Toyota 4RUNNER 2020–2021 — technical service bulletin
Bulletin TSB008521Rev2 · NHTSA communication 10220166 · issued May 25, 2022
Technical service bulletin
communication type
Equipment
component
2020–2021
model years
2
vehicle entries
Official summary
OBSOLETE NOTICE May 25, 2022: This bulletin is now obsolete. Please see T-SB-0051-22
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.