John H

I've had my e55 for six months now with no issues. That is until today. The car would crank but not fire. Not even a sputter after about a dozen attempts. My "Service A" is past due by 100 miles so I decided to hit the "R" button on the dash while I was cranking the car. The second I touched the "R" button the car fired - I do not know if this was coincidence or not. The car has had no problems restarting since. Any ideas or suggestions?

Howellja

hitting the R button was a total coincidence. Good luck with the E55!

John H

Well, It just did it again. Unlike last time when it just wouldn't fire while cranking, this time is just plumb died while at a stop light and wouldn't re-fire. As I pushed the car to the side I was heckled by a passenger in a rusty Civic. After about 20 minutes and 20-30 crank attempts, it fired and I made it home. After shutting it down I tried to restart and it fired right up.

Plugged fuel filter?
Bad electrical connection?
Time to trade it in for a w211 e55?

ProjectC55

Sounds like your crank angle sensor went good bye! This has been a common problem on some of our cars but not all. Just replace the sensor and you'll be good to go. I never had to replace mine so I don't know the cost of the part. But it sounds like yours is bad if not finished.

John H

Well, I took Project's advise and changed out the crank position sensor two weeks ago. So far the car is back to its old reliable self so I think the problem is solved. The part was $75 and was easy to change as there is one bolt and one electrical connection. Thanks guys!