2020 Mercedes-Benz GLE 450 Vehicle speed control Problems

“I was travelling on highway with adaptive cruise control on. When near the exit, I press the off button for the cruise control. To my surprise, the car didn't slow down, and instead maintain the engine power to keep the car in set speed. I tried the other settings (off, cancel, speed down) option but nothing is responsive. Since I am on the off ramp already, I have to step on the brake (this does finally stop the cruise control) to slow down the car. …”

“Driving down the highway at 70 MPH and '48v battery malfunction' warning goes off, along with a yellow check engine light. A few seconds later a 'coolant' error message pops up and a red check engine light comes on. Car looses power completely and I'm unable to accelerate at all. Call flashes a message of 'pull over and turn the engine off'. Fortunately no one was behind me and I was able to coast safely to the side of the highway before the car stalled completely. …”

“Sudden acceleration - electrical system failures- 1) 03/21/20 complete electrical failure - all warning lights, exterior lights & brake lights stuck on, then would not start after local shopping trip-odometer 754 miles - vehicle towed to dealer - 'reprogrammed'. 2) 06/18/20 active speed control-cruise control (which reads speed limit signs and adjusts speed) was set at 50 MPH - suddenly began to accelerate to 80 MPH. Odometer 1641 miles. 3) active speed limit control often reads frontage road speed limit signs while on main highway, initiating braking. …”

“1. After coming to a stop, foot placed on the pedal to accelerate through a neighborhood security gate, the car would not accelerate despite how hard I depressed the gas pedal. After approximately 3-4 seconds the car finally accelerated. 2. When coming to a stop the vehicle has a very hard “clunk” in the transmission to stop. Vehicle was taken to the dealership but they could not replicate the problem at the time so car was given back to me with “non replicable” issues.”

“1. First message: 48v battery malfunction 2. Second message: stop the vehicle coolant is not working vehicle is overheating. 3. Lost power, I could only drive 10 miles per hour. I pulled to the side of the road and was almost rear ended by a semi truck. There are several online occurrences reporting these same messages. It is extremely dangerous when a vehicle loses all power while on a busy highway. The vehicle was inspected. Mercedes aware of a bulletin with this issue.”