Registration (Additional Key)

NOTE: This article contains changes called out by TSB# EL008R-004.


The following procedure should be used to add an additional Smart Key (Immobilizer and Smart/Wireless functions) to the 2004 and 2005 model year Prius.




Required SSTs

REGISTRATION PROCEDURE
1. Make sure that the key to be registered has a silver Toyota logo and has never been registered to another vehicle.
2. Place the vehicle in an area that is free from radio frequency interference (i.e., away from any power lines, laser wheel alignment machines, etc.).
3. Turn off or remove from the vehicle interior any wireless communication devices (i.e., cell phones, text pagers, etc.) and all other non-factory electrical accessories.




4. Insert a registered Smart Key into the key slot with the buttons facing up.
5. With your foot OFF of the brake pedal, cycle the vehicle Power button 2 times.
6. Connect Diagnostic Tester to DLC3.
7. If the Diagnostic Tester backlighting is ON, use the screen flow below to turn it "OFF" to prevent possible signal interference. If backlighting is already OFF, proceed to step 8.




A. Turn the Diagnostic Tester power ON and follow the screen flow shown.
B. Turn the Diagnostic Tester power OFF and back ON.

Registration Procedure: Immobilizer Function
8. Register the Immobilizer function.
A. Follow the Diagnostic Tester screen flows below. This procedure works best if you use the instructions under the "DO THIS" column and use the screen prints to know WHEN to perform the instructions only.
B. Verify that a programmed master key is in the key slot and the ignition is ON.

A - D:

E - H:

I - L:

M - P:

Registration Procedure: Smart Key/Wireless Function
9. Register the Smart Key/Wireless function.
A. From the Immobilizer ID Utility menu (previous), Press the Diagnostic Tester "EXIT" button twice to bring up the OBD/MOBD Menu.
B. Follow the screen prints below.

A - D:

E - H:

I - J: