Toyota Sienna 2011–2014 — technical service bulletin
Bulletin E0N_Expired LSC_ · NHTSA communication 10132692 · issued Oct 23, 2017
Technical service bulletin
communication type
Equipment
component
2011–2014
model years
4
vehicle entries
Official summary
TI: Technical Instructions for Limited Service Campaign E0N Driving Support ECU Certain 2011-2014 Model Year Sienna.
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.