There is a road which I drive along which is very steep in short stretches (up to 50 degrees) and although there is no need from a safety point of  view the gearbox changes down to third and even second gear to try and limit the speed to about 25 mph. This means that unless you apply the breaks to limit the speed to 25 mph the engine is revving  at up to 4000 rpm which is not desirable. When you know what will happen on these sort of gradients you can you use your breaks to stop the stress on the gearbox and engine but when you experience this condition for the first time you wonder what the hell is going on. This seems like it might be connected to the off road system  but should it happen when driving on 'A' roads. Does anyone know how stop this happening on normal road driving.

Thanks in advance for any advice. 👍

If your talking about the gearbox changing down gears when going downhill, it usually only does this if you have applied the brakes and it changes down to provide engine braking. If you don’t touch he the brakes it won’t change down, if your concerned it changed down to many as my gears you can always flip it to manual or apply some gas and force it to change up. Or if you have the freewheeling option use that.

Edited 29 September, 20196 yr by Kenny R

Might be an idea to say what engine the Karoq has, 1.0, 1.5 or 2.0 TSI or a diesel,

and i take it you are talking about a DSG.

& with Haldex a bigger engine.

 

http://briskoda.net/forums/topic/455294-dsg-behaviour-on-steep-downhills

 

Edited 29 September, 20196 yr by Roottootemoot

18 minutes ago, skodakm27 said:

There is a road which I drive along which is very steep in short stretches (up to 50 degrees) and although there is no need from a safety point of  view the gearbox changes down to third and even second gear to try and limit the speed to about 25 mph. This means that unless you apply the breaks to limit the speed to 25 mph the engine is revving  at up to 4000 rpm which is not desirable. When you know what will happen on these sort of gradients you can you use your breaks to stop the stress on the gearbox and engine but when you experience this condition for the first time you wonder what the hell is going on. This seems like it might be connected to the off road system  but should it happen when driving on 'A' roads. Does anyone know how stop this happening on normal road driving.

Thanks in advance for any advice. 👍

I don’t know if it’s worse than my Superb TSI but I find this effect to be good. I regularly drive over a scottish mountain called the Lecht, and one side there are several tight bends and when going down hill the gearbox stays in a fairly low gear. Which is good! after the last bend there is a steep downhill straight where speed can be picked back up to 60 so a brief dab on the throttle sees it change up to 6th and the car pick up speed with the throttle closed.

 

As has been mentioned, if you don’t like what it is doing there is always the option of manually selecting the gear you want.

Thank goodness for a bit of engine braking when down down the south side.

Going north not needed.

Edited 29 September, 20196 yr by Roottootemoot

My previous car - Yeti 1.2 SE DSG used to change down fairly readily on downhills.  Now my Karoq 1.0 SE Technology DSG prefers hanging onto a higher gear, going both downhill and also uphill, when it almost sounds like it is labouring.  Taking this message somewhat off topic, this slight thrum at 1500 - 2000 rpm is in fact a characteristic 3 cyl noise.  Even though it's only a low level noise, when going uphill, I prefer to switch to Sport mode, which generally takes revs beyond 2000, without seemingly much affecting economy.

The latest tsi engines are very free reving and engine braking is quite weak.  There is an incline detector which is programmed to change to a lower gear.   But first time you go downhill and revs shoot up catches you out.

 

You can either manually change gear (if don’t have flappy paddles, flick gearlever to side then forward/back changes gear), or trick it by coming off brakes or blipping throttle.

 

If you do have flappy paddles that is changing manually obviously, just maybe both hands on the wheel.

I have flappy paddles and choose the shifter to my left side in a right hand drive car.

Edited 1 October, 20196 yr by Roottootemoot

I have the same problem with my Karoq 1.5 SEL DSG and it was annoying the hell out of me then I found the solution. Even though you are in auto you can change up one or two gears just by flipping the right hand paddle. I do this all the time now and it saves having all those revs on. It doesn't matter which drive mode you are in it still works. You will notice the 'D' change to 'M' for a short while and then return to 'D' . It's very smooth and makes a hell of a difference.

50°? As in 5° more than 45°?  Is that correct?

2 hours ago, SC03OTT said:

50°? As in 5° more than 45°?  Is that correct?

I'd guess that's a typo. Even 50% would mean an old "1 in 2" and I've never encountered anything steeper than 1 in 4 (25%).

 

Oh and I'd rather have engine braking than overheated wheel brakes.

I would check that the suspension arm sensors and tilt sensors have no errors, i had this on an older DSG and it was related to the DSG changing incorrectly on hills.  It was an intemittent signal from one sensor causing the car to not know the front/rear suspension angles correctly.