TSB 6AX, — Acura Service bulletin

6AX, is a service bulletin on file with NHTSA for the Acura TLX, 2015–2020 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.

What the bulletin says. "Customer letter - Under certain circumstances, after coming to a stop and the idle stop feature engages, the vehicle may not automatically restart. Acura is providing a product update with new PGM-FI software update to fix this issue. In addition, to ensure your confidence in…

NHTSA's own summary of the document, quoted from the public manufacturer-communications file.

1Document filed
1Vehicle named
6Model years

Vehicles and model years 6AX, names

VehicleModel years
Acura TLX 2015, 2016, 2017, 2018, 2019, 2020

Every document filed under 6AX,

Document IDFiledType
Defect Code 6AX, June 14, 2022 Service bulletin

What 6AX, covers

Electrical, Engine, Fuel system — the component vocabulary NHTSA files this communication under.

← All Acura TLX TSB years TSB lookup by model

Questions buyers ask

What is TSB 6AX,?

6AX, is a service bulletin filed with NHTSA by Acura, covering the Acura TLX across the 2015–2020 model years. NHTSA's summary reads: "Customer letter - Under certain circumstances, after coming to a stop and the idle stop feature engages, the vehicle may not automatically restart. Acura is providing a product update with new PGM-FI software update to fix this issue. In addition, to ensure your confidence in…

Which vehicles does 6AX, cover?

NHTSA's file names Acura TLX (2015–2020). 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 6AX, a recall, and is the repair free?

No. 6AX, 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 6AX,?

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 6AX,, its date, and NHTSA's own summary from the public file.

Data updated 2026-08-20 from NHTSA's public records

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 6AX,. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.