how to fix weak airflow from the AC in my Volkswagen Golf MK7 (2015-2019)?

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the vehicle battery to ensure safety during repairs.

2. Replace Cabin Air Filter

1. Locate the cabin air filter compartment, typically found behind the glove box.
2. Open the glove box and remove it by detaching the limiting strap.
3. Remove the cabin air filter cover clips and take out the old filter.
4. Insert a new cabin air filter, ensuring it is oriented correctly (follow airflow direction arrows).
5. Reassemble the glove box and secure it.

3. Check and Recharge Refrigerant

1. Connect a refrigerant gauge to the AC service port.
2. Check the low and high-pressure readings to determine if the refrigerant is low.
3. If low, add the appropriate refrigerant (R-1234yf for MK7) until it reaches manufacturer-specified levels.
4. Disconnect the gauge and ensure all service ports are securely capped.

4. Inspect and Replace Blower Motor (if necessary)

1. Access the blower motor assembly, which is usually located under the dashboard on the passenger side.
2. Disconnect the electrical connector from the blower motor.
3. Remove the mounting screws and take out the blower motor assembly.
4. Inspect the motor for damage or debris; replace it if defective.
5. Reinstall the new blower motor, secure it with screws, and reconnect the electrical connector.

5. Clear Duct Obstructions

1. Use a flashlight to inspect the AC ducts for any visible blockages.
2. If any debris is found, carefully remove it using a vacuum or specialized tools.
3. Ensure that all duct connections are secure and free from leaks.