Toyota Avalon 2012–2015 — technical service bulletin
Bulletin T-TT-0277-13 · NHTSA communication 10109388 · issued Nov 12, 2014
Technical service bulletin
communication type
Steering
component
2012–2015
model years
7
vehicle entries
Official summary
TT: VSC MIL "ON" with DTC C1433. Steering angle value in ABS/TRAC ECU is -1044 or 1044 degrees and does not change as steering wheel is turned.
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.