Operation CHARM: Car repair manuals for everyone.

Climatronic A/C System with Automatic Control






Climatronic A/C System with Automatic Control

The vehicle has 2 zone right/left air conditioning or 4 zone right/left, front/rear air conditioning.

The flow of air and temperature with 4 zone air conditioning for the driver, front passenger and two passengers in the rear can be adjusted within a certain temperature range independently.

Pressing the button "AUTO" will reverse all settings which deviate from the automatic operation.

In "ECON" operation only the A/C compressor is set to almost zero delivery. The heating and ventilation operation continues to be controlled electronically.

If there is a deviation from the automatic operation before ignition is switched off, the selected functions remain permanently stored.

Deviations from automatic operation --> respective operating instructions.

If there is a malfunction in the system, first interrogate the DTC memory Vehicle Diagnostic, Testing and Information System (VAS 5051B) in "Guided Fault Finding" function.

The refrigerant circuit should be flushed with refrigerant R134a if:

In the event of dirt or other contamination in the refrigerant circuit.

If vacuum reading is not maintained on evacuating a leak-free refrigerant circuit pressure build-up due to moisture in refrigerant circuit.

If refrigerant circuit has been left open for longer than normal following, for example an accident.

If pressure and temperature measurements in the refrigerant circuit indicate the likelihood of moisture

If it is not clear how much refrigerant oil is in the refrigerant circuit.

The A/C compressor had to be replaced due to internal damage like noise or no output.

The flushing procedure is described in the repair information.