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RecallGazette

Vehicle problems, recalls & safety intelligence

Toyota 4RUNNER 2021–2025 — technical service bulletin

Bulletin T-SB-0011-25 · NHTSA communication 11014190 · issued Jan 23, 2025

Technical service bulletin
communication type
Electrical System
component
2021–2025
model years
60
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

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.