Ford over-the-air update DDM-PDM-26.21.7
What it saysQuality improvements include: -Software update to improve responsiveness of the door control system after the vehicle enters a low-power state NHTSA’s full summary ↓
Ford filed this with NHTSA as an over-the-air update dated Sep 25, 2026, received Oct 2, 2026, about the electrical system — 1 document under this number: DDM-PDM-26.21.7 Exped&Nav. It names 6 model years across Ford and Lincoln (2025–2027). An over-the-air update is not a safety recall — there is no NHTSA campaign number and no federal requirement — but it is usually work the manufacturer pays for on the vehicles it names; the dealer checks the VIN against the manufacturer’s list.
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 communicationQuality improvements include: -Software update to improve responsiveness of the door control system after the vehicle enters a low-power state
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| DDM-PDM-26.21.7 Exped&Nav | Over-the-air update | Sep 25, 2026 | 11037820 | PDF, 23 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 3 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 6 model years this bulletin names have filed 58 complaints with NHTSA since 2015. 9 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.
This vehicle has been returned to service 5 times. It is currently in service for the same 4 issues that it was taken to service for the very first time on 12/10/2025. This includes inappropriate braking on the interstate, driver window malfunction, the key intermittently stops working, and the connectivity does not regularly work.
2025 Lincoln Navigator · Electrical System · filed with NHTSA Feb 2, 2026
This was a rental vehicle hybrid, while driving on a highway, the vehicle first developed a flat tire. Afterward, while the vehicle was in motion, smoke appeared and the vehicle caught fire spontaneously. There was no collision or impact of any kind. The driver pulled over and all passengers exited safely.
2025 Ford Expedition · Electrical System · filed with NHTSA Jun 12, 2026
In June 2025, I bought a new 2025 Ford Expedition King Ranch. While washing my SUV by hand, I discovered a manufacturing defect on the roof—Ford Manufacturing had left exposed welding and rivets. The issue is quite noticeable, with depressions around the rivets and welds so deep they could hold golf balls.
2025 Ford Expedition · Structure · filed with NHTSA Feb 2, 2026
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 electrical system
Source: same model, same component group162 other manufacturer communications filed against these Ford models under the same component group (electrical system), newest first. The eight newest are listed; the rest are on the Ford list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| SSM 55208 | Service bulletin | Sep 25, 2026 | Some 2024-2026 F-150, 2025 Explorer/Aviator, 2025-2026 Expedition/Navigator, or 2026 F-Super Duty vehicles may exhibit diagnostic trouble co… |
| SSM 55198 | Service bulletin | Sep 24, 2026 | Some 2025-2027 Navigator vehicles equipped with multi-contour seats (minor feature code BYBAL) may exhibit a condition where the second-row… |
| TCU-26.2.11.5 | Over-the-air update | Sep 24, 2026 | Quality improvements include: -Addresses key off load battery usage caused by the Telematics Control Unit's Wi-Fi not powering down properly… |
| SSM 55194 | Service bulletin | Sep 23, 2026 | Some 2021-2024 Mustang Mach-E, 2025-2026 Navigator and 2024 F-150 vehicles may exhibit inoperative welcome/approach detection lights. This m… |
| RCM-26.AD | Over-the-air update | Sep 22, 2026 | Quality improvements include: -Restraints Control Module update to implement robust power-on reset logic. |
| IPMA-26.11.0 | Over-the-air update | Sep 21, 2026 | 26S21 Recall remedy Infotainment system update to prevent rearview camera image interruptions |
| TCU-26.2.11.4 | Over-the-air update | Sep 16, 2026 | Quality improvements include: -Addresses key off load battery usage caused by the WiFi not powering down properly when the vehicle goes to s… |
| BCM-26.7.1 | Over-the-air update | Sep 16, 2026 | 26S29 Recall remedy: -Updates the Body Control Module to remove sun visor light operation in case of a short |
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 DDM-PDM-26.21.7 a recall?
No. A over-the-air update 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 DDM-PDM-26.21.7 repair free?
A over-the-air update is usually paid by the manufacturer on the vehicles it names, within the terms and time limit the document sets; the dealer checks the VIN against the manufacturer’s list.
Which vehicles does DDM-PDM-26.21.7 cover?
The manufacturer filed it against 6 model years across 2 brands (Ford and Lincoln): 2027 Ford Expedition, 2026 Ford Expedition, 2025 Ford Expedition, 2027 Lincoln Navigator, 2026 Lincoln Navigator, 2025 Lincoln Navigator. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.