6-speed Service Transmission message.

[DreamedofaJeepSomeday]

I have a 2020 Overland with 6-speed MT, special-ordered, delivered in late July 2020. It was manufactured after the initial clutch overheating problems were supposedly fixed.

After a while, I got a recall notice on the clutch overheating problem. The "fix" as explained in the letter, was to reprogram the ECM so that torque is reduced if the clutch gets too hot. Sounded kind of janky to me, but not wanting to endanger warranty, I had it done. No noticeable change in operation, except now I get gear selection on the screen, which is a nice touch and was not there before the reprogram.

Much later my Service Rep told me the new fix was available, which includes an all-new clutch. That was fine by me, since by that time all warranties were expired and I liked getting a new clutch, which after all is a wear-out part. However, after the job was done the clutch was not operating properly, too soft and not even fully disengaging when pressed to the floor. Service Rep said it just needed a reset, which solved the problem. But a new one emerged.

Periodically I get a message on screen "Service Transmission", which comes and goes at will. My Service Rep is stumped, since a MT should not need "service". He says bring it back in and they will get FCA Engineering on it. Just wondering if anyone else has solved this problem, so I can give my Service Rep a heads up.

BTW, I am a Boomer, who knows how to drive a MT with no danger of abusing the clutch.

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[Rahkmalla]

you need to get a jscan to see what codes are tripping while the message is active. I'm assuming based on the way you laid your story out the service writer is stumped because you've never been able to bring it to him while the message is active. Now... to my knowledge vehicle store old codes, so really that shouldn't be a problem, but who knows. get jscan and see for yourself.

 

[ArchEtech]

You probably don’t have the new clutch assembly. Check recalls on your vin.

 

[DreamedofaJeepSomeday]

Thanks for quick replies!

@Rahkmalla The message came up while in the shop - but they did not know why. The Jeep specialist told me that when I see the message (it prevents seeing anything else) to hit OK and it would go away. Not true. It comes and goes with no apparent pattern.

I believe they scanned, but could not find a reason for the message. They said it appeared to be a software glitch.

@ArchEtech You mean you think the dealer folks lied about it? I see no reason why they would do that. And as I said, the clutch was not working right at first (they fixed that) so obviously something was done to it. As far a VIN search, I tried several "free" ones that wanted me to start a "trial membership" before they would cough up a report. Any suggestions on a site?

 

[4xjeepr]

My 2020 did the same thing. When the service transmission icon comes up I put a scanner on it and showed no codes at all. Took it back to the dealer twice for this. No luck with them and they were just as stumped as yours are.
That being said, the intermittent light finally stopped coming on after about a hundred and fifty miles on the new clutch. Yours should do the same. Oh...and pressing ok on the wheel does not make it go away, I tried it a dozen times. Best of luck to you!

 

[DylanM]

If it's a software glitch I wonder if reflashing the PCM would help.

 

[DreamedofaJeepSomeday]

4xjeepr, Thanks! I knew there had to be someone else experiencing this.

However, it has now been over 8,000 miles and the message still comes up now and then. Incidentally, in my case it is a message, not an icon.

Likely completely unrelated, but I ordered my JT with the limited slip rear differential, and it went bad just before the clutch fix. In fact, I was getting ready to go on a trip, which included beach driving in 4WD (in fact low range required), and my dealership worked hard to get everything fixed for me before I left. In fact two trips were involved, which is why so many miles since the clutch replacement.

I had debated whether to get the limited-slip diff, now I know the answer: pass on it and get helicals installed later. Which I plan to do in the coming months.

@DylanM I suspect that is what they will try next.

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