how to fix the air conditioning on my Volkswagen Golf MK7 (2015-2019)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle's battery to ensure safety.

Tools Required:

• OBD-II scanner
• Refrigerant gauge
• Socket set
• Multimeter
• Screwdrivers
• Safety goggles and gloves

2. Check and Recharge Refrigerant

• Sub-step 1: Connect the refrigerant gauge to the low-pressure service port.
• Sub-step 2: Read the pressure on the gauge; if low, recover remaining refrigerant with a recovery machine (if applicable).
• Sub-step 3: Recharge the system with the appropriate type and amount of refrigerant (R-134a).

3. A/C Compressor Inspection

• Sub-step 1: Locate the A/C compressor and visually inspect for any signs of damage or leaks.
• Sub-step 2: Use a multimeter to check the compressor’s electrical connections for continuity.
• Sub-step 3: If the compressor is faulty, remove it by disconnecting the electrical connector and unscrewing the mounting bolts, then replace it with a new unit.

4. Replace Cabin Air Filter

• Sub-step 1: Locate the cabin air filter housing, usually behind the glove compartment.
• Sub-step 2: Remove any screws or clips, then carefully take out the old filter.
• Sub-step 3: Install a new cabin air filter, ensuring it is oriented correctly.

5. Clean or Replace A/C Condenser

• Sub-step 1: Inspect the condenser for any debris; if dirty, clean it using compressed air or a soft brush.
• Sub-step 2: If the condenser is damaged or leaking, disconnect the refrigerant lines and remove it by unscrewing the mounting bolts, then replace it with a new condenser.