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.
Description of programmable parameters, 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
- to adapt the function of the control module for the equipment levels of the car (passenger compartment ventilation filter, parking heater)
- to adapt the function of the control module to the requirements of the driver.
Passenger compartment ventilation filter compensation, status
Indicates the status for the activation of passenger compartment ventilation filter compensation.
OFF = Compensation not active
ON = Compensation active (preset)
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)
Blower fan speed, value
Allows the speed to be modified for the blower fan when the climate control system is in AUTO mode. Modifying the parameters means that the climate control system either blows more or less air than the preprogrammed value, to correspond to the request of the driver.
Gives the voltage value for adaptation of the blower fan speed.
-1.0 - +1.0 V (0 V preset)
Setting for air distribution for the floor / defroster residual heat, value
Indicates the setting of the air distribution between the floor and defroster.
10/90 - 90/10% (70/30% preset)
Setting for air distribution for the floor / defroster parking heater, value
Indicates the setting of the air distribution between the floor and defroster.
10/90 - 90/10% (70/30% preset)
Passenger compartment temperature, value
The passenger compartment temperature in relation to the passenger compartment temperature switch position can be adjusted by programming a compensation value.
The passenger compartment temperature can be raised or lowered by a maximum of 2 °C (4 °F) from the normal value. This allows the temperature to be adjusted in accordance with the driver's wishes.
0 = -1.0 °C/-2.0 °F
1 = -0.5 °C/-1.0 °F
2 = 0.0 °C / 0.0 °F (default value)
3 = +0.5 °C/+1.0 °F
4 = +1.0 °C/+2.0 °F
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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.
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