[PagedAtol17]

Hello, so here is what happened with my 2015 F10 528i xDrive. I was driving on sunday about 75-80 mph (regular traffic flow speed) on the highway and the car threw me 3 errors. Adaptive Headlight Malfunction, Transmission not in Park and then on the instrument cluster it showed starter/alternator message. I had just drove the car for about 15-20 minutes before it showed up.

The car would not start but all the electronics like the cluster, idrive everything would turn on. Called BMW roadside, they thought battery might be dead but I told them it wasn't as all electronics were turning on but they still send a jumper. That didn't work. Then we got it towed to my local BMW dealer (Erhard BMW of Farmington Hills). The car also could not be put into neutral as it could not be turned on and so we had to drag the car onto the tow truck with the tow hook while it was in park. Also, my car had just come back from the same BMW dealer on that wednesday (4 days before this happened) for having the ICM module replaced. So tow truck and I dropped off the car sunday night at the dealer with the night drop in box and everything.

Luckily I still am under CPO warranty and only has 53k miles so diagnosis and everything is covered.

The next day, I go to my SA the next morning when they open and explain the situation and he gives me a loaner X1 and says I will call u back and let you know what is going on after they check out the car.

He calls me the next day and says that BMW wants them to test the engine and stuff for a day or two and then see what it is going to need. I say ok.

He calls me on thursday (today) and says that BMW is replacing the engine. I asked what happened with the car and he told me that something locked up internally and that is all he told me and that BMW told them to replace the engine.

So I am just wondering if anyone might know what the issue could be or if they are trying to hide something and just not tell me the full story or what?

Thanks for any and all help on the matter!

[doodlebro]

This is a well known issue with the N20. The timing chain guides wear abnormally and eventually cause timing to get all fucked up. Be glad it happened under warranty, outside of warranty you'd pay $15K+ for a new engine.

[pierreye]

I thought all F10 N20 after 2014 come with improve timing chain guides and tensioner?

[baconbits]

I think it's 2014 calendar year with build date after March.

A 2014 model year built in 11/2013 still has the bad guides, but a 2014 model year built in 4/2014 should be good.

It might be 2015... I can't remember.

[pierreye]

Originally Posted by baconbits

I think it's 2014 calendar year with build date after March.

A 2014 model year built in 11/2013 still has the bad guides, but a 2014 model year built in 4/2014 should be good.

It might be 2015... I can't remember.

Maybe but the OP car are 2015 so should definitely had the revised rail and tensioner. Make me doubt if I should replace my 2013 F10 rail guides and tensioner if the problem is not resolve.