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  #73  
Old 03-09-2014, 06:23 PM
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Re: 2014 Transmission

Our trans has actually failed twice so far. Car is currently in shop right now. Dealer said they downloaded software. Pa. has lemon law. Three times for same problem. Can't trust a brand new car (3415 miles) to get you back home safely. We'll see what this dealer( Shippensburg ) has to say. Hanover Dodge Jeep in Hanover Pa. tried to fix it the first time. Needless to say my wife is pissed. Last Dodge in our family.
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  #74  
Old 03-15-2014, 05:09 PM
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Re: 2014 Transmission

The reflash did not help with the rough downshifting on our "14 V8. I should point out that we also own a 2011 X5 V8 that has a very similar transmission made by the same manufacturer. I would describe the downshifting on the BMW as "stiff", but not nearly as rough as on the Jeep.
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  #75  
Old 03-15-2014, 05:17 PM
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Quote:
Originally Posted by cheroguy View Post
The reflash did not help with the rough downshifting on our "14 V8. I should point out that we also own a 2011 X5 V8 that has a very similar transmission made by the same manufacturer. I would describe the downshifting on the BMW as "stiff", but not nearly as rough as on the Jeep.
Different software between the two. There's a LOT of calibration that goes into electronic transmission controls. Vehicle weight, engine torque, and a variety of other items need to be accounted for. Slight changes to any of these can result in rather dramatic changes to shift "feel."

Driver behavior can also have a large effect as modern transmissions "adapt" and change shift strategies depending on how the vehicle is driven.
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  #76  
Old 03-15-2014, 10:36 PM
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Re: 2014 Transmission

Does anyone know what the latest transmission firmware for the 14' V6 is? I just wanted to double check that my dealer did flash in the latest update...
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  #77  
Old 03-16-2014, 01:57 AM
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Re: 2014 Transmission

I have a 2001 Corvette, with a 4-speed auto. Shortly after I got it in 2000, the Corvette folk came out with an update for the transmission programming. Red bordered letter to take it into the dealer, etc.

The dealer plugged their magic box into a connector below the dash, typed a couple of keys, and 1 minute later, it was changed.

The problem it fixed? Corvette engineers had discovered "incorrect overlap on wide open throttle upshifts from 3rd to 4th." Now this is a Corvette. Can you imagine what speed at WOT an upshift from 3rd to 4th occurs at? I've had it to 130, and it was still winding out in 3rd.

I never did experience either the problem or the fix.

I truly believe some of the programming for complex transmission profiles is a Black Art, 'concocted' in an environment akin to Al Capp's "Skunk Works".
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  #78  
Old 03-16-2014, 04:13 AM
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Re: 2014 Transmission

Yup..the Latitude Tours in my opinion are expensive garbage. At 20k, mine won't pass state safety inspection. Always kept at recommended pressures and rotated regularly. Wheels and tires will go on Monday. Decided on 275/55R20 Nitto Terra Grapplers. Just had the trans and radio flashed, but haven't driven it yet. Still at the dealership with a bad HID ballast that wasn't bad when I took it in. And of course it's aftermarket from Xenon Depot.
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Old 03-16-2014, 10:23 AM
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Re: 2014 Transmission

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Originally Posted by dannyguo View Post
After the latest flash done I would say the transmission improves a lot. But noticed one thing which it seems it won't shift to level 8 with a speed under 55mph. I just drove it with level 7 all the way to work. Is this normal?

No, that's not normal. I had the same problem with mine. Had it in for an oil change the other day and mentioned it to service. They flashed the trans software and so far the problem hasn't reappeared.
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Old 04-02-2014, 11:08 AM
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Re: 2014 Transmission

Hello everyone,

Just wanted to post my experience and the supposed "solution" that chrysler recommended.

We got a 2014 WK2 3.7L last year in October. We were having transmission issues since day one related to harsh upshifting and downshifting. I got all the latest flashes applied to the car but it DID NOt make a 1% difference.

So Chrysler decided to step in and replace the control valve body. They put us in a loaner for about 8-9 days. Replaced the valve body last week and told us to drive the car for the next 1000 miles with the ECO mode off to let the car calibrate the adaptives. We've been driving the car with the eco off.

