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.
Switches On The Keypad
In principle, the keypad on the climate control module (CCM) can be divided into an upper and lower section. The switches on the lower section directly affect the climate control module (CCM) (3/112) by activating the following functions. For example:
- climate control
- activation of the seat heaters
- etc.
The upper section covers functions of the infotainment system. When these switches are activated, the climate control module (CCM) transmits a signal to the infotainment control module (ICM) (16/1) via the controller area network (CAN). When switches on the keypad are activated, the climate control module (CCM) will light any LEDs, even if the function is not available for any reason.
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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.