The DSG, is indeed as mentioned, very very good.

I have too noticed it dropping an extra gear when it decides to change down when you manually input a gear drop yourself.

So yeah, sometimes have approached roundabouts and it drops into 1st as opposed to 2nd, makes a load of revs and can be embarrassing.

As said, easily worked around, just sometimes catches you out

had this with 2ND gear today. slowing down to overtake a parked lorry. became clear so pulled into the on coming traffics lane put me foot down and it started juddering. luckily i got me hazards on and the oncoming lorry could brake. took me a good 15 seconds to get it going again. had to stop dead on the wrong side of the road into n back into d 2 times before it decided to engage first. il definately be taking it in in the next couple of days to see what the dealer says. its just dam right dangerous. i cant see it being to long before someone has a major accident because of this.

had this with 2ND gear today. slowing down to overtake a parked lorry. became clear so pulled into the on coming traffics lane put me foot down and it started juddering. luckily i got me hazards on and the oncoming lorry could brake. took me a good 15 seconds to get it going again. had to stop dead on the wrong side of the road into n back into d 2 times before it decided to engage first. il definately be taking it in in the next couple of days to see what the dealer says. its just dam right dangerous. i cant see it being to long before someone has a major accident because of this.

Well let us know what the dealer says. After all, the fact that it's happened to a lot of people doesn't necessarily mean that its the way it should be. Maybe there is a bug in the DSG software which needs fixing...

The thing to remember is the DSG box is rule based so you can learn to use it based on the logic it uses. No matter what mode the system is in if you have your foot on the brake and the car is slowing down all logic would tell the system to expect the engine revs to be falling and the need to change down a cog. For overtaking or instant power you can use the kickdown function when in drive or put the system into S mode where it will keep the revs in the power band of the engine for longer. If you choose tiptronic mode then the logic is set more for engine protection rather than having to decide everything about when to change, so the extremes of the rev range (too low or too high) combined with which pedal your foot is on. Foot on brake and revs about to stall engine would equal time to change down. Foot on accelerator and revs in the redline equals time to change up.

The thing to remember is the DSG box is rule based so you can learn to use it based on the logic it uses. No matter what mode the system is in if you have your foot on the brake and the car is slowing down all logic would tell the system to expect the engine revs to be falling and the need to change down a cog. For overtaking or instant power you can use the kickdown function when in drive or put the system into S mode where it will keep the revs in the power band of the engine for longer. If you choose tiptronic mode then the logic is set more for engine protection rather than having to decide everything about when to change, so the extremes of the rev range (too low or too high) combined with which pedal your foot is on. Foot on brake and revs about to stall engine would equal time to change down. Foot on accelerator and revs in the redline equals time to change up.

I think we agree to all of this. It is not a problem of it not doing always what you're thinking, you're the one with the eyes on the road anyways. So some occassional wrong shifts, when circulation does not go as predicted from the DSG don't present an issue, at least for me.

What is the issue however, is this inexplicable "idling" and death of the accelerator, under these (as rare as they may be) circumstances.

I do know how to use the box. I've got enough experience with sequential/tiptonic boxes to understand how they work.

The problem occurs when it doesn't work as it should. I really do love this type of gear box so I'm not hear to slag it off just think that as there are a growing number with this problem and its something that needs to be addressed before it causes a accident.

Say your pulling up to a roundabout with a car behind you. He expects you to pull away onto the now clear roundabout so doesn't really brake and smacks you straight up the a%#e as you can't accelerate away. His insurance will pay but is it really his fault.

If it was an accelerater problem giving intermittent problems the cars would most certainly been recalled by now.

Is this only in manual mode?

Is this only in manual mode?

i have had mine since the end of May and I have not had any probles like this, i have mine in D all the time and never use manual at all. I have no problems at roundabouts,junctions or when overtaking and I hope I dont have in the future

I have never had any problems either... touch wood

Problem with DSG is as good as it is at mimicing a normal auto box on the move it's pretty terrible at low speeds. Shift quality; particularly on down changes between 2nd and 1st go to ****; its the price you pay for having a dual clutch box and no loss of power I guess. Also low speed manouvers can be a bit tricky. We have a very steep driveway and I find that it always shifts from 1st to 2nd midway up the slope, took some getting used to. Also on rare occasions the car will roll backwards even when in D (hill hold sometimes gets confused I think)....anyway its not fool proof like a normal torque converter auto.

One thing I did find a bit scary was whilst the car was new and the brakes were bedding in, I approached a couple of junctions at speed, hit the anchors, no engine braking (doesnt happen in D) and barely stopped in time. Not so bad now as the brakes are bedded now but I think its still quite easy to get caught out in D if travelling at pace then you suddenly need to stop.

For info in Manual mode i've accidentally hit the paddle one too many times trying to drop the car into second approaching a roundabout and managed to get it into 1st at approx 25 mph, revved quite hard and would have stayed in gear if I hadnt changed back to 2nd, quite easily done if not paying attention.

I have never had any problems either... touch wood

Yeah, this happened to me in Manual mode and I think it's mostly in manual that it happens. It's only ever happened to me when I've stopped. The car just seems to disengage the engine and doesn't respond to anything I do? Very strange and as said, very dangerous. I've pulled out onto a busy road (luckily empty busy road) and simply rolled onto it because the very little momentum I had allowed me to roll onto the road then when I pushed the gas, nothing? So i was left crawling across the road. All I did was moved it into Park, came to a complete halt and then moved back into D and that seemed to do the trick?

