2015 Mercedes-Benz CLA-Class Electrical System Problems

Mercedes no longer supports the sos ( tel-aid) system, so this system no longer works...each time you start the car, the sos inoperative warning light is on, and it blocks other safety features ( speedometer etc..). You have to reset the light each time you get in the car. Without the support of the system there is no emergency alert theft tracking ,airbag deployment sent to MB etc etc. Mercedes no longer services this feature, and this is one of the reasons we bought this car. It's a tremendous safety concern. Even though there are dealer bulletins about this, there is no fix. All these cars should be purchased back by MB. I'm uncomfortable driving a car that could be involved in a collision, and the car not notifying MB, or the police

The contact owns a 2015 Mercedes-Benz GLA250. The contact stated while driving at an undisclosed speed, the vehicle sputtered, and the check engine warning light illuminated. In addition, the collision assists warning light illuminated. The vehicle was taken to an independent mechanic where it was diagnosed with a failed PVC valve. Additionally, the transmission assist needed service due to overheating. The collision assist warning light was reset. The vehicle was repaired. The contact stated that the failure had reoccurred, and the collision assist, and the check engine warning lights illuminated again. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The contact stated that the failure occurred four times. The vehicle was repaired twice by the dealer and once by an independent mechanic. The manufacturer was not made aware of the failure. The failure mileage was approximately 44,000.

When I went to start my vehicle it did not turn on. The lights weren’t on and we had the battery and alternator checked out and they were fine.

A driver in my household was driving at normal speeds and smelled smoke in the cabin. She pulled over immediately to the nearest gas station. In that short time, there were FLAMES coming from the center console area. She ran inside to get employees with fire extinguisher. The fire was put out and police/fire department were called. The car was un-drivable, and my insurance declared it as a total loss (it would cost more to repair than the current blue book value). I had a similar problem previously with a Mercedes 2014 CLA250. That was a smaller fire, but melted the console area. I will be submitting a report for that one as well, even though it happened several years ago. After that incident we went back and forth with MB corporate and ultimately took it to dealer and ended up trading in for this one. Both fires were electrical fires from wires underneath the center console.

1) THE TRUCK OPENS FOR NO REASON WHETHER THE CAR IS PARKED OR DRIVEN WITHOUT TRUNK FEATURE BEING ACTIVATED. THIS HAPPENS WHEN DRIVING DOWN A 4 LANE HIGHWAY AT NIGHT AND DAY. 2) COLLISION PREVENTION OF LIGHT DISPLAYED & WON'T GO OFF. (SEE ATTACHED). GOOGLE INDICATES THAT THE PASSENGER AIR BAG HAS AN ISSUE.

THE COMMAND UNIT REBOOTS EVERY 2 MINUTES WITH THE CAR ON OR OFF. IT KILLS THE BATTERY. THIS IS A SAFETY ISSUE AS THE BATTERY DISCHARGES. WE HAVE SEEN DOZENS OF CUSTOMER COMPLAINTS ONLINE. MERCEDES CHARGED 157.00 AND WANTS ANOTHER 500--600 FOR DIAGNOSTICS. THE CAR HAS 52,000 MILES AND JUST WENT OUT OF WARRANTY.

WHILE THE VEHICLE IS STATIONARY, ENGINE OFF, ALL DOORS CLOSED, AND AFTER LOCKING THE DOOR USING THE SMART KEY LOCKING BUTTON OR THE KEYLESS LOCKING FUNCTION (TOUCHING THE DOOR HANDLE), ALL FOUR DOORS APPEAR TO BE LOCK (CAN VISIBLY SEE LOCK MOVE DOWN TO LOCK POSITION). HOWEVER, WITHOUT THE SMART KEY NEARBY, THE REAR DOORS CAN STILL BE OPEN.

CHECK ENGINE APPEARED ON OUR DASH BOARD AT 56,000 MILEAGE AND DIAGNOSED WITH A PROBLEM OF THE AUXILLARY ELECTRICAL OIL PUMP. THIS IS THE SECOND TIME WE HAVE CHECK ENGINE AFTER WE ARE OFF WARRANTY. I CAN ALSO SMELL GAS INSIDE THE CABIN WHEN I TURNED ON THE ENGINE

WE HAVE HAD THIS CAR ABOUT A YEAR, WE ENCOUNTER NUMEROUS OCCASION THE THE "COLLISION ASSIST PLUS" HAS ENGAGED INTERMITTENTLY W/O ANY REASONABLE OBSTACLE IN FRONT OF THE CAR WHEN IT IS IN MOTION. ABOUT A MONTH AGO, THE CAR GAVE MESSAGE "COLLISION ASSIST INOPERATIVE" AND I CAN EVEN GET THE CAR IN GEAR NOT WITH MULTIPLE RESTART. LAST WEEK I WENT OUT WITH MY WIFE AND THE CAR STOP ON THE BUSY STREET ON THE STOP AND GO TRAFFIC AND THE CAR DID "AUTO START STOP" WAS UNABLE TO RESTART AND IT DISENGAGE THE TRANSMISSION AND I HAD TO RESTART THE CAR MANUALLY AND REENGAGE THE TRANSMISSION. I HAD FILE COMPLAINT ABOUT INTERMITTENT "COLLISION ASSIST " CONDITION TO THE DEALER (HOUSE OF IMPORT, BUANA PARK, CA), THE SERVICE ADVISER SAID IT IS NORMAL FOR THE COLLISION ASSIST ACTING UP SOME TIME. I BELIEVE THERE ARE SOME SOFTWARE GREMLIN OR SOME OTHER ECU ISSUE NEED TO BE ADDRESS. IT S A SAFETY CONCERN TO KEEP DRIVING THIS CAN W/O ANY SOLUTION, I DID CONTACTED MBZ USA, THEY OFFER NO HELP NOR SOLUTION AT ALL.

