rexemper
Senior Member
- Joined
- Jan 5, 2007
- Messages
- 770
- Reaction score
- 136
- Location
- Berkshire
- Your Mercedes
- R230 SL500 - oh yeah!
Hi
Just back from a quick run out in the SL - needed to go to the shops. Normally the 7G gearbox is lovely and smooth and you don't really notice the box changing up and down.
However, twice now it has exhibited some strange behaviour. On these occasions, it has taken a lot more revs to get it moving and it fails to change up normally. The first time this happened, I was redlining it on the rev counter and it was only doing about 40mph and it wouldn't change up.
It did the same sort of thing again today and I also noticed that when I put it in reverse it wouldn't really move even though I was revving it. Changing it back to Drive and there was a loud 'thunk' and then it would move. I changed it from D to P a few times and there was a loud thunk each time (my BMW has always down this when changing from P to D).
Each time this has happened, switching the car off and then on again seems to restore things to normal. On the two times it has done this, it has been from when I turn the car on as opposed to starting to happen whilst driving.
Its very odd as the gear indicator was showing D and S in the display which is what its normally on.
Any ideas or thoughts???
Just back from a quick run out in the SL - needed to go to the shops. Normally the 7G gearbox is lovely and smooth and you don't really notice the box changing up and down.
However, twice now it has exhibited some strange behaviour. On these occasions, it has taken a lot more revs to get it moving and it fails to change up normally. The first time this happened, I was redlining it on the rev counter and it was only doing about 40mph and it wouldn't change up.
It did the same sort of thing again today and I also noticed that when I put it in reverse it wouldn't really move even though I was revving it. Changing it back to Drive and there was a loud 'thunk' and then it would move. I changed it from D to P a few times and there was a loud thunk each time (my BMW has always down this when changing from P to D).
Each time this has happened, switching the car off and then on again seems to restore things to normal. On the two times it has done this, it has been from when I turn the car on as opposed to starting to happen whilst driving.
Its very odd as the gear indicator was showing D and S in the display which is what its normally on.
Any ideas or thoughts???