Toyota Tundra. Manual — part 12

transponder key ECU.

CODE REGISTRATION DESCRIPTION

d. After replacing the transponder key ECU and ECM.

1. Register the ECU - ECM COMMUNICATION ID between the new ECM and the new

transponder key ECU.

CODE REGISTRATION DESCRIPTION

e. Erasure of key codes.

1. Erase all of the key codes except master key.

CODE REGISTRATION DESCRIPTION

2. Erase all of the key codes.

CODE REGISTRATION DESCRIPTION

18. NEW KEY REGISTRATION (PROCEDURE "B")

a. New key code registration

HINT:



This mode operates normally when no key codes are registered in the transponder key ECU.



When a new transponder key ECU is installed, key codes must be registered in the
transponder key ECU.



In this mode, a maximum of 3 key codes for 2 master keys and 1 sub-key can be registered.
The master keys and sub-key can be registered in any order because the transponder key
ECU can distinguish between different types of keys.



New key codes must be registered with the battery connected. The ignition switch can be
either ON or OFF.

NEW KEY REGISTRATION PROCEDURE

Target ECU

See Procedure

Transponder key ECU Procedure "C"

Target ECU

See Procedure

Transponder key ECU Procedure "C"

Target ECU

See Procedure

Transponder key ECU Procedure "D"

Target ECU

See Procedure

Transponder key ECU Procedure "D"

Procedure

Security Indicator Light Condition

2009 Toyota Tundra

2009 GENERAL INFORMATION Introduction - Tundra

b. End the new key code registration mode (when not using Techstream)

HINT:

The automatic key code registration mode can be forced to end when at least 1 key code
(immobilizer code) for a master key has been registered.

1. Turn the ignition switch ON and OFF 5 times within 10 seconds using a master key that has

already been registered.

c. End the new key code registration mode (when using Techstream)

HINT:

The automatic key code registration mode can be forced to end when at least 1 key code
(immobilizer code) for a master key has been registered.

1. Insert the key into the ignition key cylinder and turn the Techstream ON.

1. Start registration.

Security indicator light is blinking.

2. Insert one of master keys into the
ignition key cylinder.

Security indicator light turned on.

3. Select following items on the
tester:

1. Body

2. Immobilizer

3. ID Utility

4. Immobilizer Code Registration

HINT:
After above operation, proceed to
next step in accordance with prompts
on the tester screen.

Security indicator light turned off for 1 sec. and then turned
on.

4. Remove the key.

Security indicator light turned on.
HINT:
When the maximum number of the key codes is registered,
the security indicator light remains off until the last key
registered is removed. After it is removed, the security
indicator light starts blinking.

5. Register another key?
YES: Go to step 6.
NO: Go to step 7.
HINT:
Key codes for a maximum of 2
master keys and 1 sub-key can be
registered.
6. Insert another key into the ignition
key cylinder. Then go to step 4.

Security indicator light turned off for 1 sec. and then turned
on.

7. End of registration.

2009 Toyota Tundra

2009 GENERAL INFORMATION Introduction - Tundra

2. Follow the instructions on the Techstream screen to end the new key code registration mode.

Fig. 36: Security Indicator Light Timing Table
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

HINT:



When the engine immobilizer system is operating normally and the key is pulled out,
the security indicator light blinks continuously.

2009 Toyota Tundra

2009 GENERAL INFORMATION Introduction - Tundra



If the new key code registration fails, code 2-1 is output by the security indicator light.
Trying to reregister an already registered key causes code 2-2 to be output when the
key is inserted. If the number of registered key codes exceeds the limit, code 2-3 is
output by the security indicator light. The output details are shown below.

19. REGISTRATION OF ADDITIONAL KEY (PROCEDURE "A")

a. Additional key code registration

HINT:



At least one key code must be registered in the transponder key ECU in order for this mode
to operate normally.



In this mode, a maximum of 5 master key codes and 3 sub-key codes can be registered.



This mode ends if each step is not completed within the specified time.



When the ignition key cylinder or the ignition key cylinder set is replaced, remove the
transmitter module from the original master key. Then install this transmitter module to a
new key and use the new key as the master key. If necessary, use this master key to register
other keys.

PROCEDURE FOR REGISTRATION OF ADDITIONAL KEY

NOTE:

When only the ignition key cylinder has been replaced, the new key
cannot be used to lock or unlock doors. Therefore, keep the original
key for locking and unlocking doors in order to avoid being locked
out of the vehicle if the transmitter battery becomes depleted.

Procedure

Security Indicator

Light Condition

Time (Completion of

operation)

1. Start registration.

Security indicator
light is blinking.

-

2. Insert an already registered master key into the
ignition key cylinder, turn the ignition switch ON,
and turn the tester ON.

Security indicator
light turned off.

Within 120 sec.

3. Select following items on the tester:

1. Body

2. Immobilizer

3. ID Utility

4. Immobilizer Code Registration

Security indicator
light turned on.

4. Remove the master key and then push NEXT
button on tester.

Security indicator
light turned on.

Within 20 sec. of the

instruction on the

tester.

5. Insert unregistered key into the ignition key
cylinder.

Security indicator
light is blinking.
HINT:
Registration is

Within 10 sec.

2009 Toyota Tundra

2009 GENERAL INFORMATION Introduction - Tundra