Toyota Sequoia (2005). Manual - part 888

START

Insert the key in the key cylinder.

Under registration

Registration completion

Remove the key.

Will you register the
next key?

No

Security indicator blinks until the first

key is inserted. The indicator comes

on after the key registration.

Security Indicator
OFF

END

Yes

Security Indicator ON 
(After the last key (sub–key) has been 
registered, the indicator remains OFF 
until the key is removed.  After the key 
is removed, the indicator blinks.)

–

BODY ELECTRICAL

ENGINE IMMOBILISER SYSTEM

BE–137

3541

ENGINE IMMOBILISER SYSTEM

REGISTRATION PROCEDURE

HINT:
If you lose all the registered master keys, you cannot registrar or delete additionally. Change the transponder
key ECU and then register the new key codes following the registration procedure of the automatic registra-
tion mode below.
1.

KEY REGISTRATION IN AUTOMATIC REGISTRATION MODE

(a)

Registration of a new transponder key.

HINT:

This procedure must be done when you install a new transponder key ECU.

The new transponder key ECU is in automatic key code registration mode. The key codes already fixed
for this transponder key ECU can be registered.
For this type of vehicle, up to 3 key codes can be registered.

In the automatic registration mode, the last key registered becomes a sub–key.

1.8 Sec.

0.2 Sec.

0.25 Sec. 0.5 Sec.

0.25 Sec.

1 Sec.

Blinks

Code 2–1

Code 2–2

0.25 Sec.

0.25 Sec.0.5 Sec.

1 Sec.

BE–138

–

BODY ELECTRICAL

ENGINE IMMOBILISER SYSTEM

3542

HINT:

When a key cannot be inserted in the key cylinder in automatic registration mode, the security indicator
always comes on.

When the immobilizer system operates normally and the key is pull out, the security indicator blinks.

When key code registration could not be performed in automatic registration mode, code 2–1 is output
from the security indicator and when the registered key in inserted, code 2–2 is output.

(b)

Automatic registration mode completion
If completing the mode forcibly when more than 1 key codes are registered in automatic registration
mode, perform the following procedures.
After 1 more key codes are registered with the master key, turn the ignition switch LOCK 

→

ON 5 times

within 10 secs. by inserting the registered key or without pulling the key out.

START

END

All doors closed. No key in the key cylinder.

Insert the registered master key in the key cylinder.

Ignition switch: LOCK 

→

 ON 5 times

Driver’s door: Open 

→

 Close 6 times

Remove the master key.

Insert the key to be registered in the key cylinder.

Keep ignition switch in ON position for 60 seconds or more.

Remove the master key.

Do you register another key?

Driver’s door: Open 

→

 Close

within
15 secs.

within
20 secs.

within
10 secs.

within
10 secs.

within
10 secs.

*6

*5

*4

*3

*2

*1

No

Yes

10 secs.
or 
more

–

BODY ELECTRICAL

ENGINE IMMOBILISER SYSTEM

BE–139

3543

2.

REGISTRATION OF ADDITIONAL MASTER KEY

 

AND SUB KEY

Do this operation to register an additional master key and sub key.

BE–140

–

BODY ELECTRICAL

ENGINE IMMOBILISER SYSTEM

3544

*1: Insert the master key into the key cylinder.
Turn the ignition switch to the LOCK 

→

 ON position 5 times within 15 seconds.

*2: Open and close the driver’s door 6 times within 20 seconds after completion of the previous operation.
*3: Remove the master key from the ignition switch and insert another key to be registered in the key cylinder
within 10 seconds after completion of the previous operation.
*4: Turn the ignition switch to the ON position and wait for 60 seconds or more, then key registration will be
completed.
*5: 10 seconds or more elapse after removal of the key or open and close the driver’s door, then key registra-
tion will be completed.
*6: When registering multiple keys, insert the key to be registered in the key cylinder.

HINT:

It is possible to register up to 4 master key codes including the registered key code.

It is possible to register up to 2 sub key codes including the registed key code.

When any operation time described above is over, registration mode completes.

When the next procedure is performed while the timer is working, the timer completes counting time,
then the next timer starts.