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post #1 of 12 (permalink) Old 05-01-2017, 03:01 PM Thread Starter
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Questions about flashing transmission

How do I know if I have the latest transmission software version? (Not sure of the terminology here.) If I need an update, how much does that cost, roughly?

My transmission seems to be working fine (I get a hard downshift when coming to a stop sometimes, but it's very rare), but I'd just like to have peace of mind knowing I have the latest version available.

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post #2 of 12 (permalink) Old 05-01-2017, 03:26 PM
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I believe a tech must hook up the computer to read the version of the software in the TCM, possibly someone here has been in the advanced admin section of the uConnect and seen if the software versions of the control modules are available.

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post #3 of 12 (permalink) Old 05-01-2017, 03:42 PM
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Only the dealership will know what software you have. The hard downshift, if it is rare as you say, will be normal. I have this as well, a long with others. But it would be best to go into the shop to check for updates in case you're missing any. If you still have factory warranty, it shouldn't come at any cost to you.

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post #4 of 12 (permalink) Old 05-01-2017, 09:49 PM Thread Starter
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Originally Posted by wpgguy View Post
Only the dealership will know what software you have. The hard downshift, if it is rare as you say, will be normal. I have this as well, a long with others. But it would be best to go into the shop to check for updates in case you're missing any. If you still have factory warranty, it shouldn't come at any cost to you.
No warranty unfortunately, I'm the 2nd owner, and it had 35K when I bought it. I've long since surpassed that last 1000 miles left on the warranty. Just trying to get a ballpark idea of the cost so I know what is reasonable to pay.

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post #5 of 12 (permalink) Old 05-02-2017, 07:31 AM
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No warranty unfortunately, I'm the 2nd owner, and it had 35K when I bought it. I've long since surpassed that last 1000 miles left on the warranty. Just trying to get a ballpark idea of the cost so I know what is reasonable to pay.

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post #6 of 12 (permalink) Old 05-02-2017, 08:18 AM
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Originally Posted by RhinosGoMoo View Post
How do I know if I have the latest transmission software version? (Not sure of the terminology here.) If I need an update, how much does that cost, roughly?

My transmission seems to be working fine (I get a hard downshift when coming to a stop sometimes, but it's very rare), but I'd just like to have peace of mind knowing I have the latest version available.

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Actually the dealer has to scan the vehicle. That is the VIN number for the most part and the vehicles computer for any trouble codes.
From what I understand is that the VIN number is the key, that determines updates needed. Updates are assigned by VIN number based on prior updates if any. Much the same way recalls are tracked when completed or not. When an update is published it is usually as a TSB. FCA will load all affected VIN #'s into the TSB for the dealer. That will show when they scan your VIN.
Now one thing that was explained to me by my dealer is the latest update, say the TCM(transmission), is not necessarily the best for your Cherokee. Its not like your home computer.
In my case (2014 Cherokee}I had a May 2014 dated transmission update on May 2015. For me and my VIN that is the latest and greatest update available for my particular VIN. There has been many since but they are not required for mine.
Now in your case there may be one required based on any trouble codes you may have and TSB's assigned to your VIN. Also on occasion if the dealer is on the ball there might be a TSB update that fits a particular issue you are having. Other than that it is not advisable to throw non required updates on your transmission.

Now owing to the fact that you have a 2014 Cherokee I would guess you have had at least 1 update on the transmission. Most likely the RO1 mailing. There was also one on the TCM cable recall that I am sure you have had. If not a visit to the dealer would be mandatory. If you had the cable recall then the dealer would have scanned your VIN and any required updates would have shown up, to that date.
You have 5 years on the transmission so there should be no charge for required updates.
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post #7 of 12 (permalink) Old 05-02-2017, 08:24 AM
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I believe a tech must hook up the computer to read the version of the software in the TCM, possibly someone here has been in the advanced admin section of the uConnect and seen if the software versions of the control modules are available.
This being off topic a bit. How has your Update (1st one) been working out for your Cherokee. I know you had a standing order for the dealer not do updates.
Just curious. Thanks.

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post #8 of 12 (permalink) Old 05-02-2017, 08:27 AM
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The price I guess would depend upon the dealer. To check to see if you have all the updates on your vehicle involves about a 3 minute job for the service writer to plug in his computer and it will show what you have had and what may need to be done. I said "may need" as not everybody on here has had even one update on their transmission and may be ahead of the game. A recall would still be free as far as I know so maybe you could ask to see if there is any recalls on it and if there are some TSBs maybe they would tell you that too. Many dealers do charge a fee of one hundred dollars or more to do a diagnostic check for a particular problem as they don't want to tell you what is wrong and then you go somewhere else to get the repair done as they do have to pay their techs. (one dealer I used to go too applied the diagnostic charge toward the repair if you then had them repair it there--think those days are gone--most now charge the diagnostic fee and do not apply it to your repair. If I am making you confused maybe someone else will clear it up for you.
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post #9 of 12 (permalink) Old 05-02-2017, 08:46 AM
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Originally Posted by Jeepster1 View Post
This being off topic a bit. How has your Update (1st one) been working out for your Cherokee. I know you had a standing order for the dealer not do updates.
Just curious. Thanks.
They did all outstanding recalls and updates. And, as I imagined, the only issue is the transmission...

Shifting quality has degraded, but not drastically. I notice lower gear lags and rougher shifts 1-2, 2-3, 3-4 and down as well, and I end up with 3rd gear during rolling stops and revs with little power about half the time.

I have also seen about a 2 MPG drop in mileage. Although I have yet to make a decent highway trip to see if anything is different there.

It is not a radical change, just what I had been trying to avoid, as my trans was doing beautifully up until I took the plunge.

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post #10 of 12 (permalink) Old 05-02-2017, 10:59 AM Thread Starter
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Originally Posted by Jeepster1 View Post
Actually the dealer has to scan the vehicle. That is the VIN number for the most part and the vehicles computer for any trouble codes.
From what I understand is that the VIN number is the key, that determines updates needed. Updates are assigned by VIN number based on prior updates if any. Much the same way recalls are tracked when completed or not. When an update is published it is usually as a TSB. FCA will load all affected VIN #'s into the TSB for the dealer. That will show when they scan your VIN.
Now one thing that was explained to me by my dealer is the latest update, say the TCM(transmission), is not necessarily the best for your Cherokee. Its not like your home computer.
In my case (2014 Cherokee}I had a May 2014 dated transmission update on May 2015. For me and my VIN that is the latest and greatest update available for my particular VIN. There has been many since but they are not required for mine.
Now in your case there may be one required based on any trouble codes you may have and TSB's assigned to your VIN. Also on occasion if the dealer is on the ball there might be a TSB update that fits a particular issue you are having. Other than that it is not advisable to throw non required updates on your transmission.

Now owing to the fact that you have a 2014 Cherokee I would guess you have had at least 1 update on the transmission. Most likely the RO1 mailing. There was also one on the TCM cable recall that I am sure you have had. If not a visit to the dealer would be mandatory. If you had the cable recall then the dealer would have scanned your VIN and any required updates would have shown up, to that date.
You have 5 years on the transmission so there should be no charge for required updates.
Thanks, great info

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