Drive unit failed. Manufacturer's Faulty coolant seal. Coolant leaked into engine, Dashboard displayed "Workshop" warning about 2-3 times before breakdown.
- NHTSA ID
- 11613247
- Incident
- Aug 19, 2024
Reports submitted to NHTSA by owners and drivers, shown in full
Data refreshed
Our database holds 5 NHTSA owner-reported complaints for the 2016 Mercedes-Benz B-Class Electric. Each one is a report filed by an owner or driver and published by NHTSA without most of them being verified. A complaint is not a confirmed defect, not a recall and not a manufacturer bulletin. Narratives are shown exactly as filed.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Showing 1–5 of 5
Drive unit failed. Manufacturer's Faulty coolant seal. Coolant leaked into engine, Dashboard displayed "Workshop" warning about 2-3 times before breakdown.
On 4/19/22 while driving my Mercedes B250e, I received a 'check coolant level' warning message, followed closely by 'without starting engine again, consult workshop' and then 'stop, switch engine off'. All messages appeared in less than 30 minutes time, and then my engine completely shut off while I was pulling into a parking lot. Prior to this date, there were no warning signs of the issue. The issue was diagnosed by the Mercedes Atlanta South dealership as a catastrophic electric drive unit failure caused by a coolant leak due to a faulty rotor seal. I was quoted a price of $12K-$20K to replace the EDU. I declined the service while trying to get assistance from Mercedes customer care, so the vehicle is still in an inoperable condition and available for inspection. This issue has happened to countless B250e drivers, and it is completely unsafe to allow these cars to continue driving without recall since the engine can shut down while driving, and become completely inoperable, with little to no warning. This is a known issue to Mercedes - see attached invoice which references 'SEVERAL PTSS CASES'.
2021-11-29, 10a PST. The "check coolant level" warning appeared while I was driving westbound on the 210 freeway in Glendale, California. As I took the exit to La Crescenta Ave, another alert appeared that there was a sudden "malfunction: visit workshop" warning. As I was trying to turn off on a side street to pull over (with my 4 year old in the back seat), the car stopped in the middle of the road and would not start back up again. Some good citizens helped me push my car up the hill to the side street where I could safely park the vehicle. There are other accounts of this issue occurring with this vehicle, apparently the coolant leaks into the engine and the electric drive motor needs to be replaced. The repair cost is prohibitive ($17,000) and my car is 4,000 miles out of warranty.
2016 MERCEDES-BENZ B CLASS. CONSUMER WRITES IN REGARDS TO INSUFFICIENT ELECTRICAL GROUNDING SAFETY RECALL. *LD THE CONSUMER STATED THE RECALL REPAIR EXCEEDED A REASONABLE AMOUNT OF TIME. *JS
TL* THE CONTACT OWNS A 2016 MERCEDES BENZ B-CLASS ELECTRIC EQUIPPED WITH HANKOOK TIRES, TIRE LINE: EVENT EMT, TIRE SIZE: 225/55/CR1797W, AND DOT NUMBER: BCKC1AH2116. THE CONTACT STATED THAT ALL FOUR TIRES ABNORMALLY PREMATURELY WORE OUT. ALL FOUR TIRES WERE REPLACED ON THREE OCCASIONS. THE VEHICLE WAS TAKEN TO A DEALER BUT THE FAILURE WAS UNABLE TO BE DETERMINED. THE TIRES WERE REPLACEMENT TIRES. THE FAILURE MILEAGE OF THE VEHICLE AND TIRES WERE 40,306.
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
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