Ford bulletin TSB 23-2335
What it saysSome 2021-2023 Bronco Sport vehicles equipped with a 1.5L engine built on or before 30-Nov-2022, 2021-2023 Bronco Sport vehicles equipped with a 2.0L engine built on or before 28-Feb-2022 or 2020-2022 Escape/Corsair… NHTSA’s full summary ↓
Ford filed this with NHTSA as a service bulletin dated Oct 27, 2023, received Nov 3, 2023, about the engine. It names 9 model years across Ford and Lincoln (2020–2023). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
One page for every brand it was filed under. Each brand’s bulletins: Ford · Lincoln.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationWhat it applies to, as NHTSA’s summary states it — build dates and equipment as the manufacturer filed them. The dealer checks the VIN and the build date on the door jamb; a vehicle outside the window is not covered by this bulletin.
Some 2021-2023 Bronco Sport vehicles equipped with a 1.5L engine built on or before 30-Nov-2022, 2021-2023 Bronco Sport vehicles equipped with a 2.0L engine built on or before 28-Feb-2022 or 2020-2022 Escape/Corsair non-plug in hybrid electric vehicle (PHEV) vehicles built on or before 30-Apr-2022 may exhibit a chatter/shudder during low speed turning events. This may be due to contamination of the rear drive unit (RDU) fluid through the RDU vent hose. To correct the condition, follow the Service Procedure to replace the RDU vent hose.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| TSB 23-2335 | Service bulletin | Oct 27, 2023 | 10244798 | PDF, 546 KB |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themFord 6 model years
Lincoln 3 model years
A vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
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What owners reported
Source: NHTSA complaint databaseOwners of the 9 model years this bulletin names have filed 4,205 complaints with NHTSA since 2015. 1,420 of them name Engine, Power Train — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
On the 2020 Ford Escape, the 78 owners who gave an odometer reading for Power Train reported it at a median of 46,000 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
Transmission realized a catastrophic and destructive failure. The vehicle immediately lost power and speed. Scattering debris and transmission fluid on the highway. Causing a safety concern for me and other drivers. Confirmed by a dealer. Inspected by the dealer. I experienced irregular transmission shifts and shuttering at times.
2021 Lincoln Corsair · Power Train · filed with NHTSA Nov 11, 2025 · ODI 11698723
In three occasions the automatic transmission has stopped working, operating under normal city driving conditions. Turning the car off and on again, it has worked properly. The car has less than 4000 miles. I took it to the Ford repair shop and there is a defect in the hybrid transmission, and it will take 4-6 weeks to be solved.
2020 Ford Escape · Power Train · filed with NHTSA Aug 16, 2021 · ODI 11429336
The wrench icon which refers to the Powertrain system keeps coming on. I received a message from the Ford pass system that there was (Fault) in the Powertrain system. That power was reduced. Further it said to see a dealer right away. All of the Ford Dealers in my area are all booked up
2022 Ford Bronco Sport · Power Train · filed with NHTSA Jul 19, 2022 · ODI 11474812
In depth: 2022 Ford Bronco Sport engine problems → · 2022 Ford Bronco Sport transmission and drivetrain problems → · 2021 Ford Bronco Sport engine problems → · 2021 Ford Bronco Sport transmission and drivetrain problems →
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the engine
Source: same model, same component group40 other manufacturer communications filed against these Ford models under the same component group (engine), newest first. The eight newest are listed; the rest are on the Ford list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| SSM 55283 | Service bulletin | Oct 27, 2026 | Some 2023-2024 Bronco Sport vehicles equipped with a 1.5L EcoBoost engine may exhibit an "Engine Coolant Over-Temperature" message and an il… |
| SSM 55211 | Over-the-air update | Oct 2, 2026 | 2023-2026 Escape and 2025-2026 Bronco Sport vehicles equipped with a 1.5L EcoBoost engine may require removal of the turbocharger wastegate… |
| SSM 55142 | Service bulletin | Sep 1, 2026 | Some 2023-2025 Escape vehicles built on or before 16-Sep-2024 equipped with 1.5L EcoBoost engine may exhibit an "Engine Coolant Over-Tempera… |
| 25M03 | Other | Aug 18, 2026 | Customer Satisfaction Program 25M03 Certain 2020-2025 Model Year Escape, 2021-2025 Model Year Corsair and 2022- 2025 Model Year Maverick Veh… |
| 25B33 | Other | Jun 1, 2026 | Certain 2023-2025 Model Year Escape and Corsair, 2024-2025 Model Year Nautilus, 2025-2026 Model Year Bronco Sport and 2025 Model Year Maver… |
| 25B51 | Other | May 9, 2026 | Certain 2021-2024 Model Year Bronco, 2021-2024 Model Year Bronco Sport, 2020-2022 Model Year Corsair and Escape, 2016-2024 Model Year Explor… |
| SSM 54631 | Service bulletin | Mar 6, 2026 | Some 2020-2026 Escape and 2022-2026 Maverick 2.5L Duratec hybrid vehicles may require various repairs on the exhaust system. This may requir… |
| SSM 54540 | Service bulletin | Jan 31, 2026 | Some 2025-2026 Escape/Bronco Sport vehicles equipped with a 1.5L EcoBoost engine may require replacement of the engine thermostat due to var… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Ford and Lincoln, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Ford TSB 23-2335 a recall?
No. A service bulletin is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the TSB 23-2335 repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way.
Which vehicles does TSB 23-2335 cover?
The manufacturer filed it against 9 model years across 2 brands (Ford and Lincoln): 2023 Ford Bronco Sport, 2022 Ford Bronco Sport, 2021 Ford Bronco Sport, 2022 Ford Escape, 2021 Ford Escape, 2020 Ford Escape and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.