When certain vehicle ECUs are replaced, the ECU Security Key must be written in order for that ECU to...

Bulletin number

T-SB-0011-25 (T-SB-0011-25)

Component

Electrical system

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.

Owners of these vehicles have filed 557 complaints in the electrical category.