Toyota Avalon 2019–2020 — technical service bulletin
Bulletin T-TT-0609-20 · NHTSA communication 10176492 · issued May 13, 2020
Technical service bulletin
communication type
Exterior Lighting
component
2019–2020
model years
2
vehicle entries
Official summary
TT: Some 2019 & 2020 model year Avalon & Avalon HV may exhibit abnormal, partial or 100% inoperative function of either the passenger side, driver side, or both LED1 Headlamp Day Time Running Lights (DRL). This may be caused by an internal fault in the headlamp assembly or DRL logic issue.
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.