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93 500 SEL
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Discussion Starter · #1 ·
I haven't had any transmission issues until now, and it was recently serviced by a dealer. When cold, my 93 500 SEL slips into reverse fairly easy. Once it warms up, for the past few days, it's having trouble. I know the dealer will want to put in another tranny, but this one works smoothly otherwise. Anybody have any ideas about what's causing the problem? A band? Electronic control unit somewhere?
 

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I hate to be the bearer of bad news to you, but my '92 300SE was/is doing the exact same thing. Revereve will eventually go out, and sooner than you think, but the forward gears will work great. I have had a bunch of knowledgeable folks look at it and the concensus is that something called a 'squash plate' is almost gone. When it fully disappears you will no longer have reverse. This happen to me in a matter of days. The best I can find is about $1750US to have fixed.

Good luck and let us know what happens in your case.

Mark
 

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Discussion Starter · #3 ·
Working on it. A phone consult with an independent said it could be pressure, since this is a hydraulic tranny. Said he'd need about four hours to check it out. Will post outcome for benefit of others.
 

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93 500 SEL
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Discussion Starter · #4 ·
Problem solved

Mechanic checked transmission -- bad pressure plate and something about an O ring. Since he has to take things apart anyway, he suggested a rebuild for $2K. From my experience with BMW and what I've seen on the forum, this sounded like a good deal, so we're doing it.
 
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