The Mercedes-Benz M Class Third Generation (W166) was produced from 2011-present. This German import sport utility vehicle offers state-of-the-art systems and technologies, such as 4-ETS, a four-wheel electronic traction system, and, in newer models, Airmatic suspension. Nevertheless, as with any vehicle, this M Class is known for a few common problems, including hesitant cold start-up.
Some drivers have noticed that, although their car will start, they are unable to shift. Other owners have mentioned that they have received a warning message stating that they should not shift and that they must contact the dealer. Others yet report that the vehicle feels stiff for the first few miles of driving, and that it also feels as if it is stuck in first or second gear. These reports seem to be, mostly, for low-mileage vehicles. Owners with some working knowledge of automobiles have described the sensation as the car acting fuel starved.
There are a variety of possible causes for the problems above, and the core issue can be difficult to diagnose because it can be tough to replicate. It might be wise to leave your car at the garage overnight, so that the technicians can start the engine cold. There could be issues with the fuel filter, fuel pump, or the fuel itself. Alternatively, the problem could be a faulty electronic module, or your M Class’ software might need to be updated.
Don’t wait until you are stranded to call a nearby Mercedes-Benz service shop. An independent German import mechanic will be able to offer affordable and professional advice and repairs. Moreover, these experts will be able to tell you which issues might be covered under warranty.
Search for a local, independent Mercedes-Benz repair shop with Mercedes-Benz mechanics that have dealer-level expertise at a fraction of the expense.