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.
Courtesy Lighting/Sun Visor/Glove Compartment Lighting
The interior roof lighting front (10/22) and rear (10/150) a total of four lamps is activated by the relevant switch.
The inner roof lighting and courtesy lighting (10/97-102) is automatically activated when a door is opened, when unlocking using the remote control or when activating the approach lighting.
In order for the automatic activation to function the light switch in the roof console must be in the auto position. This only applies to roof lighting. The courtesy lighting is activated regardless of the position of the light switch.
The interior roof lighting and the courtesy lighting is powered by the central electronic module (CEM) via the relay for courtesy lighting (2/89). The interior roof lighting and the courtesy lighting can be dimmed when the central electronic module (CEM) activates/ deactivates general lighting. This is because the return cable from the interior roof lighting to the Central Electronic Module (CEM) can be controlled.
Courtesy lighting activated:
- when the request for courtesy and roof lighting is transmitted from the remote receiver to the central electronic module (CEM) using serial communication
- when the remote control receiver has received a command to unlock from one of the remote controls
- when one of the doors is opened.
The lighting in the sun visors (10/114-115) and the lighting in the glove compartment (10/29) is powered by the central electronic module (CEM) via the relay for courtesy lighting (2/89). The lighting in the sun visor is activated when the cover for the vanity mirror is opened. The lighting in the glove compartment is activated when the cover for the glove compartment is opened.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.