2010 S4 Stasis jerking in 1st gear at complete stop. Is it problems With DSG?

[l3mix]

The car has been having rough shifts in 1st gear, most noticeable when it’s at a stand-still going into a slow creep. It feels as if the car is trying to launch itself constantly in 1st gear.

It does have a Stasis tune on it and when I changed the battery to a brand new one, the problem seemed to go away for about a week, as if drove like a 54k mile Audi s4 should drive. I’m wondering if the issue might be because of the Stasis tune? It was involved in an accident and it blew the pyro-fuse but that was all replaced, but I’m wondering if that could mess with the tune’s functionality at all?

I uploaded a video in case it helps with diagnosing the issue

https://youtu.be/yPX9VfNpZCc

[Nillious]

Obviously the first thing I would do is flash back to stock tcu tune. These transmissions rarely break. What most failures are is actually the mechatronic unit and can be replaced. Every aspect of the clutch engagement is controlled by the mechatronic witch is controlled by the software in the tcu so software is where I would start

[l3mix]

Obviously the first thing I would do is flash back to stock tcu tune. These transmissions rarely break. What most failures are is actually the mechatronic unit and can be replaced. Every aspect of the clutch engagement is controlled by the mechatronic witch is controlled by the software in the tcu so software is where I would start
Well I called a popular tuning company and they mentioned that the issue is most likely with the mechatronics unit itself since it sounded like more of a mechanical issue rather than a software issue.

But I do at least want to try to reflash the tcu back to stock to see if that will help rather then changing the mechatronics unit itself. Is it a difficult process? Do I have to go to the dealer to do it? Or is it possible to DIY it?

[bakedziti]

Well I called a popular tuning company and they mentioned that the issue is most likely with the mechatronics unit itself since it sounded like more of a mechanical issue rather than a software issue.

But I do at least want to try to reflash the tcu back to stock to see if that will help rather then changing the mechatronics unit itself. Is it a difficult process? Do I have to go to the dealer to do it? Or is it possible to DIY it?

Did stasis even have a TCU tune?

Second, I guess it would be important to figure out which version you have of the stasis ECU tune, because V1 was created by APR and then the tune moved over to Revo at some point. In either case, I don't believe home flashing was at option back then, but I could be incorrect.

Your only other options to get back to stock that I can see are purchasing another tune to give you access to stock file after you flash their tune, or going to an Audi dealer.

[Nillious]

I called several Audi dealers in my are to get a 16 gli flashed back to stock from unitronic tune and none of them would touch it. Just flat out told me no unless I bought a new ecu. Hopefully they will help you but they pretty much laughed in my face.

[l3mix]

Update/Question:

Would a parking brake and seatbelt cause an error with the rough shifting? I’m thinking it could be a culprit since I know in my 17 A4, I have the automatic parking brake engage with the car is put to drive but the seatbelt isn’t buckled. Maybe with the b8 s4 is convinced that the parking break has to be engaged thus creating the rough jerking from stop to 1st gear. All the other gears seemed to be functioning proper alt and I don’t have any codes for the transmission. Here are the codes if that could be a culprit that is worth mentioning to my mechanic before he puts in a new mechatronics unit in there.

Steering wheel
Part #: 8K0953568G
Component: Lenks.Modul
Software version: 0014
ASAM/ODX identifier: [none]
Coding: 000036 (hex)
Fault codes:
00457 Control Module for Network (J519)


Parking brake
Part #: 8K0907801H
Component: EPB Audi B8
Software version: 0100
ASAM/ODX identifier: [none]
Coding: [none]
Fault codes:
01321 Control Module for Airbags (J234)


ABS
Part #: 8K0907379CA
Component: ESP8 quattro
Software version: 0030
ASAM/ODX identifier: [none]
Coding: 290D1A (hex)
Fault codes:
00473 Control Module for Electric Park- / Hand Brake (J540)
02214 Tire Pressure Warning

Airbags
Part #: 8K0959655K
Component: AirbagVW-AU10
Software version: 0610
ASAM/ODX identifier: EV_AirbaECUVWAUDI010
Coding: 303837354230303030304A55304C384B3053 (hex)
Fault codes:
9438747 Igniter for seat belt tensioner; Driver's side
9442075 Manufacturer-specific code
9439515 Manufacturer-specific code
9439259 Manufacturer-specific code

[SwankPeRFection]

Why do you have so many codes for safety equipment? Might want to get that fixed.

A said, this is DSG goofiness which usually signifies either DSG service hasn’t been done in a while or mech unit is on the way out. This is also an issue with the Audi TCU files on the 2010 S4’s. If you can find a tuner to get you on a 2011 TCU file, it will smooth things out considerably. And the 2010 also didn’t have an easily serviceable DSG coolant line filter. If you’re on the original one, you need to replace it as when it gets towards the end of its life, it’ll do this same thing, clunky 1st to go or neutral to reverse. It’s not as pronounced if you’ve got a used TCU file, but it’s still there. Has to do with line pressure and kiss point on the clutches. If you let it go too long, you could be looking at a new mech unit or at best just the circuit board replacement if the fluid are threw it due to acidity build-up over time of not changing the fluid.