why does my BMW X5 G05 (2019-2024) AC only blow hot air

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface, and the engine is off.
• Disconnect the battery to prevent electrical hazards.

2. Check and Recharge Refrigerant

• Tools Required: Manifold gauge set, refrigerant.
• Connect the low and high-pressure gauges to the AC service ports.
• Check the pressure readings; if low, proceed to recharge the system.
• Follow the manufacturer’s specifications to add the correct type and amount of refrigerant.
• Recheck the system for leaks after charging.

3. Inspect and Replace Components

• Tools Required: Socket set, screwdrivers, AC compressor (if necessary), blend door actuator (if necessary).
• If the compressor is not engaging, inspect the electrical connections and fuses related to the AC system.
• If the compressor is faulty, remove the serpentine belt and unbolt the compressor from its mounting.
• Disconnect the refrigerant lines carefully and replace with a new compressor, ensuring proper torque specifications are followed.
• If the blend door actuator is malfunctioning, remove the dashboard cover and replace the actuator.

4. Final Assembly

• Reinstall any components removed during the inspection and repair.
• Reconnect the battery and start the vehicle.
• Test the AC system to ensure proper operation.