When I shift to reverse gear, I have to wait for almost 3~4 seconds to get into reverse gear. but when operate the other gears, they are fine, just only in reverse gear. so I am wondering what happen to the reverse gear? can I adjust the shifting timing or somtthing?

You can't adjust this out without taking out and apart the transmission.

If the car is a 1994 S500, there was a valve body mod to increase the fill rate of the reverse clutch pack. However by this time I would think that the reverse clutches are worn out!

Are you low and oil?

jack

The oil is always enough. by the way, the car is 94 S500, so MBDOC just mention something about the "reverse clutch", shoud I have them change? are they expensive?

A tech article from The Star (http://www.mbca.org/MBCA_parts_wear_out.htm) mentions that delays in engaging reverse may be a sign that the tranny needs an overhaul. Hopefully that's not what's required to fix it...

reverse gear delay about 7 seconds
 

hello .
i have mercedez benz SEL500 1993 model with all options...there was no problem in any shift...no noise, i had a car wash from service center at petrol pump...he sprayed diesel on engine and then washed it with water..also from beneath the car...after 5 hrs we were going out we started the car ,,,when we pull gear to reverse ,there was a delay of 7 seconds.but the forward gear is working fine like new...we then changed the transmission oil(original MB) and changed the filter......still the problem last......tel me what should i do..during wash i didnt removed the covers...help me