I have an 04 320 4matic that just had the recall done in which the dealer replaced the fuel tank and both pumps . I now have a problem where it some times just cranks with a no start . Its been back 3 time since and they say they can not fine anything wrong. It has in the past had the cps replaced. its got 205,000 miles on it and in great shape except for this. Any Ideas?
Thanks

 

Was the CPS replaced with genuine Bosch\Mercedes part? I had problems with an aftermarket OEM CPS that failed after 3 months same symptoms randomly would not start until one days it left me stranded. Replaced with genuine Mercedes CPS part 6 months ago no problems since.