I STARTED THE CAR AND I GOT A MESSAGE STATING THE RIGHT FRONT AIR BAG MALFUNCTIONED. THERE IS A SHORT. I TOOK THE CAR IN FOR REPAIR, THERE HAVE BEEN SEVERAL RECALLS ON THIS MODEL FOR THE AIR BAG, MINE IS NOT INCLUDED. THE AIR BAG HAS SHORTED OUT. THIS IS A HUGE SAFETY ISSUE.

WE PURCHASED THIS CAR AS CERTIFY PRE-OWNED; IT HAS ENCOUNTER NUMEROUS ISSUES. ONE ISSUE I DID NOT MENTION ON THE PREVIOUS COMPLAINT IS THE ISSUE WITH "KEY LESS" REMOTE. THE CAR SOME TIME DOES NOT DETECT KEY LESS REMOTE DURING DRIVING SAYING "KEY NOT DETECTED" EVEN AFTER REPLACING BATTERY AND VISITED DEALER (HOUSE OF IMPORT) FOR SOFTWARE UPDATE. IT HAS BEEN SEVERAL OCCASION CAR FAIL TO RESTART WAITING ON THE TRAFFIC LIGHT AFTER SEVERAL ATTEMPT TO RESTART THE CAR IT KEPT SAYING KEY NOT DETECTED (THIS CAK HAS AUTO START/STOP FEATURE) THAT MAKE IT VERY DANGEROUS POSSIBLE CAN BE REAR ENDED BY OTHER CAR.

WHEN VEHICLE IS PARKED IN A SPACE UNDER POWER LINES THE VEHICLE LOCKING SYSTEM DEACTIVATES AND THE VEHICLE WILL NOT LOCK. THE VEHICLE MUST BE MOVED TO A SPACE WHERE THERE NO POWER LINES ABOVE THE VEHICLE.

I BOUGHT MERCEDES CLA 2015 ON JAN 2015 AND I DROVE THE VEHICLE WHERE MY AUDIO SYSTEM USED TO REBOOT TIME TO TIME ONCE IN A WHILE BUT IT USED TO COME UP. SO I DID NOT MENTION AND TAKE IT TO DEALER THAT TIME BUT RECENTLY, AFTER DRIVING 53K MILE, IT COMPLETELY STOPPED WORKING AND ONLY REBOOTING ITSELF. LATER I FOUND OUT THERE WAS RECALL ABOUT 2015/2016 CLA AUDIO RECALL "REFERENCE TSB NO. 2015110001". SO I TOOK IT TO DEALER "MERCEDES BENZ HOUSTON GREENWAY" AND THEY SAID THEY CAN NOT UPDATE UNLESS THEY CHANGE CONTROL UNIT. I ALSO CALLED MERCEDES BENZ CUSTOMER SERVICE BUT THEY ALSO SAME THING. SO I PAID 50% COST WHICH IS $1457. THIS LOOKS UNFAIR TO ME BECAUSE IT HAD ISSUE AND IT HAS RECALL TOO.I NEED PROPER HELP HERE AS THIS DOES NOT LOOK RIGHT TO ME AND I AM STARTING MY VOICE HERE TO RESOLVE THIS ISSUE.

TL* THE CONTACT OWNS A 2015 MERCEDES-BENZ CLA45 AMG. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 17V114000 (ELECTRICAL SYSTEM, ENGINE AND ENGINE COOLING). THE PART TO DO THE REPAIR WAS UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE DEALER WAS NOT CONTACTED. THE MANUFACTURER WAS CONTACTED, BUT WAS NOT ABLE TO CONFIRM WHEN THE PARTS WERE TO BECOME AVAILABLE. THE MANUFACTURER ALSO DECLINED TO BUY BACK THE VEHICLE. THE CONTACT HAD NOT EXPERIENCED A FAILURE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE.

VEHICLE ON SIDE STREET NEAR HOME...SUDDENLY CHUGS, AND SLOWS TO A CRAWL WILL NOT ACCELERATE...ALL LIGHTS COME ON DASHBOARD..ALSO ENGINE LIGHT... TOWED TO DEALERSHIP IN DAYTONA BEACH, FL...AFTER 3 WKS SERVICE DEPT CALLED TO SAY IT WAS FIXED... WIRING HARNESS AND A ME CONTROL UNIT REPLACED. 3 WKS LATER ON 5/10/16 SAME INCIDENT HAPPENED...LUCKILY IT WAS ON SIDE STREET SO WAS NO ACCIDENT OR DAMAGE....THIS APPEARS TO BE A RECURRING PROBLEM W/MERCEDES BENZ VEHICLES.... SERVICE DEPT CLAIMS FOUND FIX ONLINE..? RESET SOME KIND OF "PINS".....THIS CAR IS NOT SAFE IN MY OPINION....