Mercedes-Benz ML320 1998 - 1998 MERCEDES-BENZ ML320

Mercedes-Benz ML320 1998 - BUZZERS, RELAYS & TIMERS

Mercedes-Benz ML320 1998 BUZZERS, RELAYS & TIMERS

Component	Component Location
Alarm Horn Relay	In left side of engine compartment, in fuse & relay box.
Blower Relay	In left side of engine compartment, in fuse & relay box.
Central Locking, All Doors Lock Relay	In left side of engine compartment, in fuse & relay box.
Central Locking, Left Front Door & Fuel Filler Flap Unlock Relay	In left side of engine compartment, in fuse & relay box.
Central Locking, Right Front Door & Rear Doors Unlock Relay	In left side of engine compartment, in fuse & relay box.
Central Locking, Tailgate Unlock Relay	In left side of engine compartment, in fuse & relay box.
Circuit 15 Relay	In left side of engine compartment, in fuse & relay box.
Circulation Pump Relay	In left side of engine compartment, in fuse & relay box.
Convenience Relay	In left side of engine compartment, in fuse & relay box.
Engine Cooling Fan Stage 1 Relay	In left side of engine compartment, in fuse & relay box.
Front Foglight Relay	In left side of engine compartment, in fuse & relay box.
Front Wiper Motor Relay	In left side of engine compartment, in fuse & relay box.
Fuel Pump Relay	In left side of engine compartment, in fuse & relay box.
High Pressure/Return Pump Relay	In left side of engine compartment, in fuse & relay box.
Left Front Power Window Relay	In left side of engine compartment, in fuse & relay box.
Left Turn Signal Relay	In left side of engine compartment, in fuse & relay box.
Rear Foglight Relay	In left side of engine compartment, in fuse & relay box.
Rear Window Defroster Relay	In left side of engine compartment, in fuse & relay box.
Right Front Power Window Relay	In left side of engine compartment, in fuse & relay box.
Right Turn Signal Relay	In left side of engine compartment, in fuse & relay box.
Seat Heater Relay (Stage 1)	On underside of left/right front seat.
Seat Heater Relay (Stage 2)	On underside of left/right front seat.
Secondary Air Injection Pump Relay	In left side of engine compartment, in fuse & relay box.
Starter Motor Relay	In left side of engine compartment, in fuse & relay box.
Two-Tone Horn Relay	In left side of engine compartment, in fuse & relay box.

Mercedes-Benz ML320 1998 - CIRCUIT PROTECTION DEVICES

Mercedes-Benz ML320 1998 CIRCUIT PROTECTION DEVICES

Component	Component Location
"E" Box	In left side of engine compartment.
Fuse & Relay Box	In left side of engine compartment, in "E" box. See Fig. 1 .

Mercedes-Benz ML320 1998 - CONTROL UNITS

Mercedes-Benz ML320 1998 CONTROL UNITS

Component	Component Location
Acoustimass Bass Module	Under driver's seat. See Fig. 1 .
All Activity Module (AAM)	In left side of engine compartment, in "E" box. See Fig. 1 .
Engine Control Module (ME-SFI)	In left side of engine compartment, in "E" box. See Fig. 1 .
MB-Immobilizer Control Module	In top right side of steering column. See Fig. 1 .
SRS Control Module	Below front of center console. See Fig. 1 .
Traction Systems Control Module	In left side of engine compartment in "E" box. See Fig. 1 .
Transfer Case Control Module	Below center console, behind shift assembly. See Fig. 1 .
Transmission Control Module	Behind center of dash. See Fig. 1 .
Trip Computer Module	In front of roof.

Mercedes-Benz ML320 1998 - MOTORS

Mercedes-Benz ML320 1998 MOTORS

Component	Component Location
Air Pump	On center front of engine.
Blend Air Flap Actuator Motor	Behind right side of dash.
Blower Motor	Under right side of dash.
Coolant Circulation Pump	In right side of engine compartment.
Filler Flap CL Actuating Motor	In left rear cargo area, behind trim.
Fuel Pump	In top of fuel tank.
Module Box Blower Motor	In left side of engine compartment, in "E" box.
Rear Window Washer Pump	In left side of engine compartment, on side of washer fluid reservoir.
Transfer Case Selection Motor	On left rear of transfer case.
Windshield Washer Pump	In left side of engine compartment, on side of washer fluid reservoir.

