Your German car's air conditioner may not be getting cold enough because the refrigerant level is low, airflow is restricted, or a system component is malfunctioning. A low refrigerant charge is common, but a leak usually causes it. Other possible causes include a clogged cabin air filter, a dirty condenser, a weak or failing cooling fan, a failing compressor, a faulty expansion valve, a blend door problem, or an electrical issue. The A/C may feel cooler while driving but warmer at idle, when parked, or in slow city traffic if the condenser is not getting enough airflow. Humidity and extreme heat of the outside air can also make weak cooling more noticeable. A technician should check the A/C vent temperature, system pressures, airflow, and for leaks to identify the actual cause of poor A/C performance rather than guessing.
German auto repair service in Ann Arbor, MI