Hyundai Sonata 2009–2010 — technical service bulletin
Bulletin 11-AT-003 · NHTSA communication 10037957 · issued Feb 1, 2011
Technical service bulletin
communication type
Power Train
component
2009–2010
model years
2
vehicle entries
Official summary
Hyundai: the procedure to update software on 2009-2010 sonata. Improves acceleration from a stop and deceleration on a cold engine. *rm
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.