2015 MERCEDES BENZ B-CLASS ELECTRIC Fuel/propulsion System Problems

The electric motor was leaking coolant and needs to be replaced. I have read countless accounts that this is a known issue with this car.

The main electric drive motor will start leaking coolant which then damages the motor and even electronics. Well known issue and makes the vehicle unsafe and isn't a matter of "if" but "when" the seals will go bad and this is on our car that has less than 40k miles on the odometer.

MY B-CLASS ELECTRIC HAD A SUDDEN LOSS OF POWER. HERE'S THE DETAILS: LEFT THE HOUSE IN SAN DIEGO AT 7:00 AM. OUTSIDE TEMPERATURE ABOUT 75+DEGREES. ABOUT 1 MILE FROM THE START, I BRAKED SLIGHTLY TO MAINTAIN SPEED OF ABOUT 25 MPH, COASTED TOWARDS AND UPHILL, PUT MY FOOT ON THE ACCELERATOR TO MAINTAIN SPEED AND THERE WAS NO POWER-JUST COASTING. THERE WAS NO UNUSUAL SOUND AND NO WARNING DISPLAYED. THE CAR APPEARED NORMAL EXCEPT THE GUAGE WAS SHOWING FULL REGENERATIVE BRAKING WHILE THE CAR WAS COASTING. TRANSMISSION WAS IN D-AUTO. POWER STEERING WORKED, AC AND RADIO WERE STILL ON. I BROUGHT IT TO A STOP. PUSHED THE BUTTON TO TURN IT OFF. AT THAT TIME ALL THE LIGHTS ON THE DASH LIT UP. I PUSHED IT AGAIN AND THE CAR WAS BACK TO NORMAL WITH THE INDICATOR SHOWING ZERO BETWEEN REGENERATION AND DISCHARGE. I FINISHED THE DRIVE WITHOUT FURTHER INCIDENT. MILEAGE: 1620 MILES PURCHASED: JUNE 2015 MFG DATE: 4/15 TOOK THE CAR TO THE DEALER TWO HOURS LATER AND TOLD THEM ABOUT THE PROBLEM AND THAT THE FORUM SAYS THERE IS A CODE UPDATE AVAILABLE. WAITED THERE FOR 3 HOURS. THEIR PAPER WORK SAYS: 1639 541011, 540991, 540992. PROGRAMMED POWER TRAIN CONTROL UNIT. PERFORMED SHORT TEST; NO RELEVANT FAULT CODES. CHECKED POWER TRAIN CONTROL UNIT FOR SOFTWARE UPDATES. UPDATE WAS AVAILABLE. PROGRAMMED AND CODED POWER TRAIN CONTROL UNIT. COMPLETE.

Mileage: 1,600

DRIVING ON THE FREEWAY AT 65MPH, EXPERIENCED COMPLETE AND SUDDEN LOSS OF DRIVE/POWER. CAR CHARGE WAS AROUND 1/2 FULL. HAD TO PULL TO THE SHOULDER AS THE CAR ROLLED TO A COMPLETE STOP. FINDING LOTS OF OTHER REPORTS ONLINE, DEALER HAS BEEN UNABLE TO DETERMINE THE ROOT CAUSE AFTER 1 WEEK. DEALER REPORTED OTHER SIMILAR INCIDENTS FROM OTHER DRIVERS.

