The Mercedes-Benz M Class Third Generation (W166), produced from 2011-present, is a luxury midsize sport utility vehicle. Features vary depending on the year the SUV was manufactured, but many of these German import automobiles offer 7G –Tronic Plus seven-speed automatic transmission, Active Lane Departure Warning Systems, and much more. Despite these state-of-the-art technologies, a few common problems, such as door handle malfunctions, have been reported.
There have been reports for both the front and rear driver and passenger side doors. According to owners, they suddenly lack resistance, and then they fail to open from the exterior. Typically, the door can still be opened from the inside, and owners are still able to lock their doors, both manually and with the key fob.
The problem could be cable failures or a lock mechanism issue, such as a faulty spring. Regardless, doors that do not open or are unreliable in any way pose safety risks. Moreover, disassembling a vehicle’s door to troubleshoot such problems also poses safety concerns, as, for example, a falling windowpane can shatter. Unless an owner has a firm understanding of these parts and systems, this is probably not a do-it-yourself repair.
To save money and time, we recommend visiting a nearby independent German auto repair shop. These professionals will be able to diagnose and repair your Mercedes, as they will have the proper knowledge, tools, and resources regarding your third generation M Class. Furthermore, they will also be up-to-date regarding any potential recalls or warranties, which can, of course, result in further savings.
Search for a local, independent Mercedes-Benz repair shop with Mercedes-Benz mechanics that have dealer-level expertise at a fraction of the expense.