Mercedes-Benz E320 CDI Repair and Maintenance
A guide to problems, costs, maintenance and repair for your Mercedes-Benz E320 CDI
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Mercedes-Benz E320 CDI ProblemsLeaks Develop at Differential Seals/Cover on High Mileage/Older Vehicles
High mileage or older vehicles commonly develop leaks from the differential seals and/or cover. Our technicians recommend a complete reseal of the differential unit whenever these leaks are repaired.
Lack of audio or cell phone functionality may be related to the failure of the audio gateway module.
Irregular and premature tire wear can be caused by the front thrust link bushings cracking and causing excessive movement in the suspension. The thrust link bushings are fluid-filled (to help reduce vibration), so if they crack, they will leak oil.
Mercedes-Benz E320 CDI QuestionsCar won't start - dealer diagnosed as CDI (engine) controller failure. (1 answer)
My local mechanic could not find problem and also suspected a control module. Recommended dealer diagnose the problem. What is average repair cost to replace the CDI controller?
When the engine is cold, the glow plug light on the dash will not come on when the key is turned to the "ON" position. If I try turning it further, to the "START" position, the engine will not turn over. The glow plug light must come on and then go out, in order for the igniti...
comes and goes
Mercedes-Benz E320 CDI RecallsDiesel Engine Crankshaft Sensor Failure Causes Engine Stall, No Start
The Diesel engine may stall and not restart due to a faulty crankshaft sensor. Dealers will replace the sensor free of charge to correct the problem.