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.
Resources for the Repair and Maintenance of your Mercedes-Benz R320 CDI
Mercedes-Benz R320 CDI Models:
Mercedes-Benz R320 CDI Problems
HVAC Blower Motor May Fail
Heating & Air Conditioning --
Verified
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 Engine May Stall or Not Start Due to a Faulty Crankshaft Sensor
Engine --
Verified
The engine may stall or not start due to a failed crankshaft position sensor. Replacing the failed sensor should correct this issue.
The panoramic sunroof and shade may stop working
Miscellaneous --
Verified
The panoramic sunroof and shade may stop working due to a broken sunshade drive/guide.
Mercedes-Benz R320 CDI Recalls (Recent)
Mercedes–Benz Recalls 2008 Vehicles for Defect in Power Steering Oil Pressure Driving Pin
Suspension & Steering, January 28, 2009
RepairPal Expert Overview:
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.
Mercedes-Benz R320 CDI Questions and Answers
jwratts, 2008 Mercedes-Benz R320 CDI, Indianapolis, IN
Car has had the transmission software flashed several times. seems to work for a short time. main problem is 3 to 2 and 2 to 1. 2 to 1 is the hardest downshift. Generally the transmission shift...
grezbalina, 2008 Mercedes-Benz R320 CDI, Falmouth, MA
I can use the manual finger paddles behind the steering wheel to shift...the problem really seems to happen with 3rd gear and the automatic function. Took it to dealer who was puzzled and offered ...
lou 62, 2007 Mercedes-Benz R320 CDI, Newton Center, MA
What do you think it is
lou 62, 2007 Mercedes-Benz R320 CDI, Newton Center, MA
my battery light came on, what is the cause?
dreamerz19, 2007 Mercedes-Benz R320 CDI, Newport News, VA
the car stopped while driving. can i have engine damage
Mercedes-Benz R320 CDI Model Years
Recent Mercedes-Benz Repair Estimates