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

Bulletin number

TSB011120Rev1

Component

Engine and engine cooling: engine: engine control module (ecu/ECM)

Summary

TSB: 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 Techstream 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 258 complaints in the engine category.