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.
Car Access System
The CAS control unit monitors the status of the central locking system. The hood contact switch is connected to the CAS control unit. The opening of the hood is thus monitored (open or closed). The CAS control unit feeds this signal to the DWA control unit via the K-CAN. The CAS control unit also supplies the flowing signals:
- Trunk-lid unlocking via remote control
- Key in ignition starter switch
- Status of convenience opening/closing
The Car Access System (CAS) supplies input signals with regard to the terminal management (e.g. terminal 15 ON).
The adaptive headlights control unit is activated when terminal 15 is switched ON.
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.