LS430 programming transponder
04-13-17, 12:05 PM
#16
How to program remote 2003
I am looking for instructions on how to program a new remote on my key. I found how to on smart keys and 2004 up but not on 2003 non smart key. Any help would be appreciated. Thank you in advance.
04-13-17, 03:06 PM
#17
Lexus Champion
https://www.clublexus.com/forums/ls-...ansponder.html
05-04-18, 05:49 AM
#18
Driver School Candidate
Hi
Cant program key.
I already do remote programing, and its working fine.
When I do key programing, I notice the blinking light change the pattern but never go off.
Any suggestion???
Thanks
Cant program key.
I already do remote programing, and its working fine.
When I do key programing, I notice the blinking light change the pattern but never go off.
Any suggestion???
Thanks
05-26-18, 12:03 PM
#19
Driver School Candidate
Join Date: Apr 2018
Location: ct
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Just programmed new eBay purchased and locally cut key. MY ADVICE::::Have someone help you the instructions because they are frustrating. When the yelling and screaming is done (because you took out the master when you were not suppose to or one of the other steps screw up)---- you will feel a wonderful sense of victory and joy, just like climbing Everest. I do not know why Lexus made it so difficult but if you find yourself and an unsuspecting partner wondering what to do for an hour or so....this will fill that desire. Enjoy....
05-28-18, 09:44 AM
#20
Driver School Candidate
i posted this awhile back when i purchased my used 2002 LS430. Took some decipering of other posts, but finally got this sequence to work on ALL of my keys!
Security Immobilizer Programming. Start Engine. (TTT notes)
1. Have all windows up and doors shut.
2. Stand outside the vehicle.
3. From outside, Lock the doors with the original working master key by pressing LOCK button.
4. From outside, Unlock the driver’s door with the original working master key by pressing UNLOCK once.
5. Enter the vehicle, and close the driver’s door. Press the lock button (by the window switches) once to lock the doors.
6. Start the car for about 5 seconds, then turn the car off, and remove the original working master key.
7. Insert the original working master key back into the ignition.
8. Within 35 seconds, do the following (Make these next moves very precise and without any variation in your motions, which seemed to help):
a) Turn the key to the ACC position, being careful not to turn too far. (key in ACC position)
b) Turn the key from ACC to ON position five times ending in the ACC position. (ON ACC, ON ACC, ON ACC, ON ACC, ON ACC); do this somewhat quickly in about 1 second cycles for each ON ACC motion.
c) Open and Close the driver's door SIX times. (Open Close Open Close Open Close Open Close Open Close Open Close). Do not unlock the door with the button – just pull the handle and the door will unlock during your first Open.
d) Remove the original master key
9. Within 10 seconds insert New Key into the ignition, and turn to "ON".
10. Leave the New Key inserted until the red security light stops flashing (mine took about 60 seconds; other posts say up to 90 – 120 seconds).
11. After the flashing stops, remove New Key from ignition.
12. Depress the brake pedal forcefully ONCE to exit the programming mode.
13. Wait 15 seconds to allow the computer to reset.
14. Test New Key by inserting into ignition. The red security light should go off. Attempt to start the vehicle.
These steps FINALLY worked for me!!! Good luck!!! TTT
Security Immobilizer Programming. Start Engine. (TTT notes)
1. Have all windows up and doors shut.
2. Stand outside the vehicle.
3. From outside, Lock the doors with the original working master key by pressing LOCK button.
4. From outside, Unlock the driver’s door with the original working master key by pressing UNLOCK once.
5. Enter the vehicle, and close the driver’s door. Press the lock button (by the window switches) once to lock the doors.
6. Start the car for about 5 seconds, then turn the car off, and remove the original working master key.
7. Insert the original working master key back into the ignition.
8. Within 35 seconds, do the following (Make these next moves very precise and without any variation in your motions, which seemed to help):
a) Turn the key to the ACC position, being careful not to turn too far. (key in ACC position)
b) Turn the key from ACC to ON position five times ending in the ACC position. (ON ACC, ON ACC, ON ACC, ON ACC, ON ACC); do this somewhat quickly in about 1 second cycles for each ON ACC motion.
c) Open and Close the driver's door SIX times. (Open Close Open Close Open Close Open Close Open Close Open Close). Do not unlock the door with the button – just pull the handle and the door will unlock during your first Open.
d) Remove the original master key
9. Within 10 seconds insert New Key into the ignition, and turn to "ON".
10. Leave the New Key inserted until the red security light stops flashing (mine took about 60 seconds; other posts say up to 90 – 120 seconds).
