DSG Fault on GTI

[pologti18t]

A good question. When I thought about it, I have been using left foot braking.

Have just been around the block (where the problem occurs on the hill ) about 10 times, using right foot braking and in those 10 runs it has been going normally. Will give it another try during the week.

When I told my wife about using left foot braking, she said "what difference would that make". Perhaps you can help.

There is an interlock between the brake and the throttle. If you have the foot brake applied and you press the throttle at the same time the ECU will override the throttle request.

[gavs]

Ummmm, so correct me if i'm wrong, but to replicate the sequence of events I would do this:

Come to a stop on a hill.
Hold car stopped with foot on brake pedal.
Attempt to take off again by taking foot off brake and putting onto accelerator.
Car hessitates, seems to be stuck in idle and doesn't go anywhere briefly.
Car then takes of as normal.

If this is what is happening, there is absolutely no fault in your gearbox or software, this is the hill-hold feature that stops you rolling into the car behind you as the gearbox engages the clutch.

Remember that this is 2 manual gearboxs fundamentally and it is controlled by a computer. The computer has to do exactly what you would (when in "D" especially) by taking the car from neutral, putting it in gear and taking off. If you don't touch the accelerator pedal, you will roll back as the car will automatically release the brakes after a small while, there's nothing fancy for the hill hold, the car just applies the brakes to hold you in place instead of rolling back.

[Lams]

mine doesn't do it frequently but this is what I notice:
- car is almost but not stationary
- has done it in both D / manual mode (I usually fllick it down to D at those speed so it doesn't kick down to 1st)
- car would've kicked down to 1st gear
- no throttle response and clutch is usually engaged (feels like idle)

a quick flick to N and back to D would usually get it going again

[ATYPIC]

If you don't touch the accelerator pedal, you will roll back as the car will automatically release the brakes after a small while, there's nothing fancy for the hill hold, the car just applies the brakes to hold you in place instead of rolling back.

The underground car park at work has a 30 degree ascend to get out but I have to stop half way up the ramp in order to hit the 'open gate' button. After putting my foot on the brake, I wait for the gate to open (slowly) and then release the brake to accelerate but the dsg has absolutely disengaged itself and I roll completely back to the bottom of the car park.

It's bloody frightening because the first time it happened I didn't even look to see if there was anyone behind me.

[Corey_R]

Couldn't find the brake pedal or handbrake?

[ATYPIC]

Couldn't find the brake pedal or handbrake?

Geeeez you are funny!

[Mr Codger]

Thanks for that. It looks like left foot braking with the DSG in the situation described is a no no.

[Mr Codger]

it depends what you mean by brielfly. The problem is/was that I am stuck there with the car not going out of idle and it is worse when you are on a hill. Have taken your comments on board and will report again if there is any further issue. At present I am inclined to the view that the problem has arisen because of left foot braking. (see post from VW Fanatic).

[Corey_R]

you can left foot brake, but you've got to be really conscious not to "rest" your foot on the brake (which a lot of people who lfb do). Any slight constant pressure is enough to confuse the brake override safety features...

[pologti18t]

The underground car park at work has a 30 degree ascend to get out but I have to stop half way up the ramp in order to hit the 'open gate' button. After putting my foot on the brake, I wait for the gate to open (slowly) and then release the brake to accelerate but the dsg has absolutely disengaged itself and I roll completely back to the bottom of the car park.

You will have to modify your driving behaviour. It's not the car's fault.
The car has a "hill holder". So you don't have to maintain pressure on the brake with your left foot while you apply throttle with your right foot.