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.
Programming the climate control module (CCM), customer adaptation
Certain parameters for the climate control module (CCM) can be read off and programmed using this function. The purpose of this programming is to:
- read the programmed parameters before replacing the control module. This is so the same parameters can be entered into the new control module
- adapt the function of the control module to the requirements of the driver (customer adaptation)
- adapt the function of the control module for the equipment levels of the vehicle (passenger compartment ventilation filter, parking heater).
Blower fan run-on, status
Provides the status for activation of the blower fan run-on. The run-on dries the evaporator and prevents bad odors which may otherwise result from residual moisture in the system.
OFF = Run-on inactive
ON = Run-on active (preset)
Air distribution floor/defroster when residual heater is active
Parameter programming controls the desired setting of air distribution between the floor and defroster when the residual heater is active.
The function means that the coolant can circulate for around 20 minutes after the engine has been switched off. In this way, the passenger compartment can be heated for up to 20 minutes without the engine having to be running. The function is started via the control stalk.
The function can be activated for a further 20 minutes, however, the temperature of the coolant will have cooled considerably and the residual heat will therefore be lower.
Possible settings (70/30% preset):
- 90/10 (90% floor, 10% defroster)
- 80/20 (80% floor, 20% defroster)
- 70/30 (70% floor, 30% defroster)
- 60/40 (60% floor, 40% defroster)
- 50/50 (50% floor, 50% defroster)
- 30/70 (30% floor, 70% defroster)
- 10/90 (10% floor, 90% defroster).
Programming the seat temperature
Enter the setting for the high and low temperature levels for heating the front seat.
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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.