DSG jumping out of gear on take off

[dmanb2b]

I have this same issue. Uni Stg2 and 034 lower DB insert. 2017 Alltrack. Anyone try reaching out to Uni on this?

 

[tigeo]

I have this same issue. Uni Stg2 and 034 lower DB insert. 2017 Alltrack. Anyone try reaching out to Uni on this?

It has nothing to do with the software. It seems to cover non-tuned to various tuners.

 

[Yonan]

@tigeo
I read all the threads and i have the same exact issue in my mk7.5 gti and yes sometimes i do the slow brake release to prevent this happening

Is this normal ? Any solution?
And does increasing the idle rpm makes it better?

 

[tigeo]

@tigeo
I read all the threads and i have the same exact issue in my mk7.5 gti and yes sometimes i do the slow brake release to prevent this happening

Is this normal ? Any solution?
And does increasing the idle rpm makes it better?

Is this normal? Maybe?

Increase idle RPM help? No idea.

 

[The Fed]

The code you have, could it be related to the shifter position sensor?

 

[tigeo]

The code you have, could it be related to the shifter position sensor?

Are you resonding to my OP? If so I had that sensor replaced long ago and still get this once in a while.

 

[DSG-Guy]

I have been lurking on this thread for about 2 years. I haven't found the solution but just sharing my experience and observations in the event that it helps anyone else. My 2015 GTI DSG does the lurch occasional. Bought it at 187,000km fully stock over 2 years ago and never noticed at first. It is now at over 230,000km. After noticing, I have gone through the following, BFI stage 1 dogbone insert, 034 Metal insert, CTS and and trans mounts. I am now back to fully OEM engine and trans mounts, new dogbone bushing. With the dogbone inserts, the false starts were jarring but its much softer with the OEM parts. I have also tried different variations of adaptions in different temperature conditions with no positive changes. tigeo has already noted this.

At some point I got an APR TCU tune which didn't help or hurt the issue but the car drives better. I also have a 2015 Audi S3 that I have owned since 75000km for 5 years which is just over 133,000km now and has never had the issue.

The FCP Euro DSG video below does mention the issue at about 13 minutes in saying it is actually the sign of the Dual Mass Flywheel going bad. It is pretty expensive to get it done so I haven't tried it.

I think I read somewhere about it going away for someone after they installed a Wavetrac LSD, not sure if they changed their Dual Mass Flywheel coincidentally as well. Wish I could find it.

Without more information, there is no guarantee changing the DMF will fix it so I wouldn't recommend it unless someone had planned to do a Wavetrac anyway and had money to throw at it. Let me know what you guys think.

 

[goodvibes]

I have been lurking on this thread for about 2 years. I haven't found the solution but just sharing my experience and observations in the event that it helps anyone else. My 2015 GTI DSG does the lurch occasional. Bought it at 187,000km fully stock over 2 years ago and never noticed at first. It is now at over 230,000km. After noticing, I have gone through the following, BFI stage 1 dogbone insert, 034 Metal insert, CTS and and trans mounts. I am now back to fully OEM engine and trans mounts, new dogbone bushing. With the dogbone inserts, the false starts were jarring but its much softer with the OEM parts. I have also tried different variations of adaptions in different temperature conditions with no positive changes. tigeo has already noted this.

At some point I got an APR TCU tune which didn't help or hurt the issue but the car drives better. I also have a 2015 Audi S3 that I have owned since 75000km for 5 years which is just over 133,000km now and has never had the issue.

The FCP Euro DSG video below does mention the issue at about 13 minutes in saying it is actually the sign of the Dual Mass Flywheel going bad. It is pretty expensive to get it done so I haven't tried it.

I think I read somewhere about it going away for someone after they installed a Wavetrac LSD, not sure if they changed their Dual Mass Flywheel coincidentally as well. Wish I could find it.

Without more information, there is no guarantee changing the DMF will fix it so I wouldn't recommend it unless someone had planned to do a Wavetrac anyway and had money to throw at it. Let me know what you guys think.

I think there's more to it. My minor form of this issue showed up after a fluid change and was gone some months later (longer than it would take the trans to simply adjust itself to a reset.) I'm knocking on wood as write this but that wouldn't correct if a bad flywheel. Also, some here have had the issue intermittently for years without a failure. Yours has enough miles where that prognosis may be correct but the overall issue appears to be more complex.

