Toyota Yaris 2019 — technical service bulletin
Bulletin T-TT-0513-18 · NHTSA communication 10152177 · issued Nov 9, 2018
Technical service bulletin
communication type
Wheels
component
2019
model years
1
vehicle entries
Official summary
TT: 1) Lug nut size change from 21 mm to 17mm was implemented on 9/10/2018. 2) The 21mm wheel locking nut will not work with the OE wrench (since it is for 17mm nuts).
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.