Mercedes-Benz E320 4Matic 2001 - 2001 MERCEDES-BENZ E320, E430 & E55

Mercedes-Benz E320 4Matic 2001 - BUZZERS, RELAYS & TIMERS

Mercedes-Benz E320 4Matic 2001 BUZZERS, RELAYS & TIMERS LOCATION

Component	Component Location
Headlight Washer Pump Relay	Left rear of engine compartment, in left relay & module box.
Horn Relay	Left rear of engine compartment, in left relay & module box.
Polarity Protection Relay	Right rear of engine compartment, in right fuse & relay box.
Windshield Washer Relay	Left rear of engine compartment, in left relay & module box.
Wiper Stage 1 Relay	Left rear of engine compartment, in left relay & module box.
Wiper Stage 2 Relay	Left rear of engine compartment, in left relay & module box.

Mercedes-Benz E320 4Matic 2001 - CIRCUIT PROTECTION DEVICES

Mercedes-Benz E320 4Matic 2001 CIRCUIT PROTECTION DEVICES LOCATION

Component	Component Location
Front Fuse & Relay Box	Left rear of engine compartment. See Fig. 2 .
Illumination Control Module Fuses	Left end of dash, in door opening.
Left Relay & Module Box	Left rear of engine compartment.
Rear Fuse & Relay Box	Under right rear seat. See Fig. 2 .
Right Fuse & Relay Box	Right rear of engine compartment.

Mercedes-Benz E320 4Matic 2001 - CONTROL UNITS

Mercedes-Benz E320 4Matic 2001 CONTROL UNITS LOCATION

Component	Component Location
AIR Control Module	On left front of engine compartment. See Fig. 2 .
ASR/ETS/ESP Hydraulic Control Module	On left front of engine compartment. See Fig. 2 .
Combination Control Module	In module box, on right rear of engine compartment. See Fig. 2 .
DAS Control Module	Behind left side of dash. See Fig. 2 .
Diagnostic Module (OBD II)	On left rear corner of engine compartment. See Fig. 2 .
EA/CC/ISC Control Module	On front passenger's foot plate.
Engine Control Module (ME-SFI)	In module box, on right rear of engine compartment. See Fig. 2 .
ESP/SPS Control Module	In module box, on right rear of engine compartment. See Fig. 2 .
ETS/SPS Control Module	In module box, on right rear of engine compartment. See Fig. 2 .
Garage Door Opener Control Module	In left sun visor.
Headlight Range Adjustment Control Module	Under left side of rear seat. See Fig. 2 .
Illumination Control Module	Behind left side of dash, part of headlight switch.
Left Front ESA Control Module	Below left front seat. See Fig. 2 .
PSE Control Module	Below right rear seat. See Fig. 2 .
RCL Control Module	On front passenger's foot plate. See Fig. 2 .
Relay Module	In module box, on right rear of engine compartment. See Fig. 2 .
Right Front ESA Control Module	Below right front seat. See Fig. 2 .
SRS Control Module	In front of transmission shift lever. See Fig. 2 .
Transmission Control Module	In module box, on right rear of engine compartment. See Fig. 2 .

Mercedes-Benz E320 4Matic 2001 - MOTORS

Mercedes-Benz E320 4Matic 2001 MOTORS LOCATION

Component	Component Location
Activated Charcoal Filter Actuator	Behind right side of dash.
Auxiliary Fan	On left front of vehicle, in front of radiator.
Blower Motor	Below right side of dash.
CC/ISC Actuator	Below center of intake manifold.
Coolant Circulation Pump	On frame rail, right front of engine compartment.
EA/CC/ISC Actuator	Below center of intake manifold.
ESC Motor	Forward of steering wheel, under dash.
Fuel Pump	Under left rear of vehicle.
Headlight Washer Pump	On left front of engine compartment.
L/R Audio Power Amplifier	At left front of luggage compartment.
Module Box Blower Motor	On right rear of engine compartment, below control module box.
Rear Window Sun Shade Motor	In trunk, below rear package shelf.
Windshield Washer Pump	In washer fluid reservoir, behind left headlight.
Wiper Motor	On left side of firewall.

