S5 Quattro Coupe V8-42L (CAUA) HVAC Control Module Repair Guide
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Remove the Fresh Air Blower Control Module (J126) - D - from the air intake housing.
Installing
Installation is carried out in the reverse order, when doing this note the following.
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Check DTC memory of A/C control head Climatronic Control Module (J255) and erase any displayed malfunction if necessary. Refer to Vehicle
Diagnosis, Testing and Information System VAS 5051 in "Guided Fault Finding" function.
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To check the function, perform an output Diagnostic Test Mode (DTM) on the A/C system. Refer to Vehicle Diagnosis, Testing and Information
System VAS 5051 in "Guided Fault Finding" function.