TSB B28518 — Acura Software update
B28518 is a software update on file with NHTSA for the Acura MDX, 2025–2026 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. Over the Air System Update - System updates contain upgrades that fix operational errors and/or provide a variety of enhancements, which adds new functionality. Information about the various software releases can be found in this document.
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Worth checking your VIN against. B28518 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 B28518 names
Every document filed under B28518
| Document ID | Filed | Type |
|---|---|---|
| B28518 | January 17, 2026 | Software update |
What B28518 covers
Electrical — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB B28518?
B28518 is a software update filed with NHTSA by Acura, covering the Acura MDX across the 2025–2026 model years. NHTSA's summary reads: Over the Air System Update - System updates contain upgrades that fix operational errors and/or provide a variety of enhancements, which adds new functionality. Information about the various software releases can be found in this document.
Which vehicles does B28518 cover?
NHTSA's file names Acura MDX (2025–2026). 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 B28518 a recall, and is the repair free?
B28518 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 B28518?
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 B28518, 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 B28518. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.