Mercedes-Benz E320 CDI Repair and Maintenance

A guide to problems, costs, maintenance and repair for your Mercedes-Benz E320 CDI

Mercedes-Benz E320 CDI Problems

Leaks 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.

Failed Gateway Module May Cause Lack of Audio/Cell Phone Functionality

Lack of audio or cell phone functionality may be related to the failure of the audio gateway module.

Tire Wear Caused By Worn Front Thrust Link Bushings

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.

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Mercedes-Benz E320 CDI Questions

Car 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?

Staring engine when cold issue. (1 answer)

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...

why does my car have a vibration at 40 to 60mph similar to an unbalanced wheel (3 answers)

comes and goes

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Mercedes-Benz E320 CDI Recalls

Diesel 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.

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Mercedes-Benz E320 CDI Reviews

With the name of Mercedes Benz quality is the last thing in their mind when it went into production. The car is designed to last for 5 years not more than 100K miles when your extended waranty runs out. Electrical wiring is of poor quality insulation break off after 6 years, putting the owner and his family in danger from the car catching fire due to electrical short. MB might need to go back t...

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