why does my Porsche Cayenne E3 (2018-Present) air conditioning blow warm air

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface.
• Disconnect the vehicle’s battery to ensure safety while working on electrical components.

2. Recharge Refrigerant

• Tools Required: Manifold gauge set, refrigerant (R-134a or R-1234yf, depending on the system).
• Sub-steps:
  1. Connect the low-pressure side of the manifold gauge to the A/C service port.
  2. Start the engine and turn on the A/C to the maximum setting.
  3. Check the pressure readings on the gauge; if low, proceed to add refrigerant.
  4. Slowly add refrigerant until the system reaches the recommended pressure.
  5. Monitor the gauges while adding to avoid overcharging.

3. Replace Cabin Air Filter

• Tools Required: Screwdriver or appropriate tools for the vehicle's cabin filter access.
• Sub-steps:
  1. Locate the cabin air filter housing (usually behind the glove box).
  2. Remove the cover and take out the old filter.
  3. Inspect the housing for debris and clean if necessary.
  4. Install the new cabin air filter, ensuring it is oriented correctly based on airflow direction.
  5. Reinstall the cover securely.

4. Inspect and Replace A/C Compressor

• Tools Required: Socket set, torque wrench, A/C compressor replacement.
• Sub-steps:
  1. Locate the A/C compressor and disconnect the electrical connector.
  2. Remove the mounting bolts securing the compressor to the engine.
  3. Disconnect the refrigerant lines (ensure the system is properly evacuated before this step).
  4. Remove the old compressor and install the new one.
  5. Reconnect the refrigerant lines and electrical connector, ensuring all connections are tight.