Second transmission failure, this time catastrophic failure.

[Gros Ventre]

Hydraulic oil (EG Transmission fluid) needs to be at the design temperature for the hydraulic components it operates. Too cold or too hot is not good. Way too cold or way too hot is really bad. On the cold side, this is why Ford added the transmission fluid heater from exhaust gas flow. This added heat early in the startup cycle or in the case of repeated short runs where the engine doesn't warm up thoroughly, enables the transmission to operate properly. In other words the 10R80 transmission is far more sensitive to fluid temperature than previous transmissions. As a side note to this, I believe it is therefore far more sensitive to foreign particulates in the fluid. So far (knock on wood), my transmission is flawless at many, many miles on it. Why? I believe early and frequent series of fluid and filter changes. My philosophy is that there will be manufacturing debris in that transmission no matter how hard the maker works at cleanliness (and they do). Particles can float around inside the transmission. When they stick somewhere they can cause sticky shifts or other stuff. They can then move around some more and cause other symptoms. In other words the transmission is a hydraulic machine and cleanliness of the insides makes a real difference. Finally, when doing something that loads the transmission, especially in hot weather, select the transmission temperature gauge on your dashboard so you can see it if it starts to overheat.

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[Sneezy]

I'm having buyers remorse and I don't even have the truck yet. Has anyone got 200K miles out a 10R80 ??

I’m not quite there yet, but I have 150k on my original trans so far. I’m the original owner and it’s been driven with 1200+ lbs of payload in the bed since day one, plus towing. It still shifts like new, but I do service the trans every 6 months (30k miles).

 

[NH-RCSB]

I’m not quite there yet, but I have 150k on my original trans so far. I’m the original owner and it’s been driven with 1200+ lbs of payload in the bed since day one, plus towing. It still shifts like new, but I do service the trans every 6 months (30k miles).

Well that's Good news !!
I drive 25K / year on average. I'm going to get a PPE cast aluminum trans pan. It's finned for added cooling and has a drain plug. Are you changing your trans filter also at your 6 / month services ??

 

[jhelrey]

We had a vehicle (Not a Ford) that had nothing but problems. This time, the transmission kept spitting seals and leaking ATF. I was hauling a trailer up to the cabin and smelled maple syrup. Pulled over at the gas station and had seen that it was leaking ATF. I said F* it and we kept going. On the way home, the vehicle barely pulled into the driveway. High RPMS to get it to shift, etc. They finally replaced it.

 

[JCsTruck]

Ford redesigned the CDF drum for the 1080R in 2023 to fix the issue with it sliding out of alignment and self destructing so that shouldn't be an issue anymore. Like any manufacturer, the plus side of purchasing a tenured design such as the 2024-2025 F-150 is the manufacturer has had time to work all the bugs out so it should in theory be the most reliable design. Ford also allows you to monitor the transmission fluid temperature on the gauge cluster so if it stays within the acceptable range then modifying transmission coolers or adding aluminum finned transmission pans shouldn’t be needed but it cant hurt either so long as it is done right.

Watch that battery voltage, especially if you leave the truck in the driveway without driving it for more than a few days. Yesterday my AC would not work and I could hear the blower fan going but little to no air came out of the vents. After I drove it home (40 minute drive), and sweated doing it ?, it worked after I shut the truck down and went out again an hour later to drive it. A few days prior I checked my battery voltage after an OTA update and it was at 12.36 volts so I put the battery charger on it to charge it back up. Looking at the battery Ford put in this truck it looks tiny and with so many computers in these vehicles I can imagine things might get weird if computers are being forced into a sleeping state when the battery voltage goes too low. Also, my truck refused to remote start that day too which was weird because I had charged the battery the day before. All works fine now though. It is well documented on this forum that when the battery voltage drops and computers are forced to shut down to save the battery that you end up with weird electrical gremlins as a result.

 

[SumGuy]

I’m not quite there yet, but I have 150k on my original trans so far. I’m the original owner and it’s been driven with 1200+ lbs of payload in the bed since day one, plus towing. It still shifts like new, but I do service the trans every 6 months (30k miles).

I seem to need a new transmission every ~20k miles.

