why does my BMW X5 G05 (2019-2024) AC blow warm air instead of cold?

Solution

1. Preparation

• Tools Required: Safety glasses, gloves, OBD-II scanner, manifold gauge set, UV leak detection kit, standard socket set.
• Ensure the vehicle is parked on a level surface and the engine is turned off. Disconnect the battery.

2. Recharge Refrigerant

• Sub-steps:
  1. Connect the manifold gauge set to the high and low-pressure service ports on the AC system.
  2. Check the pressure readings; if low, proceed to add refrigerant.
  3. Use the appropriate R-1234yf refrigerant for the BMW X5 G05.
  4. Slowly add refrigerant while monitoring the pressure gauges until they reach the manufacturer's specified levels.
  5. Disconnect the manifold gauge set and reconnect the service ports.

3. Replace AC Compressor (if necessary)

• Sub-steps:
  1. If the AC compressor is not engaging, remove the drive belt by releasing the tensioner.
  2. Disconnect the electrical connector and refrigerant lines from the compressor.
  3. Unbolt the compressor from its mounting brackets using the appropriate socket size.
  4. Install the new compressor by reversing the removal steps, ensuring all seals are replaced.
  5. Reconnect the refrigerant lines and electrical connector.

4. Replace Cabin Air Filter (if blocked)

• Sub-steps:
  1. Locate the cabin air filter housing, typically found behind the glove compartment.
  2. Remove the glove compartment to access the filter housing.
  3. Remove the old cabin air filter and replace it with a new one, ensuring proper orientation.
  4. Reassemble the glove compartment.