Mercedes-Benz R320 CDI Repair and Maintenance

A guide to problems, costs, maintenance and repair for your Mercedes-Benz R320 CDI

Select your Mercedes-Benz R320 CDI's year to get more detailed information:

Mercedes-Benz R320 CDI Problems

The Engine May Stall or Not Start Due to a Faulty Crankshaft Sensor

The engine may stall or not start due to a failed crankshaft position sensor. Replacing the failed sensor should correct this issue.

HVAC Blower Motor May Fail

The HVAC blower motor may fail. This is commonly caused by water entry through the cabin air filter areas during heavy rain or snow. Failed blower motors should be replaced. Our technicians tell us there is no special fix for this issue at this time.

The Transmission Drive Selector Module May Fail

The transmission drive selector module may fail resulting in the loss of gear selection capability. This condition can leave the vehicle stranded, and will require replacement of the drive selector module.

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Mercedes-Benz R320 CDI Questions

need detailed instructions how to replace instrument lcd display. (1 answer)

during cold winter instrument lcd went crazy, pixels started to change color from black to yellow, and its looks like a yellow worms inside the lcd, its growing and changing shapes from time to time, numbers still visible. thank you in advance.

How do I open the hood on my R320 CDI (3 answers)

I just need to find out how to open the hood as there is no switch of which I can easily see

How do I change the fuses in the rear trunk fuse box??? They seem REALLY stuck. (1 answer)

I have NO audio in my car. My navigation works, the radio and cd player "look" like they work. I'm getting a message, however, stating that the phone is not available and the satellite radio is not available. All signs pointing to a fuse being out. Or more than one? I've lo...

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Mercedes-Benz R320 CDI Recalls

Mercedes–Benz Recalls 2008 Vehicles for Defect in Power Steering Oil Pressure Driving Pin

Mercedes–Benz is recalling certain 2008 GL-Class, M-Class, and R-Class vehicles for a possible defect in the driving pin used to control power steering oil pressure. If the pin breaks during normal vehicle turning, the steering assist will no longer operate, causing difficulty operating the steering wheel. Dealers will replace the steering gear in affected vehicles.

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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