"Glow light". Glow plug indicator, maybe? Check the fuel tank; make sure regular gas wasn't introduced. In my experience, the glow plugs on the older MB diesel models don't last forever. I don't have any service info for this car, so check under the hood for the maxi-fuse/relay box near the driver front of the vehicle. Look for a relay/fuse labeled 'glow plug'. Test it.
Thursday, September 29th, 2011 AT 11:31 PM