Wiring diagrams for Mercedes-Benz S-class
Access to the online wiring database Mercedes-Benz S-class W140 (1991-1998)
A/c circuit (1 of 2)
A/c circuit (1 of 2)
Anti-lock brake circuits, with acceleration slip regulation (1
of 2)
Anti-lock brake circuits, with acceleration slip regulation (1 of 2)
Anti-lock brake circuits, with traction control (1 of 2)
Anti-lock brake circuits, with traction control (1 of 2)
Wiring diagram engine performance 3.2ls (1 of 2)
Wiring diagram engine performance 3.2ls (1 of 2)
Instrument illumination circuit (1 of 2)
Instrument illumination circuit (1 of 2)
Power distribution circuit (1 of 2)
Power distribution circuit (1 of 2)
Wiring diagram engine performance 4.2ls (1 of 3)
Wiring diagram engine performance 4.2ls (1 of 3)
Wiring diagram engine performance 5.0ls (1 of 3)
Wiring diagram engine performance 5.0ls (1 of 3)

Wiring Diagrams for Mercedes-Benz S-class W140 (1991-1998)

  • Description:
    Engines: 3.2L, 4.2L, 5.0L
  • Systems: 66 Components: 1205
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  • A PDF file with a set of all electrical circuits will be sent to your email.
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  • Finding components on wiring diagrams
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List of systems:

List of components:

ACTIVE CHARCOAL FILTER SWITCH AIR DISTRIBUTION SWITCH ASR OFF SWITCH ASR OFF SWITCH RIGHT REAR AXLE VSS AUTOMATIC CLIMATE CONTROL, A/C COMPRESSOR, BASE MODULE KICKDOWN SWITCH BACKREST ADJUST LIMIT SWITCH BRAKE FLUID LEVEL SWITCH CENTRAL LOCKING INSIDE SWITCH CENTRAL LOCKING INTERIOR SWITCH CL TRUNK LID SWITCH CLOSED THROTTLE POSITION SWITCH COMBINATION SWITCH COMFORT, SPORT SWITCH COMFORT/SPORT SWITCH COOLANT LEVEL SWITCH CRUISE CONTROL SWITCH CUSHION ADJUST LIMIT SWITCH DRIVER'S SEAT BELT SWITCH ELECTRONIC STEERING COLUMN ADJUSTMENT SWITCH ELECTRONIC STEERING COLUMN SWITCH ENGINE HOOD SWITCH EXTERIOR LAMP SWITCH FADER SWITCH FANFARE HORN SWITCH FOG LAMP SWITCH FRONT CENTER CONSOLE LEFT FRONT POWER WINDOW SWITCH FRONT CENTER CONSOLE LEFT REAR POWER WINDOW SWITCH FRONT CENTER CONSOLE RIGHT REAR POWER WINDOW SWITCH HAZARD FLASHER SWITCH HEATED REAR WINDOW SWITCH HORNS, TRANSMISSION OVERLOAD PROTECTION SWITCH IGNITION SWITCH IGNITION/ STARTER SWITCH INTERIOR CL SWITCH INTERIOR LIGHTS SWITCH KEY-IN IGINITION SWITCH KICKDOWN SWITCH/ TRANSMISSION MODE LEFT DOOR SWITCH LEFT FRONT DOOR LOCK SWITCH LEFT FRONT DOOR SWITCH LEFT FRONT POWER SEAT SWITCH GROUP LEFT FRONT SEAT BELT BUCKLE SWITCH LEFT FRONT SEAT BELT BUCKLE