NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
83 reportsMileage unknown · Feb 7, 2012
Seats
I HAD SEAT HEAT ON, I WAS DRIVING. ALL OF SUDDEN I BEGAN SMELLED BURNING,I FOUGHT IT WAS OUTSIDE AND I OPENED A WINDOW, BUT THEN I FELT A HEAT IN MY LEFT LOWER BACK. I PULLED OVER MY CAR. I SAW ON LEFT SIDE OF THE DRIVER SEAT A WHOLE AND FIRE WAS STARTING, I HIT FEW TIMES WITH MY HANDS AND PUT OUT THE GLOWING FIRE. I WAS IN PANI…
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I HAD SEAT HEAT ON, I WAS DRIVING. ALL OF SUDDEN I BEGAN SMELLED BURNING,I FOUGHT IT WAS OUTSIDE AND I OPENED A WINDOW, BUT THEN I FELT A HEAT IN MY LEFT LOWER BACK. I PULLED OVER MY CAR. I SAW ON LEFT SIDE OF THE DRIVER SEAT A WHOLE AND FIRE WAS STARTING, I HIT FEW TIMES WITH MY HANDS AND PUT OUT THE GLOWING FIRE. I WAS IN PANIC WHEN IT HAPPENED.I NEVER THINK IT CAN HAPPEN WITH MERCEDES BENZ CAR. I LOST MY TRUST AND I AM AFRAID IT MAY HAPPEN AGAIN. *TR
NHTSA ODI #10446992
75,000 miles · Jan 12, 2012
SeatsFire
TL* THE CONTACT OWNS A 2007 MERCEDES ML350. WHILE DRIVING WITH THE HEATED SEAT FUNCTION ACTIVATED, THE CONTACT SMELLED SOMETHING BURNING WHEN SHE NOTICED THAT HER BACK HAD BECOME EXCESSIVELY HOT. THE HEATED SEAT FUNCTION BURNED A HOLE IN HER SHIRT FROM THE EXCESSIVE HEAT. SHE LET THE VEHICLE COOL DOWN BEFORE SHE CONTINUED TO …
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TL* THE CONTACT OWNS A 2007 MERCEDES ML350. WHILE DRIVING WITH THE HEATED SEAT FUNCTION ACTIVATED, THE CONTACT SMELLED SOMETHING BURNING WHEN SHE NOTICED THAT HER BACK HAD BECOME EXCESSIVELY HOT. THE HEATED SEAT FUNCTION BURNED A HOLE IN HER SHIRT FROM THE EXCESSIVE HEAT. SHE LET THE VEHICLE COOL DOWN BEFORE SHE CONTINUED TO DRIVE. THE DEALER ADVISED THE CONTACT THAT THE SEAT WARMER MALFUNCTIONED. THE MANUFACTURER WAS NOTIFIED ON THE CONTACT'S BEHALF. THE VEHICLE WAS NOT REPAIRED. THE CURRENT AND THE FAILURE MILEAGES WERE 75,000. THE VIN WAS UNAVAILABLE.
NHTSA ODI #10443603
45,000 miles · Jan 9, 2012
SeatsFireInjury
TL* THE CONTACT OWNS A 2007 MERCEDES BENZ ML350. THE CONTACT WAS DRIVING APPROXIMATELY 35 MPH WITH THE DRIVER'S SIDE SEAT WARMER ACTIVATED WHEN THE TEMPERATURES BECAME EXTREMELY HOT. THE DEFECT RESULTED IN A BURN HOLE IN THE CUSHION AND THE CONTACT'S CLOTHING. THE CONTACT SUSTAINED MINOR BURNS TO THE BACK. THE VEHICLE WAS TAKEN…
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TL* THE CONTACT OWNS A 2007 MERCEDES BENZ ML350. THE CONTACT WAS DRIVING APPROXIMATELY 35 MPH WITH THE DRIVER'S SIDE SEAT WARMER ACTIVATED WHEN THE TEMPERATURES BECAME EXTREMELY HOT. THE DEFECT RESULTED IN A BURN HOLE IN THE CUSHION AND THE CONTACT'S CLOTHING. THE CONTACT SUSTAINED MINOR BURNS TO THE BACK. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER WHO INFORMED THE CONTACT THAT THE SEAT BACK WARMER WAS FAULTY AND PLANNED TO PERFORM FURTHER INVESTIGATIONS TO DETERMINE THE CAUSE OF FAILURE. THE MANUFACTURER WAS NOTIFIED OF THE MALFUNCTION. THE CONTACT REFERENCED A CONCURRENT INVESTIGATION UNDER NHTSA ACTION NUMBER: PE08030 (SEATS: FRONT ASSEMBLY: SEAT HEATER/COOLER) HOWEVER, THE INVESTIGATION WAS CLOSED SEPTEMBER 9, 2008. THE APPROXIMATE FAILURE MILEAGE WAS 45,000.
