how to fix the AC not blowing cold air in my Toyota RAV4 XA40 (2013-2018)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle's battery to ensure safety during the repair.
• Allow the engine to cool down before starting work.

2. Recharge the AC System

• Tools Required: Refrigerant manifold gauge set, refrigerant (R-134a), safety goggles, gloves.
• Attach the low-pressure side gauge to the service port.
• Check the current refrigerant level; if low, proceed to recharge.
• Open the refrigerant can and let it flow into the system until the desired pressure is reached (typically 25-45 PSI on the low side).
• Monitor the high side gauge to ensure it remains within safe operating parameters (150-250 PSI).

3. Inspect and Replace the Cabin Air Filter

• Tools Required: Screwdriver (if applicable).
• Locate the cabin air filter housing (usually behind the glove box).
• Remove the glove box or housing cover if necessary.
• Remove the old cabin air filter and inspect for dirt or blockages.
• Install a new OEM or high-quality cabin air filter, ensuring the airflow direction is correct.

4. Check and Repair Electrical Connections

• Tools Required: Multimeter, wire connectors (if necessary).
• Inspect electrical connectors leading to the AC compressor and control panel.
• Use a multimeter to check for continuity and voltage at the compressor's connector.
• Repair or replace any damaged wires or connectors as necessary.

5. Test and Diagnose Further

• Reconnect the battery and start the vehicle.
• Turn on the AC to the maximum setting and observe if the airflow improves.
• If the issue persists, consider replacing the AC compressor or expansion valve if they are faulty.