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.
Control Units
/Right) Below respective headlight, on frame rail. Lamp Control Module (2) On 13-fold relay panel. See Figure. Mirror Fold-Away Function Control Module On 13-fold relay panel. See Figure. Motronic Engine Control Module In center of plenum, between firewall & windshield base. See Figure. Navigation Unit (W/CD Drive) Behind right seat, behind storage cover. Operating Electronics & Telephone Control Module (Coupe) Below left rear seat. Operating Electronics & Telephone Control Module (Roadster) Behind subwoofer, on rear compartment wall. Power Window Control Module (Left/Right) In respective door, integral with power window motor unit. Radar Interior Monitoring Control Module 1 (Roadster) Behind passenger seat wind deflector. Throttle Valve Control Module (1.8L AMU) On throttle body, on left rear of engine. Throttle Valve Control Module (1.8L ATC/AWP) On throttle body, on left front of engine. See Figure.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.