Engine And Engine Cooling Related Problems of the 2015 Mercedes Benz GL550

Table 1 shows one common engine and engine cooling related problems of the 2015 Mercedes Benz GL550.

Table 1. Engine And Engine Cooling related problems of Mercedes Benz GL550

Problem Category Number of Problems
Engine And Engine Cooling problems
5

Engine And Engine Cooling problem #1

See attached document for complaint.

Engine And Engine Cooling problem #2

See attached document for complaint.

Engine And Engine Cooling problem #3

My 2015 Gl550 has 90k miles on it and is city driven, on 09/11/2023 when I was trying to pull out onto a main rd my SUV hesitated and the check engine light came on, luckily traffic wasn’t heavy at the time so I wasn’t in any accidents. I called and was able to get my SUV into my local mercedes dealership for an inspection. When the SUV was dropped off the check engine light had gone off but when the service center pulled up the codes it showed both turbos were bad and have to be replaced. This isn’t something that should happen to a vehicle that is regularly serviced only at mercedes service centers, isn’t 10years old yet, never wrecked, and has less then 100k miles on it. If this had happened with heavy traffic or any other situation it could have caused a serious wreck. My SUV is currently at the dealership having both turbochargers replaced at a cost of $12,000 out of pocket. I feel that mercedes needs to look into the turbochargers used in their vehicles.

Engine And Engine Cooling problem #4

As I was driving down the freeway the whole vehicle caught on fire and we got out of the car and within 2-3 minutes while car was burned to ashes.

Engine And Engine Cooling problem #5

Upon receipt of vehicle, when the weather was nice, a rattle in the engine compartment appeared to take place intermittently. Upon diagnosis by a dealership, intermittent was confirmed to take place on a cold start, and not intermittently. Upon further research, it was found the rattle is related to a manufacturer's defect with the timing chain tensioner(s) and their interaction with the valves. My safety was put at risk substantially. I live in the cold upper midwest. Every start of the vehicle is a cold start, and if I risk damaging my engine at any given hour, during the dead of winter, with little to no available funds, I am at risk of hypothermia, starvation, even death. The problem, as noted in paragraph one has been reproduced by a dealer. The vehicle has not been inspected by the manufacturer in full, but the issue is known by daimler since 2013 for certain. No warning lamps or messages are associated with the issue. The only symptom is the rattle in the engine compartment, and when appropriate tension with the timing chain is obtained, the rattle immediately goes away.


Engine And Engine Cooling related problems in other Mercedes Benz GL550 model year vehicles:



GL550 Service Bulletins
GL550 Defect Investigations