NHTSA ODI #10442892
68,300 miles · Dec 16, 2011
Power Train
MY ML350 HAS A DEFECTIVE TRANSMISSION VALVE BODY. THE CAR HAS BEEN AT A MERCEDES BENZ DEALER AWAITING THE PART FOR OVER A MONTH. THE PART IS UNAVAILABLE DUE TO THE NUMBER OF DEFECTIVE VALVE BODIES. THE PROBLEM IS GLOBAL. PLEASE READ THE LINK. HTTP://MBWORLD.ORG/FORUMS/M-CLASS-W164/427254-2007-ML350-BEING-HELD-HOSTAGE-MB-C…
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MY ML350 HAS A DEFECTIVE TRANSMISSION VALVE BODY. THE CAR HAS BEEN AT A MERCEDES BENZ DEALER AWAITING THE PART FOR OVER A MONTH. THE PART IS UNAVAILABLE DUE TO THE NUMBER OF DEFECTIVE VALVE BODIES. THE PROBLEM IS GLOBAL. PLEASE READ THE LINK. HTTP://MBWORLD.ORG/FORUMS/M-CLASS-W164/427254-2007-ML350-BEING-HELD-HOSTAGE-MB-CORPORATE.HTML#POST4964336. *TR
NHTSA ODI #10440204
54,000 miles · Nov 1, 2011
Electrical SystemEngine And Engine CoolingSteering
ENGINE LIGHT CAME ON . TAKE TO REPAIR SHOP,CRANK SENSOR BAD,CHANGED CRANK SENSOR, LIGHT CAME ON BACK,O2 SENSOR BAD, CHANGED O2 SENSOR,LIGHT CAME BACK ON,FINALLY SAID WORN SPRACKETT IN ENGINE SENDING FALSE READING. STEERING PUMP WENT BAD AT 59000. AC PUMP PULLEY BROKE OFF AT 54,000 MILES. AC/HEAT COMES ON BY ITSELF, EVEN WHEN VE…
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ENGINE LIGHT CAME ON . TAKE TO REPAIR SHOP,CRANK SENSOR BAD,CHANGED CRANK SENSOR, LIGHT CAME ON BACK,O2 SENSOR BAD, CHANGED O2 SENSOR,LIGHT CAME BACK ON,FINALLY SAID WORN SPRACKETT IN ENGINE SENDING FALSE READING. STEERING PUMP WENT BAD AT 59000. AC PUMP PULLEY BROKE OFF AT 54,000 MILES. AC/HEAT COMES ON BY ITSELF, EVEN WHEN VEHICLE IS TURN OFF. *TR
NHTSA ODI #10433837
50,000 miles · Oct 19, 2011
SeatsFire
TL* THE CONTACT OWNS A 2007 MERCEDES BENZ ML350. THE CONTACT STATED THAT THE FRONT DRIVER SIDE SEAT HEATER BEGAN SMOKING AND BURNED THROUGH THE LEATHER SEAT. THERE WAS NO PERSONAL INJURY. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER FOR DIAGNOSIS. THE MANUFACTURER WAS NOT MADE AWARE OF THE PROBLEM. THE APPROXIMATE FAILURE MILEA…
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TL* THE CONTACT OWNS A 2007 MERCEDES BENZ ML350. THE CONTACT STATED THAT THE FRONT DRIVER SIDE SEAT HEATER BEGAN SMOKING AND BURNED THROUGH THE LEATHER SEAT. THERE WAS NO PERSONAL INJURY. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER FOR DIAGNOSIS. THE MANUFACTURER WAS NOT MADE AWARE OF THE PROBLEM. THE APPROXIMATE FAILURE MILEAGE WAS 50,000.
