TSB SU-6.4.0 — Ford Software update
SU-6.4.0 is a software update on file with NHTSA for 4 Ford models, 2021–2024 model years, filed and re-filed as 3 documents. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. "Quality improvements include: -Improved error logging and fault recovery for the Battery Health, Wheel Alignment, Wheel Vibration, and Key off load monitors."
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Worth checking your VIN against. SU-6.4.0 is filed as a software update, which unlike an ordinary bulletin can mean free or reimbursed work when a vehicle qualifies. Ask a dealer using the document ID below, and check open recalls separately at nhtsa.gov/recalls.
Vehicles and model years SU-6.4.0 names
| Vehicle | Model years |
|---|---|
| Ford Edge | 2021, 2022, 2023, 2024 |
| Ford F-250 | 2022 |
| Ford F-350 | 2022 |
| Ford Transit | 2024 |
Every document filed under SU-6.4.0
Manufacturers re-issue a bulletin as the repair changes, and file separate copies for technicians and for owners. All of them carry the same number.
| Document ID | Filed | Type |
|---|---|---|
| SU-6.4.0 Transit | August 8, 2025 | Software update |
| OTA SU 6.4.0 Super Duty | March 3, 2025 | Software update |
| 24-OTA SU 6.4.0 Edge | October 18, 2024 | Software update |
Questions buyers ask
What is TSB SU-6.4.0?
SU-6.4.0 is a software update filed with NHTSA by Ford, covering 4 Ford models across the 2021–2024 model years. NHTSA's summary reads: "Quality improvements include: -Improved error logging and fault recovery for the Battery Health, Wheel Alignment, Wheel Vibration, and Key off load monitors."
Which vehicles does SU-6.4.0 cover?
NHTSA's file names Ford Edge (2021–2024); Ford F-250 (2022); Ford F-350 (2022); Ford Transit (2024). A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.
Is TSB SU-6.4.0 a recall, and is the repair free?
SU-6.4.0 is filed as a software update, not a recall — but this is the kind of communication that can mean free or reimbursed work if your VIN qualifies. Take the number to a dealer and ask. Recalls are separate and always free; check yours by VIN at nhtsa.gov/recalls.
How do I get the full text of SU-6.4.0?
Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under SU-6.4.0, its date, and NHTSA's own summary from the public file.
Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. This page lists only what NHTSA's manufacturer-communications file records under SU-6.4.0. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.