Originally Posted by pmatocha
my 2003 SLK230 is now up to 85k miles and beginning to shift a little less smoothly (automatic trans) than when purchased at 48k miles. No maintenance is mentioned in owners manual, manual says take to dealer even to check oil level. Any suggestions?
I perhaps have a similar problem in that, particularly at low temps & starting out, the 1-2/2-3 shift will sort of clunk into place, and when slowing down, it feels like the transmission doesn't want to disengage until it's right at the point of stopping. (So I get this clunk/de-surge at that point.)
I've mentioned this to my dealer several times but they've offered no solution. (No real a surprise there.) I bought the car with 50k (and the problems) and now have 110k. Switching back and forth between S & W modes doesn't seem to effect the problems/performance.
Mostly this is annoying more than anything.
In maybe a related problem/issue, particularly if I'm just rolling down a long steeper grade under cruise; 1) the car will shift down to maintain speed (which is quite abrupt!) and it is seemingly going back and forth into a mode where it is utilizing engine braking. (So it feels as if the system is retarding then releasing, retarding then releasing, 10-20 times per mile.) Perhaps this is the way it's supposed to work - though neither of my Fords did anything like this - so I might have two issues.
First, the low speed shifting in the transmission, which sounds like a similar issue to the initial poster's and which the suggestions above might help, and second, the transmission/cruise/engine speed interaction, which might or might not be related or helped.
Anyone with any similar issues?