Yeah, this happened to me in Manual mode and I think it's mostly in manual that it happens. It's only ever happened to me when I've stopped. The car just seems to disengage the engine and doesn't respond to anything I do? Very strange and as said, very dangerous. I've pulled out onto a busy road (luckily empty busy road) and simply rolled onto it because the very little momentum I had allowed me to roll onto the road then when I pushed the gas, nothing? So i was left crawling across the road. All I did was moved it into Park, came to a complete halt and then moved back into D and that seemed to do the trick?

Yeap, its exactly this. For me, change from D > N, then back N > D fixed it while crawling, didnt even stop.

A small correction though if I may, it is not the Manual Mode that its causing it, because even in Manual the car shifts down itself no problem. It is your own intervention at a time when its already about to change gears that it messes with its head, and more specifically when asking to go from 2nd to 1st.

It's happened two times, I once had it in D-Auto and second time in D-Manual so it's not the mode to blame but rather the driver's intervention asking something unexpected.

its always in manual its happened.

is it strange to ask the gearbox to change down through the gears from 5 to 2 while deccelarating and then expect it to accelerate when the throttle is pressed ?? i think not

This system is down right dangerous!, I may be shot down for saying this, the glitches should have been taken care of before putting Sudo stigs on the roads in these cars, down right crazy shouldn't happen loosing all drive whilst overtaking , pile up on motorway waiting to happen!

its always in manual its happened.

But I had it happening on D-Auto so its not the Tiptronic mode to blame. You could be in D-Auto, D-Manual or even S it does not make a difference. It's WHEN you decide to use the paddles but don't succeed in doing it in time that this situation MAY come up.

What was said about putting it in S-Mode is a workaround for having more torque so you don't feel you need to shift manually, but even then, If for some reason you decide to shift-down and the box is shifting down at the same time, the problem may come up.

However, it is not as bad as it may sound. After these two times in my first days, the discussion here and the understanding of DSG's way to work, I think I'm already past it. I leave it do its thing on situations like this. After all the car is powerfull enough to run off even with 2nd gear and 6km/h so no big deal unless you're being chased by cops...

This system is down right dangerous!, I may be shot down for saying this, the glitches should have been taken care of before putting Sudo stigs on the roads in these cars, down right crazy shouldn't happen loosing all drive whilst overtaking , pile up on motorway waiting to happen!

It can't happen while overtaking on a motorway. The conditions for it to appear are very specific and are not the ones you would be in on a motorway's overtake.

I think however a notice, especially for new drivers to DSG, should be included in User Manual, mentioning specifically situations like the one we talk about in this thread.

Edited 6 September, 201114 yr by newbie69

Why would you change down when slowing at a junction anyway. Even in manual it does it for you doesnt it?!

Why would you change down when slowing at a junction anyway. Even in manual it does it for you doesnt it?!

to keep the revs up for when you want to accelerate. im sure if you was in a manual you wouldnt stop at every junction not would you wait til your on top of the junction before making a selection. its about being proactive opposed to reactive.

Why would you change down when slowing at a junction anyway. Even in manual it does it for you doesnt it?!

Well because the car may decide that you would be ok with 3rd gear and 1200-1500 rpm while you may want to have 2nd and 2000rpm because lets say you see an uphill just ahead.

The problem occurs when the DSG re-evaluates the situation, changes its mind, and decides to shift down to 2nd just a millisecond before you decide to do the same thing manually. Then it will end up changing 2 gears consecutively, dropping in 1st and then it MAY stall.

I have to say though that with time (a few days!), I started having more confidence on it and it seems to work, I just brake a little more so that it understands early enough that I need the 2nd gear. But why happening at all, thats the point...

to keep the revs up for when you want to accelerate. im sure if you was in a manual you wouldnt stop at every junction not would you wait til your on top of the junction before making a selection. its about being proactive opposed to reactive.

Isnt that what sport mode does?

Interesting..

Have you tried changing down slightly earlier then you can utilise the engine braking more, this way the computer will know not to change down again.

Else let the computer do the changing down and you leave it alone :p I believe the computer is trying to do what your trying to do but ever so slightly quicker..

I am old hat I know , this system ain't fool proof! And there are a lot of fools out there seems to me this DSG system although great on paper but in theory slightly flawed , so for me I'm OUT!

Interesting..

Have you tried changing down slightly earlier then you can utilise the engine braking more, this way the computer will know not to change down again.

Else let the computer do the changing down and you leave it alone :p I believe the computer is trying to do what your trying to do but ever so slightly quicker..

i change down to early if anything. revs flick up to 2.5/3k when im down shifting to utilise engine braking.

the problem comes when its downshifting due to low revs. i think the issue would be solved if it was to blip the throttle more on the auto down shifts the same as it does on the down shifts at higher rpm. effectively double clutching as you would do in a manual.

I did this just once within the first few days of collection.

As said previously it is about knowing the software algorithms.

If the revs drop to 1400rpm (iirc) in third it changes to second, so long as your downshift is above this you are laughing.

You are just adjusting to the box in the same way as any other car, knowing when to change gear, learning how it handles, etc etc.

ive had this car four months and have been driving sequential/tiptronic gearboxed cars for around 5 years so its not about learning how to use it. what algorithm tells it to not engage 2nd gear from 3rd at 15mph when i tried to change much before it would have if left alone??

I did this just once within the first few days of collection.

As said previously it is about knowing the software algorithms.

If the revs drop to 1400rpm (iirc) in third it changes to second, so long as your downshift is above this you are laughing.

You are just adjusting to the box in the same way as any other car, knowing when to change gear, learning how it handles, etc etc.

^^^ This +1. After learning how the gearbox works its a dream to drive. Like all cars it takes some adjusting on how to drive it best.

Matt