On 15/05/2024 at 23:42, 26DIPP said:

On a 2023 L&K TDI the car coasts all the time. I wished I could easily code it out. I prefer a degree of engine breaking.On my last S2 I did coast  by going into N.

 

My 2023 also has coasting in all modes. 

I find it very annoying as 90% of the time the car accelerates towards the car Infront or above the speed limit.

 

It can be coding out...

There was another thread where it was discussed for the 2023 models & seemed straight forward to do

On 08/05/2024 at 22:23, JR RS said:

I personally hate Coasting because there is no speed control and i end up with a runaway car that is over speeding!!

You only have to touch the brake and engine braking is restored. 

I like the feature, unfortunately shortly after 'coasting' I have to keep the speed in check and this disables it ... pity.

I'd like the system to react differently. I do as above indicated but numbskull ... paddle down or gear lever, or brakes.

I'd like coasting to be unaffected if I control speed by braking, but to 'stand down' if I use gear/paddle, this way showing I intend to resume manual control. This way I could also manage when I want to prolong coasting ...

Who knows, maybe future versions will allow for this to be setup in a more personalized manner and a more seamless integration.

 

Right now for example I love that I can go 'manual' (say forcing a downshift to keep RPMs up) and shortly after DSG resumes auto. Brilliant! 😊

4 hours ago, numskull said:

You only have to touch the brake and engine braking is restored. 

 

wat @leolito said above......

Or if someone is behind or several someones, touch the accelerator but not as much as to accelerate and you have drive again and in gear. 

4 hours ago, JR RS said:

 

wat @leolito said above......

Right. And then one gives a tiny blip to the loud pedal and you’re coasting again. 
EDIT - yep, zaklee what ^^ said!

Edited 20 May, 20242 yr by numskull

Actually this is an interesting question ... because sometimes I am "waiting" coasting to come, but it does not. And sometimes when I cut it 'short', it does not resume when I would want to ... which makes me wonder ... is any technical literature available from Skoda describing systems' operation in detail?

As an example, over the years (many) I came to appreciate the quality and precision of the Land-Rover technical information. For every vehicle I've possessed (yeah I am caught and drawn to the Green Oval from the times it was actually Black ☺️), systems are described with inputs, outputs, triggers and logic of operation ... marvelous. Even esoteric ones, like my current P38's EAS 😝

I noticed sometimes the Coasting won't activate when in ECO, when the car is doing a DPF regen. 

I'm still debating about enabling it via VCDS in Normal D mode.

I am out for work and on a long journey (again, loving it) and on the long hilly sections without much traffic I had the chance to play at length with the controls to understand better the coasting ...

The FL model will 'coast' in Eco, Comfort or Normal, will not do in Sport. The difference is the triggering, in Eco it is very aggressive, it takes very little slope or "no-load" on the engine to switch to coasting, whereas in Comfort or Normal is more relaxed (even more in Normal) to make it happen.

When reapplying gas and then releasing, again in Eco jumps nearly immediately to coasting, where in the other two modes will be less engaging.

You have to release the gas lightly to engage it in Normal and Comfort (very light Normal!), wheres in Eco goes in coasting regardless of how you loose the skinny pedal. This explains why driving "normally" in Normal you rarely see it ....

 

Sometimes, when you enter a section fitting for coasting, but the car delays/lingers going into it, it can be coaxed by a light tap on the gas. Do not ask me the logic behind it, but I've done several times and it works almost every time, also in Normal/Comfort.

All this works also regardless of whether the DSG (not the car mode) is in D or S mode.

 

I have not seen any magical improvement in the fuel economy, of course 😝

I would not expect much anyway, as I guess while idling there is a minimum of running, as opposed to the cut-off when the gearbox is "slowing" the car ... true, a FSI on idle must be very economical, but...

 

Nevertheless it is an interesting feature, I was looking forward to coast as much as I could to learn to work with it, and around it.

I still would prefer to be able to tap the brakes/brake without deactivating it (I am not a brake lover, rather use the drivetrain to slow down the vehicle, that's how I got used to drive).

Obviously ACC cannot be used, but it could if brake usage was allowed with coasting.

 

Will post elsewhere other interesting considerations about long-hauling on the 280 😊

I'm going to have to try to activate this eco / coasting in Normal Drive 😂

@leolito if you tap the brakes and you are in drive it goes back into 'Coasting' if you are still going as you were before taping the brake pedal so hardly an issue is it.

There is the gear showing but drive actually cut and ready for action if the accelerator is touched.  Or coasting continues if not.

2021 model and coasting in everything but sport mode (or if you knock the gearbox into Sport). My guess is if it has the roundel on the back it’s ECO only. 

And yes agree ECO is more likely to coast than normal or comfort

11 hours ago, Ootohere said:

if you tap the brakes and you are in drive it goes back into 'Coasting' if you are still going as you were before taping the brake pedal so hardly an issue is it.

This is correct and I've noticed and used it like that, say you are coasting but the speed increases a bit too much, tap on the brakes, gearbox comes back in, then it continues with the coasting... what I was trying to say is that, I hope some future of the system will be able to recognize a 'light tap' from a 'braking exercise' using speed differential to assess if to remain in coasting even with brakes depressed, or re-engage the gearbox, and I believe it will be so, someday.

 

One thing also related to this, I've noticed the re-engagement of the coasting is right away in Eco, but not so in Comfort, so sometimes you wish to use Eco for the coasting, Sport for the DSG, Comfort for the DCC ... must play with the Individual setting

Spoiler

😃

 

They can on some VW group models.  GPS tells when the engine can be off, or cylinder deactivation etc, recharge a light hybrid etc.  But these are tried and used elsewhere and eventually Skoda gets or not. 

