Hey Solnyc2,

The only code I'm pulling is the P0410. I got a new pump pretty cheap from ebay so just waiting on that then I'll replace it. I tried to find the MB repair kit - but couldn't find one anywhere. I hope it is just the pump that decided to pack in and not a faulty RCM that caused it to.

When I checked the RCM it looked like new, no visible soildering issues or dirt or anything. I've replaced the check valve and I guess if the new pump doesnt solve the CEL issue, then RCM has to be next on the shopping list!