11. After the flashing stops, remove New Key from ignition.
12. Depress the brake pedal forcefully ONCE to exit the programming mode.
13. Wait 15 seconds to allow the computer to reset.
14. Test New Key by inserting into ignition. The red security light should go off. Attempt to start the vehicle.
These steps FINALLY worked for me!!! Good luck!!! TTT
05-28-18, 09:45 AM
#21
Driver School Candidate
and for the keyless entry . . .
Keyless Entry Programming. Lock. Unlock. Trunk. (TTT notes)
1. Sit inside the car. Close the driver’s door. All other doors closed also.
2. Lock the doors with the lock button.
3. Start the car with the original working master key. Wait a few seconds. Turn off the car and remove the original working master key.
4. Open the driver’s door by pulling on the handle. Do not unlock with the button or manually unlock. Just pull the handle and Open the door. Driver’s door is now Open.
5. Within 5 seconds, Insert and Remove the original working master key from the ignition switch TWICE. (In Out In Out).
6. Within several seconds, Close and Open the driver’s door TWICE. (Close Open Close Open).
7. Insert and Remove the original working master key from the ignition switch. (In Out).
8. Close the driver’s door. (Close).
9. Within several seconds, Open and Close the driver’s door TWICE, adding one final Open. (Open Close Open Close Open).
10. Insert original working master key into the ignition switch.
11. Close the driver’s door. (Close).
12. Switch ignition ON then OFF ONE TIME only - this will put the car in ADD mode.
13. Remove the original working master key from the ignition.
14. System should now Lock and Unlock vehicle one time automatically.
15. Within several seconds, on the new key being programmed, press and hold UNLOCK button followed immediately with LOCK button so that you are holding down both buttons at the same time. Hold them for a few seconds. Release the buttons. (The original instructions indicate to depress the buttons simultaneously, which did not seem to work for me after several tries, so I varied how to push the buttons.)
16. Within 3 seconds, press and release UNLOCK button.
17. System should now Lock and Unlock the car once to confirm registration of the new key. (or twice to indicate registration has failed per the original post)
18. Exit programming mode by opening driver’s door.
19. Test Keyless Entry functions on the new key. Lock. Unlock. Trunk.
These steps FINALLY worked for me!!! Good luck!!! TTT
Keyless Entry Programming. Lock. Unlock. Trunk. (TTT notes)
1. Sit inside the car. Close the driver’s door. All other doors closed also.
2. Lock the doors with the lock button.
3. Start the car with the original working master key. Wait a few seconds. Turn off the car and remove the original working master key.
4. Open the driver’s door by pulling on the handle. Do not unlock with the button or manually unlock. Just pull the handle and Open the door. Driver’s door is now Open.
5. Within 5 seconds, Insert and Remove the original working master key from the ignition switch TWICE. (In Out In Out).
6. Within several seconds, Close and Open the driver’s door TWICE. (Close Open Close Open).
7. Insert and Remove the original working master key from the ignition switch. (In Out).
8. Close the driver’s door. (Close).
9. Within several seconds, Open and Close the driver’s door TWICE, adding one final Open. (Open Close Open Close Open).
10. Insert original working master key into the ignition switch.
11. Close the driver’s door. (Close).
12. Switch ignition ON then OFF ONE TIME only - this will put the car in ADD mode.
13. Remove the original working master key from the ignition.
14. System should now Lock and Unlock vehicle one time automatically.
15. Within several seconds, on the new key being programmed, press and hold UNLOCK button followed immediately with LOCK button so that you are holding down both buttons at the same time. Hold them for a few seconds. Release the buttons. (The original instructions indicate to depress the buttons simultaneously, which did not seem to work for me after several tries, so I varied how to push the buttons.)
16. Within 3 seconds, press and release UNLOCK button.
17. System should now Lock and Unlock the car once to confirm registration of the new key. (or twice to indicate registration has failed per the original post)
18. Exit programming mode by opening driver’s door.
19. Test Keyless Entry functions on the new key. Lock. Unlock. Trunk.
These steps FINALLY worked for me!!! Good luck!!! TTT
03-13-20, 10:37 PM
#22
Here is the key programming info for your 2003 LS430 with remote programming info as well.
Let me know if it works.....DanozLS430
Key Programming
1. Close all doors.
2. Insert an already programmed master key into the ignition.
3. Turn the key from the OFF to On and back OFF FIVE (5) times.
4. Open and close the drivers door SIX (6) times.
5. Remove the key from the ignition.
6. Insert the new key you want to program into the ignition.
7. Wait 1 minute. The security light will be blinking for this one minute. When it stops blinking your key is programmed. To end programming step on the brake one time.
NOTE: You have 35 seconds to complete steps 1-5 and 10 seconds to complete step 6. If you do not do this procedure fast enough the car will not go into programming mode and your key will not program.
