my Toyota RAV4 XA50 (2019-2024) air conditioning not blowing cold air

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface with the engine off.
• Disconnect the battery to prevent any electrical shorts.

2. Recharge Refrigerant

• Tools Required: Refrigerant canister, manifold gauge set, safety glasses, gloves.
• Connect the manifold gauge set to the low-pressure port of the AC system.
• If the refrigerant level is low, connect the refrigerant canister to the low-pressure side and open the valve to allow refrigerant to flow into the system. Monitor the pressure gauge.
• Stop filling when the recommended pressure is reached (typically between 30-40 psi on the low side).

3. Inspect and Replace AC Compressor (if necessary)

• Tools Required: Socket set, wrench set, AC compressor removal tool, torque wrench.
• Remove the serpentine belt from the AC compressor by releasing the tensioner.
• Disconnect the electrical connector and refrigerant lines from the AC compressor.
• Remove the mounting bolts and carefully take out the old compressor.
• Install the new compressor, ensuring proper alignment and tightness of bolts at the manufacturer-specified torque value.
• Reconnect the refrigerant lines and electrical connectors.

4. Check and Replace AC Relay/Fuses

• Tools Required: Multimeter, replacement fuses/relay.
• Locate the fuse box and identify the AC relay and associated fuses.
• Use a multimeter to test for continuity; replace any faulty components with new ones.

5. Reconnect and Test System

• Reconnect the battery and turn on the vehicle.
• Set the AC to maximum and monitor for cold air flow.
• Check for any unusual noises indicating compressor issues.