Compressor, Replacing On Account Of Leakage Or Internal Damage
- Pay attention to the general information for replacing components. Refer to GENERAL INFORMATION FOR REPLACING COMPONENTS .
Vehicles With A High-Voltage System (Hybrid Vehicles)
-- Pay attention to the high-voltage system danger classification. Refer to HIGH VOLTAGE VEHICLES SAFETY PRECAUTIONS .
-- Observe safety precautions when working on the high-voltage system. Refer to SAFETY PRECAUTIONS WHEN WORKING ON VEHICLES WITH HIGH-VOLTAGE SYSTEM .
-- Pay attention to safety precautions when working near high-voltage components. Refer to SAFETY PRECAUTIONS WHEN WORKING NEAR HIGH-VOLTAGE COMPONENTS .
All Vehicles
Replacing the A/C compressor for example due to noises from the A/C compressor or no A/C compressor output.
-- Discharge the refrigerant circuit. Refer to WORKING WITH A/C SERVICE STATION .
-- Remove the A/C compressor. Refer to A/C COMPRESSOR / A/C COMPRESSOR, REMOVING AND INSTALLING (vehicle-specific repair information).
-- Clean the refrigerant circuit (flush with refrigerant R1234yf). Refer to REFRIGERANT CIRCUIT, CLEANING .
For internal damage (to the A/C compressor) check the refrigerant hoses and condenser for example shavings have penetrated clean refrigerant hoses and condenser (flush with refrigerant R1234yf) and if necessary replace the refrigerant hoses. Refer to REFRIGERANT CIRCUIT, CLEANING .
On some vehicles (for example vehicles with two evaporators) the refrigerant oil quantity in the refrigerant circuit can be greater than the quantity which is in the replacement compressor. On these vehicles add the remaining refrigerant oil quantity to the refrigerant circuit if necessary. Refer to the appropriate information (REFRIGERANT CIRCUIT / REFRIGERANT CIRCUIT / REFRIGERANT CIRCUIT ) (vehicle-specific repair information) and TECHNICAL DATA (REFRIGERANT & APPROVED OIL CAPACITIES) or MAINTENANCE (FLUID CAPACITY TABLES), DIAGNOSIS (1 OF 8) (CABRIOLET) / MAINTENANCE (FLUID CAPACITY TABLES), DIAGNOSIS (2 OF 8) (CABRIOLET) / MAINTENANCE (FLUID CAPACITY TABLES), DIAGNOSIS (3 OF 8) (CABRIOLET) / MAINTENANCE (FLUID CAPACITY TABLES), DIAGNOSIS (4 OF 8) (CABRIOLET) / MAINTENANCE (FLUID CAPACITY TABLES), DIAGNOSIS (5 OF 8) (CABRIOLET) / MAINTENANCE (FLUID CAPACITY TABLES), DIAGNOSIS (6 OF 8) (CABRIOLET) / MAINTENANCE (FLUID CAPACITY TABLES), DIAGNOSIS (7 OF 8) (CABRIOLET) / MAINTENANCE (FLUID CAPACITY TABLES), DIAGNOSIS (8 OF 8) (CABRIOLET) (vehicle-specific repair information).
Do not flush the refrigerant circuit if there is a fault in the electronics in the electronically driven A/C compressor (for example the A/C Compressor Control Module -J842- is defective). In this case, replace the A/C compressor / the refrigerant circuit without flushing it. Refer to A/C COMPRESSOR, REPLACING WITHOUT THE NEED FOR FLUSHING REFRIGERANT CIRCUIT .
-- Replace The Desiccant Bag/Dryer Cartridge (Or Reservoir/Receiver/Dryer). Refer to RECEIVER/DRYER, REMOVING AND INSTALLING / DRYER BAG/DRYER CARTRIDGE, REMOVING AND INSTALLING or the appropriate information (REFRIGERANT CIRCUIT / REFRIGERANT CIRCUIT / REFRIGERANT CIRCUIT ) (vehicle-specific repair information).
-- Examine the expansion valve for dirt or corrosion; replace if necessary. Refer to EXPANSION VALVE, REMOVING AND INSTALLING or the appropriate information (REFRIGERANT CIRCUIT / REFRIGERANT CIRCUIT / REFRIGERANT CIRCUIT ) (vehicle-specific repair information).
-- Assemble, evacuate and charge the refrigerant circuit. Refer to WORKING WITH A/C SERVICE STATION .