN WIRE BRN/GRN WIRE BRN/RED WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM FLAT WIRE FRONT ELECTRICAL PREFUSE BOX (RIGHT REAR OF ENGINE COMPT) FUSE FUSE 152 GRN WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE HOT AT ALL TIMES HOT W/ QUIESCENT CURRENT CUTOUT RELAY INSIDE REARVIEW MIRROR LEFT FRONT DOOR HANDLE ILLUMINATION (W/ INTERIOR LIGHTS PACKAGE) LEFT FRONT DOOR HANDLE RECESS ILLUMINATION LEFT LUGGAGE COMPARTMENT LAMP (GLK-CLASS) LEFT REAR DOOR HANDLE ILLUMINATION (W/ INTERIOR LIGHTS PACKAGE) LEFT REAR DOOR HANDLE RECESS ILLUMINATION LEFT TAILGATE AMBIENT LAMP, WARNING LAMP PNK 8 9 WIRE PNK WIRE RED WIRE RIGHT FRONT DOOR HANDLE ILLUMINATION (W/ INTERIOR LIGHTS PACKAGE) RIGHT FRONT DOOR HANDLE RECESS ILLUMINATION RIGHT LUGGAGE COMPARTMENT LAMP RIGHT REAR DOOR HANDLE ILLUMINATION (W/ INTERIOR LIGHTS PACKAGE) RIGHT REAR DOOR HANDLE RECESS ILLUMINATION TAILGATE EXTERNAL OPERATION SWITCH VIO WIRE W/O ECO START/STOP FUNCTION YEL WIRE

ANT GPS SHIELD BLK WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/PNK WIRE BLU/VIO WIRE BRN WIRE CAN D H CAN D L CENTER INSTRUMENT PANEL SPEAKER COMAND CONTROL UNIT (W/ COMAND) COMPUTER DATA LINES SYSTEM DIAGNOSTIC CONNECTOR (DLC) (UNDER LEFT SIDE OF DASH) EMERGENCY CALL SYSTEM ANTENNA (CENTER OF HAT SHELF) EMERGENCY CALL SYSTEM BUTTON EMERGENCY CALL SYSTEM CONTROL UNIT (CENTER FRONT TRUNK/CARGO AREA) FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE 87 GLOBAL POSITIONING SYSTEM ANTENNA SPLITTER (RIGHT FRONT OF TRUNK/ CARGO AREA) GPS GRY WIRE GRY/BLU WIRE GRY/WHT WIRE HOT AT ALL TIMES INFO MB-INFO, BREAKDOWN ASSISTANCE BUTTON MIKR + MIKR - (-) MULTI-FUNCTION ANTENNA (CENTER REAR OF ROOF) MUTE NCA WIRE OVERHEAD CONTROL PANEL ELECTRONICS (W/O CAN) OVERHEAD CONTROL PANEL CONTROL UNIT RADIO (W/ AUDIO 20) REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (RIGHT SIDE OF TRUNK/CARGO AREA) RED/BLU WIRE SHIELD SIG ANT NOT SHIELD 1 2 SOS LED WS LED INFO LED SOS WS INFO CRASH SOUND SYSTEM AMPLIFIER CONTROL UNIT (LEFT SIDE TRUNK/ CARGO AREA) SUPPLEMENTAL RESTRAINT SYSTEM CONTROL UNIT (UNDER FRONT OF CENTER CONSOLE) TEL TELEDIAGNOSIS W/ NAVIGATION W/ SOUND SYSTEM W/O NAVIGATION W/O SOUND SYSTEM YEL WIRE YEL/BLK WIRE YEL/RED WIRE YEL/VIO WIRE

