Hi all,

I'm having electrical issues that the dealer is incapable of fixing.

It is intermittent. The windshield wipers stop functioning. While they are non functioning, I noticed that the garage door opener buttons also have lost power, and the the switched 12 volts outlet (front and back cigarette lighters) are non functional.

Dealer has replaced some windshield wiper switch at the base of the stoke on the driving wheel, as we were lucky enough to have the problem happen while the car was at the dealership.

We got stranded in the rain away from home and had to wait for a couple hours because the repairs they had done had not addressed the pblm.

I checked the fuse box to see if the three systems (wipers, door opener and swithced cig lighters) were on the same fuse and the fuse was lose or smthg, but no.

SHould not there be some kind of electrical schematic the dealer could look to see where htese three systems interesect to help diagnose the issue?

Has anyone had that wierd problem?

Thanks

Have you received a "recall" for a voltage regulator up-date..too high OR too low charging voltage can cause those problems..

__________________
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Thanks for your reply.

I have not received the recall you mentoin, and I am the original owner

I will mention this when I call the dealership later today.

At this point, the SA has requested all my keys, they changed the AAM.

I just hope this is fixed soon, I'd like to be able to use the ML on wet pavement, for high occupancy. That's kinda what I bought it for...

Thanks again for your reply MB Doc

SK

Here's a copy:

http://www.alldata.com/tsb/Mercedes-Benz/1144306800000_1145257200000_2005070017D/index.html

__________________
W163.154, M112.942, 722.662, ZF.970.402

Thank you for taking the time to post that information.

Should this be part of the solution, I am most troubled by the fact that the TSB describes that the low state of charge of the battery may prevent convenience features from functionning. I get the garage door opener, and the cig. lighters. I just thought that windshield wipers had made it past the "convenient" feature , last week, I found them critical safety devices in a downpour. I guess there's always Rain-X, but I hate that stuff.

Thanks again!

SK

This is an odd ball incident it seems, but should it help anyone...

Wolfgang, the TSB you referenced above was performed by the dealer, thanks for the info however!

The AAM was changed, and the problem has not occured since. Should the problem resurface and a solution be found, I will post it here for reference, just in case someone might derive benefit from that info.

Thanks again for the contributions.