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.
Seat heating
The seat heating system heats the seat cushion and backrest including the side sections. Separate seat heating switches (push-buttons) in the centre console switch cluster (SZM) control the driver's seat and passenger's seat.
The centre console switch cluster controls the seat heating electronically. The system is monitored by a temperature sensor. The seat heating is operational as from terminal 15 "ON".
3 LEDs located above the seat heating switches indicate the heating stage currently active in the seat heating system.
The current at the centre console switch cluster would be too high if the seat heating and steering column adjustment were operated simultaneously. The seat heating is interrupted in order to protect the centre console switch cluster (SZM).
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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.