Volkswagen Golf Eighth Generation (2020-present) AC not blowing cold air how to fix

Solution

1. Preparation

• Tools Required: OBD-II scanner, refrigerant gauge, basic hand tools (screwdrivers, socket set), multimeter.
• Safety Warnings: Disconnect the battery before working on electrical connections. Wear gloves and safety glasses when handling refrigerants.

2. Recharge Refrigerant

• Sub-steps:
  1. Connect the refrigerant gauge to the low-pressure service port.
  2. Check the current refrigerant levels and compare with manufacturer specifications.
  3. If low, add the appropriate refrigerant (R-134a or R-1234yf, depending on the model).
  4. Monitor the system while adding refrigerant until the pressure stabilizes within the normal range.

3. Replace Cabin Air Filter

• Sub-steps:
  1. Locate the cabin air filter housing, usually behind the glove compartment.
  2. Remove the glove compartment for easier access.
  3. Open the filter housing and carefully remove the old filter.
  4. Install the new cabin air filter, ensuring it is oriented correctly.
  5. Reassemble the glove compartment.

4. Repair Electrical Connections

• Sub-steps:
  1. Inspect wiring harnesses for damage or corrosion.
  2. Clean any corroded connections using electrical contact cleaner.
  3. Reconnect any loose wires securely, ensuring a tight fit.

5. Test and Replace AC Compressor (if necessary)

• Sub-steps:
  1. If the compressor does not engage, use a multimeter to check for power at the compressor connector.
  2. If no power is detected, trace the wiring back to the AC control module.
  3. If the compressor is faulty, remove the drive belt and disconnect the compressor.
  4. Install a new AC compressor and reattach the drive belt, ensuring proper tension.