GS - 2nd Gen (1998-2005) Discussion about the second generation GS300, GS400 and GS430 (1998 - 2005)

trouble programming my gs300

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Old 10-06-14, 07:50 PM
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mkpoto
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Default trouble programming my gs300

I have been trying for the past couple of days to program a secondary key (keyport key) Car is a 2002 Lexus Gs300

I have been using the following two methods:

1. Insert an already programmed master key into the ignition. Do not turn.
2. Press and release the gas pedal 5 times.
3. Press and release the brake pedal 6 times.
4. Remove the key from the ignition.
5. Insert the new key you want to program into the ignition.
6. Press and release the gas pedal one time.
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 brake one time.
NOTE: Look for your security light. This light will guide you during the programming procedure. The security light will go off at Step 1. It will remain off until Step 6. The security light will come on and start to blink after Step 6 until the key is programmed. If the security light comes on after Step 4 STOP the procedure and start over again.
If you perform this procedure too slowly your car will not go into programming mode. If you can not get your car to go into programming mode make sure you are using a master key and not a valet key. If you have a master key then you will probably need to perform this procedure more quickly.
1. Simultaneously depress and release brake and accelerator pedals 1 time.
2. Insert existing master key into the ignition. Do not turn.
3. Within 15 sec. Press and release the accelerator pedal 5 times. (not too rapidly)
4. Within 20 sec. Press and release the brake pedal 6 times.
5. Remove the key from the ignition.
6. Within 10 sec. insert the new key you want to program into the ignition.
7. Within 10 sec. press and release the accelerator pedal one time. At this time the security light starts blinking. Wait about 1 minute while it blinks.
8. After 45 sec to 1 min the security light will stop blinking and go off. When it stops blinking your key is programmed. To end programming, step on brake one time.
9. Remove new key then reinsert and try starting the car.
1. Have all windows up and doors shut.
2. Stand outside the vehicle.
3. From outside, lock the door with "your key".
4. From outside, unlock the door with "your key".
5. Enter the vehicle, and close the door.
6. Start the car, then turn car off, and remove the key.
7. Insert "your key" back into the ignition.
8. Within' 35 seconds
a) Turn the key from "OFF" to "ON" five times ending in the "OFF" position.
b) Open and close the driver's door SIX times.
c) Remove "your key"
9. Within' 10 seconds insert "NEW KEY" into the ignition, and turn to "ON".
10. Leave the key inserted until the security light stops flashing (up to 90 seconds)..
11. Remove "NEW KEY" from ignition.
12. Depress brake pedal forcefully ONCE to exit programming mode.
13. Wait 15 seconds to allow computer to reset.
14. Test "NEW KEY" by inserting into ignition and attempt to start the vehicle.
So here is my key (was the only key I received when I purchased it)


Is this a master key? I have seen stuff online saying that a master key is gray on top?

Also after the light starts to blink it does not stop for a very long time.

can anyone assist?
Old 03-30-16, 02:19 PM
  #2  
cstrong45
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What I did for the remote was insert the coded Master Key the ignition.....but then I pushed buttons Lock and Unlock on the new Master key. It worked
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