2009 Mercedes-Benz E550 4MATIC Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2009 Mercedes-Benz E550 4MATIC
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2009 Mercedes-Benz E550 4MATIC ProblemsCheck Engine Light Due to Faulty Camshaft Adjuster Solenoid
The camshaft adjuster solenoid (which is related to the variable valve timing system) may fail or timing chain/balance shaft components may wear, resulting in illumination of the Check Engine Light and various drivability issues. Mercedes-Benz has released a service bulletin outlining specific repair instructions depending on fault codes stored.
Water can damage the weight sensor in the front, passenger seat, causing the SRS (airbag) light to illuminate. There is an electrical component in the seat cushion susceptible to fluid damage. Any spills should be dried up immediately in order to try and prevent damage to the sensor.
The engine may develop a stalling and/or no start condition due to a failed crankshaft position sensor.