Mercedes-Benz S320 1995 - 1995-96 MERCEDES-BENZ S320, S420 & S500

Mercedes-Benz S320 1995 - BUZZERS, RELAYS & TIMERS

Mercedes-Benz S320 1995 BUZZERS, RELAYS & TIMERS

Component	Component Location
Air Injection Relay	On fuse/relay box, in engine compartment. See Fig. 1 .
Anti-Theft Alarm Relay	On fuse/relay box, in engine compartment.
Auxiliary Fan Relays (2)	On fuse/relay box, in engine compartment.
Combination Relay	On fuse/relay box, in engine compartment.
Convenience Relay	On fuse/relay box, in engine compartment.
Dome Lamp Delay Relay	In front dome lamp assembly.
Fuel Pump Relay	On right side of luggage compartment, behind trim panel. See Fig. 2 .
Oxygen Sensor 2 Heated Relay	In fuse/relay box, in engine compartment.
Pump After-Run Control Relay	On fuse/relay box, in engine compartment.
Transmission Cooling Fan Relay	On left front of engine compartment, behind headlamp.
Transmission Upshift Delay Relay	On fuse/relay box, in engine compartment.

Mercedes-Benz S320 1995 - CIRCUIT PROTECTION DEVICES

Mercedes-Benz S320 1995 CIRCUIT PROTECTION DEVICES

Component	Component Location
Auxiliary Fuse Box	In luggage compartment, behind right trim panel.
Fuse F2 (LH Control Unit)	In module box, on right rear of engine compartment. See Fig. 2 .
Fuse/Relay Box	On left rear corner of engine compartment.

Mercedes-Benz S320 1995 - CONTROL UNITS

Mercedes-Benz S320 1995 CONTROL UNITS

Component	Component Location
ADS Control Module	In module box, on right rear of engine compartment. See Fig. 2 .
Anti-Theft Alarm Control Unit	On right side of luggage compartment, behind trim panel.
Base Module	In module box, on right rear of engine compartment. See Fig. 2 .
Convenience Control Unit	On right side of luggage compartment, behind trim panel.
Diagnostic Module (California)	In module box, on right rear of engine compartment. See Fig. 2 .
Electronic Accelerator Control Unit	In module box, on right rear of engine compartment. See Fig. 2 .
Engine Control Module	In module box, on right rear of engine compartment. See Fig. 2 .
Infrared Remote Control Unit	On right side of luggage compartment, behind trim panel.
Lamp Failure Monitoring Unit	In left rear of engine compartment. See Fig. 3 .
LH Control Unit	In module box, on right rear of engine compartment. See Fig. 2 .
Mirror/Steering Column Adjustment Control Unit (W/ Memory)	Behind right side of dash.
PSE Control Module	Right side of rear seat.
Pulse Module	Lower left front corner of engine.

Mercedes-Benz S320 1995 - MOTORS

Mercedes-Benz S320 1995 MOTORS

Component	Component Location
Adjustable Steering Column Motor	Right side of column, under lower dash panel.
Blower Motor	Center front of cowl.
Sliding/Pop-Up Sunroof Drive Assembly	On top of left rear wheelwell.

Mercedes-Benz S320 1995 - SENDING UNITS & SENSORS

Mercedes-Benz S320 1995 SENDING UNITS & SENSORS

Component	Component Location
Air Mass Sensor	On left side of engine. See Fig. 4 .
Camshaft Position Sensor	On left front side of camshaft. See Fig. 4 .
Coolant Temperature Sensor	On top front of engine. See Fig. 4 .
Crankshaft Position Sensor	Left rear of engine. See Fig. 4 .
Engine Coolant Temperature Sensor (A/C)	Top left front corner of engine.
Evaporator Temperature Sensor	On left side of evaporator housing, above accelerator pedal.
Front Body Acceleration Sensors	On left & right side of engine compartment.
Heater Core Temperature Sensors	Behind center of dashboard, below radio.
Heated Oxygen Sensor 1 (Before TWC)	In exhaust manifold. See Fig. 1 .
Heated Oxygen Sensor 2 (After TWC)	In exhaust manifold.
In-Car Temperature Sensor (A/C)	In dome lamp assembly.
Intake Air Temperature Sensor	Behind left headlamp. See Fig. 1 .
Outside Temperature Sensor	Left rear side of engine compartment.
Rear Body Acceleration Sensor	In front center of luggage compartment.
Refrigerant Pressure Sensor	Left front corner of engine compartment.
Refrigerant Temperature Sensor	Left front corner of engine compartment.
Steering Angle Sensor	On top portion of steering column.
Sun Sensor	Top center of dash.
Vehicle Load Sensor	On right rear of vehicle.
Wheel Acceleration Sensor	In right front corner of engine compartment.

