Originally Posted by Fenwick223
I'm not an expert but I don't think that you can remove the relays one by one, inspect, and replace. I believe it is one complete unit. Since it is basically an MB part, I think that some folks have gone to a MB dealer and gotten the entire unit at a lower price than from a Chrysler dealer. Good luck.
Yes, the relays are 'open frame' types built directly on to the PCB so not really replaceable even though you can unsolder them and remove them. Have a close look at the relay contacts and check that the armatures all move freely. I am almost certain you will find that the problem will not be with the relays themselves but with the solder connections on the PCB or a hairline fracture in one of the copper tracks. What tends to happen is that the pins move relative to the PCB and the solder joint fractures around the pin. This can be very difficult to spot unless you move the relays whilst looking at the joints. I will see if I can post up a picture. In any event you might just as well run a soldering iron over all the joints to reflow them considering it only takes 10 mins or so.