The Mercedes-Benz GL Class Second Generation (X166) is a luxury crossover SUV. This vehicle is larger than its predecessor, the X164. Despite impressive technologies and improved efficiency, like any new vehicle, this German import has been known to have a few common problems.
Electrical System Glitches: GL-Class X166 models have occasional electrical system glitches within the infotainment system, bluetooth connectivity and malfunctioning sensors. Most of the time software updates or component replacements will address these issues.
Brake Problems: X166 owners have noted wobbling or vibrating sensations when braking, especially but not always at higher speeds. This issue has been known to reoccur if not addressed by an expert Mercedes-Benz technician.
HVAC System Malfunctions: Some X166 models have experienced issues with the HVAC system, including inconsistent temperatures, inoperable climate control settings and a weakened airflow.
Fuel Pump Problems: Fuel pump issues can plague the 2nd generation GL-Class and can be observed if you have a difficult time starting the engine or a loss of power while driving uphill. Most of the time it’s caused by a clogged fuel filter, faulty pressure regulator or a malfunctioning fuel pump relay. Have a qualified Mercedes-Benz repair technician take a look if you suspect you have a fuel pump issue.
Regardless of the concern you might have, consider calling a local and independent German import garage. They will already be knowledgeable about your GL class’ common, or even less common, issues. Moreover, these technicians will be able to offer affordable yet expert advice, and they will share your passion for, and be happy to help you with, your Mercedes-Benz.
Search for a local, independent Mercedes-Benz repair shop with Mercedes-Benz mechanics that have dealer-level expertise at a fraction of the expense.