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.
CLIMATRONIC Control Module (CCM): Notes
Climatronic Control Module (CCM) is integrated with A/C-heater control head and cannot be serviced separately. CCM is equipped with Diagnostic Trouble Code (DTC) memory which can be checked using Scan Tool (VAG 1551). Automatic climate control system receives input information from various electrical components and sensors. This information is processed by CCM in accordance with specified values which provide corresponding output signals that control electrical components.
A Diagnostic Trouble Code (DTC) is set when a malfunction occurs which will have a permanent adverse effect on operation of CCM. If a DTC is present, A/C-heater control head will display flashes for about 15 seconds when ignition is turned on. On malfunctions that do not cause display to flash, CCM allows emergency operation at preprogrammed settings indicated on display.
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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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