Where is low pressure ac valve C320 Mercedes?

The low-pressure AC valve on a Mercedes C320 is typically located on the accumulator or receiver/dryer, which is situated near the front of the engine bay. Look for a small metal fitting that is connected to the AC system's low-pressure side, usually marked by a blue or black cap. Access may require moving some components for better visibility. Always ensure the system is off and safely depressurized before attempting any service.