This is showing you that there is a part of the tranny worn too much so that when the fluid and the tranny are cold that reverse does not engange, when hot things expand and thus everything works. See when everything is cold it shrinks, when hot it expands. I had a similar problem many moons ago in an old Mercury Lynx where the tranny would not shft out of first until it warmed up then it was fine. On that one it was a worn plastic Governour gear, when hot it expanded and worked fine, when cold the Govenour did not spin as the gears were seperated just enough to allow it to no longer mate properly. Not sure how the MB trannies really work as I have never taken one apart. Probably a clutch band slipping in it.

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~Jamie
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2003 Pewter C230K SC C1, C4, C5, C7, heated seats, CD Changer, and 6 Speed. ContiExtremes on the C7's.

1986 190E 2.3 Black, Auto, Mods to come soon.....