7G shift quality

Legin · 10-11-2008

OK, I have read the threads but still cant decide if TADTS or mine is a dud. Basically it bangs hard from 3-2 when cold and occasionally 2-1, this is worse if the car has previously been driven hard and minimal if it was driven by my granny, the more carefully I drive it thru warm up the more obvious it seems. Once the tranny is fully warm then it works perfectly. So, is it adaption, valves, software or the normal poor old show ? 2005 SLK AMG 55

DansSlk · 10-11-2008

What about manual shifting, does it still kick.

mtiede · 10-11-2008

I don't think my SLK 350 ever "banged" from 3 to 2. And only occasionally from 2 to 1. And it hasn't done that for a long time. Maybe I drive like a grandpa, but I would be concerned about the 3 to 2 bang. Since it is a 2005, I would have thought it would have adjusted itself plenty by now. I would definitely have the shop look at it.

Legin · 10-11-2008

Quote:

Originally Posted by DansSlk

What about manual shifting, does it still kick.

Yes if I have left it in too high a gear and let it change down itself.

DansSlk · 10-11-2008

Yeah but thats normal, the engine's about to crap out.

If your shifting normally does it bang when it shifts?

Legin · 10-11-2008

Not sure, I will try it out .

**ProtonVehiCROSS** · 10-11-2008

My shifting seemed harsh and sluggish. The dealer gave me a software update that smoothed it out. I have a 2007 SLK55.

mtiede · 10-11-2008

Glad it wasn't something worse

Legin · 10-13-2008

Right Im struggling to be definitive here but I would say its worse in s than manual but it still does it in M. I can deffo tell in M it changes sweeter on certain shifts than others, 2-3 and 2-1 are not as good as 3-4 for instance. If I leave it in S and going down the motorway off ramp it is banging on the 3-2 ( Ithink) down change. Also if I suddenly floor it at low speed its as if the gearbox hasnt caught up, gone to neutral then banged into gear.
Any the wiser ?
ProtonVehiCROSS says software helped and thats on an 07. What year or version software update is required for my 05

DansSlk · 10-13-2008

To be honest i don't think it has a problem since it works normally once its warm, the box does tend to slam valves about when the fluid is cold.

Legin · 10-13-2008

OK thats hopefull. Would it be worth getting the latest software installed anyway as it must surely be an improvement

mtiede · 10-13-2008

Quote:

Originally Posted by DansSlk

To be honest i don't think it has a problem since it works normally once its warm, the box does tend to slam valves about when the fluid is cold.

Wow, I wouldn't call that normal for my SLK 350. Is the 55 shifting that different? Admittedly, it feels tighter when it starts up, but nothing banging or anything close to that for me. And that start up difference is gone in about a mile.

DansSlk · 10-13-2008

Quote:

Originally Posted by mtiede

Wow, I wouldn't call that normal for my SLK 350. Is the 55 shifting that different? Admittedly, it feels tighter when it starts up, but nothing banging or anything close to that for me. And that start up difference is gone in about a mile.

The 55's rough, mine's the same when its cold.

DansSlk · 10-13-2008

Quote:

Originally Posted by Legin

OK thats hopefull. Would it be worth getting the latest software installed anyway as it must surely be an improvement

Could spend a month of Sunday's messing about with it.

2005 car, warranty's gonna be out (unless its still under AUC, don't think a software upgrade would be considered warranty work) plus it's had 3 years to fail and the marginal valve fault would have shown up by now.

If it ain't broke don't fix it, it works when its warm and thats what matters.

Any faults should be evident at service time anyway.