Mercedes-Benz E320 4Matic 2001 - SENDING UNITS & SENSORS

Mercedes-Benz E320 4Matic 2001 SENDING UNITS & SENSORS LOCATION

Component	Component Location
Camshaft Hall Effect Sensor	At front left of engine, on cylinder head.
CKP Sensor	On left rear of engine.
ECT Sensor	On top front of engine.
Emissions Sensor	On right rear of engine compartment, behind control module box.
Evaporator Temperature Sensor	Behind left center of dash.
Fuel Level Sensor	In fuel tank.
Fuel Tank Pressure Sensor	On fuel tank, in right front of trunk.
Front Axle Level Sensor	Beneath right front of vehicle, on frame rail.
Heater Core Temperature Sensor	Behind center of dash, in A/C-heater plenum.
Hot Film (MAF) Sensor	On air intake assembly.
IAT Sensor	On top center of engine.
In-Car Temperature Sensor	In overhead console.
Left Front Axle VSS Sensor	Behind left front wheel hub assembly.
Left Front Brake Pad Wear Sensor	On left front brake caliper.
Left Rear Axle VSS Sensor	Behind left rear wheel hub assembly.
Left Rear Brake Pad Wear Sensor	On left front brake caliper.
Left Side Air Bag Sensor	Beneath left front seat, on crossmember.
O2S 1 (Left)	Under vehicle on exhaust pipe, below left side of engine.
O2S 1 (Right)	Under vehicle on exhaust pipe, below right side of engine.
O2S 2 (Left) (After TWC)	Under vehicle on exhaust pipe, behind catalytic converter.
O2S 2 (Right) (After TWC)	Under vehicle on exhaust pipe, behind catalytic converter.
Outside Temperature Indicator Sensor	On left front of vehicle, below front bumper.
Pedal Value Sensor	On left rear corner of engine compartment.
Rear Axle Level Sensor	Beneath right rear of vehicle.
Refrigerant Pressure Sensor	On left front of engine compartment, behind left headlight.
Refrigerant Temperature Sensor	On left front of engine compartment, behind left headlight, on receiver drier.
Right Front Axle VSS Sensor	Behind right front wheel hub assembly.
Right Front Brake Pad Wear Sensor	On right front brake caliper.
Right Rear Axle VSS Sensor	Behind right rear wheel hub assembly.
Right Rear Brake Pad Wear Sensor	On right rear brake caliper.
Right Side Air Bag Sensor	Beneath right front seat, on crossmember.
Sun Sensor	On top center of dash.

Mercedes-Benz E320 4Matic 2001 - SOLENOIDS & SOLENOID VALVES

Mercedes-Benz E320 4Matic 2001 SOLENOIDS & SOLENOID VALVES LOCATION

Component	Component Location
Activated Charcoal Canister Shut-Off Valve	Under vehicle near right rear wheelwell.
Adjustable Camshaft Timing Solenoid (2)	On front of respective cylinder head.
Air Pump Switchover Valve	On front of engine.
Duovalve	On right rear of engine compartment, in front of control module box.
EGR Switchover Valve	On right front of engine.
EGR Vacuum Valve Transducer	On right front of engine compartment, below air cleaner.
ETC Valve Unit	On right front of transmission.
Intake Manifold Switchover Valve	Attached to bottom of intake manifold.
Kickdown Valve (A/T)	On right rear of transmission.
Left Front Seat Belt Comfort Feature Solenoid	On seat belt unit, at left "B" pillar.
Purge Control Valve	On left side, front of engine compartment.
Purge Flow Switchover Valve	On left front inner fender panel.
Right Front Seat Belt Comfort Feature Solenoid	On seat belt unit, at right "B" pillar.
R/P Lock Solenoid	Near gear shift selector assembly.
RTR Control Valve	Part of trunk lid lock.
SPS P Valve	On steering rack.
Switchover Valve Block	Behind right side of dash.
Upshift Delay Switchover Valve	On left side, front of engine compartment.

