I did something very stupid today. I helped a friend of mine to jump start his car. We somehow got the cables crossed, which resulted in a spark at my battery. His car was fine afterwards but mine has now multiple problems. It is very hard to start, has very low idle speed and the ABS light stays on. The car is a 1992 300 TE 4-matic, it started and ran perfect previous to my not so smart jump start attempt.
I checked the fuses and wiring. Everything looks okay, but I am afraid I did some damage to the more delicate electronics.
Any and all input will be greatly appreciated. It will most likely have to go to a shop, but I would like to have an idea of what I am looking forward to.

Thanks for Your response !

You blew the fuse on top of the OVP relay...

That would be my guess also.

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07 E350 4Matic wagon, 06 S430 4Matic, 99 SLK 230
retired W210 (x3), W124, W126

hopefully you didn't blow the innards out of the OVP...

...all the classic signs...good luck with the fuse i think its a 10a plug in type

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1989 300ce 129k
( facelifted front,updated tail lights, lowered suspension,bilstein sports, lorinser front spoiler, MOMO steering wheel, remus exhaust,stainless steel brake lines). (Gone)

1997 s320 154k (what a ride). Sold with 179k miles. Replaced with Hyundai Equus

1994 e320 Cabriolet 108k



1972 280se 4.5 153k Owned for 12 yrs, sorry I sold it


[/SIGPIC]

I made the same blunder once, however without consequences except dumping the jumper cable . Hope in your case it is only the OVP fuse.

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1996 E320 since 1/16/08, 171K miles as of Feb 2011

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1989 300CE - R.I.P. Dec 29 2007
Other MBs (sold): 1992 300E-24 - 1979 350SLC - 1984 230E - 1990 300CE

Great diagnosis Gentlemen, it was the Fuse ! I can't tell you how much I appreciated your help.

Thanks to everybody that responded to this post.