Saturday, August 8, 2026
RecallGazette

Vehicle problems, recalls & safety intelligence

Toyota Avalon 2001–2017 — technical service bulletin

Bulletin T-TT-0365-15 Rev · NHTSA communication 10131769 · issued Feb 2, 2017

Technical service bulletin
communication type
Electrical System
component
2001–2017
model years
59
vehicle entries

Official summary

TT: A vehicle may arrive to the dealer with a MIL ?ON? condition and P0A80 or P1AC000 stored in the memory. Some cases have been identified with internal modification done to the HV Battery. Modified or altered parts are not covered under warranty.

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.