At first for the first 50 miles, the jeep seemed to be shifting pretty well (not perfect though) with a little hard shifting when coming to a stop from gear 2 to gear 1. But after the second day with the new valve body, the car is back to its regular harsh shifting. It is really bad when coming to a stop from 2 to 1 and also when downshifting from geat 5 to gear 4. We have put 500 miles on it since the new control valve body was put it. The upshfting is doing better but the downshifting is still poor. So I do not what to do at this moment? They told me that the new valve body would fix my issues.

Should I give the transmission more time to the let the new control valve body break in? I am really upset and disappointed with this issue. Also worried for the transmission in the long run as well especially after the powerterrain warranty runs out.
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Old 04-02-2014, 11:20 AM
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Re: 2014 Transmission

Quote:
Originally Posted by Shaakra View Post
Hello everyone,

Just wanted to post my experience and the supposed "solution" that chrysler recommended.

We got a 2014 WK2 3.7L last year in October. We were having transmission issues since day one related to harsh upshifting and downshifting. I got all the latest flashes applied to the car but it DID NOt make a 1% difference.

So Chrysler decided to step in and replace the control valve body. They put us in a loaner for about 8-9 days. Replaced the valve body last week and told us to drive the car for the next 1000 miles with the ECO mode off to let the car calibrate the adaptives. We've been driving the car with the eco off.

At first for the first 50 miles, the jeep seemed to be shifting pretty well (not perfect though) with a little hard shifting when coming to a stop from gear 2 to gear 1. But after the second day with the new valve body, the car is back to its regular harsh shifting. It is really bad when coming to a stop from 2 to 1 and also when downshifting from geat 5 to gear 4. We have put 500 miles on it since the new control valve body was put it. The upshfting is doing better but the downshifting is still poor. So I do not what to do at this moment? They told me that the new valve body would fix my issues.

Should I give the transmission more time to the let the new control valve body break in? I am really upset and disappointed with this issue. Also worried for the transmission in the long run as well especially after the powerterrain warranty runs out.
I would go for a week of driving and then report the results unless the shifting gets worse than what you experienced before. Log some miles on it in that week also.
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  #82  
Old 04-02-2014, 12:05 PM
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The adaptive memory for clutch fill time and pressure takes a bit to be learned. One of the best ways you can help it is to do this:

1) For the following, have ECO mode off
2) warm the vehicle by driving. Get the transmission temp over 120F but below 200F
3) on a road with a nice straight, clear section, accelerate moderately (as you would normally launch) from a stop up to 50-60mph, allowing the vehicle to up shift through all gears
4) coast down through all gears, braking slightly to a stop to achieve the final 2-1 downshift.
5) Repeat the above 10-15 times.

Yes, it's a pain but it often times helps.
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  #83  
Old 04-02-2014, 12:18 PM
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Re: 2014 Transmission

Quote:
Originally Posted by Peter_K View Post
The adaptive memory for clutch fill time and pressure takes a bit to be learned. One of the best ways you can help it is to do this:

1) For the following, have ECO mode off
2) warm the vehicle by driving. Get the transmission temp over 120F but below 200F
3) on a road with a nice straight, clear section, accelerate moderately (as you would normally launch) from a stop up to 50-60mph, allowing the vehicle to up shift through all gears
4) coast down through all gears, braking slightly to a stop to achieve the final 2-1 downshift.
5) Repeat the above 10-15 times.

Yes, it's a pain but it often times helps.
Thank you for your post. I have a few questions regarding your method, since I didn't do what you mentioned and basically just drove the car around town like we normally do after the new valve was put it in, have I lost my chance to let the transmission relearn its adaptives normally?
Also in those 500 miles that we have driven so far, about 300 of them were on the interstate at 70-75MPH with the cruise control OFF and eco OFF.

Would driving in the city and interstate affect the transmission to relearn in any way?
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Old 04-02-2014, 02:28 PM
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It will continuously relearn and adapt. This procedure is actually close to the one specified in the service manual -- I'd give it a shot first. At 500 miles with a large portion on the interstate I'd be willing to bet your clutch fill adaptive counts and pressure adaptive counts are pretty low and there's plenty of room for improvement. As an example, on my 8-speed the counts were still below 5 after 1000 miles--basically because my driving at that point hadn't been conducive to the learn cycle. I did the above procedure and after an afternoon the counts were over 10 for each clutch (A through E) and the shifting was dramatically improved.

Give it a shot. If that doesn't help, then take it back to the dealer and tell them to clear the adaptive memory and have them do the full learn drive cycles.
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