Mercedes-Benz C280 4MATIC Repair and Maintenance

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.

The crankshaft position sensor may fail. Symptoms of this are: The engine will crank—but not start—especially when the engine is warm. The car may start again if it is left to cool off, but it may run roughly or have poor performance. Communicating these specific symptoms to your technician can save diagnostic time.

A dead battery can be caused by a faulty seat control module that does not properly shut down.  Spilling liquids on the front seats can cause these modules to fail.

The failed exhaust camshaft solenoid is on the driver side cylinder head and also on the passenger side intake. I was told by a repair pal certified repair shop that this problem is under the recall by Mercedes Benz and would be repaired at a Mercedes Benz dealership.

repair work was done to my 2007 Mercedes c280. The code shows 02 sensors were swapped, or crossed up. Will this affect the computer and cause the cooler fan not to come on.