DSG performance - Need a Physio?

[richdave]

I have just dropped my Passat off for it's 15K service... I asked them to look at the transmission.

I got a shiney new Jetta for a loan car.. It is smooth as silk on take off. Not a hint of shudder or jerking. Same driving style...

I sure hope they can make the Passat better!

[passatpout]

I have just dropped my Passat off for it's 15K service... I asked them to look at the transmission.

I got a shiney new Jetta for a loan car.. It is smooth as silk on take off. Not a hint of shudder or jerking. Same driving style...

I sure hope they can make the Passat better!

I noticed the same jerkiness on mine (125kW TDI DSG) on take-off, sort of feels like a spring is wound up, then released all of a sudden. As well, my wife said that it hadn't gone into gear a couple of times when she'd driven it. When the corrosion was repaired last week, I asked them to look at the box (particularly after having a Jetta loaner with DSG, not sure on the engine, think it was the 1.9 TDI).

They reckon they reset the values back to factory, allow the fuzzy logic another play, and other than that they reckon it's the torque of that engine combined with the box to be normal.. the funny thing is that I remember commenting on it to the dealer when I test drove it before buying..

Anyhow, drove it from Melbourne to Newcastle on Sunday (did the whole trip on one tank, had to refuel in Newcastle, not because it was empty, I didn't even have the low fuel light on, but because I was back to Sydney yesterday and it wouldn't have quite made that), and noticed that it's really smooth shifting gears, but the initial take-off is pretty rough and snappy, regardless of how much throttle is used.

Last night, my brother gave it a blat down Hawkesbury Road, he mentioned the same thing - rough take-off, smooth as when shifting up or down, since it was in 4th with him going full throttle and he hadn't noticed the changes. It kept up with a Forester (the version with the WRX engine) going back up the hill, even though he was trying to get away from us..

I'll give it a few more km, then when it goes for the 15,000km service I'll take the dealer/service people for a drive to point out what I mean.. having driven 4 Golf/Jettas with various engines but all DSG, and been in a couple of others in the UK (TDI with DSG), it only seems to be the Passat that has it.. I wonder if it's a consequence of the differing torque characteristics combined with a higher mass needing a bit more action to move..

Here endeth my thoughts..

[3Putt]

The 3.2V6 petrol is a bit jerky off the mark, but nothing that my wife complains about when she's in seat 1A.

V6 has 330Nm. How much does the 125kW TDi have?

Mind you, whatever it has, its bound to be sh*tloads more than my car at 700-1000rpm, the kind of revs you have when starting off in 1st!

I hope the DSG is programmed specifically for that TDi. It would have such a different torque curve to the V6.

It couldn't be that simple could it? They couldn't be that dumb could they? Put a V6 'mapping' into a TDi?

Maybe its a limitation of the DSG. Maybe it can't handle 300Nm at 700rpm!

But then again, I think the RS6 has a bit more than 300Nm...

[richdave]

Well the dealer has done "something" as it is better but not perfect! Problem is that with a weeks driving it is getting a little worse each day. The dealer has stated on the service report that there is a fault requiring follow up. I was verbally told that it may be software or an electronic fault and the issue has been reported to VWA for advice/resolution.

[jmj]

MY09 upgrade

Reading this thread there seems a few people out there experiencing issues with the Passat Turbo lag... I wonder if the MY09 upgrade to CRD will make a difference.... anyone out there with a MY09 Passat have any remarks?... my MY09 arrives in March next year.

[richdave]

The issue I have is NOT turbo lag IMO there is a problem with my DSG box. The dealer has confirmed this and I am waiting on a response.

[jmj]

Thanks for the clarification... eagerly awaiting your response.

[passatpout]

Thanks, I'd like to know what they say, I reckon mine has the same glitch (very very jerky when starting to move).

[terra australis]

This is my first post so hello everyone...We have had our 125kw sedan granite for just over a year and really do love the car except for the turbo lag and whiplash...taking the car in on Friday for its 30k service and will again mention these issues as I did at the 15k service...wish me luck...

[terra australis]

Had the car in today for a 30k service and got a golf d as a loan car. After driving the golf around for the day I am convinced that there is something definately wrong with our Passat.

Picked up the car this arvo and said to the service guy that there is something definately wrong. And guess what, they agreed with me. They have referred it to VW and will be in contact when they know what to do. So will let you know what happens...

Cheers...

[gregozedobe]

Welcome aboard TA. Hope you find lots of useful info here, and it will be good to hear what they do about your problems. I'm a manual gearbox all the way man, so any problems I have are only my lack of feet, hand and brain co-ordination

[greenkombi]

When you push the accelerator all the way it still proceeds forward in 2nd gear but suddenly realises after about 3 metres that 2nd gear won’t cut the mustard for what is been requested through the pedal. As the system has already selected 3rd and waiting to apply it, it then has to do a reset to get to 1st..

That drives me nuts with the DSG. In auto and sometimes semi-manual when you take a corner and you have to slow a little too much and when you get around and start accelerating, it has a heart attack and needs to drop to 1st with a quite uncomfortable jerk followed by whip lash.

DSG is the way of the future but I think I'd prefer a clutch still.

[3Putt]

What about the Accelerator Detent

In manual mode it should never kick down a gear unless you push the accelerator thru the detent near the end of its travel. ie. if you tramp it!

It will also kick down if you slow too much for the selected gear - it is 'idiot proof' after all.

[terra australis]

ok gotta ask about the turbo lag in TDI. I find it really annoying/dangerous in the Passat. So is there a fix for this? After driving the Golf TDI where I hardly notice any turbo lag.

[3Putt]

Just Chip it!

Apr, Revo, Giac...