Hello people,

I wondered if anybody else has experienced a sensation of braking whilst travelling downhill or on an undulating road. It feels kind of like the car is automatically dabbing the brakes, or a touch of engine braking. However when you're doing 60mph on an A road in 6th gear, engine braking isn't a likely cause.

My car is a 2010 vRS 2.0 cr TDI. It's been into the dealer who referred it to Skoda. Skoda came back with the answer that it's a "feature" of the car, in order to keep the car from accelerating unexpectedly downhill, however I'm not too inclined to believe this and it feels quite intrusive.

Does the Scout have some sort of hill descent setting that may have been accidentally activated on my car?

I'd be grateful if anyone has an idea, or solution.

Thanks,

Damian

My Superb does this, for example when the road dips down quite quickly.

There's another thread about this whole phenomenon somewhere on here - can't remember where - which IIRC puts the blame on something sensing the car going 'airborne' and stopping the fuel pump.

Mine does this and and my previous car, ibiza bocanegra also did this. It happens with v light braking of the footbrake when going downhill.. Also both these cars were DSG. You didn't say if yours was an auto?

Only real issue I have with my car, it's a common fault and there doesn't seem to be a fix so I've just learned to live with it.

http://www.briskoda.net/forums/topic/150025-negative-g/

I'm on my 3rd Diesel CR VRS and all 3 have done this. Usually just over the top of a long crest as you start to descend. Put it down to some sort of safety fuel shut off. Assumed it was built in.

I must admit I've just got used to it over the years & don't think about it now, although I would still switch it off if I could.

Edited 16 November, 201213 yr by A6TDH

Even my 1.6tdi does this, more noticeable at lower speeds as if the car brakes on its own.

I also find that this happens at low RPM, or at least most noticeable

Even my 1.6tdi does this, more noticeable at lower speeds as if the car brakes on its own.

I also find that this happens at low RPM, or at least most noticeable

It was quite a shock the first time to be going round a bend foot to the floor and suddenly loose power on an incline!

It's nothing to do with traction control I'm in agreement it's more to do with the fuel pump..

Ive never experienced this in my Octy, only time recently is when i had CC retro fitted and when it attempts to slow the car down on a hill, which never really works.

Im off out to go try it though!

Mine does this and and my previous car, ibiza bocanegra also did this. It happens with v light braking of the footbrake when going downhill.. Also both these cars were DSG. You didn't say if yours was an auto?

Octy cuts the throttle when you touch the brake so you can't left foot brake or dry the brakes after going through water.

Ive never experienced this in my Octy, only time recently is when i had CC retro fitted and when it attempts to slow the car down on a hill, which never really works.

Im off out to go try it though!

It seems to just be something just the CR's do... mine does it too sometimes

I felt my pd170 do this the other day, slowing from 30mph in 3rd, slight downhill incline and it felt like the dpf was going through a regen but tested by clutching it and revs dropped to 750 so wasnt dpf.

Thanks for everybody's feedback on this, It's good to know that other VAG cars are doing the same thing. It does get on my nerves a bit as it feels like it's interfering with the drive and overall control of the car.

It doesn't happen when I'm touching the brake, and turning TCS off doesn't cure it either. As for cutting fueling down an incline, it feels stronger & more immediate than that, if feels more like a very light dab on the brakes or engine braking, but in 6th gear at 2k rpm, there's no engine braking to be had.

It's perhaps just one of those things, but if I find out anything different, or get a definitive answer as to what's happening, I'll let you all know.

Thanks again,

Damian

Guys, come on. It's a feature and it only happens when you use cruise control. It is trying to maintain the given speed. Look at your dash you see DSG shifting gears in attempt to engine break. Switch of cruise control and it will stop doing that.

Octy cuts the throttle when you touch the brake so you can't left foot brake or dry the brakes after going through water.

Based on using 312mm discs, and 225/50R17 tyres - How often do you drive through water over 6" deep to get the discs actually even partially immersed?

Sorry 'reverse'... Mine does it when cresting or anytime the car senses negative G... Even when the cruise control is off. It's almost certainly a safety feature, in the event of a severe accident (roll) it'll cut the fuel. I just live with it. I do miss left foot braking though... could do with switching the throttle cut feature off!

