Ford bulletin OTAPU0121FTDIFXF
What it saysQuality Improvements include: -Robustness action in operation of vehicle to detect low-state-of-charge battery and prevent engine stall, as well as provide improved warning to customers when low-state-of-charge… NHTSA’s full summary ↓
Ford filed this with NHTSA as a service bulletin dated Mar 11, 2024, received Apr 4, 2024, about the equipment. It names 2 model years (2022–2023). 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.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationQuality Improvements include: -Robustness action in operation of vehicle to detect low-state-of-charge battery and prevent engine stall, as well as provide improved warning to customers when low-state-of-charge conditions exist. -To prevent the potential incorrect On-board scales.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| OTAPU0121FTDIFXF | Service bulletin | Mar 11, 2024 | 10252706 | PDF, 46 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 themA 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 2 model years this bulletin names have filed 1,309 complaints with NHTSA since 2015. 313 of them name Electrical System — 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 2022 Ford F-150, the 26 owners who gave an odometer reading for Electrical System reported it at a median of 20,000 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
I turned on the truck and heard a loud crack followed by load static originating from the front passenger area. This was from the stereo speakers. My right ear endured a lasting and substantial amount of pain. I will estimate, based on measurements of SPL I've made as an engineer, that the crack was approximately 120dB
2022 Ford F-150 · Equipment · filed with NHTSA Oct 10, 2022
When I pressed Start yesterday a loud ear-splitting noise emitted from the sound system. It took my shocked brain a moment to realize it wasn't a security alert. When I realized nothing I did would get it to shut off, I got out of the vehicle. It eventually stopped, and the sound system doesn't work at all now.
2023 Ford F-150 · Equipment · filed with NHTSA Nov 11, 2023
1. The back up brake assistant is not working. This has been defective since August 2022. It caused me to have an accident running into a post, filing an insurance claim for repairs. I have taken it to 2 different Ford dealers for service and to get the back up brake fixed. No resolve from FORD. 2.
2022 Ford F-150 · Electrical System · filed with NHTSA Nov 16, 2022
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 equipment
Source: same model, same component group40 other manufacturer communications filed against the Ford F-150 under the same component group (equipment), newest first. The eight newest are listed; the rest are on the Ford list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| TSB 24-2126 | Service bulletin | Apr 29, 2024 | This article supersedes TSB 24-2093 to address the revised software and include affected 3.5L FHEV vehicles. Some 2021-2023 F-150 vehicles e… |
| TSB 24-2117 | Service bulletin | Apr 24, 2024 | Some 2024 F-150 non-Lightning vehicles equipped with minor feature codes C2BAW and FDDAA may exhibit an intermittent Trailer Brake System Fa… |
| SSM 52476 | Service bulletin | Apr 24, 2024 | All accessory stick-on keyless entry keypads come with a wallet card containing the master code. If the accessory keypad was factory install… |
| 24U04 | Service bulletin | Apr 19, 2024 | Certain 2024 Model Year F-150, F-150 Lightning, F-150 Raptor, 2024 Ranger, 2024 Ranger Raptor Enhanced Pre-Delivery Inspection (PDI) |
| SSM 52370 | Service bulletin | Mar 19, 2024 | Some 2023-2024 F-150 and 2024 Bronco/Transit vehicles may exhibit Apple Carplay Bluetooth connectivity concerns. This may be due to the acce… |
| OTAPU10246CHAUDF | Service bulletin | Mar 15, 2024 | Quality Improvements include: - Fix the infrequent random audio noises issue and improve the audio quality of the vehicle. |
| OTAPU102410CHAUF | Service bulletin | Mar 13, 2024 | Quality Improvements include: - Fix the no audio out of random speakers issue. |
| OTAPU0904PPOPRPF | Service bulletin | Mar 11, 2024 | Quality Improvements include: -Enhance the performance and stability of your driver display while towing. |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Ford, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Ford OTAPU0121FTDIFXF 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 OTAPU0121FTDIFXF 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 OTAPU0121FTDIFXF cover?
The manufacturer filed it against 2 model years: 2023 Ford F-150, 2022 Ford F-150. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.