Mercedes-Benz E320 4Matic 2001 - SWITCHES

Mercedes-Benz E320 4Matic 2001 SWITCHES LOCATION

Component	Component Location
Brake Fluid Level Switch	On brake fluid reservoir.
ECL Switch	Right front of engine compartment, below the engine coolant reservoir.
Engine Hood Switch	On front of engine compartment, below left hood latch.
Front Passenger Seat Occupied Switch	Below right front seat cushion.
Heated Washer System Thermoswitch	On left rear edge of engine hood.
Kickdown Switch	On floor, under accelerator pedal.
Left Front Seat Belt Buckle Switch	In driver's seat belt buckle.
Left Front Seat Belt/Comfort Switch	In driver's seat belt buckle.
Oil Level Switch	On left side of engine, on oil pan.
Parking Brake Switch	On parking brake assembly.
Right Front Seat Belt Buckle Switch	In right front seat belt buckle.
Right Front Seat Belt/Comfort Switch	In right front seat belt buckle.
Starter Lock-Out/Back-Up Light Switch	On left side of transmission.
Stoplight Switch	On brake pedal support bracket.
Transmission Overload Protection Switch	On left side of transmission housing.
Transmission Range Recognition Switch	On gear shift selector assembly.
Windshield Washer Fluid Level Switch	On top of washer fluid reservoir.

Mercedes-Benz E320 4Matic 2001 - MISCELLANEOUS

Mercedes-Benz E320 4Matic 2001 MISCELLANEOUS LOCATION

Component	Component Location
Alarm Horn	Behind right headlight unit.
Battery	Beneath right rear seat.
Blower Regulator	Below right side of dash.
Capacitor (Noise Suppression)	Below accelerator pedal.
CD Changer	On left side of luggage compartment.
CTEL Transmitter-Receiver	On left side of trunk. See Fig. 2 .
Data Link Connector (DLC) (DTC Readout)	On left rear of engine compartment.
Diagnostic Module Test Connector	Below left side of dash.
Electrolytic Capacitor	In passenger's front footwell.
FM/AM Amplifier	On left rear "C" pillar.
IR Receiver (Left Front Door)	In left front door handle.
IR Receiver (Right Front Door)	In right front door handle.
IR Receiver (Trunk Lid)	In center rear of trunk lid.
Left Front ETR Squib	At base of left "B" pillar.
Left/Right Audio Power Amplifier	At left wheelwell, in trunk.
Left Side Air Bag Squib	In left front door.
RCL Receiver (Interior Rear View Mirror)	Below interior rear view mirror.
Right Front ETR Squib	At base of right "B" pillar.
Right Side Air Bag Squib	In right front door.
Transponder Coil	Surrounding ignition lock cylinder.

Mercedes-Benz E320 4Matic 2001 - CONNECTORS

Mercedes-Benz E320 4Matic 2001 CONNECTORS LOCATION

Component	Component Location
X18 (5 Pin)	At center of left kick panel, below left front door.
X22 (13 Pin)	In control module box.
X22/1 (6 Pin)	At left front of engine compartment.
X22/2 (3 Pin)	In control module box, under wires.
X22/3 (12 Pin)	In control module box, under wires.
X25 (4 Pin)	At center of left kick panel, below left front door.
X25/1 (6 Pin)	At center of left kick panel, below left front door.
X25/2 (Brown, 8 Pin)	At center of right kick panel, below right front door.
X25/3 (Black, 8 Pin)	At center of right kick panel, below right front door.
X26(A) (8 Pin)	Under left side of dash, under fuse & relay box.
X26(B) (2 Pin)	Under left side of dash, under fuse & relay box.
X28/12 (2 Pin)	At center of right kick panel, below right front door.
X35/1(1) (4 Pin)	At center of left kick panel, below left front door.
X35/1(2) (28 Pin)	At center of left kick panel, below left front door.
X35/1(3) (2 Pin)	At center of left kick panel, below left front door.
X35/2(1) (4 Pin)	At center of right kick panel, below right front door.
X35/2(2) (28 Pin)	At center of right kick panel, below right front door.
X35/2(3) (2 Pin)	At center of right kick panel, below right front door.
X35/3(1) (4 Pin)	At base of left "B" pillar.
X35/3(2) (5 Pin)	At base of left "B" pillar.
X35/4(1) (4 Pin)	At base of right "B" pillar.
X35/4(2) (5 Pin)	At base of right "B" pillar.
X39/5 (10 Pin)	Under rear of center console.
X54/7 (8 Pin)	At right front of left front footwell.
X55/3 (4 Pin)	Under left front seat.
X55/4 (2 Pin)	Under right front seat.
X62/2 (2 Pin)	Under right rear seat.
X85 (8 Pin)	Under left side of dash, under fuse & relay box.
X88/5 (2 Pin)	At left front of engine compartment.
X88/12	At right front of engine compartment.

