Prius Smartkey Programming

Smartkey Programming

The Prius Executive has 3 different codes within the key chip: anti-theft, remote locking, and SMART system. The Sol version has 2 codes, the SMART is not available. If a key is lost, or a new key is to be added, then the ECU must be reprogrammed to delete the lost key or add the new one. Both the Executive and Sol can be programmed with a maximum of 5 keys.

There are 2 ways to program the ECU. The first way, which most likely most users will choose is for the dealer to perform the programming using the Intelligent Tester 2. The second way is via a combination of steps as shown below. In all cases, except one, a pre programmed (Master) key is required. The exception is in the event that the ECU has been changed. I don’t think the majority of users are ever likely to encounter this situation, but the details are given for completeness.

NOTE: Use these codes at your own risk!

Automatic registration (New registration)

The registration of the key code occurs automatically after the key is inserted into the slot. In this mode, a maximum of two master keys can be programmed.

Note: This is a requirement after changing the transponder ECU. A new transponder ECU will switch automatically into this mode.

Notes:

1.  The anti theft light will remain lit in automatic mode until a key is inserted in the slot.

2.  A correctly working anti theft system will blink continuously whilst no key is in the slot. (1.8second interval)

3.  If the registration fails, code 2-1 is shown (2 x 0.25 second followed by 1 x 0.5 second flashes followed by 1 second off).

4.  If a registered key is reregistered, code 2-2 is shown (2 x 0.25 second followed by 2 x 0.5 second flashes followed by 1 second off).

5.  If too many keys are registered, code 2-3 is shown (2 x 0.25 second followed by 3 x 0.5 second flashes followed by 1 second off).

6.  The registration mode can be left after 1 key has been registered by placing the registered key in the slot and pressing the Power switch 5 x ON then OFF within 10 seconds.

Registering an extra key

The car must be in the following configuration.

Ø  No key in slot

Ø  All doors shut

Ø  Power OFF

Notes

1.  A maximum of 5 keys can be registered at any one time.

2.  If you exceed the given times then the registration will be aborted.

Delete all keys

The car must be in the following configuration.

Ø  No key in slot

Ø  All doors shut

Ø  Power OFF

Notes

1.  All codes except the Master key code will be deleted!

2.  If you exceed the given times then the registration will be aborted

Smart Entry

The Smartkey codes are identical with the codes of the remote control. After registration of a key code, the Smartkey system and remote door locks can be used. After replacing the Smartkey ECU or the smart keys, a reprogramming of the Smart Entry System is required.

The following modes are available.

1.  New registration mode: Used for a new Smartkey ECU

2.  Add mode: Add a new key

3.  Delete mode: Remove all keys except the master key. Use if a key is lost.

Whilst programming the system, keep all keys away from the car except the one being programmed; otherwise, the system will not be able to recognize the keys correctly.

Add a new or extra key

The car must be in the following configuration.

Ø  No key in slot

Ø  Drivers door open

Note

1.  In the instructions, which switch is meant by power switch at step 9 is not very clear due to On - Lock.