SWITCH RIGHT FRONT SEAT BELT BUCKLE SWITCH LEFT FRONT SEAT BELT BUCKLE/ COMFORT FEATURE SWITCH LEFT FRONT SEAT HEATER SWITCH LEFT OR RIGHT FRONT POWER SEAT SWITCH LEFT REAR DOOR SWITCH LEFT REAR DOOR SWITCH RIGHT REAR DOOR SWITCH LEFT REAR HEAD RESTRAINT RAISE/ LOWER SWITCH LEFT REAR HEAD RESTRAINT RAISE/LOWER SWITCH LEFT REAR POWER WINDOW SWITCH LEFT REAR SEAT ADJUSTMENT SWITCH LEFT REAR SEAT BELT BUCKLE SWITCH LEFT REAR SEAT BELT BUCKLE/ COMFORT FEATURE SWITCH LEFT REAR SEAT CUSHION ADJUSTMENT SWITCH LEFT REAR SEAT HEATER SWITCH LIGHT SWITCH LOCK CATCH/ TRUNK LID MICRO- SWITCH OIL LEVEL SWITCH OUTSIDE REARVIEW MIRROR SWITCH PARKING BRAKE SWITCH REAR HEAD RESTRAINT RELEASE SWITCH REAR HEAD RESTRAINT SWITCH REAR POWER WINDOWS SAFETY SWITCH REAR WINDOW DEFROSTER SWITCH REAR WINDOW SUN SHADE SWITCH RHR RELEASE SWITCH RIGHT DOOR SWITCH RIGHT FRONT DOOR LOCK SWITCH RIGHT FRONT DOOR SWITCH RIGHT FRONT DOOR SWITCH, RIGHT FRONT SEAT BELT BUCKLE/BELT COMFORT SWITCH RIGHT FRONT POWER SEAT SWITCH GROUP RIGHT FRONT POWER WINDOW SWITCH RIGHT FRONT SEAT BELT BUCKLE SWITCH RIGHT FRONT SEAT BELT BUCKLE/ COMFORT FEATURE SWITCH RIGHT FRONT SEAT HEATER SWITCH RIGHT REAR DOOR SWITCH RIGHT REAR HEAD RESTRAINT RAISE/ LOWER SWITCH RIGHT REAR HEAD RESTRAINT RAISE/LOWER SWITCH RIGHT REAR POWER WINDOW SWITCH RIGHT REAR SEAT ADJUSTMENT SWITCH RIGHT REAR SEAT BELT BUCKLE SWITCH RIGHT REAR SEAT BELT BUCKLE/ COMFORT FEATURE SWITCH RIGHT REAR SEAT CUSHION ADJUSTMENT SWITCH RIGHT REAR SEAT HEATER SWITCH SAFETY SWITCH SEAT BELT EXTENDER SWITCH SEAT BELT EXTENDER SWITCH ASR OFF SWITCH SLIDING/ POP-UP ROOF SWITCH SLIDING/ POPUP ROOF SWITCH STARTER LOCK-OUT/ BACKUP LAMP SWITCH STOP LAMP SWITCH TO EXTERIOR LAMP SWITCH TRANSMISSION OVERLOAD PROTECTION SWITCH TRANSMISSION RANGE "D" CONTACT SWITCH TRUNK LID LOCK SWITCH TURN SIGNAL SWITCH UPSHIFT DELAY SWITCH- OVER VALVE WARM/ COOL AIR SWITCH WARM/COOL AIR SWITCH WASHER SWITCH WINDSHIELD WASHER FLUID LEVEL SWITCH WIPER SWITCH

1 2 3 4 5 6 PNK WIRE 2 11 9 18 19 17 16 8 10 13 20 12 PNK WIRE BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/BRN/VIO WIRE BLK/GRN WIRE BLK/GRN/PPL WIRE BLK/GRN/RED WIRE BLK/GRN/VIO WIRE BLK/GRY WIRE BLK/GRY/BLU WIRE BLK/GRY/RED WIRE BLK/PNK WIRE BLK/PNK/WHT WIRE BLK/RED WIRE BLK/RED/GRN WIRE BLK/RED/VIO WIRE BLK/RED/WHT WIRE BLK/RED/YEL WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLK/YEL/GRN WIRE BLK/YEL/PNK WIRE BLK/YEL/RED WIRE BLK/YEL/WHT WIRE BLL/RED WIRE BLU WIRE BLU/ BRN WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/GRN/WHT WIRE BLU/GRY