Contents Section: Electrical Component Locations All sections

Electrical Component Locator: Other Mercedes-Benz Pullman W221

BUZZERS, RELAYS & TIMERS

ComponentLocation
Charge Air RelayRight rear of engine compartment.
Circuit 15 RelayIn rear fuse/relay box. (Схема №7)
Engine Electronic/Chassis RelayRight rear of engine compartment. (Схема №13)
Fuel Pump RelayIn rear fuse/relay box. (Схема №7)
Intank Fuel Pump RelayRight rear of engine compartment.
Motronic RelayRight rear of engine compartment.
Rear Screen Blind RelayIn rear fuse/relay box. (Схема №7)
Rear Window Defrost RelayIn rear fuse/relay box. (Схема №7)
Secondary Air Pump RelayRight rear of engine compartment. (Схема №13)
Starter RelayRight rear of engine compartment. (Схема №13)
Towing Sensor RelayIn rear fuse/relay box. (Схема №7)
Wiper On/Off RelayIn left front fuse/relay module. (Схема №8)
Wiper Park Position Heater RelayIn left front fuse/relay module. (Схема №8)
Wiper Stage 1 & 2 RelayIn left front fuse/relay module. (Схема №8)

BUZZERS, RELAYS & TIMERS LOCATION

CIRCUIT PROTECTION DEVICES

ComponentLocation
Left Front Fuse/Relay ModuleLeft rear of engine compartment. (Схема №6)
Rear Fuse/Relay ModuleUnder right rear seat. (Схема №9)
Right Front Fuse/Relay ModuleRight rear of engine compartment. (Схема №10)
Interior Right Front Footwell Terminal Block And Fuse BlockRight Front Footwell. (Схема №16)and (Схема №17).

CIRCUIT PROTECTION DEVICES LOCATION

CONTROL UNITS

ComponentLocation
AB Control ModuleIn center console.
Active Body Control (ABC) Control ModuleLeft rear of engine compartment.
Electronic Selector Lever Control ModuleUnder center console, at base of selector lever assembly.
Electronic Stepper Motor Control ModuleIn center console.
Engine Control Module (ME-SFI)Right rear of engine compartment. (Схема №12)
ETC Control ModuleRight rear of engine compartment.
Left Front Door Control ModuleIn left front door.
Left Front ESA Control Module (With Memory)Under left front seat.
Left Front SAM Control ModuleIn fuse/relay box, left side. (Схема №8)
Pneumatic Suspension With ADS Control ModuleIn left fuse/relay box.
PSE Control ModuleLeft side of trunk. (Схема №11)
Rear A/C Electronic Blower RegulatorIn rear of center console.
Rear Multi-Contour Backrest Control ModuleIn driver's backrest.
Rear SAM Control ModuleUnder right rear seat. (Схема №9)
Right Front Door Control ModuleIn right front door.
Right Front ESA Control Module (With Memory)Under right front seat.
Right Front SAM Control ModuleIn fuse/relay box, right side. (Схема №10)
Right Rear Door Control ModuleIn right rear door.
Roof Control Unit Control ModuleCenter front of roof.
Steering Column ModuleAt top of steering column.
Suction Cooling Fan Control ModuleBehind right front bumper.
Traction System Hydraulic UnitLeft front of engine compartment. (Схема №6)

