Launch Control Issues...

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May 3, 2005 | 05:09 AM

SLinez

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Launch Control Issues...

A bit of a follow on from the drag racing post...

I found it quite hard to pull off a decent start with the DSG system. I run a UK car that has launch control activated.

Whilst at the lights I would be sitting with the gear box in sport, traction cotrol turned off, my foot applied hard on the brakes and my foot flat to the floor on the accelerator.

The car then sits up and wants to pull but the brakes are stopping it, revs are limited to about 1500RPM. After about 5 seconds though the car sits back down and clearly feels like it has been knocked out of gear, the revs are still at 1500RPM but feels as if it is in neutral. When I then disengage the brakes the car 'bogs' for a second and the revs drop to zero before then pulling away and back up through the revs.

I was wondering, is this a safety feature of launch control to save the transmission? Also I was under the impression that launch control was supposed to launch the car at around 3200RPM is this correct?

May 3, 2005 | 06:05 AM

BuddyDog

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Sounds like your launch control is on the fritz.

It should pop right up to 3200 rpm. If it's bogging down, might have your Audi dealer check the operation.

May 3, 2005 | 06:54 AM

winchou

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that sounds like my 3.2 w/o LC ...

... and your 1/4 mile times may prove this out, too. According to Car and Driver (US):

" At the test track with the stability control switched off, the computer delivered a good strong launch with modest wheelspin that resulted in a 5.9-second sprint to 60 mph and a 14.3-second quarter-mile at 97 mph. "

[ Motor Trend (US) had almost exactly the same no's : 1/4 mile, sec @ mph 14.37 @ 97.23
http://motortrend.com/roadtests/coupe/112_0403_first_auditt/index1.html ]

You are down about a full second; I suspect your LC be wonky.<ul><li><a href="http://www.caranddriver.com/article.asp?section_id=16&article_id=7869& page_number=1">http://www.caranddriver.com/article.asp?section_id=16&article_id=7869& page_number=1</a</li></ul>

May 3, 2005 | 07:29 AM

SLinez

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Re: that sounds like my 3.2 w/o LC ...

You know that exactly what my thoughts were! Ive been thinking it may not be activated, but surely it would be on a UK car.

Im gonna take the car down to be looked at ASAP...

Cheers for the advice guys!

May 3, 2005 | 07:41 AM

winchou

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very surprised if LC has been disabled on UK car ...

See if you can get a VAG-COM scan of the TCM.

If you dig around in some of Marc3.2TT's post (link below), you'll see the TCM for his Euro-spec DSG is:

> Address 02: Auto Trans
> Controller: 02E 300 046 E
> Component: GSG DSG 0629
> Coding: 0000020
> Shop #: WSC 04940
> No fault code found.

My scan for US-spec (no LC) looks like this:

> GSG DSG 0604
> DTCs: 0
> P/N: 02E 300 046 G
> Coding: 0000020, WSC: 01236

If you have the "G" part number, you got a US-spec TCM, and LC is disabled. If you got "E" or "F" (IIRC), then LC should work, but your TCM may need some lookin at.

Just wanna get you into the 14's!

<ul><li><a href="https://forums.audiworld.com/tt/msgs/1248611.phtml">https://forums.audiworld.com/tt/msgs/1248611.phtml</a</li></ul>

May 3, 2005 | 08:11 AM

SLinez

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Sounds like I have a US TCM in a UK car -=(

Just read that post by Marc about the DSG and Launch cotrol differences between US and Euro Cars and by the sounds of it my UK car has a US TCM...

My car does not have true manual, the car will still automatically shift at redline.

Also when in sport or drive and i overide with the paddles the car will automatically time out and go back into automatic after a short time.

And LC by the sounds of things is disabled.

Im now really annoyed as I would have chosen a manual transmission over a DSG if it had the US TCM spec.

Any ideas on where I would stand legally in a claim against my dealership?

May 3, 2005 | 09:35 AM

winchou

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Does your owner's manual decribe the LC procedure? ...

<center><img src="http://www.audittcca.com/Members/winchou/dsg_lc/launch.jpg"></center><p>I should think you're case would be pretty strong. You expected the feature, were told it had the feature, the features is even explained in your manual -- boy it ought to work. You want it? You paid the money, get what you want!

Recent US 3.2's had this owner's maunal insert. Did you get one?