 

[tigeo]

I think there's more to it. My minor form of this issue showed up after a fluid change and was gone some months later (longer than it would take the trans to simply adjust itself to a reset.) I'm knocking on wood as write this but that wouldn't correct if a bad flywheel. Also, some here have had the issue intermittently for years without a failure. Yours has enough miles where that prognosis may be correct but the overall issue appears to be more complex.

I still have my money (on my issue...hard to tell online sometiems what folks actually have going on...) is that's just a calc that the car does that says "no" b/c it thinks it's going to stall so related to brake pad compound/release.

 

[geokilla]

I still have my money (on my issue...hard to tell online sometiems what folks actually have going on...) is that's just a calc that the car does that says "no" b/c it thinks it's going to stall so related to brake pad compound/release.

If that's the case, then it shouldn't happen on downhill starts. Mine started doing that and I'm really wondering whether I should get rid of the car before the DSG goes, assuming it does go. Though I recently did a DSG fluid change and supposedly, a TCU reset, and the mechanic didn't say anything that would have me worried.

 

[tigeo]

If that's the case, then it shouldn't happen on downhill starts. Mine started doing that and I'm really wondering whether I should get rid of the car before the DSG goes, assuming it does go. Though I recently did a DSG fluid change and supposedly, a TCU reset, and the mechanic didn't say anything that would have me worried.

I have beat the ever living shit out of mine over the last 6 years. It's always done that intermittently and still shifts perfectly.

 

[geokilla]

I have beat the ever living shit out of mine over the last 6 years. It's always done that intermittently and still shifts perfectly.

Sorry I meant it started doing that on downhill starts. Otherwise, it's the DSG is still performing the same as what I said before in months and years past.

I noticed the 2-1 downshift is occasionally rough if I'm at about 20Km/H. Sort of like it's not rev matching or engaging properly. Does yours do that?

 

[tigeo]

Sorry I meant it started doing that on downhill starts. Otherwise, it's the DSG is still performing the same as what I said before in months and years past.

I noticed the 2-1 downshift is occasionally rough if I'm at about 20Km/H. Sort of like it's not rev matching or engaging properly. Does yours do that?

Yes I've had this issue on a downhill start a few times - i can alleviate all of this 100% by how I let off the brake.. 2-1 can be a little jerky once in a while but so is it in a stick

 

[invisired]

Hi guys. how are you?
Here, jetta 2014 DQ250. I have this car since 30.000km, (at 60.000km - dsg oil change) and this rarely happened until my second dsg oil change now at 190.000km (ah! ok i took to long, but the old oil was in very good aspect) and now things goes worst starts jerky exactly like tigeo explained. i did vcds calibration, seems to have little improved but still happens.

I've thought of everything, it's as if when I release the brake the DSG isn't able to think enough to shift into gear smoothly. but not every time. it drives me crazy. And what about of the new DSG oil viscosity? perhaps. It seems like something really linked to the brakes, release pressure versus the DSG computer to understand when to apply the clutch at the right time.

I also thought about idle rpm but I don't know.

I've seen somewhere about TBI recalibration. It looks like something related to rpm. Has anyone tried?

I´ll try to use vcds and collect logs and running a test to do a jerky. Maybe i can get some information to drive us a hint about this.

 

[szviktor]

The same issue occurs with a 2013 Golf GTI. It currently has 210,000 km. The clutch and dual-mass flywheel are original. On the first start, after releasing the handbrake, if I suddenly release the brake pedal, the car suddenly jumps backward. Meanwhile, the display shows D1 → D → D1, followed by a clunking sound, after which the clutch engages. I’ve attached images showing the fault codes detected by OBDeleven.

We disassembled the mechatronics and found one issue related to the internal wiring harness. The correct voltage was not reaching all the solenoids, though I can’t specify which connections were faulty. Unfortunately, it seems this repair didn’t solve the problem.

Additionally, during slow, continuous stops, the gearbox shifts harshly from 3rd to 2nd gear and from 2nd to 1st, accompanied by a clunking noise. This issue is most noticeable when the transmission fluid is cold.

About 1-2 months ago, I replaced the complete rear brake assembly. Before the replacement, I didn’t experience the issue where it jumps from D to D1 and back; instead, there was just a sudden movement where the car jumped backward after releasing the brake pedal.

My mechanic suggests the TCU unit might be the problem.
Video: DSG jumping between D1 and D