Mercedes-Benz ML320 1998 - SENDING UNITS & SENSORS

Mercedes-Benz ML320 1998 SENDING UNITS & SENSORS

Component	Component Location
Camshaft Hall Effect Sensor	On right front of engine.
Crankshaft Position (CKP) Sensor	On left rear of engine.
ECT Sensor	On center front of engine.
Fuel Tank Emissions Monitoring Pressure Sensor	In left rear side of cargo area, behind trim on fuel filler pipe.
Hot Film MAF Sensor	In right side of engine compartment.
Icing Protection Temperature Sensor	Behind right side of dash, in evaporator.
Knock Sensor No. 1 (KS 1)	On right side of engine, below intake manifold.
Knock Sensor No. 2 (KS 2)	On left side of engine, below intake manifold.
Left Front Axle VSS Sensor	Behind left front wheel.
Left Front Brake Pad Wear Sensor	Behind left front wheel.
Left Rear Axle VSS Sensor	Behind left rear wheel.
Oil Sensor	On lower right front of engine.
Outside Temperature Indicator Sensor	Behind left side of front grille.
Oxygen Sensor (O2S 1) (Left) (Before TWC)	Under left side of vehicle, in left exhaust downpipe.
Oxygen Sensor (O2S 1) (Left) (After TWC)	Under left side of vehicle in left exhaust pipe.
Oxygen Sensor (O2S 1) (Right) (Before TWC)	Under right side of vehicle, in right exhaust downpipe.
Oxygen Sensor (O2S 1) (Right) (After TWC)	Under right side of vehicle in right exhaust pipe.
Pedal Value Sensor	In left rear corner of engine compartment.
Pressure Sensor	On right front of engine.
Refrigerant Pressure Sensor	In left front of engine compartment.
Right Front Axle VSS Sensor	Behind right front wheel.
Right Rear Axle VSS Sensor	Behind right rear wheel.

Mercedes-Benz ML320 1998 - SOLENOIDS & SOLENOID VALVES

Mercedes-Benz ML320 1998 SOLENOIDS & SOLENOID VALVES

Component	Component Location
ABS Hydraulic Unit	Left side of engine compartment, below washer bottle.
Activated Charcoal Canister Shutoff Valve	Under rear of vehicle, above spare wheel.
Air Pump Switchover Valve	On right front of engine.
EGR Switchover Valve	On top rear of engine.
Purge Control Valve	In left rear corner of engine compartment.
R/P Lock Solenoid	Below center console, in right side of shift assembly.
Resonance Intake Manifold Switchover Valve	On top center front of engine.
Throttle Valve Actuator	On center rear of engine.

Mercedes-Benz ML320 1998 - SWITCHES

Mercedes-Benz ML320 1998 SWITCHES

Component	Component Location
Back-Up Light Switch	Under center console, at base of shift assembly.
Brake Fluid Level Switch	In brake fluid reservoir.
Driver's Seat Belt Switch	In driver's seat belt buckle.
ECL Switch	In left rear of engine compartment.
Engine Hood Switch (ATA)	In left rear corner of engine compartment.
Kickdown Switch	Below accelerator pedal.
Parking Brake Switch	On parking brake support bracket.
Passenger's Seat Belt Switch	In passenger's seat belt buckle.
Rotary Tumbler Trunk Lid Microswitch	Part of tailgate latch assembly.
Stoplight Switch	On brake pedal support.
Transmission Range Recognition Switch	Under center console, at base of shift assembly.