Mercedes-Benz S320 1995 - SOLENOIDS & SOLENOID VALVES

Mercedes-Benz S320 1995 SOLENOIDS & SOLENOID VALVES

Component	Component Location
Activated Charcoal Filter Actuator	Center front of cowl, behind panel. Near blower motor.
Adjustable Camshaft Timing Solenoid	On top front of engine. See Fig. 4 .
Air Injection Pump Switchover Valve	Right front of engine. See Fig. 2 .
Axle Damper Valve Assemblies	On axle to each wheel.
Control Valve (A/T)	On left side of transmission.
EGR Switchover Valve	Right front of engine. See Fig. 2 .
Electromagnetic Air Injection Pump Clutch	Lower right front of engine. See Fig. 4 .
Fuel Injection Valves	Top left side of engine. See Fig. 4 .
Kickdown Solenoid Valve	Left side of transmission.
Purge Switchover Valve	Left side of engine compartment. See Fig. 1 .
Upshift Delay Switchover Valve	On left side of transmission. See Fig. 1 .
Valve Block (A/C)	Behind right side of dash.

Mercedes-Benz S320 1995 - SWITCHES

Mercedes-Benz S320 1995 SWITCHES

Component	Component Location
Kickdown Switch (A/T)	Under accelerator pedal.
Transmission Overload Protection Switch	On left side of transmission, near engine. See Fig. 4 .

Mercedes-Benz S320 1995 - MISCELLANEOUS

Mercedes-Benz S320 1995 MISCELLANEOUS

Component	Component Location
Alarm Horn	Right front of engine compartment.
Blower Regulator	Center front of cowl, behind panel. Near blower motor.
CHECK ENGINE Malfunction Indicator Lamp	In instrument cluster. See Fig. 2 .
Data Link Connector (38-Pin)	In module box, on right rear of engine compartment. See Fig. 2 .
Diagnostic Module Test Connector	In module box, on right rear of engine compartment. See Fig. 2 .
Exterior Lamp Failure Indicator Lamp (A1e14)	In instrument cluster. See Fig. 3 .
Pneumatic Control Unit	On right side of rear seat.

