2012 Mercedes-Benz GL450 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2012 Mercedes-Benz GL450
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2012 Mercedes-Benz GL450 Problems
Vehicles equipped with a 7-speed automatic transmission may develop a rough shifting condition, most commonly going up from first to second gear and going down from third to second or second to first gear. Our technicians tell us this is due to an internal component failure. Mercedes has released updated parts; the transmission will need to be removed and disassembled to complete the necessary repairs.
An engine Oil leak may develop from the PCV vent housing on the valve cover and/or the inspection plate on the front of the engine.
2012 Mercedes-Benz GL450 Questions
I just bought it from a used dealership. Nov 15th 2014
The SUV is flooded but it appears the water did not get inside since it still smells like new in there.