Volkswagen Golf MK6 (2009-2014) air conditioning not blowing cold, how to repair?

Solution

1. Preparation

• Gather tools and parts necessary for repair.
• Disconnect the vehicle's battery to ensure safety while working on the AC system.

2. Recharge Refrigerant

• Tools Required: Manifold gauge set, refrigerant canister.
• Connect the manifold gauges to the low and high-pressure service ports.
• Start the vehicle and turn on the AC to the maximum setting.
• Check the pressures; if low, attach the refrigerant canister to the low-pressure side.
• Slowly add refrigerant until the correct pressure is achieved as per manufacturer specifications.
• Monitor the system for any rise in pressure and ensure no leaks are detected.

3. Replace AC Compressor (if necessary)

• Tools Required: Socket set, wrenches, torque wrench, AC compressor replacement kit.
• Remove the serpentine belt from the AC compressor.
• Disconnect the electrical connector and refrigerant lines from the compressor.
• Unbolt the compressor from its mounting bracket and remove it.
• Install the new compressor by reversing the removal steps, ensuring all bolts are torqued to specifications.
• Reconnect the refrigerant lines and electrical connector.

4. Clear and Replace Cabin Air Filter

• Tools Required: Flathead screwdriver or trim removal tool.
• Access the cabin air filter compartment, typically located behind the glove box.
• Remove the old filter and check for dirt and debris.
• Install a new cabin air filter, ensuring it is oriented correctly as per the airflow direction indicated.

5. Final Checks

• Reconnect the vehicle's battery.
• Start the engine and run the AC system to ensure it is functioning correctly.
• Monitor for any leaks around the compressor and connections.