why is my BMW X5 F15 (2014-2019) blowing hot air instead of cold

Solution

1. Preparation

• Gather tools and parts needed for repairs.
• Disconnect the vehicle battery to prevent any electrical issues.
• Ensure the vehicle is parked on a level surface and the engine is cool.

2. Refrigerant Recharge

1. Connect the AC manifold gauge set to the low and high-pressure service ports.
2. Check the refrigerant level; if low, proceed to recharge.
3. Use an appropriate refrigerant (R-134a) and follow the manufacturer's specifications for the amount.
4. Monitor the gauges to ensure pressures are within normal operating range.

3. AC Compressor Inspection

1. Locate the AC compressor and inspect electrical connections.
2. Test the compressor clutch; if it does not engage, check the power supply and ground.
3. If the compressor is faulty, remove it by:
   • Disconnecting refrigerant lines (recover refrigerant if necessary).
   • Removing mounting bolts with the appropriate socket.
   • Detaching electrical connectors.
4. Replace the compressor with a new unit and reassemble in reverse order.

4. Blend Door Actuator Replacement (if necessary)

1. Remove the dashboard or center console as needed for access.
2. Locate the blend door actuator and disconnect electrical connectors.
3. Unscrew and remove the actuator from its housing.
4. Install a new actuator and ensure it is properly calibrated.

5. Reassemble and Test

• Reconnect the battery.
• Start the vehicle and turn on the AC to test its operation.
• Monitor for cool air and ensure components are functioning correctly.