Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2002 Mercedes Benz ML320FACTORY OEM SERVICE PROCEDURE
Electrical Component Locator: Miscellaneous
MISCELLANEOUS LOCATION
| Component | Component Location |
|---|---|
| Actual Valve Potentiometer (Wiper 1) | Part of throttle valve setting element. |
| Actual Valve Potentiometer (Wiper 2) | Part of throttle valve setting element. |
| Alarm Horn | In left rear corner of engine compartment. |
| Alarm Siren W/ Auxiliary Battery | In left rear corner of engine compartment. |
| Antenna Coil (Left) | At left side of rear window, behind trim. |
| Antenna Coil (Right) | At right side of rear window, behind trim. |
| Antenna Splitter | On right side of liftgate. |
| Audio Amplifier | Behind left side of dash. |
| Blower Motor Pre-Resistor Group | Under right side of dash, in blower assembly. |
| Data Link Connector (DLC) | Below left side of dash. |
| Diagnostic Module (OBD II) Scan Tool Connector | Below left side of dash. |
| Drive Actual Valve | Part of throttle valve setting element. |
| Driver's ETR Squib | On base of left "B" pillar, behind trim. |
| Emergency Call Speaker | Under right front seat. |
| E-Net Compensator | Under front passenger's seat. |
| Fanfare Horn | Front of grille. |
| FM/AM Amplifier | In liftgate, behind trim. |
| Front Passenger ETR Squib | On base of right "B" pillar, behind trim. |
| Garage Door Transmitter | On front center of roof. |
| Hands-Free Microphone | On front center of roof. |
| Low Beam Headlight Relay Shorting Clip | In left side of engine compartment, in fuse & relay box. |
| Radio Interference Suppression Capacitor | Top of engine. |
| Recirculated Air Flap Element | Behind right side of dash. |
| Relay Jumper | Right front footwell fuse & relay module. |
| Throttle Valve Actual Valve Potentiometer | Part of throttle valve setting element. |
| Transponder Coil | Top right side of steering column, on ignition switch. |
| Two Tone Horn | Lower right front of vehicle. |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.