CONTROL UNITS LOCATION

MOTORS

ComponentLocation
Air Distribution (Up/Down) Actuator MotorBehind center of dash.
Air Suspension Compressor UnitUnder right front of vehicle.
Backrest Adjustment Motor (Fore/Aft) (Left Front)In backrest of left front seat.
Backrest Adjustment Motor (Fore/Aft) (Right Front)In backrest of right front seat.
Coolant Circulation PumpIn left rear of engine compartment.
Electric Air Pump (Engine 112)Top front of engine. (Схема №14)
Electric Air Pump (Engine 113)On front center of engine.
Electric Air Pump (Engine 275)On left front of engine. (Схема №4)
ESC Motor GroupOn steering column.
Fresh Air/Recirculated Air Actuator MotorBehind right side of dash.
Front Seat Adjustment Motor (Fore/Aft)Under left front seat.
Front Seat Adjustment Motor (Fore/Aft)Under right front seat.
Front Seat Adjustment Motor (Raise/Lower)Under left front seat.
Front Seat Adjustment Motor (Raise/Lower)Under right front seat.
Fuel PumpLeft rear of vehicle.
HCS PumpRight front of engine compartment.
Head Restraint Adjustment Motor (Raise/Lower) (Left Front)In backrest of left front seat.
Head Restraint Adjustment Motor (Raise/Lower) (Right Front)In backrest of right front seat.
High-Pressure/Return PumpBehind left headlamp unit.
Left Center Vent Diverter Flap Actuator MotorRight side of steering column.
Left Center Vent Temperature Control Actuator MotorRight side of steering column.
Left Defroster Vent Flap Actuator MotorRight side of steering column.
Left Footwell Flap Actuator MotorUnder center console.
Left Front ESA Motor Group (With Memory)Under left front seat.
Left Headlamp Range AdjusterLeft front of engine compartment.
Multicontour Seat Pneumatic PumpLeft side of trunk.
Rear Blower MotorIn rear of center console.
Rear Seat Adjustment Motor (Raise/Lower) (Left Front)Under left front seat.
Rear Seat Adjustment Motor (Raise/Lower) (Right Front)Under right front seat.
Rear Window Sun Shade MotorUnder center of rear window shelf.
Recirculated Air Flap ActuatorRear center of engine compartment.
Right Center Vent Diverter Flap Actuator MotorBehind center of dash.
Right Defroster Vent Flap Actuator MotorUnder center of dash.
Right Footwell Flap Actuator MotorUnder center console.
Right Front ESA Motor Group (With Memory)Under right front seat.
Right Headlamp Range AdjusterRight front of engine compartment.
Right Seat Fore/Aft Adjustment MotorUnder right rear seat.
Seat Cushion Adjustment Motor (Fore/Aft) (Left Front)Under left front seat.
Seat Cushion Adjustment Motor (Fore/Aft) (Right Front)Under right front seat.
Sliding/Pop-Up Roof Drive AssemblyAt front center of roof.
Telescopic Adjustment Motor (In/Out)Right side of steering column.
Throttle Valve Actuator (Engine 112)Rear of intake manifold. (Схема №15)
Throttle Valve Actuator (Engine 275)Rear top center of engine. (Схема №1)
Windshield Washer Fluid PumpRight front of engine compartment.
Wiper MotorLeft rear of engine compartment. (Схема №8)

MOTORS LOCATION

SENDING UNITS & SENSORS

ComponentLocation
ABS Lateral Acceleration SensorUnder right rear seat. (Схема №6)
A/C Multi-Function SensorRight rear of engine compartment.
Air Suspension Pressure SensorUnder right front of vehicle.
Ambient Temperature Display Temperature SensorBehind left side of front bumper. (Схема №8)
ATA Tow SensorUnder right rear seat.
Brake Pad Wear Sensor (Left Front)Behind left front wheel.
Brake Pad Wear Sensor (Left Rear)Behind left rear wheel.
Brake Pad Wear Sensor (Right Front)Behind right front wheel.
Brake Pad Wear Sensor (Right Rear)Behind right rear wheel.
Camshaft Hall Effect SensorOn right front side of engine.
Camshaft Hall Effect Sensor (Left)At rear of left valve cover. (Схема №3)
Camshaft Hall Effect Sensor (Right)At rear of right valve cover. (Схема №3)
Camshaft Hall Sensor (Engine 112)On front of engine. (Схема №14)
Charge Air Temperature Sensor (275)On top front of engine. (Схема №1)
Charge Pressure Control Vacuum TransducerOn rear of engine. (Схема №2)
Coolant Temperature Sensor (Engine 112)Top front of engine. (Схема №14)
Coolant Temperature Sensor (Engine 275)On front of engine. (Схема №4)
Crankshaft Position Sensor (Engine 112)Left rear of engine. (Схема №14)
Crankshaft Position Sensor (Engine 113)Left rear of engine block.
Crankshaft Position Sensor (Engine 275)On top rear of engine. (Схема №3)
Driver-Side Frontal Acceleration SensorLeft front of engine compartment.
ECT SensorOn front center of engine.
EGR (ARF) Vacuum Transducer (Engine 112)Rear of intake manifold. (Схема №15)
EGR Pressure TransducerCenter rear of engine.
ESP Brake Pressure SensorBehind left headlamp unit. (Схема №6)
ESP Yaw Rate SensorUnder right rear seat.
Evaporator Temperature SensorIn center console.
Front Knock Sensor (Left) (Engine 275)On front left side of engine. (Схема №5)
Front Knock Sensor (Right) (Engine 275)On right front side of engine. (Схема №5)
Fuel Level SensorCenter front of trunk.
Fuel Tank Pressure SensorCenter front of trunk.
Hot Film MAF SensorAt center rear of engine compartment.
Hot Film Mass Air Flow Sensor With Intake Air Temperature Sensor (Engine 112)Rear of intake manifold. (Схема №14)
Intake Air Temperature SensorRear center of engine compartment.
Left Airbag And Left Window Airbag SensorUnder left rear seat.
Left Front Body Acceleration SensorLeft side of engine compartment.
Left Front Level SensorAt left front wheelhouse.
Left Front Plunger Travel SensorLeft rear of engine compartment.
Left Front VSSLeft front wheelhouse.
Left Front Wheel Acceleration SensorLeft side of engine compartment.
Left Heater Core Temperature SensorIn center console.
Left Knock Sensor 2Below intake manifold.
Left Knock Sensor 2 (Engine 112)Under intake manifold. (Схема №15)
Left O2S 1 (Before TWC)Left rear of engine compartment.
Left O2S 2 (After TWC)Under left front of vehicle.
Left Rear Heater Core Temperature SensorIn center console.
Left Rear VSSLeft rear wheelhouse.
Membran Travel Sensor ConnectorLeft rear of engine compartment.
Oil Sensor (Level, Temperature, Quality)Lower right side of engine.
Oil Sensor (Level, Temperature, Quality) (Engine 112)In engine oil pan. (Схема №15)
Oil Sensor (Level, Temperature, Quality) (Engine 275)Lower left side of engine. (Схема №4)
Passenger Seat Occupied And Child Seat Recognition SensorRight front of engine compartment.
Passenger-Side Frontal Acceleration SensorRight front of engine compartment.
Pedal Value SensorOn accelerator pedal. (Схема №12)
Pressure Sensor (Downstream Of Throttle Valve Actuator)Top front of engine. (Схема №2)
Pressure Sensor (Engine 112)Top front of engine. (Схема №14)
Pressure Sensor (Left & Right)On right front of engine. (Схема №1)
PTS Sensor Assembly (Rear Bumper)Behind rear bumper.
Rear Axle Level SensorUnder rear center of vehicle.
Rear Evaporator Temperature SensorRear of center console.
Rear Knock Sensor (Left) (Engine 275)On rear left side of engine. (Схема №5)
Rear Knock Sensor (Right) (Engine 275)On right rear side of engine. (Схема №5)
Refrigerant Temperature SensorIn left front of engine compartment.
Right Airbag And Right Window Airbag SensorUnder right rear seat.
Right Front Body Acceleration SensorRight side of engine compartment.
Right Front Level SensorRight front wheelhouse.
Right Front Plunger Travel SensorRight rear of engine compartment.
Right Front VSSRight front wheelhouse.
Right Front Wheel Acceleration SensorRight side of engine compartment.
Right Heater Core Temperature SensorIn center console.
Right Knock Sensor 1Below intake manifold.
Right Knock Sensor 1 (Engine 112)Under intake manifold. (Схема №15)
Right O2S 1 (Before TWC)Right rear of engine compartment.
Right O2S 2 (After TWC)Under right front of vehicle.
Right Rear Body Acceleration SensorRight side of trunk.
Right Rear Heater Core Temperature SensorRear of center console.
Right Rear Plunger Travel SensorAt right "C" pillar.
Right Rear VSSAt right rear wheelhouse.
Wheel Speed Sensor (4)At each wheel. (Схема №6)