Mileage: 1,280

I WAS DRIVING ON THE 91 FREEWAY IN ANAHEIM CA WHEN MY BRAND NEW (APPROXIMATELY 1000 MILES ON THE ODOMETER) 2015 MB ALL ELECTRIC AUTOMOBILE BEGAN TO DECELERATE. MY FOOT WAS ON THE ACCELERATOR AS I LOST ALL POWER TO THE ENGINE. THE BATTERY WAS FULLY CHARGED. THE RADIO AND ALL OF THE ELECTRONIC INTERIOR FEATURES WERE INTACT. I WAS IN THE 3RD LANE OF TRAFFIC (OUT OF 5). LUCKILY THE TRAFFIC WAS LIGHT AS I PULLED OVER TO THE SIDE OF THE FREEWAY AND THE CAR CAME TO A COMPLETE STOP. I WAS QUITE UNNERVED BY THE INCIDENT BUT THE CAR STARTED UP AND I CONTINUED MY COMMUTE TO WORK UNEVENTFULLY. I TOOK MY VEHICLE TO THE MERCEDES DEALERSHIP AND THEY EVALUATED THE CAR. THEY COULD NOT REPLICATE THE EVENT AND COULD NOT FIND AN ANOMALY IN THE ON BOARD COMPUTERS. I PRESENTED TESTIMONY FROM THIS VERY WEBSITE DISCLOSING 7 OTHER RECENT SIMILAR EVENTS IN THIS MODEL CAR. I ADVISED THE DEALERSHIP THAT I WAS NOT TAKING POSSESSION OF THE AUTO UNLESS SOMETHING WAS DONE. THEY PRESENTED THE INFORMATION TO MERCEDES BENZ/TESLA TECHNICAL SUPPORT. THE GATEWAY POWERTRAIN CONTROL UNIT WAS REPLACED. I EXPRESSED MY CONCERN TO THE MB DEALERSHIP THAT THIS MAYBE A SYSTEMIC PROBLEM, GIVEN THE NUMBER OF COMPLAINTS IN SUCH A SHORT PERIOD OF TIME. THE DEALERSHIP REPRESENTATIVE EXPRESSED SYMPATHY WITH MY SITUATION BUT DECLARED THAT THIS IS SOMETHING WE SHOULD TAKE UP WITH DAIMLER-BENZ. THE DEALERSHIP IS A SEPARATE ENTITY WHICH ONLY BUYS/SELLS AND PROVIDES MAINTENANCE FOR MB AUTOMOBILES. I EXPRESSED THAT THIS DEFECT HAS ME CONCERNED EVERY TIME I ENTER A FREEWAY. THE SERVICE MANAGER COULD NOT REASSURE ME THAT THIS WILL NOT HAPPEN AGAIN. I HOPE IT DOES NOT TAKE FATALITIES BEFORE THERE IS A RECALL.

Mileage: 1,000

THERE HAS BEEN TWO INCIDENT, IN WHICH I AM DRIVING THE CAR AND THE ACCELERATOR DOES NOT RESPOND, REQUIRING ME TO MAKE AN EMERGENCY LANE CHANGE TO GET OFF THE ROAD, THESE SITUATION HAVE BEEN VERY FRIGHTENING AND I FEAR FOR MY LIFE DRIVING SUCH A CAR. THE FIRST SITUATION OCCURRED AUGUST 2015 , WHILE TRAVELING ON A HIGH WAY AT 65MPH. THE CAR STOP ACCELERATED AND I LUCKLY MADE AN EMERGENCY LANE CHANGE WITHOUT HARM MYSELF, FAMILY CAR OR ANYONE ELSE. I IMMEDIATELY CONTACTED SOS ON MY CAR AND WAS TOLD THE CAR WAS SAFE TO DRIVE, AFTER I RESTARTED IT. I TOOK MY CAR IN FOR A REPAIR, THEY DID A SOFTWARE UPDATE AN PROMISED IT WONT HAPPEN AGAIN. OCCURRED AT 1500 MILES, ROUGHLY 2 MONTH AFTER PURCHASING THE CAR. 1500 MILES LATER, ABOUT 7 WEEKS, IT HAPPENS AGAIN. THIS TIME ON A SMALL ROAD, I ALSO HAVE VIDEO OF THE, CAR WHERE I AM NOT ABLE TO PUT THE CAR INTO DRIVE AND IT IS STUCK IN NEUTRAL BUT CAN GO INTO REVERSE/DRIVE. THE REGENERATION WAS AT 100% AND ALL WARNING LIGHT ON, SAME THING AS FIRST TIME. NOTE I STILL HAVE THE VIDEO TOOK THE CAR IN, DEMANDED THE CAR BE REPAIRED. DID SOME RESEARCH DETERMINE OTHER CAR HAVE THE SAME PROBLEM. EVEN THE RAV4 EV HAD A SIMILAR PROBLEM, COMMONALITY BETWEEN THE B-CLASS AND RAV4 IS THE TESLA BATTERY AND DRIVE TRAIN. I BELIEVE THIS HAS HAPPEN TO OTHER PEOPLES AND THIS IS DISASTER WAITING TO HAPPEN, THIS CAR SHOULD BE RECALLED FOR ALL OWNERS AND REPAIRED