Mercedes-Benz ML320 1998 - MISCELLANEOUS

Mercedes-Benz ML320 1998 MISCELLANEOUS

Component	Component Location
Alarm Horn	In left rear corner of engine compartment.
Antenna Splitter	On right side of liftgate.
Audio Amplifier	Behind left side of dash.
Blower Motor Preresistor Group	Under right side of dash, in blower assembly.
Diagnostic Module (OBD II) Scan Tool Connector	Below left side of dash.
Driver's ETR Squib	On base of left "B" pillar, behind trim.
FM/AM Amplifier	In liftgate, behind trim.
Front Passenger ETR Squib	On base of right "B" pillar, behind trim.
Low Beam Headlight Relay Shorting Clip	In left side of engine compartment, in fuse & relay box.
Transponder Coil	Top right side of steering column, on ignition switch.

Mercedes-Benz ML320 1998 - CONNECTORS

Mercedes-Benz ML320 1998 CONNECTORS

Component	Component Location
X11/22 (Black, 16-Pin)	Below driver's side of dash.
X18 (Red, 28-Pin)	Behind left side of dash.
X18/1 (Black, 9-Pin)	In tailgate, behind trim.
X18/2 (Black, 6-Pin)	Left side of engine compartment, in "E" box.
X18/3 (Black, 10-Pin)	Right rear of vehicle, behind rear tire.
X18/5 (Black, 3-Pin)	Left rear cargo area (trim removed).
X18/6 (Black, 3-Pin)	Left rear cargo area, behind trim.
X22 (Early Production) (Black, 6-Pin)	Left side of engine compartment, in "E" box.
X22 (Late Production) (Black, 16-Pin)	Left side of engine compartment, in "E" box.
X22/2 (Black, 13-Pin)	Right front of transmission, on bell housing.
X28/13 (Black, 2-Pin)	Underside of left/right front seat.
X35/1 (Black, 20-Pin)	Front of left front door.
X35/2 (Black, 20-Pin)	Front of right front door.
X35/3 (Black, 20-Pin)	Front of left rear door.
X35/4 (Black, 20-Pin)	Front of right rear door.
X36/4 (Black, 1-Pin)	Left rear cargo area, behind trim.
X52 (Black, 16-Pin)	Left rear cargo area, behind trim.
X54/1 (Red, 2-Pin)	Underside of left/right front seat.
X54/9 (White, 2-Pin)	Under left/right front seat.
X54/10 (Green, 2-Pin)	Underside of left/right front seat.
X54/20 (Black, 2-Pin)	Rear of left/right front seat back, behind trim.
X55/3 (Black, 16-Pin)	Underside of driver's seat.
X55/4 (Black, 16-Pin)	Underside of passenger's seat.
X58	On rear bumper.
X58/1	At lower right side of dash.
X58/4	Right rear cargo area.
X58s1	Rear of vehicle, in trailer connector.

Mercedes-Benz ML320 1998 - GROUNDS

Mercedes-Benz ML320 1998 GROUNDS

Component	Component Location
W2	Lower right front of engine compartment, behind headlamp. See Fig. 1 .
W6	Left rear cargo area, behind trim. See Fig. 1 .
W7	At right rear of cargo area. See Fig. 1 .
W8	On tailgate, behind trim. See Fig. 1 .
W9	Behind right headlamp. See Fig. 1 .
W11/3	Top center front of engine.
W16	Left rear corner of engine compartment. See Fig. 1 .
W16/4	Right rear of engine compartment. See Fig. 1 .
W18	Under driver's seat, below carpet. See Fig. 1 .
W19	Under right front seat, below carpet. See Fig. 1 .
W26	Under center console, on SRS mounting bolt. See Fig. 1 .
W29/2	Below passenger's side of dash, behind kick panel. See Fig. 1 .