Ken, I hit a flood/ford on the Gleniffer Braes which sent the water over the bonnet and onto the windscreen... It was pitch black in driving rain. But truthfully, with allround discs this isn't really an issue... Now brake drums are different matter entirely.

Ken, I hit a flood/ford on the Gleniffer Braes which sent the water over the bonnet and onto the windscreen... It was pitch black in driving rain. But truthfully, with allround discs this isn't really an issue... Now brake drums are different matter entirely.

I take it that was somewhere between the viewpoint and the end of that near-straight section past Peesweep?

Anyway, you can do that with an inch or 2 of standing water, but you realise my serious point; water mostly just runs back off dics unless you actively submerge them (and maybe even then), so "drying out the brakes" isn't actually necessary.

I drive in excess of 20k miles a year in my 07/10 Vrs diesel and I to have this issue but its very strange that it only happens on one particular road I use.

Guys, come on. It's a feature and it only happens when you use cruise control. It is trying to maintain the given speed. Look at your dash you see DSG shifting gears in attempt to engine break. Switch of cruise control and it will stop doing that.

sorry mate, this is not true.

Guys, come on. It's a feature and it only happens when you use cruise control. It is trying to maintain the given speed. Look at your dash you see DSG shifting gears in attempt to engine break. Switch of cruise control and it will stop doing that.

Mine's a manual five speed 1.6 CR and it does exactly what others have said and I'm not using the cruise control at the time. I never noticed it on the previous PD engines. It's most noticable on a road where it suddenly dips.

Why would the DSG want to break an engine? :think:

Edited 21 November, 201213 yr by moley

reverse, I agree that you are wrong, mine is a 2008 VRS CR TDI and it does it as you go over the brow of a hill, I guess its away of stopping the car from running away downhill.

Alright I stand corrected. I have not noticed it doing it when not using cruise. Then again I haven't really watched out for it. WIll test as I live in a rather non-flat place with a lot of hills to clib/decline daily. Most sure DSG doesn't change gears without the cruise control being active and car just starts to "run away" as said. For example I have this extremely long and painful decline in 60km/h zone where with cruise DSG goes to gear 4 and speed stays constant and without cruise it stays in 6th and speed starts to creep. The fuel cut going downhill is, naturally, normal for all modern engines. Thank you for correcting me.

My car has a manual gearbox, so I'll join the gang giving Reverse a kicking (just kidding!) and also add the question "If it's a feature, surely it would be mentioned in the manual."

It didn't happen in my PD vRS, and does in the CR vRS, it did it pre-map and does it post map. It happens with stability control on, and it happens when it's off.

Does it happen when coasting downhill? I'm not sure, but I'll try.

My car has a manual gearbox, so DSG certainly isn't the issue, so I'll ask the question "If it's a feature, surely it would be mentioned in the manual?"

It didn't happen in my PD vRS, and does in the CR vRS, it did it pre-map and does it post map. It happens with stability control on, and it happens when it's off.

Does it happen when coasting downhill, rather than applying pressure to the accelerator? I'm not sure, but I'll try.

I started the Negative 'g' thread listed above a few years ago, not long after getting my CR vRS. My PD vRS never did it, and my CR vRS continues to do it on the same bit of road every time I drive it. I have also noticed the effect on a couple of other roads.

The only way round it appears to be to accelerate as you go over the crest in the road, as this seems to stop it happening. This is fine on the road that I travel down most days as I know where it is going to happen, and can drive accordingly.

It happens infrequently enough in normal use for it not to be a problem, and I have ended up accepting it.

I too have this problem. While I accept that it may be an issue that others are prepared to live with but, that is dependent on your circumstances. I have to drive 5 miles across an undulating road to get to work so this is a daily occurrence for me on app 30% of the hills on the road. Far from being something i could get used to i would go further and say it is a safety hazard.

There have been a couple of instances where I have come over the crest of a hill in preparation of overtaking a car at the other side only to be met with f*ck all. The first time this happened I had already started to move out ready to hit the gas.

I aint too young and I have had a consdierable number of cars and this is the first time I have experienced such a 'feature' in any car. its crap.

I went back to Skoda only to be told they all do that and I am not prepared to accept that this is something that we have to live with.

I will post you back any information that i get from Skoda.