SENDING UNITS & SENSORS LOCATION

SOLENOIDS & SOLENOID VALVES

ComponentLocation
Air Pump Switch-Over ValveOn right front of engine compartment. (Схема №14)
Air Pump Switch-Over Valve (Engine 112)Near air pump on front of engine. (Схема №14)
Divert Air Switch-Over ValveOn rear of engine. (Схема №2)
Fuel Injector Cylinder 1On right side of engine.
Fuel Injector Cylinder 2On right side of engine.
Fuel Injector Cylinder 3On right side of engine.
Fuel Injector Cylinder 4On right side of engine.
Fuel Injector Cylinder 5On left side of engine.
Fuel Injector Cylinder 6On left side of engine.
Fuel Injector Cylinder 7On left side of engine.
Fuel Injector Cylinder 8On left side of engine.
Fuel Injectors (Engine 112)Top of right & left cylinder heads. (Схема №14)
Left Cylinder Bank Switch-Off ValveLeft side of engine. (Схема №4)
Left DuovalveLeft rear of engine compartment.
Left Front Axle Damper Valve AssemblyAt left front wheelhouse.
Left Front Seat Belt Comfort Feature SolenoidAt base of left "B" pillar.
Left Head Restraint Raise ValveUnder left rear window shelf.
Left Rear Axle Damper Valve AssemblyAt left rear wheelhouse.
Left Rear Seat Belt Comfort Feature SolenoidUnder left rear window shelf.
Level Regulating Valve AssemblyUnder right front of vehicle.
Middle Head Restraint Raise ValveUnder center of rear window shelf.
Purge Control ValveLeft rear of engine compartment.
Rear Refrigerant Shut-Off ValveAt left front wheelhouse.
Release Switch/Solenoid Valve ConnectorLeft rear of engine compartment.
Right Cylinder Bank Switch-Off ValveRight side of engine. (Схема №4)
Right DuovalveLeft rear of engine compartment.
Right Head Restraint Raise ValveUnder right rear window shelf.
Right Rear Axle Damper Valve AssemblyAt right rear wheelhouse.
SPS P-ValveOn power steering pump.
Variable Intake Manifold Switchover Valve (Engine 112)At front of intake manifold. (Схема №15)