NHTSA ODI #10430829
36,900 miles · Oct 5, 2011
EquipmentStructure
DEFECT/ MECHANICAL FAILURE OF FRONT PASSENGER JACK MOUNT. I HAD JACKED UP THE FRONT PASSENGER SIDE OF MY 2007 ML350. BOTH BACK WHEELS WERE BLOCKED WITH AUTOMOTIVE WHEEL BLOCKS. THE PARKING BRAKE WAS ENGAGED, AND THE VEHICLE WAS IN PARK WITH THE MOTOR OFF. THE VEHICLE WAS PARKED ON MY CEMENT DRIVEWAY. I CAREFULLY PLACE THE JAC…
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DEFECT/ MECHANICAL FAILURE OF FRONT PASSENGER JACK MOUNT. I HAD JACKED UP THE FRONT PASSENGER SIDE OF MY 2007 ML350. BOTH BACK WHEELS WERE BLOCKED WITH AUTOMOTIVE WHEEL BLOCKS. THE PARKING BRAKE WAS ENGAGED, AND THE VEHICLE WAS IN PARK WITH THE MOTOR OFF. THE VEHICLE WAS PARKED ON MY CEMENT DRIVEWAY. I CAREFULLY PLACE THE JACK TO ENSURE IT ENGAGED INTO THE JACK MOUNT AND THAT THE BASE OF THE JACK WAS SECURE AND STABLE ON THE CEMENT. I LOOSENED THE LUG NUTS PRIOR TO JACKING THE CAR. AFTER REMOVING THE WHEEL, I ROLLED THE WHEEL OUT OF THE WAY AND WENT TO GET A JACK STAND FROM THE OPPOSITE SIDE OF THE VEHICLE. MOMENTS LATER, THE VEHICLE FELL. THE JACK MOUNT HAD FAILED AND THE EXTENDED JACK DAMAGED THE FRONT FENDER, JACK MOUNT, AND UNDERSIDE OF THE VEHICLE. I BELIEVE I TOOK ALL REASONABLE PRECAUTIONS IN JACKING THE CAR AND I AM VERY SURPRISED AND CONCERNED THAT THIS OCCURRED. I COULD HAVE BEEN SERIOUSLY INJURED. THESE JACKS ARE TYPICALLY FOR USE UNDER MUCH LESS IDEAL CONDITIONS. I HAVE CONTACTED MERCEDES BENZ HEAD OFFICE IN WRITING SINCE THE SERVICE MANAGER AT A LOCAL DEALER SUGGESTED IT WAS NOT MB FAULT. I ALSO WROTE THEM VIA THEIR ONLINE EMAIL SUBMISSION FORM ON THE CORPORATE WEBSITE - THEY HAVE NOT RESPONDED. *TR
NHTSA ODI #10428840
48,880 miles · Sep 18, 2011
Power Train
AS I WAS ATTEMPTING A SHARP LEFT TURN THE CAR SHIFTED FROM D TO D1. TO RECOVER I PLACED THE TRANSMISSION IN N THEN BACK TO D, WHILE MOVING. I CONTINUE WITH NO FURTHER PROBLEMS. THIS WAS NOT THE FIRST TIME SINCE IT HAS HAPPENED 3-5 TIMES SINCE I BOUGHT THE CAR IN JUNE 2011 WITH 43,616 MILES. *TT
NHTSA ODI #10425949
55,905 miles · Jul 6, 2011
Power TrainCrash
MINOR ACCIDENT IN LA, CAR TAKEN TO M-B OF CALABASAS THEY RECOMMENDED TRANSMISSION SERVICE. 12 DAYS LATER, CAR WAS PARKED, PUT IN PARK, ENGINE TURNED OFF, OWNER/PASSENGER IN CAR, DRIVER LEFT VEHICLE. CAR STARTED ROLLING BACKWARDS, HIT A SOFT SPOT IN GRAVEL, ROLLED OVER TWICE DOWN STEEP EMBANKMENT, STOPPED AGAINST A TREE. PASS…