Mercedes-Benz S320 1995 - CONNECTORS

Mercedes-Benz S320 1995 CONNECTORS

Component	Component Location
X1/6	At left kick panel.
X1/7	At right kick panel.
X4 (2-Pin)	At left rear of engine compartment, at fuse & relay box.
X4/5 (1-Pin)	At right side of luggage compartment.
X4/10	At right rear of engine compartment.
X4/17	At top left of left front footwell.
X4/20 (4-Pin)	At left rear of engine compartment, at fuse & relay box.
X4/23 (2-Pin)	Under foot plate, at right front footwell.
X4/28	Under steering column.
X6	Under center of dash.
X8/6	At top front of left front door.
X8/7	At top front of left front door.
X9 (1-Pin)	At left rear of engine compartment.
X11	At left center of engine compartment.
X11/2 (9-Pin)	At left center of engine compartment.
X11/3 (9-Pin)	At right rear of engine compartment.
X11/4 (35-Pin)	At right rear of engine compartment.
X11/7 (4-Pin)	At center of heater intake plenum.
X11/13 (12-Pin)	At center of heater intake plenum.
X11/14 (2 or 4-Pin)	At right side of heater intake plenum.
X11/15 (16-Pin)	At right kick panel.
X11/21 (3-Pin)	At right side of heater intake plenum.
X11/22 (16-Pin)	Under left side of dash.
X11/26	At left side of luggage compartment.
X18	At top left of left front footwell.
X20/1	At top right of rear partition panel.
X20/2	At left kick panel.
X20/3 (4-Pin)	At left rear of engine compartment.
X21/1	At top left of left front footwell.
X22/5 (4-Pin)	At right side of heater intake plenum.
X22/8	At right side of left front footwell.
X22/9 (4-Pin)	At right front of left front footwell.
X24 (6-Pin)	At left rear of engine compartment.
X26	At left rear of engine compartment.
X26/2 (36-Pin)	At right side of engine compartment.
X26/27	Behind left side of front bumper.
X27	At right rear of engine compartment.
X27/6	Near coolant reservoir.
X28/4 (2-Pin)	Under steering column.
X28/5 (2-Pin)	Behind steering wheel.
X29/1 (2-Pin)	In glove box.
X29/2 (2-Pin)	Under center of dash.
X29/3	Behind center dash vents.
X29/4 (2-Pin)	At left rear of engine compartment.
X33/14 (16-Pin)	Under right front foot plate.
X34/3	In right front door jamb.
X34/5	At right rear door jamb.
X35/1	At left kick panel.
X35/2	At right kick panel.
X35/3	At left "B" pillar.
X35/4	At right "B" pillar.
X35/5 (12-Pin)	At right kick panel.
X35/7 (18-Pin)	At right side of heater intake plenum.
X35/8 (16-Pin)	At right side of heater intake plenum.
X35/15	At right kick panel.
X35/16 (8-Pin)	At right side of heater intake plenum.
X35/20 (12-Pin)	At right kick panel.
X35/21	Behind right headlamp.
X35/22 (1-Pin)	At left kick panel.
X35/26	Under right front foot plate.
X35/27	Under right side of dash.
X35/28	At right rear of luggage compartment.
X35/35	At left kick panel.
X35/51 (4-Pin)	At right kick panel.
X35/58 (10-Pin)	At left rear of engine compartment.
X35/59	Under right front foot plate.
X35/60	At right kick panel.
X35/61	Under right front foot plate.
X35/62	Under right front foot plate.
X35/63	In control module box.
X35/64 (18-Pin)	Under right front foot plate.
X35/65	At left rear of engine compartment.
X35/66	Under right front foot plate.
X36/3 (2-Pin)	Under rear seat, at right side of propeller shaft tunnel.
X39/3 (4-Pin)	Under center of dash.
X39/4 (4-Pin)	Under left front of center console.
X39/10 (12-Pin)	Under right front of center console.
X39/14	Under right front of center console.
X39/36 (4-Pin)	Under center console, left of shifter lever.
X42/13 (1-Pin)	Behind radio.
X42/15	At right front of engine compartment.
X43 (3-Pin)	Behind center of dash.
X44/4	Under rear seat cushion.
X46/5 (3-Pin)	At right side of heater intake plenum.
X47/2	At right rear of engine.
X47/3	At right rear of engine.
X47/4	At right rear of engine.
X49/2 (10-Pin)	At right side of left front footwell.
X49/4 (1-Pin)	In fuse & relay box.
X50/1 (4-Pin)	At right side of left front footwell.
X54/7	Behind left side of dash.
X55/3	Under front of left front seat.
X55/4	Under front of left front seat.
X59/1 (2-Pin)	At left center of engine compartment.
X62/6	At right rear of engine compartment.
X62/7	At left side of engine compartment.
X62/8	Under right rear of vehicle, near fuel filter.
X62/14	At left front wheel.
X62/15	At right front wheel.
X72/1 (2-Pin)	Under center of dash.
X83/1 (2-Pin)	At left front of right front footwell.
X83/8 (1-Pin)	At left side of engine compartment.
X83/13	Under steering column.
X85/1 (2-Pin)	At left rear of engine compartment.
X87/1	At right rear of engine compartment.
X88/2	Under right front foot plate.
X96/1 (4-Pin)	At right side of heater intake plenum.