WIRE BLU/PNK WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BLU/YEL/RED WIRE BRN BLU/ WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/BLU/WHT WIRE BRN/GRN WIRE BRN/GRN/VIO WIRE BRN/GRY WIRE BRN/GRY/YEL WIRE BRN/PNK WIRE BRN/RED WIRE BRN/RED/GRN WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE GRN BRN/ WIRE GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/PPL WIRE GRN/RED WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/BLK/VIO WIRE GRY/BLK/YEL WIRE GRY/BLU WIRE GRY/BLU/WHT WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/GRN/VIO WIRE GRY/GRN/WHT WIRE GRY/PNK WIRE GRY/RED WIRE GRY/RED/VIO WIRE GRY/RED/WHT WIRE GRY/RED/YEL WIRE GRY/VIO WIRE GRY/VIO/WHT WIRE GRY/WHT WIRE GRY/WHT/GRN WIRE GRY/WHT/VIO WIRE GRY/YEL WIRE GRY/YEL/GRN WIRE GRY/YEL/VIO WIRE GRY/YEL/WHT WIRE GYR/RED WIRE NCA (OR WIRE NCA WIRE ORG/ WIRE PNK 1 2 3 4 5 6 7 8 9 10 WIRE PNK PNK WIRE PNK WIRE PNK/ ENGINE CONTROLS BASE MODULE WIRE PNK/BLK WIRE PNK/BLU WIRE PNK/GRN WIRE PNK/GRN/BLK WIRE PNK/GRY WIRE PNK/RED WIRE PNK/VIO WIRE PNK/WHT WIRE PNK/YEL WIRE PNK/YEL/BLK WIRE RED WIRE RED/ GRY WIRE RED/BLK WIRE RED/BLK/YEL WIRE RED/BLU WIRE RED/BLU/BLK WIRE RED/BLU/WHT WIRE RED/BLU/YEL WIRE RED/GRN WIRE RED/GRN/BLK WIRE RED/GRN/WHT WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RED/WHT/YEL WIRE RED/YEL WIRE RED/YEL/WHT WIRE RUN WIRE VIO WIRE VIO/BLK WIRE VIO/BLU WIRE VIO/GRN WIRE VIO/WHT WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/GRN WIRE WHT/GRY WIRE WHT/PNK WIRE WHT/PNK/VIO WIRE WHT/RED WIRE WHT/VIO WIRE WHT/YEL WIRE YEL WIRE YEL/BLK WIRE YEL/BLK/GRN WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRN WIRE YEL/GRN/BLK WIRE YEL/GRY WIRE YEL/PNK WIRE YEL/RED WIRE YEL/VIO WIRE YEL/WHT WIRE

1 2 3 6 15 16 18 19 SN 1 1 4 3 ESP/ SPS 1 11 3 ASR/ SPS 2 3 4 5 6 TK DF HD SN 2 TK SN 1 2 3 AHL EHL 2 3 W/ ELECTRONIC ACCELERATOR W/O ELECTRONIC ACCELERATOR 3/1 7/3 5.1 5/1 5/2 9/1 5/1 12/1 12/2 7 8 UR 12/1 12/2 14/3 12/1 14/2 14/3 14/1 15 SN 2 17/2 17/1 32/1 22/3 22/1 22/2 29/2 28/1 30 ZV 15 TK 36/2 36/1 31/2 36/2 HOT AT ALL TIMES 37/2 37/1 47 -1 47 -2 65/1 68/2 69/1 69/2 74/2 74/1 71/2 20/1 78/1 82/2 78/2 82/1 82/1 82/2 87 ABS 1995 VFTC 1995-96 1995-98 1995-99 1996-99 A/C COMPRESSOR A/C SYSTEM ABS ASR WARNING IND. WARNING IND. SPEEDOMETER ADS WARNING IND. AH EH AHR AHR ANTI- THEFT ALARM SYSTEM, INFRARED REMOTE CONTROL, REAR HEATED SEATS ANTI-THEFT ALARM SYSTEM, INFRARED REMOTE CONTROL, REAR HEAD RESTRAINTS ASR DFA HL ASR FUNCTION IND. ASV EVL USV AVL ASV VRA MR-A AUS TNA 87 UG 87 UG 31 31 AUTOMATIC