If you own a car with air suspension, it is important to know how to recognize if your air suspension compressor is failing. The most common symptom of a bad air suspension compressor is that the vehicle's ride height will not adjust when commanded by the driver. This means that no matter which setting you attempt to select, the vehicle remains at its current ride height without any change. Another indication of an issue with your air suspension compressor can be an audible clicking noise from underneath your vehicle during attempts to adjust ride height or when attempting to start your engine after sitting idle for some time. If either of these symptoms are present, it is likely that there is an issue with your air compression system and repairs should be made as soon as possible in order avoid further damage being done and ensure safe driving conditions.