2012 3.0 TDI S-Tronic 2nd gear and reverse juddering.

[Natee]

Hi all, as from the title i have a severe juddering in second gear at low speeds. ie speeding up from around 5mph in second. the car shakes / judders very noticeably from underneath. this is repeatable every time.

this is slightly different to my issue in reverse, it seems overall hesitant to move in reverse, gear takes a long time to engage and when reversing there is a distinct metal / metallic clatter, similar to the sound of flywheel chatter in a manual possibly?

The dealer is cooperating and helping me fix it, so far they have done brake discs and had the mechatronics unit refurbished by ECU-TUNING. none of this made any difference this far.

the local indy tried to do an adaptation reset on the TCM today but it failed with an error along the lines of "fork unable to select neutral 2" cant remember exactly but something to do with the fork and neutral.

Dealer thinks its the gearbox so theyre fitting a recon next week, my indy however thinks its the clutches (more specifically the clutch plate isnt gripping and causing the rattle and judder.)

i was hoping some of you might have some thoughts on this? i have the CDUD 245ps engine but im unsure on my transmission.

thanks guys!!!

 

[Natee]

also whats everyone's mpg like with similar engines? im getting about 28mpg average (and thats taking it really handy.) mostly b roads etc over 1500 miles i think it averaged 31mpg with an average speed of 25mph ?

 

[Fnlzqt]

Hello!
I just registred here to tell you i got the same problem.
I bought an A6 MY 2012 2 years ago and got the problem after about 1 year driving it.
Almost the same engine (CDUC, with a remap) and the 0B5 NPB transmission.

The only problem is stuttering when shifting from 1st to 2nd or 3rd to 2nd & also reverse.
It seems like there are very few people who get this problem. Your post was the only one i could find on the entire internet.

I hope you or someone else can tell me how to fix this and what has to be replaced.

Thanks in advance

 

[owen_s3]

Hi guys, I have exactly the same issue in my a4 3.0 tdi. Did you managed to find the the cause of the problem?
Thanks

 

[skiptowncat]

Most probably Dual mass flywheel needs replacing.
FWIW, my S4 did the exact same thing and I ran it for another 70k miles (150k total) of stage 2 with no ill effects.

 

[Fnlzqt]

Quick Update:

I've driven about another 80k kilometres without getting it fixed.
Somehow the stuttering completly stopped. Don't ask me how.
The only problem still present is that the 2nd gear takes a little time to engage.
You can feel it the most while downshifting. If u stay on the gaspedal the rpm will go up till the 2nd gear engages after like 1,5sec.

That's why i think it will most likely have something to do with the clutches like the first post said:

Dealer thinks its the gearbox so theyre fitting a recon next week, my indy however thinks its the clutches (more specifically the clutch plate isnt gripping and causing the rattle and judder.)

 

[audiwaterpump]

The dealer is cooperating and helping me fix it, so far they have done brake discs
Is that a main dealer?
Can't see how it would be the brake discs.

Would help if you mentioned Mileage, age, service history, number of owners, etc ?