Ford redesigned the CDF drum for the 1080R in 2023 to fix the issue with it sliding out of alignment and self destructing so that shouldn't be an issue anymore. Like any manufacturer, the plus side of purchasing a tenured design such as the 2024-2025 F-150 is the manufacturer has had time to work all the bugs out so it should in theory be the most reliable design. Ford also allows you to monitor the transmission fluid temperature on the gauge cluster so if it stays within the acceptable range then modifying transmission coolers or adding aluminum finned transmission pans shouldn’t be needed but it cant hurt either so long as it is done right.

Watch that battery voltage, especially if you leave the truck in the driveway without driving it for more than a few days. Yesterday my AC would not work and I could hear the blower fan going but little to no air came out of the vents. After I drove it home (40 minute drive), and sweated doing it ?, it worked after I shut the truck down and went out again an hour later to drive it. A few days prior I checked my battery voltage after an OTA update and it was at 12.36 volts so I put the battery charger on it to charge it back up. Looking at the battery Ford put in this truck it looks tiny and with so many computers in these vehicles I can imagine things might get weird if computers are being forced into a sleeping state when the battery voltage goes too low. Also, my truck refused to remote start that day too which was weird because I had charged the battery the day before. All works fine now though. It is well documented on this forum that when the battery voltage drops and computers are forced to shut down to save the battery that you end up with weird electrical gremlins as a result.

i had one battery replaced under warranty due and the replacement battery was also failing(always going into sleep mode, interior lights not working, approach lighting not working, etc.), and I replaced with a NAPA AGM H8. Truck seemed to be much happier all around for the last week since I replaced the battery, but then the transmission died. So I don’t really consider it a win.

 

[Gros Ventre]

I recently had occasion to let my truck stand for three weeks. It started and ran fine with no alerts, warnings, etc. This on a three year old NAPA H7 battery that has gone thru three Wyoming winters. If you still have an OEM battery, replace it with a non-Ford battery.

 

[Larrymoe]

I don't know if extra cooling is necessary. I've never seen my transmission get over 185 degrees if the gauge on the dash is to be trusted. I've never seen any temperature get above 200. And I got it last Sept and there was some 100 degree days after I got it.

 

[JCsTruck]

Funny, I dropped my son off at his friends house and on the way back as I was coming to a stop the transmission suddenly made a loud clunk sound that I could also feel. ?. I was headed to the in-laws house earlier this morning for Easter and I accidentally hit the column shifter with my hand as I was moving my hand up to grab the steering wheel and bumped the column shifter into reverse as the truck was moving at about 30 MPH. Nothing happened other than the transmission disconnected from the engine but I have never had that happen before. My 2014 also has a column shifter and it has 225k miles and never an issue on original transmission and never accidentally bumped the column shifter into reverse. I hope I didn‘t damage something because the column shifter isn’t actually connected to the transmission with a cable so I hope the transmission computer would not allow the transmission to go into reverse while moving forward. ?

 

[InSearchOfLight]

Ford redesigned the CDF drum for the 1080R in 2023 to fix the issue with it sliding out of alignment and self destructing so that shouldn't be an issue anymore. Like any manufacturer, the plus side of purchasing a tenured design such as the 2024-2025 F-150 is the manufacturer has had time to work all the bugs out so it should in theory be the most reliable design. Ford also allows you to monitor the transmission fluid temperature on the gauge cluster so if it stays within the acceptable range then modifying transmission coolers or adding aluminum finned transmission pans shouldn’t be needed but it cant hurt either so long as it is done right.

Watch that battery voltage, especially if you leave the truck in the driveway without driving it for more than a few days. Yesterday my AC would not work and I could hear the blower fan going but little to no air came out of the vents. After I drove it home (40 minute drive), and sweated doing it ?, it worked after I shut the truck down and went out again an hour later to drive it. A few days prior I checked my battery voltage after an OTA update and it was at 12.36 volts so I put the battery charger on it to charge it back up. Looking at the battery Ford put in this truck it looks tiny and with so many computers in these vehicles I can imagine things might get weird if computers are being forced into a sleeping state when the battery voltage goes too low. Also, my truck refused to remote start that day too which was weird because I had charged the battery the day before. All works fine now though. It is well documented on this forum that when the battery voltage drops and computers are forced to shut down to save the battery that you end up with weird electrical gremlins as a result.

