TSB B23-002 — Acura Service bulletin
B23-002 is a service bulletin on file with NHTSA for the Acura MDX, 2016–2020 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 - Under certain circumstances, after coming to a stop and engaging idle stop the vehicle may not restart automatically due to excessive cylinder pressure and/or low cranking torque. Typically, the client can immediately restart the vehicle by selecting Park and…
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years B23-002 names
Every document filed under B23-002
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 |
|---|---|---|
| B23-002 | July 7, 2025 | Service bulletin |
| B23-002 | March 20, 2023 | Service bulletin |
What B23-002 covers
Engine, Electrical — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB B23-002?
B23-002 is a service bulletin filed with NHTSA by Acura, covering the Acura MDX across the 2016–2020 model years. NHTSA's summary reads: Service Bulletin - Under certain circumstances, after coming to a stop and engaging idle stop the vehicle may not restart automatically due to excessive cylinder pressure and/or low cranking torque. Typically, the client can immediately restart the vehicle by selecting Park and…
Which vehicles does B23-002 cover?
NHTSA's file names Acura MDX (2016–2020). 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 B23-002 a recall, and is the repair free?
No. B23-002 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 B23-002?
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 B23-002, 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 B23-002. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.