7 6 24 5 GSS, BF RETURN LINE SBE GSS, FA 74 75 COMPUTER DATA LINES SYSTEM CAN E L CAN E H ACOUSTIC TURN SIGNAL LIGHT FUNCTION CHECK ANTI-LOCK BRAKE SYSTEM INDICATOR LAMP BBV HR BBV VL BFS BLK WIRE BLU WIRE BRAKE SYSTEM WARNING LAMP BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CAN B L CAN B H CAN E H CAN E L CAN-E L CAN-E H COMPUTER DATA LINES SYSTEM COOLANT TEMPERATURE GAUGE COOLANT TEMPERATURE WARNING LAMP DIGITAL CLOCK, OUTSIDE TEMPERATURE INDICATOR DISTRONIC WARNING LAMP (IF EQUIPPED) ELECTRONIC STABILITY PROGRAM WARNING LAMP ENGINE DIAGNOSIS INDICATOR LAMP ESP/ASR OFF WARNING LAMP FRONT FOG LAMPS INDICATOR LAMP FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUEL LEVEL INDICATOR FUEL RESERVE INDICATOR LAMP FUSE 28 FUSE 18 GASOLINE GEAR INDICATOR (PRND) GRN WIRE GRN/WHT WIRE GRY/GRN WIRE GRY/YEL WIRE HIGH BEAM INDICATOR LAMP HOT AT ALL TIMES INSTRUMENT CLUSTER INSTRUMENT ILLUMINATION INSTRUMENT ILLUMINATION BRIGHTNESS CONTROL LEFT TURN SIGNAL IND LAMP LIN 1 LOW BEAM INDICATOR LAMP MULTI-FUNCTION DISPLAY PREGLOW INDICATOR LAMP (DIESEL) RED/GRN WIRE RED/GRY WIRE RED/YEL WIRE RIGHT TURN SIGNAL IND LAMP SEAT BELT WARNING LAMP SERVICE BRAKE INDICATOR LAMP SIG SPEEDOMETER SUPPLEMENTAL RESTRAINT SYSTEM CONTROL UNIT (UNDER FRONT OF CENTER CONSOLE) SUPPLEMENTAL RESTRAINT SYSTEM INDICATOR LAMP TACHOMETER, BRIGHTNESS SENSOR TIRE PRESSURE MONITOR WARNING LAMP (IF EQUIPPED) TRANSMISSION MODE DISPLAY (S) TRAVEL DISTANCE DISPLAY VIO/GRN WIRE WARNING BUZZER YEL WIRE YEL/BLU WIRE YEL/RED WIRE

10 9 CAN B L CAN B H 3 2 LWR 7 6 4 5 12 11 10 9 CAN C H CAN C L AUTOMATIC TRANSMISSION MODE BUTTON BLK/PNK WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE COMPUTER DATA LINES SYSTEM 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 16 FUSE 28 FUSE 5 GRN WIRE GRY WIRE GRY/BLU WIRE GRY/BRN WIRE 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 WIRE PNK/RED WIRE RED WIRE RED/BLU WIRE RED/YEL WIRE SHIFT GATE SYMBOL ILLUMINATION SWITCH ILLUMINATION W/O XENON LAMPS WHT WIRE YEL WIRE

2 1 CAN-B H CAN-B L AUTOMATIC AIR CONDITIONING CONTROL, OPERATING UNIT BLU WIRE BRN WIRE BRN/RED WIRE COMPUTER DATA LINES SYSTEM FLAT WIRE FLAT WIRE 8 7 FLAT WIRE FLAT WIRE FRONT ELECTRICAL PREFUSE BOX (RIGHT REAR OF ENGINE COMPT) FUSE 152 GRY WIRE GRY/BLU WIRE HOT AT ALL TIMES LEFT CENTER AIR OUTLET SYMBOL ILLUMINATION LEFT FRONT DOOR CENTRAL LOCKING INTERIOR SWITCH LEFT FRONT SIDE AIR OUTLET SYMBOL ILLUMINATION LEFT REAR POWER WINDOW SWITCH NCA WIRE PASSENGER-SIDE POWER WINDOW SWITCH REAR AIR OUTLET SYMBOL ILLUMINATION RED WIRE RIGHT CENTER AIR OUTLET SYMBOL ILLUMINATION RIGHT FRONT DOOR CENTRAL LOCKING INTERIOR SWITCH RIGHT FRONT SIDE AIR OUTLET SYMBOL ILLUMINATION RIGHT REAR POWER WINDOW SWITCH TRUNK LID RELEASE BUTTON W/ AIR OUTLET SYMBOL ILLUMINATION

