my Volkswagen Golf MK5 (2004-2008) AC blows warm air what's wrong

Solution

1. Preparation

• Gather tools and parts required.
• Ensure the vehicle is parked on a level surface and the engine is off.
• Disconnect the battery to avoid electrical shocks.

2. Replace AC Fuse

• Locate the fuse box; refer to the owner's manual for the exact location.
• Remove the AC fuse and inspect it. Replace with the same amperage if blown.

3. Repair or Replace AC Compressor

• Tools Required: Socket set, torque wrench, AC manifold gauge set, refrigerant.
• Disconnect the battery.
• Remove the serpentine belt from the AC compressor.
• Disconnect the electrical connector from the AC compressor.
• Remove the AC lines connected to the compressor using a wrench.
• Remove the mounting bolts securing the compressor and take it out.
• Install the new compressor by reversing the removal steps. Ensure all connections are secure.

4. Recharge Refrigerant

• Tools Required: Refrigerant and a refrigerant gauge.
• Connect the refrigerant gauge to the service ports.
• Follow the manufacturer’s specifications for the correct amount of refrigerant to add.
• Start the engine and turn the AC to maximum to allow refrigerant to circulate.

5. Test and Finalize

• Reconnect the battery.
• Start the vehicle and check if the AC is blowing cold air.
• Monitor the system for any unusual noises or issues.