Hesitation From a Stop Fixed w/ SSM 54939 (transmission valve body binding issue)

[Biggerman450]

I wanted to share my experience in case it helps someone else.


My 2024 Maverick FX4 AWD (2.0 EcoBoost) with about 70,000 miles developed a hesitation that only happened when taking off from a complete stop.


One thing worth mentioning is that the issue first appeared after the truck had been parked for about two weeks while I was on vacation. I don’t know if that was related or just a coincidence, but that’s when I first noticed the problem.


The truck would hesitate and lurch under light throttle around 1,000–1,200 RPM. A few times it hesitated so badly it almost stopped moving. It also happened in Reverse. Once the truck was rolling, it drove completely normal. I could cruise at 60–80 mph, climb hills, and even haul about 1,000 pounds in the bed with no issues. There were no warning lights and no diagnostic codes.


At first I thought it might be bad fuel, spark plugs, or injectors. I even ran a bottle of Techron and filled up with fresh fuel, but nothing changed.


My dealer took the concern seriously. They didn’t just scan for codes—they performed several test drives until they were able to duplicate the hesitation. Following Ford SSM 54939, they determined the transmission valve body was binding. They replaced the valve body, torque converter, transmission oil cooler, transmission fluid, and all associated seals and hardware, then reprogrammed the transmission and completed the required Ford procedures.


After the repair, they road tested it again and confirmed the hesitation was gone before returning the truck.


If your Maverick hesitates only from a dead stop, drives normally once it’s moving, and isn’t setting any codes, don’t let the lack of a check engine light convince you there’s nothing wrong. Ask the dealer to drive the truck long enough to reproduce the issue and investigate the transmission rather than relying only on a code scan.


I’m hopeful this fixed it for good, but I’ll update this thread if anything changes.

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[Cancunbadlands]

What a great dealer!

 

[Chops]

I wanted to share my experience in case it helps someone else.


My 2024 Maverick FX4 AWD (2.0 EcoBoost) with about 70,000 miles developed a hesitation that only happened when taking off from a complete stop.


One thing worth mentioning is that the issue first appeared after the truck had been parked for about two weeks while I was on vacation. I don’t know if that was related or just a coincidence, but that’s when I first noticed the problem.


The truck would hesitate and lurch under light throttle around 1,000–1,200 RPM. A few times it hesitated so badly it almost stopped moving. It also happened in Reverse. Once the truck was rolling, it drove completely normal. I could cruise at 60–80 mph, climb hills, and even haul about 1,000 pounds in the bed with no issues. There were no warning lights and no diagnostic codes.


At first I thought it might be bad fuel, spark plugs, or injectors. I even ran a bottle of Techron and filled up with fresh fuel, but nothing changed.


My dealer took the concern seriously. They didn’t just scan for codes—they performed several test drives until they were able to duplicate the hesitation. Following Ford SSM 54939, they determined the transmission valve body was binding. They replaced the valve body, torque converter, transmission oil cooler, transmission fluid, and all associated seals and hardware, then reprogrammed the transmission and completed the required Ford procedures.


After the repair, they road tested it again and confirmed the hesitation was gone before returning the truck.


If your Maverick hesitates only from a dead stop, drives normally once it’s moving, and isn’t setting any codes, don’t let the lack of a check engine light convince you there’s nothing wrong. Ask the dealer to drive the truck long enough to reproduce the issue and investigate the transmission rather than relying only on a code scan.


I’m hopeful this fixed it for good, but I’ll update this thread if anything changes.

How much did this repair cost? Tom Tucker is curious

Here are the key details from the Ford SSM 54939 per google:

• “Affected Vehicles: Certain 2020–2026 Ford Escape and Corsair, 2021–2026 Bronco Sport, and 2022–2026 Maverick models.
• The Problem: The vehicle may exhibit a noticeable shudder, typically at speeds below 60 mph.
• The Cause: The shudder is usually related to a torque converter lock-up or line pressure issue inside the transmission.
• No Trouble Codes: This condition often happens without triggering any diagnostic trouble codes (DTCs) in the Powertrain Control Module (PCM).”

