what does it mean if my BMW X5 F15 (2014-2019) is blowing hot air from AC

Solution

1. Preparation

• Tools Required: OBD-II scanner, manifold gauge set, basic hand tools, refrigerant recovery machine (if needed)
• Ensure the engine is off and the vehicle is parked on a level surface.

2. Check Refrigerant Level

• Connect the manifold gauge set to the low and high-pressure ports of the AC system.
• Read the pressure levels; if low, proceed to recharge the system.
• If pressures are normal, the issue may lie elsewhere.

3. Recharge the AC System

• If refrigerant is low, use a refrigerant recovery machine to evacuate the existing refrigerant.
• Recharge the system with the appropriate type and amount of refrigerant (R-134a for this model).
• Follow manufacturer specifications for the correct charge amount.

4. Inspect and Replace Components

• If refrigerant levels are adequate, inspect the AC compressor and its electrical connections.
• Replace the AC compressor if it is not engaging or if there are signs of failure.
• Check the expansion valve and replace if clogged or malfunctioning.

5. Check Cabin Air Filter

• Locate the cabin air filter, usually behind the glove compartment.
• Remove the filter and inspect for clogs or debris.
• Replace with a new cabin air filter if dirty.