I have a 92 300SL. My automatice transmission seems to "slip" in reverse.
When backing up, it's as if it were a manual and the clutch was part way
disengaged. It's not consistent, but does so more often than not. Doesn't
seem to matter if it's cold or warm. Transmission fluid is clean and full.
All forward gears seem to be fine. Also, when engaging reverse from park,
there is a long hesitation before the trasnsmission engages. Any ideas or
Change the internal filter, or have it changed. While it may look just
fine, it's inhibiting the pressure needed to engage the bands and servos.
Due to the strict cleanliness involved, I'd take it to a transmission shop
and ask for *only* the filter change. They'll probably hard-sell a full
service (with a "free inspection" that usually involves a suggested
transmission rebuild for a "special" price); that's up to you, but I'd try a
simple filter installation and see if that doesn't fix it. I have heard
(not sure if it's true) that MBs should have genuine MB transmission fluid;
if you do have the fluid changed (which they probably have to do when they
drain the transmission for a filter change), you'll need to find out whether
it needs to be genuine MB fluid, or one of the standard fluid types the
transmission shop would use on an MB.
Those symptoms have happened to me on a few cars; it's always been a filter
that needs changing. About $99 if I remember correctly.
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.