I just had the same malfunction on the same year/model car with 43k miles.
Malfunction disappeared in a short time after a recycling (turn off/on) of
the computer.
This happened after the car sat for five days when I was out of town. I
beleive it is a minimal battery and that was the suggestion also from my
dealer. I'm bringing the car in on Thursday to check it out.
A curious side story to this dealer visit is the fact that my factory
warranty expires on the 30th of this month, one more week. My maintenamnce
system on the car tells me I have 2800 miles to my next service which MB
tells me can get quite expensive, possibly over $1K or more. I asked if
they'd do it at this mileage and was told not until mileage due shows 2k
miles or less. Guess who's going on an 800 mile drive this week? Silly
games, isn't it?
Howard

"Howard" <howardh1951@(nospam)gmail.com> wrote in message news:...