If the security light does not go out after 1 minute start the procedure over again.
I found these instructions as well. I am going to try this evening. The only difference is in step 16 where this version says to press the LOCK button instead of UNLOCK
Remote Programming
1. Close and lock all doors. Unlock and open drivers door.
2. Put key into ignition and remove TWO TIMES.
3. Close and open the drivers door TWO TIMES.
4. Put key into the ignition and remove.
5. Close and open the drivers door two times.
6. Put key into the ignition. Close the drivers door.
7. Turn ignition ON then OFF ONE TIME- this will put the car in ADD mode for your remote. (Turning the ignition ON then OFF TWO TIMES will ADD the remote but will erase all existing remotes.)
8. Remove the key from the ignition. The door locks will cycle one time (or two if you are erasing) . On the REMOTE press and hold the LOCK and the UNLOCK button for 2 seconds. On the REMOTE press the LOCK button for one second.
AT THIS POINT, the locks should cycle by themselves ONE time. This means the procedure was accepted. IF the locks cycle twice it has failed. IF this happens you must start over. Hold the remotes higher up for better reception
9. Open and close the drivers door. Put key in ignition and pull out. This will end
programming.
Edit: this worked for me. In the end it locked and unlocked twice which according to the instructions means it was unsuccessful, however it was successful because the key works great. Seems there are some subtle errors in the original instructions above.
Let me know if it works.....DanozLS430
Key Programming
1. Close all doors.
2. Insert an already programmed master key into the ignition.
3. Turn the key from the OFF to On and back OFF FIVE (5) times.
4. Open and close the drivers door SIX (6) times.
5. Remove the key from the ignition.
6. Insert the new key you want to program into the ignition.
7. Wait 1 minute. The security light will be blinking for this one minute. When it stops blinking your key is programmed. To end programming step on the brake one time.
NOTE: You have 35 seconds to complete steps 1-5 and 10 seconds to complete step 6. If you do not do this procedure fast enough the car will not go into programming mode and your key will not program.
If the security light does not go out after 1 minute start the procedure over again.
I found these instructions as well. I am going to try this evening. The only difference is in step 16 where this version says to press the LOCK button instead of UNLOCK
Remote Programming
1. Close and lock all doors. Unlock and open drivers door.
2. Put key into ignition and remove TWO TIMES.
3. Close and open the drivers door TWO TIMES.
4. Put key into the ignition and remove.
5. Close and open the drivers door two times.
6. Put key into the ignition. Close the drivers door.
7. Turn ignition ON then OFF ONE TIME- this will put the car in ADD mode for your remote. (Turning the ignition ON then OFF TWO TIMES will ADD the remote but will erase all existing remotes.)
8. Remove the key from the ignition. The door locks will cycle one time (or two if you are erasing) . On the REMOTE press and hold the LOCK and the UNLOCK button for 2 seconds. On the REMOTE press the LOCK button for one second.
AT THIS POINT, the locks should cycle by themselves ONE time. This means the procedure was accepted. IF the locks cycle twice it has failed. IF this happens you must start over. Hold the remotes higher up for better reception
9. Open and close the drivers door. Put key in ignition and pull out. This will end
programming.
Edit: this worked for me. In the end it locked and unlocked twice which according to the instructions means it was unsuccessful, however it was successful because the key works great. Seems there are some subtle errors in the original instructions above.
In the end, I added 2 keys and wife is happy
It's for my 03 UL
07-07-21, 12:39 AM
#24
Instructor
Pretty easy to discriminate between the Master and Valet keys.
If you can open the Trunk with the Trunk button, it's a Master key.
If you can't, it's probably a Valet key.
01-31-24, 09:29 AM
#25
1st Gear
Join Date: Jan 2024
Location: Oregon
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2006 LS430 Keyless Entry
The advice to use the original working remote helped for my 2006 LS430 but only with a slight modification to continue to use the Original Working Master Key for the first iteration of step 15.
Attempting to first add a new remote resulted in two lock/unlock cycles, indicating that the process failed.
Keyless Entry Programming. Lock. Unlock. Trunk. (TTT notes)
1. Sit inside the car. Close the driver’s door. All other doors closed also.
2. Lock the doors with the lock button.
3. Start the car with the original working master key. Wait a few seconds. Turn off the car and remove the original working master key.
4. Open the driver’s door by pulling on the handle. Do not unlock with the button or manually unlock. Just pull the handle and Open the door. Driver’s door is now Open.
