How to Reset & Re-learn the 6HP19/21 Transmission Adaptations

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Corporal
Free Vendor
Nov 6, 2016
157
Madison, AL
#1
Hey guys, here's Part 2 of the DIY sequence of refilling your trans with fluid which is resetting and relearning the adaptions. This procedure is quite involved and should take a little over an hour to complete so please DO NOT omit it. This is a critical component to restoring the shift quality and building longevity into your transmission. Please study it and ask any questions you might have before starting.
 

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Dec 28, 2016
45
Tally, FL
#2
Thanks for the clear & concise process!

About how many miles are we talking to complete Step 2, M-Mode Relearn?
Asking because speeds are often slow enough to eliminate highway, but distance covered without applying brakes seems long enough to eliminate many other roads...?

I live out in the country and can often get away with being more flexible than average, but not sure even I can pull off that list!
 

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Corporal
Free Vendor
Nov 6, 2016
157
Madison, AL
#3
About how many miles are we talking to complete Step 2, M-Mode Relearn?
Asking because speeds are often slow enough to eliminate highway, but distance covered without applying brakes seems long enough to eliminate many other roads...?

I live out in the country and can often get away with being more flexible than average, but not sure even I can pull off that list!
Step 1 D-Mode is imperative and doesn't take that long.
Step 2 M-Mode isn't as critical as Step 1 so not doing it might require a little longer of a self learn process, which translates to a longer time that you might experience a little rougher shifts. I'm not exactly sure about the mileage required but if you need to come to a stop to turn around and things like that, I don't think that should be a problem.
I performed this process yesterday and had to turn around several times during Step 2.
 

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Corporal
Free Vendor
Nov 6, 2016
157
Madison, AL
#4
It's also best to get to where you are going to conduct the process first then pull over and reset the adaptations there. The shifts are pretty violent right after reset, which is why it states to accelerate with very light throttle input so you don't cause any internal damage.
 
Dec 28, 2016
45
Tally, FL
#5
whew! That's totally do-able- no worries then! Resetting the adaptations in the area you're going to relearn is good also to be sure the temps are good to go.

Lolz- I was reading it as touching the brakes meant starting step 2 all over again :) Where I am it would be easy to do part 4 all at once, or part 6 all at once- no sweat!
 

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Corporal
Free Vendor
Nov 6, 2016
157
Madison, AL
#6
whew! That's totally do-able- no worries then! Resetting the adaptations in the area you're going to relearn is good also to be sure the temps are good to go.

Lolz- I was reading it as touching the brakes meant starting step 2 all over again :) Where I am it would be easy to do part 4 all at once, or part 6 all at once- no sweat!
Good deal. I know it looks a bit daunting at first glance but it's really not that bad.
 

R.G.

Lieutenant
Nov 17, 2016
591
Henderson, NV
#7
I recently did this...it's a f'ing nightmare. Started on one side of the city at 3am and ended on the complete opposite side at 4am. People see you going 45 on the highway at three in the morning and they join along at that speed. PASS ME ALREADY YOU TWITS
 
Nov 27, 2016
4
Austin, TX
#8
One minor error in your interpretation of the ZF adaptation procedures...

2. Step 2 Adaptation Re-Learn Procedure (M-Mode)
1) With the shifter in M Mode, accelerate the vehicle to ~30mph and select 3rd gear
2) Continue driving for 2 miles
3) Accelerate the vehicle to ~45mph and select 5th gear
4) Using light throttle, accelerate to 50mph 60mph and then coast to ~40mph without applying the
brakes, repeat for 4 cycles, then
5) Accelerate to 55mph and select 6th gear
6) With light throttle, accelerate to 65mph then coast to 50mph without applying the brakes, repeat for 4 cycles, then
7) Select 3rd gear and repeat steps 1-6 for 5 cycles, then coast to a standstill and proceed to Step 3 below

The ZF Technical Training Workbook which describes the adaptation procedures can be found here (Page 43):
http://www.natef.org/NATEF/media/NATEFMedia/2015 ASEIEA Conference/ZF_Workbook-transmission-6-8HP.pdf
 
Nov 7, 2016
29
Rockland, NY
#9
You can't perform this while the car is in the air on a lift or jack stands?

Thanks for the DIY
 

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Corporal
Free Vendor
Nov 6, 2016
157
Madison, AL
#10
You can't perform this while the car is in the air on a lift or jack stands?

Thanks for the DIY
No, you cannot.
For one, the DTC system will not let the rear wheels exceed a certain speed without feedback from other sensors like g-sensors and accelerometers.
Secondly, and most importantly, the transmission needs to be under load to adequately perform the adaptation adjustments.
 

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