King///AMG

I know this may be a dumb question, but there is something that confuses me about the "touchshift" feature of the car. Now, when you use touchshift (manual mode) the gears shift from 1-2-3-4-D. Now, when you are in D technically this would be 5th gear manual mode. But, when it goes in D you are also technically back in "Auto Mode." So, how does this work? If you deccelerate the car as you are in manual mode "D" the car will downshift as if you were in "Auto Mode." So, whats the point? Maybe there is something I am not seeing or perhaps I do not know how to use it properly...

Also, they say if you hold the lever to the left touchshift picks the optimal gear.

I am sure any input would be better than where I am standing on this issue...

Thanks...

Chappy

I don't understand your question. Please clarify.

King///AMG

I had a feeling that my question sounded confusing...

Ok, this is what I meant to say....

I have driven cars before with this type of feature. But, when you shift thru all the gears up say 1-2-3-4-5 the 5th would hold, and if the car were decelerated the gear would stay in 5th and you would have to shift down manually.

Not with the Mercedes. When I shift 1-2-3-4-D and brake the car after it has gone to D it automatically downshifts for me w/o giving me the chance to downshift on my own. The system assumes the car is back in Automatic Mode when in reality I wanted it to stay in Manual...

So, is this just the way it is? Hope that clears my question...

Chappy

Yes. I've seen other comments about this operation previously. It will "hold" as you accelerate (in 1-4), but will shift down automatically in all of the gear selections depending upon engine load, etc.

It does not operate like an SMG. Hope this helps!

miroj

It will also shift on redline - to hold on redline you need an AMG upgrade.

Chappy

In first gear, mine just bounces off the rev limiter if I keep the throttle down. It does not shift into second.

King///AMG

Yeah, I figured that was the case. Unfortunately I live in Michigan, and the car is in storage so I can't test it out.

Thanks for the input though

ProjectC55

And that's the great thing about the older trannies ,especially when it comes to racing.When shifting manually the tranny won't downshift or upshift unless we want it to.

By the way Chappy,I got the E55 motor put in my C43 last night.Have'nt driven it as yet.We have tons of snow up here.I hope to head down sometime early Feb!

Chappy

When you know a date, lemmie know....

Chappy

I tested the upshift theory again last night on the way home....left it in "2" and it did not upshift at redline.....but the fuel shutoff was a huge bummer!

I left it there for another 3-4 seconds...no upshift until I moved the lever to the right.

King///AMG

What do you mean by "fuel shutoff?" A lot of ppl say that it will automatically shift from 1-2 when pushed past the redline in touchshift but not the case with my w208 55...

Chappy

I mean that the computers cut in and reduce the amount of fuel at redline....it's like falling off a cliff. I agree with you....despite hitting redline, the car will not upshift.

miroj

AMG sells an upgrade product called "transmission hold" for cars like the SL65 which can upshift.

Seems to apply to cars with speed-shift on the steering wheel.