So recently, My 240d has had a heck of a time starting up, taking a few minutes cranking before it'll catch.

I searched around here a bunch, and suspected the glow plug relay. I put in an order at the local napa for one, as well as glow plugs and a cleaner from mercedes source. I still haven't received the plugs, but they all ohmed out at about 1-2 ohm after I drove the car a while.

SO, I got the part from napa, and pulled the part that i suspected was the glow plug relay. It was a fairly large black box, right behind the driver side headlamp. However, teh NAPA relay doesn't look anything like it!

Did I get the wrong part, or are the glow plugs located somewher else? Where woudl I get the correct part?

Thanks!