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My 2017 Pacifica is lurching on acceleration at least once a day. I took it in and they said a recall would solve the problem biut it didn't. I took it back in and they said because the computer doesn't show any updates they really can't solve the problem. Another thread on here indicated a solution but the dealer said if they push an update my car doesn't need it could cause more problems. What are my options?
 

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My experience leads me to conclude there is nothing the dealer is going to be able to do that will last. The lurching is a "feature" of many of the ZF9 transmissions on the Pacifica. Sure, they will try to get it "schooled" but its doesn't stay. Other FCA models have this problem, as to Honda and Toyota on their ZF9's. Chrysler doesn't care, and has stated as much that it's a feature we as customers haven't learned to appreciate yet.


My lurches or slams usually at 60 mph, but often at slower speeds too.
 

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My 2017 Pacifica Touring L Plus has 12,750 miles and a recent trip to the mountains was not a pleasant drive.Going around S turns and switch backs with the transmission trying to figure what gear to use was dangerous to me and my family.I had to pull off the road because traffic following me so close I almost got rear ended when the transmission kept down shifting and lurching.

I took into the dealer and they said that this 9 speed transmission was just hunting for the right gear.Chrysler needs to address this problem and not just tell these dealers to give use Pacifica's owners the run around.
 

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My 2017 Pacifica is lurching on acceleration at least once a day. I took it in and they said a recall would solve the problem but it didn't. I took it back in and they said because the computer doesn't show any updates they really can't solve the problem. Another thread on here indicated a solution but the dealer said if they push an update my car doesn't need it could cause more problems. What are my options?
In September (at 27,700 miles) I was able to get the 15 mph jolts (occurring once per day) to stop when the dealer did the following:
transmission adaptations reset, performed transmission quick learn, drive learn procedure.
So far it has been about 1,000 miles (and three weeks) and the jolts haven't returned yet, so I am hopeful.

Previously the transmission adaptions were reset at 15,000 miles and lasted about 10,000 miles before the problem returned. In July at about 25,000 miles I tried to get the adaptations reset, but the dealer (who reset them at 15,000 miles) said that they were clear even though I know the problem was evident and returned within a week of the July recall updates being done.

The transmission in my van has had some software updates and "relearning" done.
Chrysler Customer service called me after the most recent resetting was done and advised me to call the next time I take the van in for the problem and the service dept. is supposed to contact Chrysler to check some other things.

The standard story is that the transmission learning program has trouble when there is more than one driver that it is learning to adapt to during the learning phase (which isn't defined as a certain number of miles). I am the main driver of the van which might explain why it went so many miles (10,000) before it started having the jolt again. It is a bit ridiculous to think that a vehicle could only do well if there is one driver. Even when I am the main driver, there are driving conditions where I may accelerate or decelerate differently than my normal driving pattern. If the jolts return without anyone else driving the van, I will note that. I am planning to note when the van is driven by others and see if the jolts return afterward.

At this point, the transmission is shifting smoothly.:smile2:
If the problem returns, I will follow up as recommended by the case manager. If that doesn't work, I will ask the dealer to reset the things they did above. I have a lifetime warranty, so at least I shouldn't be charged to get it reset when needed.

There are several transmission threads on the forum. Sometimes parts were replaced, but I didn't have any parts replaced, just software adjusted.

You may need to copy info from the forum to take with you to the dealer since it is unlikely that the problem will happen for them and they may have no clue what will help. There was a transmission TSB for some of the early 2017 Pacificas that isn't a recall (so it won't show up on the dealer's recall list), but might apply to some vans. See link. https://www.pacificaforums.com/forum/474-chrysler-pacifica-minivan-issues-problems/27178-herky-jerky-transmission.html#post356586
 

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From previous Hard Shift post

Hi All

I've been doing the procedure outlined below now for a few months. For me it definitely works. What I have realized recently and after numerous resets is that my wife using the van seems to be screwing up the way it shifts. Because she accelerates slower than I the transmission seems to get confused and hard shifts, lurching and lack of torque comes back. She hasn't driven the van in almost 3 weeks and my transmission is still shifting smoothly from a reset I did 3 weeks ago. I don't have enough data yet to tell if this is just coincedence but I will update if and when the hard shifting comes back. I also found that if I do the procedure twice in a row it seems to clear the adaptions more completely. Let me know if it works for anyone else.

From a previous post:
I've been searching the web for a solution to resetting the memory in my transmission and I've found a solution that seems to work. It was an article about resetting the memory in adaptive transmissions in general. I'm sorry I don't have the link but the process was simple, and it worked for me. My transmission now shifts smoothly. This procedure can be preformed once a week if I so choose especially if I don't like the way it has learned to shift (because of the way I or my wife drove that week). I got this procedure from a BMW article and apparently it is the same for all or most adaptive learning transmissions. Mercedes apparently recommends doing it once a month. It goes like this:


1) turn the start switch to on, but do not start the car. All trouble lights are on and the fans in the heating and cooling systems are on if that was the position they were left in.
2) push the gas pedal right to the floor and hold it there for 10-20 seconds.
3) turn the start switch to off with your foot still on the gas pedal.
4) release the gas pedal, but do not put your foot on the brake pedal
5) wait for 2 minutes before starting your car. Apparently the electronics are being reset
6)Do the procedure twice


Go for a test drive. You'll think you ave a new transmission.
 

