Saturday, August 8, 2026
RecallGazette

Vehicle problems, recalls & safety intelligence

Lexus CT Hybrid 2013–2015technical service bulletin

Bulletin L-TT-0121-13 · NHTSA communication 10109391 · issued Nov 7, 2014

Technical service bulletin
communication type
Equipment
component
2013–2015
model years
30
vehicle entries

Official summary

TT: Refer to the chart below for a comprehensive list of the current and previously issued USB SSTs and their applicability. This is only a reference list of tools that might be in a dealership inventory and not meant to be a diagnostic or repair procedure. Generation 7 navigation systems use a USB SST to update the firmware and map. Generation 8 navigation system models use a USB stick to update the firmware ONLY.

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.