Two problems related to engine and engine cooling have been reported for the 2012 BMW 335. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 BMW 335 based on all problems reported for the 2012 335.
On my car there is what is called the bowden cable that works to open and release the hood so that it can be opened. The problem with the design of the cable is that it sits right over a coolant hose leading to the engine. What happens is that the coolant hose gets very hot and the bowden cable that sits right over it melts along with the coolant hose. I just noticed this and felt it is a huge problem that could cause the coolant hose to either burst over time.
On Saturday 8/8/15, I was parking my BMW 335i car to get groceries, and while entering the parking spot, the engine began racing out of control. I hit the brakes hard, but the car would not stop. I tried to shift into neutral, but the shift control was locked in drive and would not move. Lastly I finally hit the stop engine button, and the car finally stopped, but not after I had bumped into the car in front of me in my parking space. As I was resting against the bumper of the car in front of me, I had been able to move the shifter after stopping the car's engine into park, and re-started the car. The engine idled at 7000 rpm, totally racing again. I turned the engine off and sat there for about two minutes. I turned the engine on again, and it finally idled normally at 800-1000 rpm, put it in reverse, and backed off the bumper of the car in front of me. I got out, and saw no damage thankfully, but was very afraid of this out of control car behavior that I experienced. I now know to hit the stop button if the brakes just don't work well enough if this unintended acceleration issue happens again. I am contacting my dealership to see if they are aware of this issue in the 335i, and see if they can effect a repair.
| Engine And Engine Cooling problems | |
| Loud Engine Noise problems | |
| Gas Recirculation Valve (egr Valve) problems | |
| Engine Stall problems |