SOLENOIDS & SOLENOID VALVES LOCATION

SWITCHES

ComponentLocation
Brake Fluid Indicator SwitchLeft rear of engine compartment.
ECL SwitchRight front of engine compartment.
ECL/Windshield Washer Fluid Level SwitchRight front of engine compartment.
Engine Hood Close Switch (ATA)Right front of vehicle.
Left Front Door CA MicroswitchIn left front door.
Left Rear Door Pull Contact MicroswitchIn left rear door handle.
Left Rear Seat Belt Buckle/Belt Comfort Feature SwitchIn left rear seat belt buckle.
Parking Brake SwitchOn parking brake support bracket.
Right Rear Seat Belt Buckle/Belt Comfort Feature SwitchIn right rear seat belt buckle.
Stop Lamp SwitchOn top of brake pedal.
Tilt Adjustment MicroswitchOn steering column.
Trunk Lid CA MicroswitchAt rear of trunk lid.
Trunk Lid Lock Switch (CF)At rear of trunk lid.
Windshield Washer Fluid Level Indicator SwitchRight front of engine compartment.

SWITCHES LOCATION

MISCELLANEOUS

ComponentLocation
Alarm Siren With Auxiliary BatteryAt left front wheelhouse.
BatteryRight side of trunk.
CTEL/GPS Roof AntennaAt rear center of roof.
CTEL InterfaceUnder right rear seat.
CTEL Transmitter-ReceiverLeft side of trunk.
Cylinder 1 Ignition CoilOn right side of engine.
Cylinder 2 Ignition CoilOn right side of engine.
Cylinder 3 Ignition CoilOn right side of engine.
Cylinder 4 Ignition CoilOn right side of engine.
Cylinder 5 Ignition CoilOn left side of engine.
Cylinder 6 Ignition CoilOn left side of engine.
Cylinder 7 Ignition CoilOn left side of engine.
Cylinder 8 Ignition CoilOn left side of engine.
Data Link ConnectorAt upper left footwell.
Driver ETR SquibBottom of left "B" pillar.
Fanfare HornsBehind front bumper.
Generator (Engine 275)On front of engine. (Схема №5)
Ignition Coils (Engine 112)On top of right & left cylinder heads. (Схема №14)
Left Front IR Receiver UnitIn left front door.
Left Window Airbag SquibAt left "C" pillar.
LR ETR SquibAt left "C" pillar.
Passenger ETR SquibBottom of right "B" pillar.
Passenger Side AB Squib 1Right side of dash.
Passenger Side AB Squib 2Right side of dash.
Right Front Door Airbag SquibIn right front door.
Right Front IR Receiver UnitIn right front door.
Right Window Airbag SquibAt right "C" pillar.
RR ETR SquibAt right "C" pillar.
Sound AmplifierLeft side of luggage compartment.
Top Rear Window Antenna AmplifierCenter rear of roof.

MISCELLANEOUS LOCATION

CONNECTORS

ComponentLocation
X4/10Front passenger footwell.
X8/4 (10 Pin)Right front of trunk.
X18 (14 Pin)Left front footwell.
X20/1At left "C" pillar.
X25/8 (28 Pin)At right "C" pillar.
X28/12 (10 Pin)In right front door.
X30/4Right front door sill.
X30/5Left front door sill.
X30/6Upper left footwell.
X35/28 (6 Pin)Right rear of trunk.
X35/66 (14 Pin)At left front door sill.
X55/3Under left front seat.
X55/4Under right front seat.
X58/3Under right rear seat.
X62/6 (5 Pin)Right side of engine compartment.
X62/7 (5 Pin)Left side of engine compartment.
X62/8 (D)Under right rear seat.
X62/8 (E)Under left rear seat.
X64/3Right rear of engine compartment.
X85/1 (10 Pin)Left rear of engine compartment.
X86Right rear of engine compartment.

CONNECTORS LOCATION

GROUNDS

ComponentLocation
W2Right side of engine compartment.
W3/6Behind right headlight unit.
W6At left front of trunk.
W7/1Near right taillight.
W9Left side of engine compartment.
W10At right rear of trunk.
W11/2Right front of engine.
W11/3Left front of engine compartment.
W13At left "C" pillar.
W15/2At left footwell.
W16/5At left rear of engine compartment.
W16/6Right rear of engine compartment.
W17/1Under left rear seat.
W26/27Right front of engine compartment.
W28/1At left front door sill.
W28/2At right front door sill.
W36/1At right front footwell.
W36/2At right front footwell.
W50At right front door sill.
W50/1At left front door sill.
W50/2Under right rear seat.

GROUNDS LOCATION