Craig C

2014 E350 with 59k on the clock. A few days ago the lane assist came up inoperative then it was stability control and now a few minutes ago abs, emergency brake light and check engine. Steering is more difficult too. What happened?? Any info is appreciated.

thefisch

Have you checked for codes since check engine is on?

kajtek1

1. check for codes
2. erase them
3 start observing car voltage during driving
4. recheck if codes come back.
Car sensors don't run into family circles and they don't fail in big numbers at the same time.
More likely you had voltage drop.
At this mileage alternator brushes should be good (unless you use power excessively) but idler pulleys in last years become weak link and they can stop the belt/alternator.

Craig C

I haven't checked the code yet. All this happened about an hour ago. I was thinking a voltage drop and was looking at a battery issue. Question about the 2014 e350. One battery under the hood, one in the trunk and another in the dash? Is that correct?

kajtek1

If you have ECO, that what the trunk battery is for. Should not affect other things.
The battery in dash was in earlier models.

ItalianJoe1

Steering difficult sounds like a belt issue.

Codes for multiple systems is often a wheel speed sensor issue.

- Mover -

I had similar symptoms in another car I owned years ago. Somehow the belt came loose and the alternator wasn't spinning properly.
Tightened up the belt and all was good.

Mr.Fly

kajtek1

Power voltage drop will affect electric PS.

Craig C

To make matters worse MB can't get my car in for the next 17 days! It has to be belt, battery or alterator related. The abs and brake light went off but came back on when I used the heated seats. This time cruise control and my speedo went out too.