How do you charge the air conditioner on a 1996 Toyota Avalon?

To charge the air conditioner on a 1996 Toyota Avalon, first ensure the engine is running and the AC is set to the maximum setting. Locate the low-pressure service port, usually found near the AC compressor, and connect a refrigerant canister with a gauge attached. Open the valve on the refrigerant canister and monitor the pressure on the gauge, adding refrigerant as needed until it reaches the recommended levels. Always wear safety gear and consult the vehicle's service manual for specific guidelines and refrigerant type.