HI Tunaglove,

It did use to run. It was also intermittent as well.
I just replaced the RCM and it seems to be ok. I haven't heard the pump run yet but there is no CEL as of late.

I purchased the RCM from Mercedes and it came with new fuses.

I just read in this forum that due to a HW designers flaw we are all subject to a 20-40k RCM shelf life.

That really sucks if it is true. RCM's aren't cheap. I have my old one and it looks clean and new. No burnt areas what so ever.

Really strange.