Mileage: 3,000

I WAS DRIVING AT 55 MPH ON THE FREEWAY WITH BOTH HANDS ON THE WHEEL WHEN ALL OF A SUDDEN I LOST POWER TO THE ACCELERATOR PEDAL. NO MECHANICAL PROBLEM WAS INDICATED ON THE DASH: THE CAR WAS 'READY' AND WAS IN 'D' YET I HAD NO POWER WHATSOEVER TO THE ACCELERATOR PEDAL. I COULD NOT PULL OVER TO GET OUT OF TROUBLE BECAUSE I WAS SURROUNDED BY FAST MOVING TRAFFIC AND HAD NO POWER. I COULD NOT BRAKE TO TRY TO RESTART THE CAR WITHOUT BEING REAR ENDED BY THE CONSIDERABLE TRAFFIC BEHIND ME ON THE FREEWAY. MY ONLY OPTION WAS TO CONTINUE TO COAST FROM MY INITIAL SPEED WITH THE HAZARD LIGHTS ON EVEN THOUGH I WAS AT HIGH RISK OF BEING STRUCK BY ANOTHER DRIVER. ONCE STOPPED IN THE FAST LANE OF THE FREEWAY, IT TOOK 2 OR 3 ATTEMPTS AT SWITCHING THE POWER ON AND OFF BEFORE THE CAR WAS ABLE TO MOVE AGAIN. THE FAILURE SYMPTOMS APPEAR SIMILAR TO THE RAV4 EV THAT HAS THE SAME POWER COMPONENTS SUPPLIED BY TESLA, AND SINCE MARCH/APRIL 2015 IS THE SUBJECT OF A RECALL NOTICE FOR THIS POWER LOSS ISSUE. WE PURCHASED THIS NEW VEHICLE FROM AN AUTHORIZED MERCEDES DEALER ON JUNE 30, 2015, THERE WAS NO DISCLOSURE OF THIS ISSUE. THE MERCEDES ELECTRIC VEHICLE FAILURE PUT ME AND MY PASSENGER IN A POTENTIALLY FATAL SITUATION.

Mileage: 1,626

SUDDEN LOSS OF POWER WHILE DRIVING ON A HIGHWAY AT 65-70MPH. NO INDICATION OF ANY PROBLEM ON DASH BOARD, EXCEPT AN INDICATION THAT IT WAS AT MAXIMUM REGENERATION. GEAR SELECTION INDICATOR DISPLAYED THAT THE CAR WAS IN DRIVE, NOT IN NEUTRAL. NO RESPONSE FROM THROTTLE PEDAL PRESSING. SLOWLY DRIFTED ACROSS MULTIPLE LANES OF HIGHWAY UNTIL I REACHED THE SHOULDER AND CAME TO A STOP. TURNED CAR OFF AND THEN BACK ON, AFTER WHICH THE CAR BEHAVED NORMALLY AGAIN.

Mileage: 2,380

WHILE DRIVING 35 MPH ON TIMED LIGHT RUSH HOUR TRAFFIC ROAD, CAR LOST ACCELERATION CAPABILITY. INSTRUMENTATION PANEL DISPLAYED NORMALLY. CAR DID NOT RESPOND TO SWITCH TO SPORT MODE IN ATTEMPT TO GET MORE RESPONSE. DID NOT STALL COMPLETELY BUT NO ACCELERATION POSSIBLE. NORMAL AFTER TURNED OFF AND RE-START.

Mileage: 55

MY 2015 MERCEDES BENZ B CLASS ELECTRIC DRIVE LOST POWER DURING MY EVENING COMMUTE TODAY LEAVING ME STALLED IN TRAFFIC. I WAS NOT ABLE TO MAKE IT ACROSS ALL 5 LANES OF A BUSY FREEWAY TO THE SHOULDER BEFORE COMING TO A COMPLETE STOP HALFWAY BETWEEN TWO LANES (ONE OF WHICH WAS A BUSY MERGE LANE FROM SFO AIRPORT). I TRIED TO RESTART IT (KEYLESS) A COUPLE OF TIMES WITHOUT SUCCESS- NO MESSAGES ON DASH, REST OF ELECTRONICS (RADIO ETC) STILL WORKING FINE. I DID NOTICE THAT THE GAUGE DROPPED DOWN TO FULL "CHARGING" AS IF THE REGENERATIVE SYSTEM WERE FULLY ENGAGED BUT NOT ALL THE WAY TO OFF WHICH SEEMED ODD. I HIT THE SOS/ASSISTANCE BUTTON TO ASK THEM TO SEND CHP SINCE I WAS BLOCKING TRAFFIC AND GENUINELY FEARED FOR MY SAFETY. WHILE ON THE PHONE WITH THEM SOME GUYS STOPPED AND TRIED TO PUSH ME TO THE SHOULDER SINCE I WAS ONLY 3/4 OF A LANE AWAY BUT THE CAR WOULD NOT MOVE AT ALL. SHORTLY AFTER THEY GAVE UP, I RANDOMLY TRIED TO START THE CAR AGAIN AND IT DID START. I WAS ABLE TO PULL TO THE SHOULDER AND CALL OFF CHP. AFTER COLLECTING MY NERVES A BIT I HEADED FOR THE NEXT OFF RAMP AND MADE IT THE REST OF THE WAY HOME ON SURFACE STREETS WITHOUT INCIDENT. I WILL BE TAKING THE CAR TO THE DEALER IN THE MORNING.

Mileage: 2,100