Any auto zone store can just hook up the OBD2 scanner to read the code and reset the light for you. Or you can do it like me, buy a scanner for $50 and do it yourself. I got mine from eBay for $47.
All M112 engines (V6) suffer the MAF (Mass Air Flow) sensor problem, which will trigger the check engine light.
Part will run you about $260, take 30 seconds to install and reset the light.
Originally posted by sshanken
The check engine light went on the other day on my 1998 ML 320, when I was in the desert? The gas cap seemed tight but I removed it and put it back on. After a short time, the light went out. Is this normal?
One time the Mercedes guy told us that only they could turn the light off and charge a hefty amount of money to do so.