Lexus GX 2023–2025 — technical service bulletin
Bulletin L-SB-0035-22 Rev2 · NHTSA communication 11014191 · issued Jan 23, 2025
Technical service bulletin
communication type
Electrical System
component
2023–2025
model years
31
vehicle entries
Official summary
When certain vehicle ECUs are replaced, the ECU Security Key must be written in order for that ECU to communicate on the vehicle network. The GTS+ Software Health Check Results screen has been enhanced to help identify if a replacement ECU requires an ECU Security Key.
Vehicles covered
- 2024 Lexus GX
- 2025 Lexus GX
- 2023 Lexus LS
- 2024 Lexus LS
- 2025 Lexus LS
- 2023 Lexus LS Hybrid
- 2024 Lexus LS Hybrid
- 2025 Lexus LS Hybrid
- 2023 Lexus LX
- 2024 Lexus LX
- 2025 Lexus LX
- 2025 Lexus Non-Existant UX
- 2023 Lexus NX
- 2024 Lexus NX
- 2025 Lexus NX
- 2023 Lexus NX Hybrid
- 2024 Lexus NX Hybrid
- 2025 Lexus NX Hybrid
- 2023 Lexus RX
- 2024 Lexus RX
- 2025 Lexus RX
- 2023 Lexus RX Hybrid
- 2024 Lexus RX Hybrid
- 2025 Lexus RX Hybrid
- 2023 Lexus RZ
- 2024 Lexus RZ
- 2025 Lexus RZ
- 2024 Lexus TX
- 2025 Lexus TX
- 2024 Lexus TX Hybrid
- 2025 Lexus TX Hybrid
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.