Mercedes-Benz ML320 1998 - SPLICES

Mercedes-Benz ML320 1998 SPLICES

Component	Component Location
Z3/29	In motor harness, left side of engine, under plastic harness channel.
Z7/35	In motor harness, left side of engine, under plastic harness channel.
Z7/36	In motor harness, left side of engine, under plastic harness channel.
Z50/1	In dash harness, behind instrument cluster, near breakout for instrument cluster connector.
Z50/2	In dash harness, center, near breakout for A/C control module.
Z50/3	In dash harness, in breakout harness for passenger harness to dash harness interconnect.
Z50/4	In dash harness, right side, near breakout for icing sensor.
Z50/5	In dash harness, behind instrument cluster, between breakouts for parking brake switch & stoplamp switch.
Z50/6	In dash harness, behind instrument cluster.
Z50/10	In dash harness, behind instrument cluster.
Z50/11	In dash harness, behind instrument cluster.
Z50/12	In dash harness, behind instrument cluster.
Z50/13	In dash harness, in breakout harness for passenger harness to dash harness interconnect.
Z50/14	In dash harness, near breakout for parking brake switch.
Z51/1	In passenger harness, under center of dash, between breakouts for kickdown switch & transmission control module.
Z51/2	In passenger harness, under center of dash, between breakouts for kickdown switch & transmission control module.
Z51/3	In passenger harness, left side of engine compartment, in "E" box.
Z51/4	In passenger harness, left side of engine compartment, in "E" box.
Z51/5	In passenger harness, under front of center console, near breakout for radio & SRS control module.
Z51/6	In passenger harness, under center console, in harness breakout for transmission range recognition switch.
Z51/7	In passenger harness, under center console, in harness breakout for center console switch assembly.
Z51/8	In passenger harness, under passenger's side of dash.
Z51/9	In passenger harness, under left front seat, near breakout for W18.
Z52/1	In passenger harness, under right front seat, near breakout for W19.
Z52/2	In passenger harness, left rear of vehicle, near breakout for trailer connector X52.
Z52/3	In passenger harness, left rear, between breakout for right taillight assembly & W7.
Z52/4	In passenger harness, under center console, in main harness breakout for right side of vehicle.
Z52/5	In passenger harness, left rear of vehicle, near breakout for tailgate harness.
Z52/6	In passenger harness, left rear of vehicle, near breakout for tailgate harness.
Z52/7	In passenger harness, left side of engine compartment, in "E" box.
Z52/9	In passenger harness, under center console, in main harness breakout for right side of vehicle.
Z52/10	In passenger harness, in harness breakout for dash connector X18.
Z52/11	In passenger harness, in harness breakout for dash connector X18.
Z53/1	In passenger harness, under center console, in main breakout for left side of vehicle.
Z53/2	In passenger harness, under center console, in main breakout for left side of vehicle.
Z53/3	In passenger harness, under center console, in main breakout for left side of vehicle.
Z53/4	In passenger harness, left rear of cargo area, near breakout for trailer connector.
Z53/5	In passenger harness, under center console, in main harness breakout for right side of vehicle.
Z53/6	In passenger harness, left rear of cargo area, near breakout for trailer connector X52.
Z53/7	In passenger harness, in harness breakout for dash connector X18.
Z53/8	In passenger harness, under center console, in main breakout for right side of vehicle.
Z53/9	In passenger harness, under center console in plastic harness channel.
Z54/1	Headliner harness, near breakout for left rear dome lamp.
Z54/2	Headliner harness, near breakout for sliding/pop-up roof assembly.
Z54/3	Headliner harness, near breakout for sliding/pop-up roof assembly.
Z54/5	Headliner harness, in breakout harness to left rear dome lamp.
Z55/1	Tailgate harness, in breakout for W8 & trunk lid microswitch.
Z55/2	Tailgate harness, near breakout for tailgate CL actuating motor, rear wiper motor & license plate lamps.
Z56/1	Lower left front of engine compartment, behind headlamp.
Z57/1	Lower right front of engine compartment, behind headlamp.

Mercedes-Benz ML320 1998 - COMPONENT LOCATION GRAPHICS

NOTE:

Fig.res may show multiple component locations. - appropriate table for proper figure references.

Fig. 1: Mercedes-Benz ML320 1998 - Component Locations - Vehicle Overview