Coasting can't be just coded out with obd11 or vcds, you have to alter the tcu software. Although it's actually a simple bit switch and can be enabled in any mode, even in Sport.

On 30/05/2024 at 10:53, CJXA said:

Coasting can't be just coded out with obd11 or vcds, you have to alter the tcu software. Although it's actually a simple bit switch and can be enabled in any mode, even in Sport.

 

There is this thread for the facelift models which seems to work with just 1 (or 2 coding changes).

I haven't done it yet but seems to have positive comments that it worked for many people:

 

https://www.briskoda.net/forums/topic/513598-disabling-coasting-function-in-facelift-dsg-cars/#comment-5757706

I've attempted several times to get my FL to coast in Normal D mode, no luck. I'm thinking it might only be the models without Drive select that so this?

I wouldn't know, as I have only one car and spec to try it 🤪

But I did notice in Normal required much more "coaxing" to get into coasting.

Another thing I forgot to mention I've noticed, and also applicable to those with drive modes: say you enter a stretch of road you want/can coast, but the car would not get into it, switch drive mode to 'Eco' and it immediately goes into coasting, then if you switch back to 'Comfort' or 'Normal', without touching anything else, it will stay coasting until you depress the brake or touch the DSG.

Yes, it is fairly distracting, but as I mentioned, it was a long (boring) drive ... 🙃

Strange logic.

I am wondering to disable it next week I have again another long one, and see if the driving results are more pleasant when driving in a 'conventional' manner...

On 31/05/2024 at 17:30, Gabbo said:

 

There is this thread for the facelift models which seems to work with just 1 (or 2 coding changes).

I haven't done it yet but seems to have positive comments that it worked for many people:

 

https://www.briskoda.net/forums/topic/513598-disabling-coasting-function-in-facelift-dsg-cars/#comment-5757706

 

Haven't tried this also, but after a brief googling it seems to be a non 100% solution as some people are reporting coasting to remain active. This would not surprise me, vag is constantly removing all possible user interactions with emissions related systems. 

I've definitely seen this coding option in pre fl superbs. This morning hooked up obd11 to my IV octavia, unfortunately very few gateway coding bits were labeled, none of which were related to coasting, have to check it with vcds sometime later.

 

Although, as i told before, coasting for 100% can be enabled or disabled in the TCU software for any mode.

On the return leg of my last trip (1500km), I've used Sport most of the time, thus with no coasting. I've noticed the "live" fuel indicator (which I suspect is displaying/mirroring throttle body position) would go to 0 when downhill using the cut-off (no brakes, no gas), whereas when done in 'Eco' with coasting would read 0.5/0.7 L/100km, which is more or less fuel consumption at idle.

So unless some other VAG-trick is at play, from a fuel consumption economy point of view, would make more sense to decelerate using engine cut-off than not disengaging transmission and "coast".

Not that I have seen any magical reduction of consumption anyway, so we are splitting hairs here 😝

I’ve never been able to coax my 2021 280 into ‘coasting’ mode no matter what settings I use - not that I want or need it - just curious.

49 minutes ago, leolito said:

Not that I have seen any magical reduction of consumption anyway, so we are splitting hairs here 

 

On a flat road, the difference between coasting vs fuel cutoff can be seen in the deceleration rate. 

You will decelerate faster with the gear engaged because of the friction & losses in the transmission, thus covering less distance before youd need get back on the gas pedal.

 

Which one is if better depends on the gradient of the road up or down & you are in this mode for so few kms compared to overall driving you will never notice a difference.

 

My guess was coasting was a bit of a gimmick introduced by manufacturers to make people think the car is getting better fuel efficiency. 

A bit like "regenerative braking" using the alternator. 

Sounds fancy, but delivers nothing except in lab conditions.

Agree on all points.

Talking about regen braking, I often happen to use some hybrid or another, and I do wish I had some of that trickery on the 280 ... oh well, it will be for the next time, in many years or so 😁

On 09/06/2024 at 16:15, Gabbo said:

 

On a flat road, the difference between coasting vs fuel cutoff can be seen in the deceleration rate. 

You will decelerate faster with the gear engaged because of the friction & losses in the transmission, thus covering less distance before youd need get back on the gas pedal.

 

Which one is if better depends on the gradient of the road up or down & you are in this mode for so few kms compared to overall driving you will never notice a difference.

 

My guess was coasting was a bit of a gimmick introduced by manufacturers to make people think the car is getting better fuel efficiency. 

A bit like "regenerative braking" using the alternator. 

Sounds fancy, but delivers nothing except in lab conditions.

 

I'm not absolutely convinced its completely nothing - it might not be the absolute panacea, but I do think there are specific conditions where its a benefit to the in-gear rolling with no fuel. I find a rolling road (a road with rolling hills, not the power-measurement device), can be ideal but you do need to get the timing right with the throttle pedal so you can maintain speed. Thinking of a certain section on the A21 from Tunbridge Wells down towards Battle, I'd definitely not make the gradients while still in gear and need to use throttle, whereas with coasting the car rolls easier and maintains sufficient to roll along. Agree it would need scientific measurement and consistent runs to work out whether its a benefit (ie a lab...)

 

@Gabbo  What messes up your theory is that the Test Conditions with the NEDC and then WLTP does favour 'Coasting'  and the cheats that VW had with DSG,s / S-tronics and cars during and after the Emissions Scandal. 

 

But then using Coasting there are people that can get more range from a tank of fuel than when not using it, and over and over again when comparing the same journeys in different seasons.

 

If people can not do that, or be bothered to check if they use less fuel, that does not mean that others do not do it and know they can use less fuel, 

maybe even emit less emissions. 

 

Same with Stop / Start, or ACT / COD, in the real world 'many a mickle makes a muckle'.  

Edited 11 June, 20241 yr by Ootohere