TSB ONL6C502142019 — Acura Service bulletin

ONL6C502142019 is a service bulletin on file with NHTSA for 2 Acura models, 2009–2013 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.

What the bulletin says. Owner Notification Letter - On certain 2009-14 Acura vehicles equipped with the 3.7L V6 engine, the oil control rings may become clogged with carbon deposits during normal engine operation. These deposits restrict the control ring's ability to return oil from the cylinder walls…

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

1Document filed
2Vehicles named
5Model years

Vehicles and model years ONL6C502142019 names

VehicleModel years
Acura MDX 2010, 2011, 2012, 2013
Acura TL 2009, 2010, 2011

Every document filed under ONL6C502142019

Document IDFiledType
ONL6C502142019 February 14, 2019 Service bulletin

What ONL6C502142019 covers

Engine — the component vocabulary NHTSA files this communication under.

← All Acura MDX TSB years TSB lookup by model

Questions buyers ask

What is TSB ONL6C502142019?

ONL6C502142019 is a service bulletin filed with NHTSA by Acura, covering 2 Acura models across the 2009–2013 model years. NHTSA's summary reads: Owner Notification Letter - On certain 2009-14 Acura vehicles equipped with the 3.7L V6 engine, the oil control rings may become clogged with carbon deposits during normal engine operation. These deposits restrict the control ring's ability to return oil from the cylinder walls…

Which vehicles does ONL6C502142019 cover?

NHTSA's file names Acura MDX (2010–2013); Acura TL (2009–2011). 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 ONL6C502142019 a recall, and is the repair free?

No. ONL6C502142019 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 ONL6C502142019?

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 ONL6C502142019, 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 ONL6C502142019. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.