12 problems related to engine and engine cooling have been reported for the 2012 Mercedes Benz E350. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Mercedes Benz E350 based on all problems reported for the 2012 E350.
Recall exists related to a potential issue with the high-pressure fuel pump, which could lead to engine stalling and increase crash risk. My 2012 mercedes E350 stops the engine in the middle of the road couple of times and for some reason, its stops or shut off the engine completely. The last time I was pulling out on the main road and stop right there. I made a big traffic, and I was scared because I cannot start the car. The guy stops and help me to push out of the road, but we cannot push the vehicle unless someone is inside the car. If I go out, it will automatically go on "park" and cannot push the car. When you check the dashboard the check engine light is not on. 2nd incident I bring this car to Mercedes Benz dealership, and I told them that there is something wrong in my car, I explain what was wrong but, the guy I talk to, told me that if the check engine light is not coming on, my car is fine. I repeated that the car stops ones in a while when the temperature light is on inside the dashboard and the engine shuts off. He told me if the check engine light turns on then I bring it back. I show the code reading but the same thing he said. I left and went back home and suddenly I get stranded again; I got stock in the middle of the road for 3 to 4 minutes. I start the car and suddenly the car starts and find the nearest place to pull over. I let it call down for couple of hours and start again, the car starts and try to go back home. When I was in the interstate hwy. My car engine shut off, so I quickly pull over, but I was having a hard time to turn the wheel. I believe that this is very unsafe and should have mercedes dealer has to repair this issue. I research on the website that 2012 Mercedes Benz E350 have recall to a potential issue with the high- pressure pump and other things like battery fuse relay box positive terminal and low fuel circuit.
[xxx]. The engine intake manifold on our 2012 mercedes E350 (64,000 miles) exploded with enough force to bend the hood up 2 inches. It was a damp cold morning & the engine had not been started in 12 hours. The car was not locked & the key fob was nowhere close. The fuel level was under 3/4 full. This happened when wife went to get something out of the car and when she pulled the passenger door handle to open - b o o m !!!! if this happened 30 minutes later, I would have been under that hood checking the fluid levels for a trip to san francisco. I would have been seriously hurt or killed!. It was towed to mercedes-benz of carlsbad, carlsbad California on [xxx] & they have not been able to identify the cause. They could replace the broken parts at the cost of $8,000 but that doesn’t fix the problem. And if it happens again & hurts or kills someone, they could be held liable. Similar intake explosions have occurred on these mercedes engines but mercedes is denying any knowledge even though it’s clearly a dangerous design flaw in this intake system. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).
The contact owns a 2012 mercedes-benz E350. The contact stated that while driving approximately 30 mph, the vehicle started to jolt forward. Upon shifting to fourth gear, the vehicle stopped jolting. While depressing the brake pedal, the vehicle jolted. There were no warning lights illuminated. The vehicle was taken to the local dealer where it was diagnosed that oil was leaking into the engine and the wiring harness. The vehicle was not repaired. The manufacturer was made aware of the failure and referred the contact to the NHTSA hotline. The failure mileage was approximately 82,000.
Hello, a manufacturer should understand that timing chain is a vital component in an engine, an so should not say just tell consumer that it goes bad at a particular milage. , as such in my mb E350 2012, is difficult to start the car and I think that this should be looked at. Thanks.
My check engine light has been on for about a year, I have been told by both the dealerships here in memphis/collierville that as long as the light is an orange color there is nothing to worry about but it has been on consistently for about a year. I had a diagnostic test done on [xxx] by dr. Benz affordable Mercedes Benz care and it was revealed that me control module, oxygen sensor, engine wiring harness has oil intrusion all throughout. I would hate to attempt to drive my vehicle and all of a sudden it is severely damaged because of this. I feel this may be a very costly expense and would like some assistance in taking care of this matter. I love my car and have not had any problems, and hope to have it several years more. I only have 116,038 miles on this 2012 vehicle that I purchased in 2015 information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).
