What 82 owners told NHTSA about the 2021 Mercedes-benz Gle-class Hybrid

Car shut itself off in rush hour traffic. Slight Smokey smell. Dash light indicating a 48 Volt problem. Got vehicle towed to dealership.

NHTSA ODI 11471032

2021 MB GLE 450 bought in April 2021, now approximately 8000 miles with two separate events of not starting. Cannot jump. Once 48V battery system updated (3 months ago), required tow to dealer. Now again at dealer with the same issue and recommended for battery change (last time was software update). Very unsafe, happened first time in public garage at night with no start, and second time in the morning when I was trying to go to work. Based on various blogs and class action law suit against MB in NJ, seems like MB is aware of 48V battery problem, and installed a bad batch of batteries. Frustrating to purchase $80000 car and learn that it is not safe at all, with possible malfunction at any time.

NHTSA ODI 11461858

Was driving down a 2 lane road at about 55 MPH, and a warning light message appeared on the dash and said "battery no longer charging" then another message that said "coolant overheating vehicle shutting down" appeared. And the car would no longer accelerate. So I had to pull over on a busy 2 lane road and turn off my car and turn it back on, and then the car was working normally again. This could have been very bad if it was on a multi-lane highway. My safety was put at risk. I took the Vehicle in, and they said they cleaned some engine contact points and this was because the car lost contact with the engine

NHTSA ODI 11459441

It is incredibly distressing to have experienced an issue that is widely reported in this database and online forums, and remains unaddressed by MBUSA. It also seems to be an entirely preventable issue that can be fixed via a software update. The issue relates to a malfunction of the 48V battery that made the vehicle inoperatable. It happened in the midst of winter and we would be been in a dire position if our family did not come to the rescue to pick us up. The vehicle had to be towed to a dealership. Here is the dealer summary: 48v software vehicle has no power, connected jumper, battery lights on in dash, towed into shop and connected battery charger, performed quick test, found codes in 48v- B183349 and B183371 , referred to Topic # LI54.10-P-069698 remedy #2, performed guided test for B1833349, as per guided test updated 48v software and commissioned, after completion vehicle started normally, performed extended test drive and multiple short test drives to verify vehicle now operating as designed again, lights no longer present in dash.

NHTSA ODI 11446422

On two separate occasions recently, the vehicle suddenly lost all power without warning and stopped. Luckily, these incidents did not occur while driving in high speed traffic, and the car restarted once shut off. When it lost power, all warning lights came on at once. After the first incident, dealer "updated the 48v system and esp control modules and The vehicle is operating as designed." The first incident was on November 9, the second incident was on November 29.

NHTSA ODI 11442064

GLE53 would not start. The car threw an error stating 12v battery malfunction.(Impacted the 48V battery) This essentially disables the vehicle completely. This is 2021 GLE53 with less than 5000 miles. There is also an issue with the side-view mirror and wind noise.

NHTSA ODI 11441783

I was driving at full speed on the interstate (75mph) when the vehicle died completely. I had only seconds to maneuver the vehicle to the shoulder. There was no indication of a service issue with the vehicle prior to this incident. The car is/was approximately 2 weeks old, with about 500 miles of usage. Vehicle would not restart so I could attempt to get to a safer location.

NHTSA ODI 11432776

The contact owns a 2021 Mercedes-Benz GLE450. The contact stated while driving at various speeds the vehicle loss motive power. The 48V battery malfunction and coolant hot turn-off vehicle message were displayed on the instrument panel. The battery indicator warning light was illuminated. The vehicle was taken to the local dealer and diagnosed with a software issue. The contact was informed that the software needed to be updated. The vehicle was repaired however, the failure recurred. The manufacturer was not notified of the failure. The approximate failure mileage was 3,000.

NHTSA ODI 11424125

WE BOUGHT OUR VEHICLE -2021 MERCEDES-BENZ GLE 350 - ON JANUARY 12TH AND THREE DAYS LATER WE NOTICED THAT HALF OF THE MBUX DUAL SCREEN WAS BLACK AND INOPERABLE. THE CAR WAS IN SERVICE 10 DAYS. TODAY, 02,1, 2021 THE CAR STOP, THE ENGINE AND LIGHTS, CONTROL, ON HIGHWAY!!!??? I CALL POLICE TO PROTECT ME. MERCEDES DEAD. NO HAZARD LIGHTS. I STAY IN DANGEROUS TRAFFIC ONE HOUR FOR MERCEDES ROAD ASSISTANCE. I CALL FROM MY CEL PHONE, NO ENERGY IN THE CAR?! AFTER ONE HOUR THE LIGHTS OF CAR START??!!! THIS WAS AT 6:45 AM (NIGHT). AFTER 7 MINUTES, THE CAR STOP TOTALLY, BUT WITH THE LIGHTS FLASHING. FINALLY, THE ROAD ASSISTANCE FROM MERCEDES ARRIVE. NOW THE CAR IS IN SERVICE, BUT NEVER DRIVE THIS CAR. I WAS IN A VERY BIG DANGEROUS WIT MY LIFE.

NHTSA ODI 11391145