Mercedes-Benz S320 1995 - GROUNDS

Mercedes-Benz S320 1995 GROUNDS

Component	Component Location
W1	Behind instrument cluster. See Fig. 1 & Fig. 3 .
W3	At left front wheelwell, near ignition coil. See Fig. 2 .
W3/1	At right front wheelwell, near ignition coil. See Fig. 2 .
W3/2	At left side of engine compartment. See Fig. 1 .
W3/3	At right side of engine compartment. See Fig. 1 .
W6	At left side of luggage compartment.
W6/1	At left rear of luggage compartment. See Fig. 3 .
W7/1	At right rear of luggage compartment. See Fig. 2 & Fig. 3 .
W9/1	Behind left headlamp. See Fig. 1 & Fig. 3 .
W9/2	Behind right headlamp. See Fig. 1 & Fig. 3 .
W10	At right rear of luggage compartment. See Fig. 2 .
W11	At top center of engine. See Fig. 2 .
W11/1	At left rear bottom of engine.
W12	In front of shifter lever.
W13/1	Under left "C" pillar trim. See Fig. 2 .
W14	At left side of engine compartment.
W15	At right kick panel.
W15/1	At right kick panel.
W16	At right side of engine compartment. See Fig. 1 .
W16/2	At left side of engine compartment.
W17	Under right side of rear seat. See Fig. 2 .
W26	In front of shifter lever.
W28/1	On sill panel, below left front door. See Fig. 2 .
W28/2	On sill panel, below right front door. See Fig. 2 .
W29	At left "A" pillar. See Fig. 2 .
W29/1	At left "A" pillar. See Fig. 2 .
W29/2	At right kick panel.
W29/4	At right "C" pillar.
W30	At left rear bottom of engine.
W31	At left side of luggage compartment.
W36	At right kick panel. See Fig. 2 .

Mercedes-Benz S320 1995 - SPLICES

Mercedes-Benz S320 1995 SPLICES

Component	Component Location
Z3	In left interior harness, at sill panel, under left rear door.
Z3/1	In dash harness, at center of dash.
Z3/4	In left engine compartment harness, at fuse & relay box.
Z3/5	In dash harness, at center of dash.
Z3/7	In dash harness, at center of dash.
Z3/8	In dash harness, at center of dash.
Z3/11	In dash harness, at center of dash.
Z3/12	In left interior harness, at sill panel, under left front door.
Z3/13	In left interior harness, at sill panel, under left "B" pillar.
Z3/29	In right interior harness, at sill panel, below right rear door.
Z3/31	In body harness, behind center console.
Z4/3	In luggage compartment harness, on left side of luggage compartment.
Z6/8	In right engine harness, at right rear of engine compartment.
Z6/16	In dash harness, at center of dash.
Z6/18	In left engine compartment harness, at center of engine.
Z6/21	In left engine compartment harness, at front of fuse & relay box.
Z6/24	In left engine compartment harness, at center of engine.
Z6/25	In left engine compartment harness, at center of engine.
Z7/1	In right interior harness, at sill panel, below right rear door.
Z7/19	In left engine compartment harness, at fuse & relay box.
Z7/21	In dash harness, at center of dash.
Z7/26	In body harness, under left front seat.
Z7/35	In right engine harness, at right rear of engine compartment.
Z7/36	In right engine harness, at right rear of engine compartment.
Z7/38	In left engine compartment harness, at center front of engine.
Z7/39	In left engine compartment harness, at center front of engine.
Z8	In left engine compartment harness, at front of fuse & relay box.
Z20/2	In luggage compartment harness, on left side of luggage compartment.
Z20/3	In luggage compartment harness, on left side of luggage compartment.
Z20/4	In luggage compartment harness, on left side of luggage compartment.
Z20/5	In luggage compartment harness, on left side of luggage compartment.
Z20/10	In luggage compartment harness, on left side of luggage compartment.
Z20/16	In luggage compartment harness, on left side of luggage compartment.
Z21/2	In right interior harness, at sill panel, below right "B" pillar.
Z21/3	In right interior harness, at sill panel, below right rear door.
Z25/3	In luggage compartment harness, on left side of luggage compartment.
Z28/2	In luggage compartment harness, on left side of luggage compartment.
Z28/18	In luggage compartment harness, on left side of luggage compartment.
Z29	In left engine compartment harness, at fuse & relay box.
Z30/1	In left engine compartment harness, at fuse & relay box.
Z30/2	In left engine compartment harness, at fuse & relay box.
Z30/5	In left interior harness, at sill panel, under left rear door.
Z35/1	In left interior harness, at sill panel, under left rear door.
Z35/2	In left interior harness, at sill panel, under left rear door.
Z37/2	In right engine harness, at right rear of engine compartment.
Z37/3	In right engine harness, at right rear of engine compartment.
Z38	In right interior harness, at sill panel, below right rear door.
Z81	In body harness, under left front seat.
Z82/3	In right interior harness, at sill panel, below right rear door.
Z85/1	In right engine harness, at right rear of engine compartment.
Z88/1	In right interior harness, at sill panel, below right "B" pillar.
Z94	In right engine harness, at right rear of engine compartment.
Z99/1	In right engine harness, at right rear of engine compartment.