I have a 1997 SLK 230 with an automatic box that is giving me problems and i wondered if anyone else has experienced the same. Without any warning whilst driving the gearbox seems to get stuck in a low gear ( i think 2nd) then i have to pull over and stop. The car then wont pull away in drive but just revs even though it is in drive mode. The only way i can resolve it is to switch the engine off and the back on and it's fine until the next time. This is very frustrating and none seems to know why it is happening , even MB. I thought it may be something to do with the ATF as I know I have a small leak. Should I replace the ATF or fill it up. Any contributions would be really welcome. Thanks.