Mercedes-Benz E320 4Matic 2001 - GROUNDS

Mercedes-Benz E320 4Matic 2001 GROUNDS LOCATION

Component	Component Location
W1	Behind instrument cluster. See Fig. 1 .
W6/1	At left rear of luggage compartment, near taillight assembly. See Fig. 1 .
W10	Under front of right rear seat. See Fig. 1 .
W11	At top left front of engine. See Fig. 1 .
W11/2	At top of right cylinder head, between cylinder No. 2 & 3. See Fig. 1 .
W11/3	At top of left cylinder head, between cylinders No. 6 & 7. See Fig. 1 .
W15/1	At front of passenger footwell. See Fig. 1 .
W16/3	On left front inner fender. See Fig. 1 .
W16/4	At right front of engine compartment, on frame rail. See Fig. 1 .
W16/6	At right rear of engine compartment, forward of control module box. See Fig. 1 .
W18	Under left front seat, on crossmember. See Fig. 1 .
W19	Under right front seat, on crossmember. See Fig. 1 .
W26	Under center console, on SRS control module mounting bolt. See Fig. 1 .
W30	Behind instrument cluster. See Fig. 1 .

Mercedes-Benz E320 4Matic 2001 - SPLICES

Mercedes-Benz E320 4Matic 2001 SPLICES LOCATION

Component	Component Location
Z3	In left interior harness, at front of left rear panel.
Z3/1	In dash harness, under top center of dash.
Z3/26	In left interior harness, at front of left rear panel.
Z3/29	In left engine harness, under front fuse & relay box.
Z3/31	In left interior harness, at base of left "A" pillar.
Z6/6	In left luggage compartment harness, behind left rear wheelwell.
Z6/16	In dash harness, behind instrument cluster.
Z6/23	In left luggage compartment harness, behind left rear wheelwell.
Z7	In right interior harness, at front of right rear panel.
Z7/1	In dash harness, right of instrument cluster.
Z7/19	In left engine harness, under front fuse & relay box.
Z7/24	In right engine harness, at right rear of engine compartment.
Z7/25	In right engine harness, at right rear of engine compartment.
Z7/26	In right interior harness, at base of right "A" pillar.
Z7/31	In left interior harness, at base of left "A" pillar.
Z7/32	In dash harness, under center top of dash.
Z7/33	In right interior harness, at base of right "A" pillar.
Z7/37	In left luggage compartment harness, behind left rear wheelwell.
Z21/5	In left interior harness, at front of left rear panel.
Z21/6	In left interior harness, at front of left rear panel.
Z21/11	In right interior harness, at front of right rear panel.
Z28/18	In left interior harness, at front of left rear panel.
Z28/25	In dash harness, behind instrument cluster.
Z28/26	In dash harness, behind instrument cluster.
Z28/29	In left luggage compartment harness, behind left rear wheelwell.
Z28/30	In left luggage compartment harness, behind left rear wheelwell.
Z29/1	In left interior harness, at front of left rear panel.
Z29/2	In left interior harness, at front of left rear panel.
Z30	In dash harness, under center top of dash.
Z30/1	In dash harness, behind instrument cluster.
Z30/2	In dash harness, behind instrument cluster.
Z30/3	In left interior harness, at front of left rear panel.
Z30/4	In left interior harness, at front of left rear panel.
Z37	In right interior harness, at front of right rear panel.
Z37/1	In right interior harness, at front of right rear panel.
Z37/2	In right interior harness, at base of right "A" pillar.
X38	In left interior harness, at front of left rear kick panel.
Z40	In left interior harness, at base of left "A" pillar.
Z41	In right interior harness, at front of right rear panel.
Z42	In left interior harness, at front of left rear panel.
Z44	In right interior harness, at base of right "A" pillar.
Z44/1	In right interior harness, at base of right "A" pillar.
Z45	In right interior harness, at front of right rear panel.
Z81	In dash harness, right of instrument cluster.
Z81/4	In left interior harness, under left rear of center console.
Z84/3	In right interior harness, at base of right "A" pillar.
Z84/4	In right interior harness, at base of right "A" pillar.
Z92	In left engine harness, under front fuse & relay box.
Z99/3	In right interior harness, at front of right rear panel.