Camshaft sensors and solenoid leak oil internally which then gets into the sensors electrical connector. From the the oil enters the engine wire harness through capillary action maki g it’s way to other sensors and ultimately the dme (digital motor electronics). This can cause February dme to fail which in turn can make the engine stop running.
The contact owns a 2012 mercedes-benz E350. The contact stated that after retrieving the vehicle from the dealer, the check engine warning light was illuminated. The vehicle was taken back to the dealer where it was diagnosed that there was oil contamination through the camshaft sensor. The contact was informed that the engine wiring harness needed to be replaced. The vehicle was not repaired. The vehicle was taken to an independent mechanic for confirmation of the diagnosis. The manufacturer was notified of the failure. The approximate failure mileage was 54,700. The VIN was not provided.
Cam adjustment solenoids leak oil into the engine wiring harness causing component failures, rough running and stalling. This problem was diagnosed and replaced by the dealer at 48k miles and has returned at 116k miles. There is a recall for models prior to 2012 and this car has the same problem. Eventually the engine will quit running at any given moment posing a dangerous situation.
The cam solenoid sensors are picking up oil, then it is being disbursed in to the electrical systems of the vehicle. It is flowing into, O2 sensors making the vehicle run in a full rich mode, it is reaching the computer system that runs the entire vehicle. This repair can cost upwards of $8000. I have done online research and it is a very common issue amongst many mercedes vehicles. The issue is a known problem, it was being repaired but mercedes stopped the repair. It comes from an internal issue, not a fail to maintain problem. I contacted mercedes, they say they don't know of the issue, but they did tell me, they know how to fix the problem for a cost of over $ 5000. To us. Online searches have resulted in many complaints by owners. Regular driving is a result of the issue. Now we can't drive out vehicle due to fear of the oil in the electrical lines reaching our cpu for the entire car, which will result several thousand more dollars on top of the repair cost. We have paid $ 800. At this point only to be told, do not drive the care or worse damage will occur. So we have a beautiful car that is collecting leaves and dust. I await your response, garyw. Smith. We contacted mercedes bens of raleigh nc, they are our contact point, they don;t know of an issue but know the cure for $5000. Plus dollars, hmmm, curious. . .
Fan fire. Oil smelling smoke which turned to flames.
2012 E350 coupe. Car was making an odd "clunking" noise when started, but would fade or idle out after a couple of seconds. Took it into mb service today and was just informed that my car has a camshaft problem and it's wearing on the right cylinder head. Service rep says they have seen several cars come in with the same issue. Repairs cost $9,000! seems like an engineering/mechanical defect as I was told there was nothing I could have done to prevent this issue.
While driving on an express way in dallas, texas my gps made an error concerning an exit and I was required to divert quickly to the left to make exit lane . Time was 6:00 pm ,heavy traffic conditions and road and weather conditions were excellent and dry. My mercedes pre activated a skid mode and there was approximately a 70% cut back in engine power . A yellow engine light came on and skid mode came on operator screen but there was no skidding taking place. I was helpless with no power to keep up with the 50-60 mph traffic while trying to get into lane . Consequently a semi tractor struck my left rear fender /bumper causing damage to my mercedes. There was no damage to the tractor. According to mercedes the vehicle was supposed to do this as a safety feature. If this is true then they actually in my opinion while developing safety features created another un safe condition where as the semi could have run over my wife and I killing us both. This was truly a near miss and we are very much concerned about it happening again to us or some one else, resulting in a fatal accident, not just a fender bender. Mercedes is in denial concerning any un safe condition and refused to take any responsibility for any damage that this car caused. Please review this vehicle for possible call back before some one does get seriously injured. Perhaps skid mode or traction control may be helpful but engine cut back and power loss needs to be left to the operator not the vehicle controlling it's self. Your help would be graciously appreciated.