how to fix BMW X3 G01 (2018-2024) air conditioning not working properly

Solution

1. Preparation

• Gather tools and materials: OBD-II scanner, manifold gauge set, socket set, screwdrivers, refrigerant (if needed), cabin air filter.
• Ensure the vehicle is parked on a level surface and the engine is off.

2. Check Refrigerant Level

• Sub-steps:
  1. Connect the low-pressure side of the manifold gauge set to the service port on the AC system.
  2. Start the engine and turn on the AC to maximum settings.
  3. Read the pressure on the gauge; it should be within the manufacturer’s specified range.
  4. If low, proceed to recharge the system with the correct type and amount of refrigerant.

3. Inspect and Replace Components

• Sub-steps:
  1. If the compressor is not engaging, check the electrical connections and fuses related to the AC system.
  2. Replace any blown fuses or damaged wiring.
  3. If the cabin air filter is clogged, remove the filter housing cover, replace with a new filter, and reassemble.
  4. Clean or replace the AC condenser if any blockages or damage is found.

4. Test and Recharge AC System

• Sub-steps:
  1. If refrigerant was added, run the AC system for 10-15 minutes.
  2. Monitor the low and high-pressure readings; ensure they stabilize within the normal range.
  3. If the system is cycling too frequently, check for leaks and repair as necessary.

5. Final Checks

• Sub-steps:
  1. Inspect the system for any visible leaks using UV dye or soapy water.
  2. Ensure all connections are secure and there are no loose components.
  3. Confirm that the AC system is functioning properly by checking the airflow and temperature output.