DOES ANYONE KNOW HOW I CAN DO TO PROGRAM A KEY I BOUGHT FOR MY LEXUS RX300?

THE KEY IS A MASTER KEY BUT IT'S NOT PROGRAMMED FOR THE CAR, IT WILL NOT START OR UNLOCK THE DOORS.

THANKS
LEO.

Not sure if this works on the RX, should do on the series I models.

For the immobiliser try this:

1. Enter the car with a working pre-programmed key and close all doors. Simultaneously depress and release both the brake and the accelerator pedals.
2. Within 5 seconds, insert the working pre-programmed key into the ignition. Do not turn the key.
3. Within 15 seconds of inserting the ignition key, depress and release the accelerator pedal 5 times.
4. Within 20 seconds, depress and release the brake pedal 6 times.
5. Within 10 seconds, remove the working pre-programmed key from the ignition.
6. Within 10 seconds, insert the newly cut transponder key into the ignition.
7. Depress and release the accelerator pedal one time. The security light should now begin flashing to indicate that the computer is reading the new key and programming the system.
8. Leave the new key in the ignition for at least 60 seconds. When the security light stops flashing, the programming process should be complete.
9. Start the vehicle using the new key to verify that programming was successful.



For the central locking/alarm try this:
MODES OF REGISTRATION (PROGRAMMING)

There are 4 registration modes:

Add Mode:
Adds a transmitter without erasing existing transmitter
codes. Four transmitter codes can be registered at one time. If number
of registered codes exceeds 4, previously registered codes are erased
in order, starting with first registered code.

Rewrite Mode:
Erases all previously registered transmitter codes and
reprogram new transmitters.

Confirmation Mode:
Informs user of number of existing transmitter codes already
programmed in system.


Prohibition Mode:
Erases all existing registered transmitter codes and cancels wireless
door lock operation. Use this function if transmitter is lost or stolen.

Registration Of Recognition Code:
1. To begin programming, remove key from ignition switch.
Ensure driver’s door is open and unlocked, and all other doors are
closed. Insert key into ignition switch, and then remove it. Go to
next step.
2. Complete the following in 40 seconds or less: press door
lock switch to LOCK position, and then within one second, press door
lock switch to UNLOCK position. Repeat procedure continuously until
door locks have been locked and unlocked 5 times. Close, and then open
driver’s door. Go to next step.
3. Complete the following in 40 seconds or less: repeat
procedure in step (2), except~ for closing and opening driver’s door.
Insert key into ignition switch. To enter desired mode, turn ignition
switch to ON position and back to LOCK position (one cycle), within
one second, the specified number of times. See REGISTRATION MODE
SELECTION table. Remove key from ignition switch. Go to next step.
REGISTRATION MODE SELECTION

Registration Mode No. Of Ignition Switch Cycles
---------------------------------------
Add - 1
Rewrite - 2
Confirmation -3
Prohibition - 5
---------------------------------------

4. If any mode other than confirmation mode is selected, go
to next step. If confirmation mode was selected, door locks will cycle
0-4 times depending on how many transmitter codes are stored in ECU.
Example: two stored codes equals 2 door lock/unlock cycles.
Registration of confirmation code is complete after door locks cycle.
5. Complete the following in 40 seconds or less: if add mode,
rewrite mode or prohibition mode is selected, to confirm proper
initiation, door locks will automatically cycle one time for add mode,
2 times for rewrite mode and 5 times for prohibition mode. Press
transmitter LOCK and UNLOCK buttons simultaneously for at least 1.5
seconds, and then within 3 seconds, press any transmitter button for
at least one second. Go to next step.
6. If within 3 seconds, door locks’ cycle one time, new
transmitter code has been successfully accepted. Go to next step. If
door locks cycle 2 times, new transmitter code was not accepted. To
program an additional transmitter or to make a second attempt, return
to step (5) within 40 seconds.
7. Registration of recognition codes is complete under any of
the following conditions:

* Forty seconds has elapsed since wireless door lock ECU has responded.
* Driver’s door is closed.
* Key is inserted in the ignition key cylinder.
* Four recognition codes are registered at one time.



Let me know how you get on,
Colin

Hey Colin,

I'm glad you posted this so long ago. It enabled me to successfully program a new key for my RX300 Series 1 (2001) - I hope you don't mind me adding the following comments which may save the next person a few more grey hairs

Immobiliser
Step 7.
The Security light flashing is exactly the same rate as when there is no key in the ignition.

Remote
Step 3. Complete the following in 40 seconds or less: repeat
procedure in step (2), except~ for closing and opening driver’s door.

Step 3A.
Insert key into ignition switch. To enter desired mode, turn ignition
switch to ON position and back to LOCK position (one cycle), within
one second, the specified number of times. See REGISTRATION MODE
SELECTION table. Remove key from ignition switch. Go to next step.


The rest as-is...

'Guv

I can't get the immobiliser process to work on my RX (series 2), anybody had any luck or can tell me the correct process?

Thanks in advance.

Thanks for the info Colin.

Followed your steps to the letter and am now the proud owner of a second master key and a Nintendo Wii. ( used the money I saved going to Lexus to treat the kids !!!) Cheers