2021 Acura TLX defect investigations

Investigations by NHTSA’s Office of Defects Investigation that name the 2021 Acura TLX. An investigation is how complaints can become a recall: complaints → investigation → (sometimes) TSB → recall.

• All wheel drive allegation
  Defect Petition DP26001 · opened Mar 6, 2026 · closed Aug 4, 2026

  The Office of Defects Investigation (ODI) has completed its review of a Petition dated January 9, 2026, requesting an investigation into the loss of the optional all-wheel drive capability in model year (MY) 2021-2023 Acura TLX and MY 2022-2023 Acura MDX vehicles. The Petition alleges failures in the interfacing spline…

• No Restart After Auto Start/Stop Engages
  Engineering Analysis EA25004 · opened Mar 26, 2025 · still open

  On June 3, 2022, the Office of Defects Investigation (ODI) opened Preliminary Evaluation PE22005 after the agency received VOQs and several field reports concerning the Auto Idle Stop (AIS) feature on 2016-2019MY Honda Pilot vehicles. The complaints allege that the engine fails to restart on its own from a complete stop a…