I'm taking a shot in the dark here seeing if anyone here might have some experience with this issue or even a wild guess.
I'm trying to troubleshoot an electrical problem with an 2001 Freightliner. It's developed a problem where a bump will cause the wipers to shut off and park (you can restart them normally), the radio to glitch, and sometimes the ABS light to come on.
If it's a sunny day and you aren't using the wipers a bump can still cause the radio to glitch (cut out for a microsecond) and possibly see the ABS light flash on for a second or two.
The radio and the wipers ALWAY happen together. Sometimes the ABS light doesn't come on BUT -IF- it does then it's guaranteed the wipers and radio will do as described then.
It's got to the point where it happens a lot. It doesn't take much of a bump. Even accelerating from a stop can sometimes do it now.
This started all of this late last winter and progressively got worse but after trying to find the source and tightening connections, shaking wires, etc it 'magically' fixed itself in early spring and was fine all summer. It all returned this fall when the temps dropped. I don't know if that's coincidence or a clue.
Since I'm a good 1.5 hrs from the dealer, AND I can't help but think the problem is probably an easy fix IF I could find the problem area, I'd like to avoid the dealer $$$ if possible. I've got a couple of things I want to check that I've researched via schematics but if anyone here has any experience with these vehicles and knows where a common denominator might be to narrow in on the problem, or even better... knows what the problem is.... Please let me know before I go crazy searching for the issue with no luck at all so far.