[Alpine328]

Took family to dinner last night.

Started up the car...three seconds later...

THE CAR JUST SHUT OFF!

(Yellow Service Engine Light came on.)

Pushed the button...and...

It started back up and ran fine. No codes. No warning lights.

WTF??

[kevinbahnz]

shit happened to me last year , for a whole week.... then it was gone.. dealership couldn't do jack without warning lights..

[Alpine328]

Is it possible the FOB backed out??...and shut the engine off??


I don't have the instant replay to remember if I had to push the FOB back in or not. I remember fiddling with it...but it was so quick!


So far...it hasn't done it again.

[AndreyT]

Originally Posted by Alpine328

It started back up and ran fine. No codes. No warning lights.

Did you really check for codes? Just because you have no warning lights does not mean you have no codes stored in the ECU.

[kevinbahnz]

Originally Posted by Alpine328

Is it possible the FOB backed out??...and shut the engine off??


I don't have the instant replay to remember if I had to push the FOB back in or not. I remember fiddling with it...but it was so quick!


So far...it hasn't done it again.

no the FOB did not come out. i was so pissed off because this happened for a whole week. then all of a sudden it just went away. Hasn't happened since, but now almost every time I start it in the morning or when cold the half engine symbol comes on , then I turn the car off immediately and back on and its fine again.

[Alpine328]

Originally Posted by AndreyT

Did you really check for codes? Just because you have no warning lights does not mean you have no codes stored in the ECU.

I checked for codes using the stalk...says everything is fine.

Would this require BMW service checking the computer??

Originally Posted by kevinbahnz

shit happened to me last year , for a whole week.... then it was gone.. dealership couldn't do jack without warning lights..

Anybody know if this is a "KNOWN" issue?

[AndreyT]

Originally Posted by Alpine328

I checked for codes using the stalk...says everything is fine. Would this require BMW service checking the computer??

A couple of months ago my car entered full-blown limp mode during an extended highway drive. I feared HPFP failure (despite having N55). However, it displayed no warning lights of any kind and nothing could be seen through the stalk menu. Next morning the problem cleared by itself.

It took it to a dealer two days later. Thy said that they found failure codes stored in the computer. They replaced my mass airflow sensor under warranty.

So, if you are sure that the car behaved improperly, it might make sense to take it to the dealer. However, I remember that the "unexplained engine shut off while coasting" problem has been reported here before and, if memory serves, it didn't usually leave any codes in the computer. I don't know whether your issue is related.