Mine is a 23, and I had to have the transmission replaced before 12K miles. I'm not sure what the exact problem was, but there are still issues with the redesigned version. Even now, it sometimes makes weird noises when pulling our travel trailer. Unfortunately, the dash in the 23 doesn't allow you to see the exact transmission temp, but I do have an OBDLink MX+ that allows me to monitor the temp along with many other metrics. On a 2,500-mile trip last November, the temperatures did get quite high while towing, over 240°F, pulling a TT that weighs less than 5,000 pounds loaded.

 

[JCsTruck]

Ford may have redesigned the 1080R CDF drum mid 2023 however good real world information you gave on the transmission temperature. Outside temperatures are usually not high in November also so ight have been higher on a hot summer day. I’ll pay attention to mine when I tow my boat from Massachusetts to Maine this summer. If it gets higher than I would like then I may add the aluminum pan as a precaution. Just hate modifying a new truck, especially major mechanical components that are supposed to be heavy duty already. ??‍

If this truck gives me trouble though then I’ll trade it in before the warranty runs out and get something else that might not be a Ford. ??

I love the V8 BTW but the transmission I haven't made up my mind yet. Its hard to compare it to say my 2014 with the 6-speed auto which has been bulletproof and shifts well.

 

[SumGuy]

Ford redesigned the CDF drum for the 1080R in 2023 to fix the issue with it sliding out of alignment and self destructing so that shouldn't be an issue anymore. Like any manufacturer, the plus side of purchasing a tenured design such as the 2024-2025 F-150 is the manufacturer has had time to work all the bugs out so it should in theory be the most reliable design. Ford also allows you to monitor the transmission fluid temperature on the gauge cluster so if it stays within the acceptable range then modifying transmission coolers or adding aluminum finned transmission pans shouldn’t be needed but it cant hurt either so long as it is done right.

Watch that battery voltage, especially if you leave the truck in the driveway without driving it for more than a few days. Yesterday my AC would not work and I could hear the blower fan going but little to no air came out of the vents. After I drove it home (40 minute drive), and sweated doing it ?, it worked after I shut the truck down and went out again an hour later to drive it. A few days prior I checked my battery voltage after an OTA update and it was at 12.36 volts so I put the battery charger on it to charge it back up. Looking at the battery Ford put in this truck it looks tiny and with so many computers in these vehicles I can imagine things might get weird if computers are being forced into a sleeping state when the battery voltage goes too low. Also, my truck refused to remote start that day too which was weird because I had charged the battery the day before. All works fine now though. It is well documented on this forum that when the battery voltage drops and computers are forced to shut down to save the battery that you end up with weird electrical gremlins as a result.

The downside of buying a later model year is all of the value engineering done to post launch models.

I love that my lariat has every option. New lariat’s are a marked downgrade, however, having a transmission that actually functions is a pretty good positive.

 

[Sigma1914]

so do some research on this
I pretty much figured out the transmission problem by 23. Assuming you didn’t buy a 21 or a 22 should be good very few transmission problems out of 24 models

Correct. I’ve read the same exact thing. If you’ve purchased an F150 December 23 and after, then the CDF Drum containing certain clutches were updated from factory and the “issues” should’ve been resolved.

 

[Larrymoe]

The downside of buying a later model year is all of the value engineering done to post launch models.

I love that my lariat has every option. New lariat’s are a marked downgrade, however, having a transmission that actually functions is a pretty good positive.

I will certainly take a truck I can actually drive over a light in my cup holder any day of the week.

 

[Wallyo]

I seem to need a new transmission every ~20k miles.

i had one battery replaced under warranty due and the replacement battery was also failing(always going into sleep mode, interior lights not working, approach lighting not working, etc.), and I replaced with a NAPA AGM H8. Truck seemed to be much happier all around for the last week since I replaced the battery, but then the transmission died. So I don’t really consider it a win.

Every one seems to forget even with an extended warranty, the 5year 60,000 mile power train warranty comes first. So even with no extended you would be covered if you are with in the 5 years.

I have no idea what year you have since it is not listed under your name. Or the lemon law in your state? I would of filed after the first event to put ford on notice.

Bye the Bye 2 batteries replaced under warranty.

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