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.
Electrical/electronic components and installed locations: Notes
1 - Transmission Control Module (TCM) J217
- Installed location → Transmission Control Module (TCM) J217
- Control module is checked with On Board Diagnostics (OBD)
- Removing and installing → Transmission Control Module (TCM) J217 , removing and installing
2 - Hydraulic control module
- Installed location Hydraulic control module
- Valves are checked with On Board Diagnostics (OBD)
- Removing and installing → Hydraulic control module, removing and installing
3 - Shift mechanism cover
- → Shift mechanism cover (through VIN 8E_6A156499), removing and installing
- → Shift mechanism cover (from VIN 8E_6A156500), removing and installing
4 - Tiptronic Switch F189
- Location: Integrated into circuit board in cover of shift mechanism
- Consists of 3 Hall sensors that are controlled by a magnet on the cover strip transverse slide.
- If malfunctions at Tiptronic Switch F189 occur, check first whether magnet at control slide masking panel is properly secured and replace masking panel if necessary. Before replacing the printed circuit, check wiring.
- → Tiptronic Switch F189 (through VIN 8E_6A156499), removing and installing
5 - Shift lock solenoid N110
- Installed location → Shift lock solenoid N110
- → Shift Lock Solenoid N110 (through VIN 8E_6A156499), removing and installing
- → Shift Lock Solenoid N110 (from VIN 8E_6A156500), removing and installing
6 - Data Link Connector (DLC)
- Installed location Data Link Connector (DLC)
7 - Cruise Control Switch E45
- Installed location → Cruise Control Switch E45
- Removing and installing →
- 94 LIGHTS, SWITCHES - EXTERIOR
- 94 LIGHTS, SWITCHES - EXTERIOR for ELECTRICAL EQUIPMENT, CABRIOLET
8 - Park/Neutral Position (PNP) Relay J226 (up to 10.04) or Starting Interlock Relay J207 (as of 11.04)
- Installed location → Power supply relay terminal 87/Starter Interlock Alarm System Relay J60 and Park/Neutral Position (PNP) Relay J226 (up to 10.04) or Starting Interlock Relay J207 (as of 11.04)
9 - Power supply relay terminal 87/ Starter Interlock Alarm System Relay J60
- Installed location → Power supply relay terminal 87/Starter Interlock Alarm System Relay J60 and Park/Neutral Position (PNP) Relay J226 (up to 10.04) or Starting Interlock Relay J207 (as of 11.04)
10 - Transmission Range (TR) Display Y6
- Installed location → Transmission Range (TR) Display Y6
- A fully illuminated gear selection indicator indicates a simple malfunction
- A blinking gear selection indicator indicates a critical malfunction
- No indication on display points to a fault in wiring or a faulty Transmission Range (TR) Display Y6
11 - Kick Down Switch F8
- Not a separate component, it adopts functions of Throttle Position (TP) Sensor G79 and Accelerator Pedal Position Sensor 2 G185 in vehicles with gasoline engine, both are integrated in accelerator pedal module; component location → Kick Down Switch F8
- Installed as one unit with Throttle Position (TP) Sensor G79 in vehicles with Diesel engine, this is integrated in the accelerator pedal module; component location → Kick Down Switch F8
- Signal received in Engine Control Module (ECM), signal transferred from ECM to Transmission Control Module (TCM) via CAN-Bus
- Removing and installing accelerator pedal module → 20 - FUEL SUPPLY SYSTEM
12 - Brake Light Switch F
- Installed location → Brake Light Switch F
- Signal received in Engine Control Module (ECM), signal transferred from ECM to Transmission Control Module (TCM) via CAN-Bus
- Removing and installing → 46 - BRAKES - MECHANICAL COMPONENTS
NO RELATED
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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.