DIMMING INSIDE REARVIEW MIRROR AUX TAIL AUXILIARY FAN PRERESISTOR BACK-UP LAMPS CIRCUIT BACKREST ADJUSTMENT BACKREST FWD/ BKWD BACKREST HEAD RESTRAINT UP/DOWN BASE MODULE BLS LAM ZAS BRAKE WARNING IND BRS OEF HAS CAN 3 8 1 CAN A CAN B CAN H+ CAN 3 19 CAN L CAN L- 3 18 CAN-H CAN-L CAN-H CANADA ONLY CENTER AIR OUTLET CONTROLS CENTER CONSOLE CENTER CONSOLE REAR POWER WINDOWS CENTRAL LOCKING, CLOSING ASSIST COMPRES- SOR CLUTCH COMPUTER DATA LINES COMPUTER DATA LINES SYSTEM CONVENIENCE FEATURE COOLANT TEMP GAUGE COPPER BRAID COUPE ONLY COUPE, SEDAN CRUISE CONTROL SYSTEM CTEL TRANSMITTER/ RECEIVER CUSHION ANGLE DAYTIME RUNNING LAMPS DAYTIME RUNNING LAMPS DAYTIME RUNNING LAMPS DF HR 87 ABS BLS DF HR MDF HR DF HL MDF HL DF HR MDF HR DF HL MDF HL DF VL DF VL 87 KP DFA HA DFA VL DFA VR DFAVL DFA VR DIAGNOSTIC MODULE DN TO LIMIT DN TO LIMIT UP DN UP TO LIMIT DN TO LIMIT UP TO LIMIT UP DN UP TO LIMIT DOME/READING LAMPS W/ SHUT OFF DELAY DRIVER AIRBAG SQUIB ELECTRICALLY ADJUSTABLE, HEATED DRIVER'S SIDE OUTSIDE REARVIEW MIRROR ELECTRICALLY ADJUSTABLE, HEATED FRONT PASSENGER OUTSIDE REARVIEW MIRROR ELECTROLYTIC CAPACITOR ELECTRONIC ACCELERATOR/ CRUISE CONTROL/IDLE ELECTRONIC CLOCK ELECTRONIC SPEEDOMETER ETS OFF EXCEPT 1995-96 EXCEPT 1995-98 FLASH TO PASS FLASH- TO- PASS HI LO FORWARD BACKWARD FRONT A/C CIRCUIT FRONT CIGAR LIGHTER FRONT CIGAR LIGHTER W/ ASHTRAY ILLUMINATION FRONT PASSENGER AIRBAG SQUIB FUEL INJECTOR VALVES FUEL LEVEL GAUGE FUEL PUMPS HEAD LH HEAD RESTRAINT UP/DOWN HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM WIPER/ WASHER SYSTEM HEATED REAR WINDOW HEATED SEATS HEATED WINDSHIELD WASHER SYSTEM THERMOSWITCH HI FLASH HI FLASH LO HI LO HIGH LOW HORIZONTAL ADJUSTMENT HOT AT ALL TIMES HOT AT ALL TIMES TERMINAL HOT AT ALL TIMES TERMINAL BLOCK 2 30 HOT IN ACC OR RUN HOT IN ACC, RUN OR START HOT IN ACC, RUN, START HOT IN ACCY, RUN, OR START HOT IN OFF, ACCY HOT IN PARK OR HEAD HOT IN RUN HOT IN RUN OR START IGNITION COILS IN DASH CONTROLLER INFRARED CENTRAL LOCKING INJ 3 INJ. #4 INJ. #2 INJ. #5 INJ. #1 INJ. #6 INSTR CLUST SYSTEM INSTRU- MENT CLUSTER SYSTEM INSTRUMENT CLUSTER INSTRUMENT CLUSTER SYSTEM INT LO IPW IPS IP- KSK GETR UGETR LEFT AUXILIARY FAN LEFT DUOVALVE LEFT DUOVALVE RIGHT DUOVALVE LEFT FOGLAMP LEFT FRONT AXLE DAMPER LEFT FRONT DOOR CLOSING ASSIST MICROSWITCH LEFT FRONT DOOR IR RECEIVER LEFT FRONT DOOR ROTARY TUMBLER MICROSWITCH LEFT FRONT EMERGENCY TENSIONING RETRACTOR SQUIB LEFT FRONT ONLY LEFT FRONT RIGHT FRONT LEFT LOW BEAM HEADLAMP LEFT REAR AXLE DAMPER LEFT REAR DOOR CLOSING ASSIST