What kind of issues are commonly found in 2001 Mercedes-Benz C240 cars?

The main issue often reported with the 2001 Mercedes-Benz C240 is a faulty stepper motor actuating arm, leading to an annoying clicking sound behind the dashboard, typically occurring at around 105,000 miles. Following closely is the problem of a failed crankshaft position sensor, affecting engine performance. Many drivers also experience issues with spark plugs misfiring and the check engine light turning on due to a malfunctioning catalytic converter. Additionally, failures in the brake light switch and seat control module are common occurrences. Premature wear on sway bar link joints can cause knocking over bumps. Mildew in the heater box is another frequent complaint, resulting in a foul odor in the passenger cabin. Other notable problems include premature brake rotor wear, oil leaks from the oil level sensor, CD changer failures, dead batteries, failed front thrust link bushings, cracks in the heater case, and oil leaks from PCV vent housings.