1 2 3 4 5 6 IRS OFF IRS LED 11 9 CAN-B H CAN-B L 2 7 8 1 SHIELD MIC 2 GND MIC 1 30 S GB 31 ASS LED ASS OFF 9 10 CAN-B L CAN-B H AMBIENT LAMP AUTOMATIC DIMMING MIRROR BLK WIRE BLU WIRE BRN WIRE BRN/BLK WIRE BRN/GRY WIRE BRN/RED WIRE BRN/WHT WIRE CENTER INTERIOR ROOF) COMPASS MODULE W/ DISPLAY COMPUTER DATA LINES SYSTEM FORWARD AUTOMATIC DIMMING MIRROR LIGHT SENSOR FUSE 46 GARAGE DOOR OPENER GARAGE DOOR OPENER BUTTON 1 GARAGE DOOR OPENER BUTTON 2 GARAGE DOOR OPENER BUTTON 3 GARAGE DOOR OPENER INDICATOR LAMP GRN WIRE GRY WIRE HANDS-FREE SYSTEM MICROPHONE HOT AT ALL TIMES INSIDE REARVIEW MIRROR LEFT READING LAMP LEFT REAR WINDOW GLASS BREAKAGE SENSOR NCA WIRE ORG/ WIRE PNK 17 18 WIRE PNK WIRE RADIO (W/ AUDIO 20) COMAND CONTROL UNIT (W/O AUDIO 20) REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE REAR WINDOW GLASS BREAKAGE SENSOR REARWARD COMPASS DISPLAY BUTTON AUTOMATIC DIMMING MIRROR LIGHT SENSOR RED WIRE RIGHT READING LAMP RIGHT REAR WINDOW GLASS BREAKAGE SENSOR WHT WIRE YEL WIRE

1 2 3 4 5 6 IRS OFF IRS LED 11 9 CAN-B H CAN-B L 2 7 8 1 SHIELD MIC 2 GND MIC 1 31 ASS LED ASS OFF AUTOMATIC DIMMING MIRROR BLK WIRE BLU WIRE BRN WIRE BRN/GRY WIRE BRN/RED WIRE CAN B L CAN B H COMPASS DISPLAY BUTTON COMPASS MODULE W/ COMPUTER DATA LINES SYSTEM DISPLAY (IF EQUIPPED) FORWARD AUTOMATIC DIMMING MIRROR LIGHT SENSOR FUSE 46 GARAGE DOOR OPENER GARAGE DOOR OPENER BUTTON 1 GARAGE DOOR OPENER BUTTON 2 GARAGE DOOR OPENER BUTTON 3 GARAGE DOOR OPENER INDICATOR LAMP GRN WIRE GRY WIRE GRY/RED WIRE GRY/YEL WIRE HANDS-FREE SYSTEM MICROPHONE HOT AT ALL TIMES INSIDE REARVIEW MIRROR LEFT INTERIOR PROTECTION TRANSMITTER LEFT READING LAMP NCA WIRE ORG/ WIRE PNK 14 15 WIRE PNK WIRE RADIO (W/ AUDIO 20) COMAND CONTROL UNIT (W/O AUDIO 20) REAR SAM CONTROL UNIT W/ FUSE, RELAY MODULE REARWARD AUTOMATIC DIMMING MIRROR LIGHT SENSOR RED WIRE RIGHT AMBIENT READING LAMP LAMP WHT WIRE YEL WIRE