my Porsche 911 992 (2019-Present) AC is blowing warm air what could be wrong

Solution

1. Preparation

• Ensure the vehicle is parked on a level surface.
• Disconnect the battery negative terminal to ensure safety.
• Gather necessary tools and parts.

2. Refill Refrigerant

• Tools Required: Manifold gauge set, refrigerant canister, safety goggles, gloves.
• Connect the low-pressure side of the manifold gauge to the AC service port.
• Check the current refrigerant pressure and compare it with manufacturer specifications.
• If low, add refrigerant slowly while monitoring the gauge. Do not overfill.
• Disconnect the gauge set and reconnect the service port cap.

3. Replace AC Compressor (if necessary)

• Tools Required: Socket set, torque wrench, AC compressor removal tool, refrigerant recovery machine.
• Recover refrigerant from the system using the recovery machine.
• Remove the serpentine belt by releasing tension from the tensioner.
• Disconnect the electrical connector and refrigerant lines from the compressor.
• Unbolt the compressor from its mounting bracket and remove it.
• Install the new compressor, ensuring to torque bolts to specifications.
• Reconnect refrigerant lines and electrical connectors, then reinstall the serpentine belt.

4. Replace Cabin Air Filter (if necessary)

• Tools Required: Pliers or a flathead screwdriver (depending on filter type).
• Locate the cabin air filter housing, usually behind the glove box.
• Remove the cover of the housing and pull out the old filter.
• Insert the new filter, ensuring the airflow direction matches the markings.
• Reinstall the cover securely.

5. System Check

• Tools Required: OBD-II scanner.
• Reconnect the battery terminal.
• Start the vehicle and turn on the AC to the maximum setting.
• Use the OBD-II scanner to check for any new error codes.
• Verify that the AC compressor engages and cold air is produced.