MICROSWITCH LEFT REAR DOOR PLUG CONNECTION LEFT REAR VANITY MIRROR LEFT REAR WHEEL SPEED LEFT SEAT BELT EXTENDER LEFT SIDE AIRBAG SQUIB LEFT SUN VISOR W/ ILLUMINATED VANITY MIRROR LEFT TURN IND LEFT/RIGHT SEAT MEMORY, DRIVER MEMORY STEERING COLUMN ADJUST LH HEAD LH HEAD HEAD LW DF MALFUNCTION INDICATION TERMINAL BLOCK MARKER AUX TAIL FOG MARKER FOG MIRROR POSITION MIRROR SELECT OFF HI OFF PARK OFF PARK HEAD OFF PARK RH OFF RH OFF RH PARK OFF RH PARK HEAD LH OFF RH PARK LH HEAD OIL PRESSURE GAUGE ON OFF PKS S-B S+B POSITION 1 POSITION 2 POSITION 3 PPL 2 RAISE/ LOWER READ- ING READ- ING DOME REAR AIR OUTLET REAR BACKREST ADJUSTMENT REAR CIGAR LIGHTER REAR CLIMATE CONTROL REAR HEAD RESTRAINT REAR ILLUMINATED VANITY MIRROR POWER WINDOWS REAR WINDOW DEFROST ELEMENT REAR WINDOW DEFROSTER RH LH RH OFF PARK RIGHT AUXILIARY FAN RIGHT DUOVALVE RIGHT FRONT AXLE DAMPER RIGHT FRONT AXLE VSS RIGHT FRONT DOOR CLOSING ASSIST MICROSWITCH RIGHT FRONT DOOR IR RECEIVER RIGHT FRONT DOOR ROTARY TUMBLER MICROSWITCH RIGHT FRONT EMERGENCY TENSIONING RETRACTOR SQUIB RIGHT FRONT POWER SEAT RIGHT HIGH BEAM HEADLAMP RIGHT LOW BEAM HEADLAMP RIGHT REAR AXLE VSS RIGHT REAR DOOR CLOSING ASSIST MICROSWITCH RIGHT REAR DOOR PLUG CONNECTION RIGHT REAR DOOR ROTARY TUMBLER MICROSWITCH RIGHT REAR SEAT RIGHT REAR VANITY MIRROR RIGHT SEAT BELT EXTENDER RIGHT SIDE AIRBAG SQUIB RIGHT SUN VISOR W/ ILLUMINATED VANITY MIRROR RIGHT TURN IND ROTARY TUMBLER/ TRUNK LID MICROSWITCH S-B S+B DF H SEAT CUSHION HEIGHT SEAT CUSHION INCLINE BACKREST FWD/ BKWD SEAT FORWARD/ BACKWARD SEAT FWD/BACK SEAT HEIGHT REAR SEAT HEIGHT FRONT SEAT HEIGHT REAR SEATBELT WARNING MODULE SEDAN SEDAN SEDAN, COUPE SEE SYSTEM DIAGRAM FOR PIN NUMBER SLIDING/ POP-UP ROOF SN 1 SN 2 SN 2 DF HD TK SOLID STATE SPARK PLUG #1 SPARK PLUG #6 SPARK PLUG #2 SPARK PLUG #5 SPARK PLUG #3 SPARK PLUG #4 SPEED- OMETER SPS IPS P- SRS IND STANDING OFF RH PARK STANDING RH STARTING/CHARGING SYSTEM STEERING COLUMN IN/OUT STEERING COLUMN UP/DOWN SUPPLEMENTAL RESTRAINTS SYSTEM TAIL/ PARK TAIL/ PARK TAIL/ PARK TELE- PHONE TELESCOPIC ADJUSTMENT TERMINAL BLOCK TERMINAL BLOCK X/4 TEST CONNECTION FOR DIAGNOSIS TILT ADJUSTMENT TK TK DF HD TRANSMISSION SELECTOR LEVER TRUNK LID CLOSING ASSIST MICROSWITCH TRUNK LID IR RECEIVER UP DN UP DN TO LIMIT UP TO LIMIT VERTICAL ADJUSTMENT VR 35 36 37 38 VRA MR-A VVR+ W/ ADS W/ ASR W/ ELECTRONIC SUSPENSION W/ TRACTION CONTROL W/O ADS W/O ASR W/O TRACTION CONTROL WARNING BUZZER WARNING MODULE WARNING SYSTEM WARNING SYSTEMS WIPER/ WASHER SYSTEM ZA+ VVL ZA+ ZA- HAL ZA- ZR+ ZR- ZRS 31