[Scott_S]

We have a 2011 X5 35i with about 108k miles on it. Every now and then it will throw an engine malfunction warning and reduce power, but will go away after turning it off and back on within a few seconds. It can be weeks between incidents and I am stumped. I originally assumed that it was the VANOS solenoids so I cleaned them and it made no difference. I then replaced them(with an off brand just as a test) and it seemed to get better for a little while but then continued to do the same thing. It is difficult because it can happen while driving down the highway with the cruise set, accelerating at low speeds or even slowing down for a turn, but it always goes away after turning the car off and back on. Hoping someone might be able to help point me in the right direction.