Hyundai Sonata 2018 — technical service bulletin
Bulletin 5NP-T2E9H-09 · NHTSA communication 10144432 · issued Aug 9, 2018
Technical service bulletin
communication type
Electrical System
component
2018
model years
1
vehicle entries
Official summary
Hyundai Motor America is conducting a Service Campaign to update the TCU software on certain 2018 Model Year Sonata 2.4L vehicles. Service Campaign T3B provides a procedure to update the TCU software.
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.