my Toyota RAV4 Fifth Generation (2019-present) AC blows warm air what can be the issue

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is off.
• Disconnect the battery to avoid electrical hazards.

2. Recharge the AC System

• Tools Required: Manifold gauge set, vacuum pump, refrigerant (R-134a), refrigerant scale.
• Connect the low-pressure and high-pressure sides of the manifold gauge set to the AC service ports.
• Check the pressure readings; if low, proceed with recharging.
• Use a vacuum pump to evacuate the system for at least 15 minutes to remove moisture.
• Recharge the system with the appropriate amount of refrigerant as specified in the owner’s manual (usually around 2.0 lbs for RAV4).
• Monitor the low-pressure gauge while filling to ensure proper levels.

3. Inspect and Replace Components

• Tools Required: Socket set, wrenches, AC leak detection dye (optional).
• Inspect the AC compressor and associated components for wear or damage. If the compressor is faulty, replace with a new unit.
• Check and replace any damaged AC hoses or seals.
• If leaks were detected, apply AC leak detection dye to identify leaks if necessary.
• Replace the cabin air filter if it is clogged to ensure proper airflow.

4. Test the AC System

• Reconnect the battery and start the vehicle.
• Set the AC to "Max AC" and monitor the temperature at the vents.
• Ensure the compressor engages and operates smoothly without unusual noises.