how to troubleshoot Tesla Model Y Current (2020-present) AC not working

Solution

1. Preparation

• Gather necessary tools and parts, and ensure the vehicle is parked on a level surface.
• Disconnect the vehicle from any charging source to avoid electrical hazards.

2. Check and Recharge Refrigerant

• Sub-steps:
  1. Connect a refrigerant pressure gauge to the low-pressure service port.
  2. If the pressure is low, evacuate the system to remove any moisture and contaminants using a vacuum pump.
  3. Recharge the AC system with the appropriate refrigerant (R-134a or R-1234yf) according to Tesla specifications, ensuring the correct amount is added (typically around 1.5-2.0 lbs).

Tools Required:

• Refrigerant pressure gauge
• Vacuum pump
• Refrigerant canister

3. Inspect and Replace AC Compressor if Necessary

• Sub-steps:
  1. Locate the AC compressor, typically mounted near the front of the engine compartment.
  2. Disconnect the electrical connector from the AC compressor.
  3. Remove the mounting bolts and detach the compressor from its brackets.
  4. Install the new AC compressor and tighten bolts to the manufacturer's torque specifications.
  5. Reconnect the electrical connector and check for proper alignment.

Tools Required:

• Socket set
• Torque wrench

4. Replace Cabin Air Filter

• Sub-steps:
  1. Open the front trunk and locate the cabin air filter compartment.
  2. Remove the cover panel by unscrewing or unclipping it.
  3. Take out the old cabin air filter and clean any debris from the compartment.
  4. Install the new cabin air filter, ensuring it is oriented correctly.
  5. Reattach the cover panel securely.

Tools Required:

• Screwdriver or trim removal tool