CAR WOULDN'T START. Ok guys and gals....I had the same issue most of you had. I searched the internet and the forum and found the normal things to check. Here was my scenario:

1. Car ran and drove fine.
2. Wife took car to store (It's her car...I barely fit in it!)...died on way. After 20 minutes started got it home 2 miles away.
3. That evening went to start it for a check. Car would not even spin over. Like many of you say, "Like the battery was removed BUT ALL LIGHTS and OPTIONS function."
3a. Thought it might be the SKREEM unit (key fob control) but my doors locked/unlocked, alarm functioned with the remote. So, I ruled that out.
4. Decided after reading many posts that it was probably the Crank Position Sensor. I replaced it.
5. WRONG in my case. Should have known because the car wouldn't even turn over. In order for the issue to be the CPS, the car would spin over but not fire. Now have a spare for when THIS really goes out.
6. Decided to pull out the Relay Control Module as many have tried. BUT, my solders looked good. I re-soldered anyway. This did not fix it.

So, long story short, I put the RCM back in BUT with the black plastic cover off. I had my friend try to start it. NO START. BUT, we see the issue. The ignition relay (middle relay of 5 under this cover) would not engage. We bypassed it with a lead and BAM! The car started. We tested every voltage, ground, and resistance. It seemed fine but the coil would not engage the relay....so no start.

After much searching, I found a site that carried the RCM...AND....for $125 new (half of Mercedes or parts house cost) and it arrived as an OEM Mercedes part that perfectly matched my original in two days.

I ordered one and it arrived today, simply plugged it in and the car started immediately.

I hope this helps you guys with the similar problem. This was recalled on the CLK/SLK platform but Chrysler decided not to do the recall.

Site: More Information for AIRTEX / WELLS 1R2032
Order page: http://www.rockauto.com/catalog/x,ca...,parttype,3380

GET THE AIRTEX. ITS OEM.

This is the AIRTEX part on the ROCKAUTO.COM site. Like I said, it arrived as the MB original part.

Joe D.