Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Update Ecu Security Key

UPDATE ECU SECURITY KEY

NOTICE:

  • It is necessary to log in to the Toyota server to perform an ECU security key update.
  • Users other than Toyota dealers can log in with a guest account issued when an ECU is ordered.

UPDATE ECU SECURITY KEY

(a) Enter the following menus: System Select / Health Check.

(b) Check whether "ECU Security Key: Necessary" is displayed in the upper right corner of the GTS screen.

*a

GTS Health Check Screen

*b

"ECU Security Key: Necessary"

(c) If "ECU Security Key: Necessary" is displayed, follow the prompts on the GTS screen to update the ECU security key.

*a

GTS Health Check Screen

*b

Perform ECU Security Key Update Icon

(d) When the ECU security key update is completed, enter the following menus: System Select / Health Check.

(e) Check that "ECU Security Key: -" is displayed, and clear the RoB.

*a

GTS Health Check Screen

*b

"ECU Security Key: -"

NOTICE:

If "ECU Security Key: Necessary" is displayed in the upper right corner of the GTS screen, perform the ECU security key update again.

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