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MINOR ACCIDENT IN LA, CAR TAKEN TO M-B OF CALABASAS THEY RECOMMENDED TRANSMISSION SERVICE. 12 DAYS LATER, CAR WAS PARKED, PUT IN PARK, ENGINE TURNED OFF, OWNER/PASSENGER IN CAR, DRIVER LEFT VEHICLE. CAR STARTED ROLLING BACKWARDS, HIT A SOFT SPOT IN GRAVEL, ROLLED OVER TWICE DOWN STEEP EMBANKMENT, STOPPED AGAINST A TREE. PASSENGER NOTICED CAR WAS IN PARK, UNBUCKLED HER SEAT BELT TO ENGAGE EMERGENCY BRAKE, TOO LATE. RIGHT HAND, SHOULDER AND BACK INJURED. CAR TOWED TO M-B OF WILSONVILLE. THEY SAID IT WAS TOTALED. REGIONAL MANAGER SAW CAR. NO RESPONSE AFTER REPEATED CALLS. NO ACTION TAKEN ON CAR. CALLED CORPORATE: 800-367-6372. VERY GRACIOUS. INVESTIGATED STATUS, REPORTED THAT REGIONAL MANAGER ADMITTED THAT HE HAD DROPPED THE BALL. RECEIVED LETTER (06/02/11) FROM M-B STATING "THERE IS NO EVIDENCE OF ANY FAULTS OR DEFECTS WHICH COULD HAVE CAUSED OR CONTRIBUTED TO THE DESCRIBED EVENTS." SINCE THE CAUSE OF THE MALFUNCTION WAS NOT ADDRESSED AND MERCEDES-BENZ DECLINES ANY RESPONSIBILITY IN THE MATTER, THE CAR CANNOT BE DRIVEN. OTHER SIMILAR VEHICLES HAVE REPORTED A SIMILAR MALFUNCTION, AS YET NOT ADDRESSED BY M-B. VEHICLE WILL BE AUCTIONED OFF FOR PARTS, SINCE IT IS NOT SAFE TO DRIVE. *TR
NHTSA ODI #10410715
94,095 miles · Jun 27, 2011
SeatsFire
THE DRIVER'S SIDE HEATED SEAT ON MY 2007 MERCEDES ML350 BURNED THROUGH THE LEATHER TODAY WHILE DRIVING DOWN THE ROAD. FIRST, I SMELLED SOMETHING BURNING AND THEN FELT IT BURN THROUGH MY SHIRT AND PANTS IN A MATTER OF 10 SECONDS. I IMMEDIATE PULLED TO THE SHOULDER AND FOUND THE SEAT SMOLDERING SO I TURNED OFF THE HEATER AND TH…
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THE DRIVER'S SIDE HEATED SEAT ON MY 2007 MERCEDES ML350 BURNED THROUGH THE LEATHER TODAY WHILE DRIVING DOWN THE ROAD. FIRST, I SMELLED SOMETHING BURNING AND THEN FELT IT BURN THROUGH MY SHIRT AND PANTS IN A MATTER OF 10 SECONDS. I IMMEDIATE PULLED TO THE SHOULDER AND FOUND THE SEAT SMOLDERING SO I TURNED OFF THE HEATER AND THE FIRE WENT OUT. I REPORTED THIS IMMEDIATELY TO MERCEDES VIA THEIR MBRACE SERVICE AND THEY TOLD ME TO VISIT THE LOCAL DEALER. *TR
NHTSA ODI #10408999