 

[Biggerman450]

How much did this repair cost? Tom Tucker is curious

Here are the key details from the Ford SSM 54939 per google:

• “Affected Vehicles: Certain 2020–2026 Ford Escape and Corsair, 2021–2026 Bronco Sport, and 2022–2026 Maverick models.
• The Problem: The vehicle may exhibit a noticeable shudder, typically at speeds below 60 mph.
• The Cause: The shudder is usually related to a torque converter lock-up or line pressure issue inside the transmission.
• No Trouble Codes: This condition often happens without triggering any diagnostic trouble codes (DTCs) in the Powertrain Control Module (PCM).”

I had extended warranty. Before they looked it up it was going to be around $4000. All I paid was my warranty deductible $200.

 

[Chops]

I had extended warranty. Before they looked it up it was going to be around $4000. All I paid was my warranty deductible $200.

Nice! I have the extended warranty too. $27/mo for peace of mind. Paid off for you big time

Curious - did you drain/refill your trans fluid in those 70,000 miles?

 

[Biggerman450]

Nice! I have the extended warranty too. $27/mo for peace of mind. Paid off for you big time

Curious - did you drain/refill your trans fluid in those 70,000 miles?

No I had not changed trans fluid. Just regular oil changes. Bought the truck Dec. 2023.

 

[Bob The Builder]

I would suggest performing a drain & fill no later than 15-20K then repeating the drain and fill process at least one more time (driving for a few days in between) to gradually replace most of the old fluid with new fluid. This way the fluid that was in the lines during the first change will get diluted.

 

[Chops]

I would suggest performing a drain & fill no later than 15-20K then repeating the drain and fill process at least one more time (driving for a few days in between) to gradually replace most of the old fluid with new fluid. This way the fluid that was in the lines during the first change will get diluted.

Especially if you’re a high mileage driver without an extended warranty. Any mechanic who says “you don’t need to” surely prefers to rebuild your transmission$ Fun job.

 

[Chops]

What a great dealer!

Although Ford Corporate & the Extended Warranty Folks had to give the Dealer the ok to do the costly repair.

Clogged transmission fluid passages from dirty fluid usually don’t ruin transmission until after the power train warranty expires. Extended Warranty folks bear the risk. They’d probably prefer if Ford recommended fluid change at 50,000 miles to get them off the hook…

 

[Cancunbadlands]

Warranty

 

[NiCkyGee]

I wanted to share my experience in case it helps someone else.


My 2024 Maverick FX4 AWD (2.0 EcoBoost) with about 70,000 miles developed a hesitation that only happened when taking off from a complete stop.


One thing worth mentioning is that the issue first appeared after the truck had been parked for about two weeks while I was on vacation. I don’t know if that was related or just a coincidence, but that’s when I first noticed the problem.


The truck would hesitate and lurch under light throttle around 1,000–1,200 RPM. A few times it hesitated so badly it almost stopped moving. It also happened in Reverse. Once the truck was rolling, it drove completely normal. I could cruise at 60–80 mph, climb hills, and even haul about 1,000 pounds in the bed with no issues. There were no warning lights and no diagnostic codes.


At first I thought it might be bad fuel, spark plugs, or injectors. I even ran a bottle of Techron and filled up with fresh fuel, but nothing changed.


My dealer took the concern seriously. They didn’t just scan for codes—they performed several test drives until they were able to duplicate the hesitation. Following Ford SSM 54939, they determined the transmission valve body was binding. They replaced the valve body, torque converter, transmission oil cooler, transmission fluid, and all associated seals and hardware, then reprogrammed the transmission and completed the required Ford procedures.


After the repair, they road tested it again and confirmed the hesitation was gone before returning the truck.


If your Maverick hesitates only from a dead stop, drives normally once it’s moving, and isn’t setting any codes, don’t let the lack of a check engine light convince you there’s nothing wrong. Ask the dealer to drive the truck long enough to reproduce the issue and investigate the transmission rather than relying only on a code scan.


I’m hopeful this fixed it for good, but I’ll update this thread if anything changes.

I have this problem with my 26 Escape. Dealer found nothing but coincidently the problem stopped. My Maverick has more of a studdering occasionally.

 

[morrisangelo]

Was this hesitation occurring cold (parked overnight), warmed up after a mile or two, or neither?

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