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Well I haven't posted in a while. Alas, my wonderful Pacifica started the 1st-2nd gear hard shift/jerk or lurch today. It happened 3x. I'm at around 5k miles. @SciTchr seems to know the fix with the "transmission adaptations reset." I just PM'd @ChryslerCares with my VIN to see what's up. Hope everyone is well!
 

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Well I haven't posted in a while. Alas, my wonderful Pacifica started the 1st-2nd gear hard shift/jerk or lurch today. It happened 3x. I'm at around 5k miles. @SciTchr seems to know the fix with the "transmission adaptations reset." I just PM'd @ChryslerCares with my VIN to see what's up. Hope everyone is well!
Take information with you to the dealer since it is unlikely they will offer much of a solution if they can't repeat it, get a code, or find a part to change. If the dealer claims that the adaptations are already clear, ask them to reset the other things I wrote above in post 5. It probably helped me that I had a suggestion that they could try that worked previously and that I've been their customer about 20 years.

I tried the "at home" resetting mentioned by @Po201 mentioned, but it didn't resolve the issue for my van.

The dealer had to reset the things mentioned above in post 5 and it is still shifting smoothly.:smile2:

The Chrysler Cares person who called me suggested that there are supposed to be more things that can be checked by the mechanics for this issue and that the dealer's mechanics should consult Chrysler. So you can see how far you get and keep us posted.
 

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This issue presented immediately following the last recall.
Hi f5711m,
This is not what we hope to hear. We would like to offer our assistance while you are working with your dealer to have this looked into further. If this is something that interest you, please send our team a private message with additional details.
Julie
Chrysler Social Care Specialist
 

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Hey guys I just wanted to reply to this post regarding the “at home” adaptive reset. These types of things I usually don’t put much thought into because it seems they rarely work. So first off let me say that I do not have any issues with my transmission. It’s always been just fine. Only minor complaint is the transmission isn’t very aggressive...in other words it takes a lot of throttle to downshift a gear or two. Just overall kind of sluggish, but no issues.
I did this reset and I feel that it actually really worked!!! Maaayyybbeee it’s all in my head, but I swear the car feels much more responsive and takes very little throttle now for it to downshift and go where as before I feel like it either wouldn’t downshift at all or I would have to darn near floor it to get it to. It really feels like the car woke up a bit and it’s really enjoyable to drive right now.
My van is an early built 2017 we bought it slightly used with 3500 miles. We are at 13,200 now.
 

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Hi jts97z28
Its not in your head. I’ve been resetting the adaptations for a few months now. This time i can honestly say no one has driven this van since the last reset 4 weeks ago but me. But alas, the poor shifts, slow down shifts and lack of torque is starting to come back. I resetted it again this morning and presto- perfect shifts again, more torque again.
I find it amazing that Chrysler cannot make this reset stick. Why does the transmission have to learn? Wheh it starts to shift poorly its like an aging human at the end of life.... slow, weak, confused.
Anyway, for me, I will spend the 5 minutes a month to reset the adaptations. Its a hassle but at least I have a trans that shifts smoothly.
I now have 58,860 km on the van and I’ll post the kilometres when it looses its mind again
Happy driving
 

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Hi jts97z28
Its not in your head. I’ve been resetting the adaptations for a few months now. This time i can honestly say no one has driven this van since the last reset 4 weeks ago but me. But alas, the poor shifts, slow down shifts and lack of torque is starting to come back. I resetted it again this morning and presto- perfect shifts again, more torque again.
I find it amazing that Chrysler cannot make this reset stick. Why does the transmission have to learn? Wheh it starts to shift poorly its like an aging human at the end of life.... slow, weak, confused.
Anyway, for me, I will spend the 5 minutes a month to reset the adaptations. Its a hassle but at least I have a trans that shifts smoothly.
I now have 58,860 km on the van and I’ll post the kilometres when it looses its mind again
Happy driving

I agree, I always wondered about these adaptive transmission and unless there are other benefits I dont know about, it makes no sense to me. I dont want to the transmission to adapt to driving style....I want it to drive and shift how its supposed to all the time. I dont want it to eventually become a "dog" if the person driving it drove like grandma. I drove the wife's van again today and once again I was impressed with it. Was very responsive with fairly quick downshifts without having to apply 3/4 plus throttle inputs for a downshift. I'm still happy!! Although the transmission in my 2017 Cadillac ATS is very responsive with lightning quick full throttle shifts, I almost want to try that same method and see if anything happens in that lol.
 

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My 2017 Pacifica is lurching on acceleration at least once a day. I took it in and they said a recall would solve the problem biut it didn't. I took it back in and they said because the computer doesn't show any updates they really can't solve the problem. Another thread on here indicated a solution but the dealer said if they push an update my car doesn't need it could cause more problems. What are my options?
I am dealing with the same problem zf9 transmission let off gas up shifts hard, lurching and slipping feeling numerous times to dealer happened 1 time to them did update still not fix. So I am in process of lemon law.
 
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