5. Within 5 seconds, Insert and Remove the original working master key from the ignition switch TWICE. (In Out In Out).
6. Within several seconds, Close and Open the driver’s door TWICE. (Close Open Close Open).
7. Insert and Remove the original working master key from the ignition switch. (In Out).
8. Close the driver’s door. (Close).
9. Within several seconds, Open and Close the driver’s door TWICE, adding one final Open. (Open Close Open Close Open).
10. Insert original working master key into the ignition switch.
11. Close the driver’s door. (Close).
12. Switch ignition ON then OFF ONE TIME only - this will put the car in ADD mode.
13. Remove the original working master key from the ignition.
14. System should now Lock and Unlock vehicle one time automatically.
15. Within several seconds, on thenew key being programmed ORIGINAL WORKING MASTER KEY, press and hold UNLOCK button followed immediately with LOCK button so that you are holding down both buttons at the same time. Hold them for a few seconds. Release the buttons. (The original instructions indicate to depress the buttons simultaneously, which did not seem to work for me after several tries, so I varied how to push the buttons.)
16. Within 3 seconds, press and release UNLOCK button on the original working master key.
17. System should now Lock and Unlock the car once to confirm registration. (or twice to indicate registration has failed per the original post)
18. Repeat steps 15-17 on each key being programmed.
19. Exit programming mode by opening driver’s door.
20. Test Keyless Entry functions on the new key. Lock. Unlock. Trunk.
These steps FINALLY worked for me!!! Good luck!!! TTT
Attempting to first add a new remote resulted in two lock/unlock cycles, indicating that the process failed.
Keyless Entry Programming. Lock. Unlock. Trunk. (TTT notes)
1. Sit inside the car. Close the driver’s door. All other doors closed also.
2. Lock the doors with the lock button.
3. Start the car with the original working master key. Wait a few seconds. Turn off the car and remove the original working master key.
4. Open the driver’s door by pulling on the handle. Do not unlock with the button or manually unlock. Just pull the handle and Open the door. Driver’s door is now Open.
5. Within 5 seconds, Insert and Remove the original working master key from the ignition switch TWICE. (In Out In Out).
6. Within several seconds, Close and Open the driver’s door TWICE. (Close Open Close Open).
7. Insert and Remove the original working master key from the ignition switch. (In Out).
8. Close the driver’s door. (Close).
9. Within several seconds, Open and Close the driver’s door TWICE, adding one final Open. (Open Close Open Close Open).
10. Insert original working master key into the ignition switch.
11. Close the driver’s door. (Close).
12. Switch ignition ON then OFF ONE TIME only - this will put the car in ADD mode.
13. Remove the original working master key from the ignition.
14. System should now Lock and Unlock vehicle one time automatically.
15. Within several seconds, on the
16. Within 3 seconds, press and release UNLOCK button on the original working master key.
17. System should now Lock and Unlock the car once to confirm registration. (or twice to indicate registration has failed per the original post)
18. Repeat steps 15-17 on each key being programmed.
19. Exit programming mode by opening driver’s door.
20. Test Keyless Entry functions on the new key. Lock. Unlock. Trunk.
These steps FINALLY worked for me!!! Good luck!!! TTT
02-05-24, 05:27 AM
#26
Driver School Candidate
good morning capeSRH! I saw your repost of the instructions with Line #15 being edited. That instruction #15 is specifically for pressing the buttons on the NEW key being programmed. It has been a few years since I posted this, but pretty sure the instruction still needs to be:
15. Within several seconds, on the new key being programmed, press and hold UNLOCK button followed immediately with LOCK button so that you are holding down both buttons at the same time. Hold them for a few seconds. Release the buttons. (The original instructions indicate to depress the buttons simultaneously, which did not seem to work for me after several tries, so I varied how to push the buttons.)
After Line #15, the step #16 is for the car to recognize that you DO have a working master key with you inside the car, so the programming is "happy" you passed all the steps . . . .
BTW, still have the 2002 LS430 with 135K miles and running like a champ!! Runs like it is still brand new! Great car!!
15. Within several seconds, on the new key being programmed, press and hold UNLOCK button followed immediately with LOCK button so that you are holding down both buttons at the same time. Hold them for a few seconds. Release the buttons. (The original instructions indicate to depress the buttons simultaneously, which did not seem to work for me after several tries, so I varied how to push the buttons.)
After Line #15, the step #16 is for the car to recognize that you DO have a working master key with you inside the car, so the programming is "happy" you passed all the steps . . . .
BTW, still have the 2002 LS430 with 135K miles and running like a champ!! Runs like it is still brand new! Great car!!
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wordwrkr
LS - 3rd Gen (2001-2006)
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12-15-16 06:50 PM
2002, 2004, 2005, issue, key, keyless, lexus, ls430, program, programing, programming, remote, transponder
