my BMW X5 G05 (2019-2024) AC is not cooling, what can I do?

Solution

1. Preparation

• Gather tools: OBD-II scanner, manifold gauge set, basic hand tools, refrigerant refill kit (if needed), safety goggles, and gloves.
• Disconnect the vehicle battery to ensure safety while working on electrical components.

2. Check Refrigerant Levels

• Attach the manifold gauge set to the AC service ports (high and low).
• Assess the pressure readings:
  • Low pressure should be around 30-40 psi and high pressure around 200-250 psi (varies based on ambient temperature).
• If the pressure is low, proceed to the next step.

3. Recharge the AC System

• If refrigerant is low, use the refrigerant refill kit:
  • Connect the refrigerant can to the low-pressure service port.
  • Start the engine and turn the AC to maximum.
  • Slowly release refrigerant into the system while monitoring the low-pressure gauge.
  • Stop adding refrigerant once the pressure reaches the proper level.

4. Inspect and Replace the Cabin Air Filter

• Locate the cabin air filter housing, usually behind the glove compartment.
• Remove the glove compartment or access cover to reach the cabin air filter.
• Inspect the filter for dirt and blockages; replace it if necessary.
• Reassemble the glove compartment.

5. Test the AC System

• Reconnect the vehicle battery.
• Start the engine and turn on the AC system to check for cooling performance.
• Monitor the AC performance and ensure the compressor is engaging properly.