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2012 Mercedes-Benz GL450 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2012 Mercedes-Benz GL450

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.

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