TSB B23-004 — Acura Service bulletin
B23-004 is a service bulletin on file with NHTSA for 2 Acura models, 2019–2023 model years, filed and re-filed as 2 documents. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. Service Bulletin - A pop noise from the rear roof area occurs when turning into driveways, bumps, or on an incline. It was determined that, in some cases, the panoramic roof frame mounting bolts are unable to maintain the necessary clamp force. This can allow shifting, which may…
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years B23-004 names
Every document filed under B23-004
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 |
|---|---|---|
| B23-004 | October 17, 2025 | Service bulletin |
| B23-004 | January 17, 2024 | Service bulletin |
What B23-004 covers
Body & structure — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB B23-004?
B23-004 is a service bulletin filed with NHTSA by Acura, covering 2 Acura models across the 2019–2023 model years. NHTSA's summary reads: Service Bulletin - A pop noise from the rear roof area occurs when turning into driveways, bumps, or on an incline. It was determined that, in some cases, the panoramic roof frame mounting bolts are unable to maintain the necessary clamp force. This can allow shifting, which may…
Which vehicles does B23-004 cover?
NHTSA's file names Acura MDX (2022–2023); Acura RDX (2019–2023). 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 B23-004 a recall, and is the repair free?
No. B23-004 is repair guidance the manufacturer sent its dealers, not a safety defect finding. You pay for the work unless the vehicle is still under warranty. Recall repairs, by contrast, are always free.
How do I get the full text of B23-004?
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 B23-004, 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 B23-004. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.