So about 6 months ago, I was about 8 hrs away up in northern Wisconsin on a fishing trip. I was about 45 minutes from our cabin and noticed the gear selector on the dash change after overtaking a car on a 2 lane road. It only showed P, R, N, D and did not highlight whether I was in D or R or whatever. I stopped the car, turned it off and back on to no avail. I pulled away and could tell the car was in a higher gear than 2 or 3. It then threw a CEL. I pulled into a parking lot and let the car sit for 15 minutes. I restarted and the car still wouldnt show me whether Im in P, R, N, or D. The car is also stuck in 1st gear. Drove about 10 minutes at 15 mph and shut the car off again. The car was now showing me the gear selector but still had the check engine light. The car was no longer in limp mode, so I drove to the cabin carefully. I let the car sit for an hour and restarted it. Still CEL but no longer in limp mode. I took the car and drove for about 10 minutes and everything was fine outside of the CEL. I pulled over, turned the car off and restarted. Everything was fine and now the CEL was off. Drove the car again the next morning and all was fine--no limp mode and no CEL.
I drove home and the car was fine for an hour and then while on the highway, I look down and I'm in limp mode.....stuck in 4th (ish?) gear so I drove back home around 60mph (2k rpm) the whole way. Once back in Chicago, I turned the car off and upon restart, I'm in 1st gear limp mode. After a few cycles of the key, it was no longer in limp mode but CEL still on. After a few more cycles of the key, there was no CEL and it isnt in limp mode.
I took the car to my indy who Ive used for years. He used to run a BMW dealers service and can fix anything. He had the car for a week and couldnt get the issue to replicate. He spoke with friends of his at Mercedes dealers and they didnt really have any insight. So, after a week, I picked the car up and the car has had zero issues since....
This morning on my way to work, the same thing happened. I also noticed (and this may have happened last time but I didnt notice it) that after turning the car off and restarting, the chime in the cabin upon start up did not play which leads me to think it is an electronics issue. Im sure if I let the car sit for 2 days, the issue will disappear again for several months only to resurface.
Anyone have this problem before?
I drove home and the car was fine for an hour and then while on the highway, I look down and I'm in limp mode.....stuck in 4th (ish?) gear so I drove back home around 60mph (2k rpm) the whole way. Once back in Chicago, I turned the car off and upon restart, I'm in 1st gear limp mode. After a few cycles of the key, it was no longer in limp mode but CEL still on. After a few more cycles of the key, there was no CEL and it isnt in limp mode.
I took the car to my indy who Ive used for years. He used to run a BMW dealers service and can fix anything. He had the car for a week and couldnt get the issue to replicate. He spoke with friends of his at Mercedes dealers and they didnt really have any insight. So, after a week, I picked the car up and the car has had zero issues since....
This morning on my way to work, the same thing happened. I also noticed (and this may have happened last time but I didnt notice it) that after turning the car off and restarting, the chime in the cabin upon start up did not play which leads me to think it is an electronics issue. Im sure if I let the car sit for 2 days, the issue will disappear again for several months only to resurface.
Anyone have this problem before?
