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.
Back-Up Lamp
Manual transmissions
The reversing lights (10/48 and 10/55) are activated when reverse gear is engaged. The reverse gear switch (3/10) on the transmission then closes. A directly connected signal informs the central electronic module (CEM) (4/56) that reverse gear is engaged. The central electronic module (CEM) powers the lights directly via an output.
Automatic transmission
The reversing lights (10/48 and 10/55) are activated when reverse gear is engaged. The transmission control module (TCM) (4/28) informs the central electronic module (CEM) (4/56) that reverse gear is engaged via the CAN network. The central electronic module (CEM) powers the lights directly via an output.
Use the Manual With the Right Hardware
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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.
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