TSB B20-053 — Acura Service bulletin
B20-053 is a service bulletin on file with NHTSA for 2 Acura models, 2019–2021 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. Service Bulletin - The MIL is flashing with a loss of power. This is most common in hot, humid regions, or after a period of rainfall. Humid air within the intake passage may condense and accumulate moisture during steady driving which enters the engine and may cause a misfire…
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years B20-053 names
Every document filed under B20-053
| Document ID | Filed | Type |
|---|---|---|
| B20-053 | March 12, 2024 | Service bulletin |
What B20-053 covers
Engine, Electrical — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB B20-053?
B20-053 is a service bulletin filed with NHTSA by Acura, covering 2 Acura models across the 2019–2021 model years. NHTSA's summary reads: Service Bulletin - The MIL is flashing with a loss of power. This is most common in hot, humid regions, or after a period of rainfall. Humid air within the intake passage may condense and accumulate moisture during steady driving which enters the engine and may cause a misfire…
Which vehicles does B20-053 cover?
NHTSA's file names Acura RDX (2019–2021); Acura TLX (2021). 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 B20-053 a recall, and is the repair free?
No. B20-053 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 B20-053?
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 B20-053, 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 B20-053. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.