Originally Posted by jcb206

Eco mode is definitely smoother, with less downshifts. What I like is that the adaptive cruise control is less aggressive. If I am going 63 mph behind a car and I go to pass, with the cruise set at 70 mph, it slowly gets up to speed. If I am in regular mode, it downshifts and tries to get up to speed in 3 seconds or less. It’s just more calm.

Originally Posted by Rock Crawler Hauler

So this is a Hot Topic.

I have a 2020 F250 7.3 4x4 with 3.55 gears and 38,000 miles. It wasn't as annoying when it was new, but at 35,000 miles it got worse. Then it started shifting funny, jerking during upshifts and downshifts, and hanging in gears. A couple thousand more miles it started slipping, hesitating, and became dangerous because it would leave you hanging for several seconds after stepping on the gas. Then it started showing the wrench on the dash after doing this. I took it to one of the largest dealers in Southern California and they set the trans in learning mode and said to drive it for 1,000 miles. It still did the same stuff many times and I took it back in. No loaner even though it is still under warranty. They kept it and said that they would replace the valve body and that they say should fix it. It is three weeks later and the truck hasn't moved in their parking lot. I called this week and now they will give me a loaner for 10 days with no promise on how soon it will be fixed.

There are several TSB's on this issue:
TSB 20-2375 2020-DEC
TSB 20-2393 2020-NOV
TSB 21-2420 2021-NOV
TSB 22-2087 2022-MAR
TSB 23-2160 2023-MAY

Ford has made changes in the transmission since the first ones like mine. They have redesigned the CDF drum in the trans to add a lip so that the bearing doesn't slip over some of the oil passages which is the main cause of the problem.
The valve body has some leaks that affect the valves sifting.
Some time in 2023 you can't get 3.55 gears any more on a new truck. Only 3.73 or 4.30.

They have eliminated the skip shift strategy some time in 2023.

I found another dealer in Southern California that has valve bodies in stock and can get on it right away. They can get a new Transmission in a couple of days.

The problem is that Ford Dealers have to follow the TSB procedures which go in steps and require driving it another 1000 miles between each step rather than fixing it with a new Trans. I offered to buy a new trans at 20% under the list price of $4650.00 and was told that they have to follow their procedure which will have me out of warranty by the time they get done.

I am a loyal Ford Customer who has had many Fords over the years. Some of them have had over 200,000 miles without problems.
55 Fairlane 2dr HT
57 Ford F100
68 Mustang Mach 1
68 Bronco
75 Ford Van
76 Ford Pinto Wagon
77 F150 4x4
92 E350 Club Wagon
97 T-Bird
2005 Rousch F150
2007 Expedition
2010 F150
2013 Taurus
2014 Mustang GT 5.0
2014 F150 FX Coyote 5.0
2020 F250

I know that I am a little wordy but I hope that this helps.

If you are not happy with your Transmission, Get Ford doing something before it is out of Warranty.

2020 F250