Acura TL 2012–2014 — technical service bulletin
Bulletin B18-048 · NHTSA communication 10145423 · issued Sep 28, 2018
Technical service bulletin
communication type
Power Train
component
2012–2014
model years
3
vehicle entries
Official summary
Service bulletin - After the software update, some vehicles, based on how they are driven (extreme conditions), may still experience ATF deterioration after updating the PGM-FI or A/T system and the shudder may return. The problem is typically diagnosed as a bad Torque Converter (TC). There is no damage to the TC, but because the ATF has deteriorated, it needs to be changed even though the "ATF Service Due" message has not appeared. Make sure the vehicle is updated by referring to the INSPECTION PROCEDURE.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.