Transmission Issue 10r80 (no more re-flashing?!)

[TonyWu]

I've had my transmission oil & filter changed at about every 15k. My dealer wondered why. My rationale is to remove whatever manufacturing debris may be in there floating around. I'm aware that Ford upped their cleanliness standards for this transmission facility. Still, there will be some "stuff" that gets in. Think about things: manufacturing, packaging for shipment, un-packaging at the assembly plant, handling to the assembly line, and installation. The only issue was it was slightly under-filled at the assembly plant. This didn't show up until the first winter when temps got down to about 15ºF. Dealer fixed that. Keep in mind that this unit is a hydraulic machine. Clearances in the spool valves are really fine and any debris no matter how fine can screw up a shift. SO far, knock on wood, my transmission is trouble free. Please note that this is not a slam on Ford's manufacturing process. I believe they do as well as can be done. I've seen this with Machinery on Navy Submarines where I spent a career. The issue is simply that there are ways to operate machinery that will make it near trouble free and long lived. My goal is not get to the next trade-in, it is to make my truck last as long as possible. Like my family Suburban that went 30 years and helped get three sons thru college.

Thank you for the reply and your service!

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[Ford_Fan]

Took the truck in today. They conducted TSB 24-2304. It passed the "pressure test". So the dealer did an adaptive transmission reflash for the time being. It smoothed out for "now".

The service writer and tech were excellent. They said if it doesn't fix it they'll pull the valve body and everything else but give it the average 1k miles to see if it fixed (I know it won't, had the same issue on my 2019 10r80 which failed at 37k). I'm waiting to bring it in as the rut is kicking off and I need my truck for the next few weeks. Will prob bring it in Jan 2025 once deer season is over.

Just keeping y'all updated. If you want this done at your dealer they need to order the 6-7k machine (what they said) then they have to order all the follow on adapters.

Any new findings on this yet? Just curious as I’m dealing with a similar issue.

 

[AnthemMike]

It smoothed out for a little bit on the harsh downshift but 3-4 is still clunky. I just haven't had time to get it into the dealer. So, I am just living with it for now. I will get it to the dealer eventually that has helped me so far but they're over an hour away. I have a dealer less than 3 minutes from where I live but I wouldn't let that service department touch the keys to my truck after some previous experiences there.

 

[Ford_Fan]

It smoothed out for a little bit on the harsh downshift but 3-4 is still clunky. I just haven't had time to get it into the dealer. So, I am just living with it for now. I will get it to the dealer eventually that has helped me so far but they're over an hour away. I have a dealer less than 3 minutes from where I live but I wouldn't let that service department touch the keys to my truck after some previous experiences there.

Got it! Thanks for the reply! My truck just got the valve body changed out as well, like yours mine passed the cdf pressure test. Time will tell whether that resolves the issue or not…

 

[AnthemMike]

Got it! Thanks for the reply! My truck just got the valve body changed out as well, like yours mine passed the cdf pressure test. Time will tell whether that resolves the issue or not…

They just changed the valve body and not the cdf drum??

 

[Ford_Fan]

They just changed the valve body and not the cdf drum??

That is correct. From what I understood with my dealership, if the cdf pressure test passes the process seems to be…

software updates/ valve body break in
Valve body replacement
Transmission tear down/ replacement.

Each step then gets verified to see if the issue is corrected. I haven’t been through all their steps, currently just what I been told. We’ll see what happens as they are supposed to test drive it today since they just swapped the valve body.

 

[AnthemMike]

That is correct. From what I understood with my dealership, the process seems to be…

software updates/ valve body break in
Valve body replacement
Transmission tear down/ replacement.

Each step then gets verified to see if the issue is corrected. I haven’t been through all their steps, currently just what I been told. We’ll see what happens as they are supposed to test drive it today since they just swapped the valve body.

Got yah. I had talked to the dealer again since the re-flash they claimed now that they'll just going to do the cdf drum replacement next time I bring it in because that seems to be solving the issues (I won't hold my breath). If they want to play doctor on my truck and replace every part in sequence I'll just drive it until it blows up and hope it does before the 125k exgended warranty. My 2019 10r80 didn't last 37k....so if I was a betting man...its just another junk product put out by Ford MoCo...haha

 

[Ronin1973]

Would my 2023 built in August of 2023 have the new CDF drum already?

 

[RedDragon65]

I see this TSB excludes hybrid - anyone with a Powerboost experiencing similar issues, I am having occasional hard shift issues in the lower gears, mostly when vehicle is cold/first starting out in the am, seems to be ok after that, but I am approaching 60K, issue began infrequently about 5K ago

 

[Blue22]

Would my 2023 built in August of 2023 have the new CDF drum already?

Yeah you are good. I think it was 2022 models built on 8/16/22 and later that have the new CDF drum.

 

[Mszczewski]

I was having some clunky 3-4 shifts in my powerboost. I took it into a dealer I trusted, and they cleared the shift tables. They claimed to be unable to replicate the issue but also said they knew exactly what I was talking about as they have rebuilt several of these transmissions.

I ran it in sport mode for a full tank of gas, driving gently, which seems to have resolved it. However, I am keeping my eyes open for the next 11k miles to see if it reappears before my 60k.

I have since driven it from Wisconsin to Florida and back without issue.

 

[Snakebitten]

I was having some clunky 3-4 shifts in my powerboost. I took it into a dealer I trusted, and they cleared the shift tables. They claimed to be unable to replicate the issue but also said they knew exactly what I was talking about as they have rebuilt several of these transmissions.

I ran it in sport mode for a full tank of gas, driving gently, which seems to have resolved it. However, I am keeping my eyes open for the next 11k miles to see if it reappears before my 60k.

I have since driven it from Wisconsin to Florida and back without issue.

Great strategy to address a 10r80 that seems to be shifting poorly compared to how it previously shifted.

It won't fix a malfunctioning CDF drum or a bad valve body, but it may very well dial the shift pressures and timing in to better suit your driving experience.

And it does zero harm, as well as it's free.

Software defined mechanical devices. Sometimes they need their cache cleared, so to speak.

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