10-11-2008	#1 (permalink)
Legin SLK World Member Join Date: Jul 2008 Vehicle: SLK55AMG Posts: 39 Country: Thanks: 1 Thanked 2 Times in 2 Posts	7G shift quality OK, I have read the threads but still cant decide if TADTS or mine is a dud. Basically it bangs hard from 3-2 when cold and occasionally 2-1, this is worse if the car has previously been driven hard and minimal if it was driven by my granny, the more carefully I drive it thru warm up the more obvious it seems. Once the tranny is fully warm then it works perfectly. So, is it adaption, valves, software or the normal poor old show ? 2005 SLK AMG 55

10-11-2008	#2 (permalink)
DansSlk Dude Join Date: Jun 2006 Location: Wales Vehicle: 05 B55S (Brabus 6.1 S) Posts: 6,752 Country: Thanks: 96 Thanked 221 Times in 173 Posts	What about manual shifting, does it still kick. __________________ One thing you will learn with German cars - If it's simple it ain't happening.

10-11-2008	#5 (permalink)
DansSlk Dude Join Date: Jun 2006 Location: Wales Vehicle: 05 B55S (Brabus 6.1 S) Posts: 6,752 Country: Thanks: 96 Thanked 221 Times in 173 Posts	Yeah but thats normal, the engine's about to crap out. If your shifting normally does it bang when it shifts? __________________ One thing you will learn with German cars - If it's simple it ain't happening.

10-13-2008	#10 (permalink)
DansSlk Dude Join Date: Jun 2006 Location: Wales Vehicle: 05 B55S (Brabus 6.1 S) Posts: 6,752 Country: Thanks: 96 Thanked 221 Times in 173 Posts	To be honest i don't think it has a problem since it works normally once its warm, the box does tend to slam valves about when the fluid is cold. __________________ One thing you will learn with German cars - If it's simple it ain't happening.

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10-11-2008	#3 (permalink)
mtiede Founding Member #7 Join Date: Jun 2006 Location: Western New York Vehicle: 2006 SLK 350 Posts: 1,642 Thanks: 100 Thanked 55 Times in 45 Posts	I don't think my SLK 350 ever "banged" from 3 to 2. And only occasionally from 2 to 1. And it hasn't done that for a long time. Maybe I drive like a grandpa, but I would be concerned about the 3 to 2 bang. Since it is a 2005, I would have thought it would have adjusted itself plenty by now. I would definitely have the shop look at it.

10-11-2008	#6 (permalink)
Legin SLK World Member Join Date: Jul 2008 Vehicle: SLK55AMG Posts: 39 Country: Thanks: 1 Thanked 2 Times in 2 Posts	Not sure, I will try it out .

10-11-2008	#7 (permalink)
ProtonVehiCROSS SLK World Member Join Date: Jul 2008 Location: Seattle, WA Vehicle: 2007 SLK55 Posts: 19 Country: Thanks: 2 Thanked 0 Times in 0 Posts	My shifting seemed harsh and sluggish. The dealer gave me a software update that smoothed it out. I have a 2007 SLK55.

10-11-2008	#8 (permalink)
mtiede Founding Member #7 Join Date: Jun 2006 Location: Western New York Vehicle: 2006 SLK 350 Posts: 1,642 Thanks: 100 Thanked 55 Times in 45 Posts	Glad it wasn't something worse

10-13-2008	#9 (permalink)
Legin SLK World Member Join Date: Jul 2008 Vehicle: SLK55AMG Posts: 39 Country: Thanks: 1 Thanked 2 Times in 2 Posts	Right Im struggling to be definitive here but I would say its worse in s than manual but it still does it in M. I can deffo tell in M it changes sweeter on certain shifts than others, 2-3 and 2-1 are not as good as 3-4 for instance. If I leave it in S and going down the motorway off ramp it is banging on the 3-2 ( Ithink) down change. Also if I suddenly floor it at low speed its as if the gearbox hasnt caught up, gone to neutral then banged into gear. Any the wiser ? ProtonVehiCROSS says software helped and thats on an 07. What year or version software update is required for my 05

10-13-2008	#11 (permalink)
Legin SLK World Member Join Date: Jul 2008 Vehicle: SLK55AMG Posts: 39 Country: Thanks: 1 Thanked 2 Times in 2 Posts	OK thats hopefull. Would it be worth getting the latest software installed anyway as it must surely be an improvement

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