Gearbox software - Page 2

MaDProFF · Oct 12th, 2018, 00:33

My T8 does not lag in any mode and did not before Polestar.

The acceleration is linear to how hard I press on the accelerator, of course in sport mode it will accelerate quicker, it has not changed at all since new up to the 6k miles it has done now.

Lag is when you put your foot on the accelerator and there is a delay in the time before the car moves and the harder you press throttle the worse it is, then all of a sudden it twigs you want to move off quickly and flies off.

I agree it is dangerous, and as I said before on my AMG GLA 45 it was awful in normal mode, and put me in some close situations, if it was put in sport sport + and race mode it was a lot quicker, but ticked over quicker.

MaDProFF · Oct 12th, 2018, 00:35

Quote:

Originally Posted by macklij

I have Polestar but haven't yet played with the car much. I was under the impression that Polestar only does it's stuff in Dynamic mode. Is that true.

I have also read that Polestar stiffens the air suspension, but can't find any reference to this in the Polestar booklet that came with it (just engine and gearbox map mentioned). Is that true?

Thanks

I am sure it varies from car model to model, as for XC60 T8 it changes many things in all modes, including the air suspension, personally I think it is worth the money if you intend to keep the car a while.

Deman77 · Oct 12th, 2018, 08:42

its the same gearbox - on more tourquey engines all cars have it.
Anyone who says they don’t probably just has smooth style of throttle application like I described. It’s not a turbo lag it’s a hesitation with engaging lower gear and power application.basically too much torque to handle and car throttles it very ungracefully.
It’s easy to bring up. Slow down into t junction or roundabout without fully stopping and floor it. You will have a momentary delay and then it will take off. I guarantee it comes up in every D5, t6 and t8 and people reported so much over the years.
Polestar doesn’t fix it. It’s just the way it works. The only way to remove it is to modulate throttle input and know the most you can get away with without causing it to do this.

bobby2000 · Oct 12th, 2018, 11:29

Quote:

Originally Posted by macklij

I have Polestar but haven't yet played with the car much. I was under the impression that Polestar only does it's stuff in Dynamic mode. Is that true.

I have also read that Polestar stiffens the air suspension, but can't find any reference to this in the Polestar booklet that came with it (just engine and gearbox map mentioned). Is that true?

Thanks

I think you probably get the most benefits in Dynamic mode, but I also think it is beneficial in comfort mode as well.
I've had mine Polestar-ed for nearly a year now and have got used to all the benefits of Polestar, I guess! I would need to drive one without to notice the difference.
Can't say I've noticed any changes in the air suspension.

Haldex · Oct 12th, 2018, 16:33

I seem to be one of a few people who's really happy with the autobox behavior

I suppose varying your driving style messes up the "learning" - I have the car in "dynamic" literally all the time- and I have yet to experience the doom of hesitation..

cassell · Oct 12th, 2018, 17:01

Quote:

Originally Posted by Haldex

I seem to be one of a few people who's really happy with the autobox behavior

I suppose varying your driving style messes up the "learning" - I have the car in "dynamic" literally all the time- and I have yet to experience the doom of hesitation..

+1, I totally agree!

MaDProFF · Oct 12th, 2018, 18:58

I do not have any issues with the gearbox, does it job really well in all aspects of driving.

herbert912 · Oct 12th, 2018, 20:21

I'm very happy with the gearbox in our XC60 T5 as well. It did take me a little time to get used to it but I've not noticed any hesitation issues (always have it in dynamic). Not quite as slick as the box in our 530D but close.

Archdog · Oct 12th, 2018, 21:02

I have a D4 and agree that the 'lag' is much less of an issue in Dynamic mode. But I would like the option of being able to utilise stop/start, and not have a clattery tickeover, i.e. use Comfort mode without the penalty of this behaviour.

GTA SOL · Oct 12th, 2018, 21:35

Quote:

Originally Posted by Archdog

I have a D4 and agree that the 'lag' is much less of an issue in Dynamic mode. But I would like the option of being able to utilise stop/start, and not have a clattery tickeover, i.e. use Comfort mode without the penalty of this behaviour.

Could you not set up an ‘Individual’ driving profile and select ‘dynamic’ for the engine etc but keep the stop/start? I’ve not really played about with it myself so apologies if I’ve got this wrong.

Oct 12th, 2018, 08:42	#13
Deman77 Master Member Last Online: Apr 1st, 2022 14:14 Join Date: Jan 2016 Location: Greater London	its the same gearbox - on more tourquey engines all cars have it. Anyone who says they don’t probably just has smooth style of throttle application like I described. It’s not a turbo lag it’s a hesitation with engaging lower gear and power application.basically too much torque to handle and car throttles it very ungracefully. It’s easy to bring up. Slow down into t junction or roundabout without fully stopping and floor it. You will have a momentary delay and then it will take off. I guarantee it comes up in every D5, t6 and t8 and people reported so much over the years. Polestar doesn’t fix it. It’s just the way it works. The only way to remove it is to modulate throttle input and know the most you can get away with without causing it to do this. __________________ XC90 D5 P* MY16 BMW i3

Oct 12th, 2018, 00:33	#11
MaDProFF Master Member Last Online: Dec 10th, 2019 17:40 Join Date: May 2018 Location: London	My T8 does not lag in any mode and did not before Polestar. The acceleration is linear to how hard I press on the accelerator, of course in sport mode it will accelerate quicker, it has not changed at all since new up to the 6k miles it has done now. Lag is when you put your foot on the accelerator and there is a delay in the time before the car moves and the harder you press throttle the worse it is, then all of a sudden it twigs you want to move off quickly and flies off. I agree it is dangerous, and as I said before on my AMG GLA 45 it was awful in normal mode, and put me in some close situations, if it was put in sport sport + and race mode it was a lot quicker, but ticked over quicker.

Oct 12th, 2018, 16:33	#15
Haldex Premier Member Last Online: Dec 18th, 2023 13:17 Join Date: Mar 2018 Location: Paris	I seem to be one of a few people who's really happy with the autobox behavior I suppose varying your driving style messes up the "learning" - I have the car in "dynamic" literally all the time- and I have yet to experience the doom of hesitation..

Oct 12th, 2018, 18:58	#17
MaDProFF Master Member Last Online: Dec 10th, 2019 17:40 Join Date: May 2018 Location: London	I do not have any issues with the gearbox, does it job really well in all aspects of driving.

Oct 12th, 2018, 20:21	#18
herbert912 New Member Last Online: Feb 4th, 2023 23:11 Join Date: Feb 2018 Location: Fleet	I'm very happy with the gearbox in our XC60 T5 as well. It did take me a little time to get used to it but I've not noticed any hesitation issues (always have it in dynamic). Not quite as slick as the box in our 530D but close.

Oct 12th, 2018, 21:02	#19
Archdog New Member Last Online: Dec 5th, 2021 21:13 Join Date: Nov 2017 Location: Birmingham	I have a D4 and agree that the 'lag' is much less of an issue in Dynamic mode. But I would like the option of being able to utilise stop/start, and not have a clattery tickeover, i.e. use Comfort mode without the penalty of this behaviour.

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