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

master key programming,need help

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Old 11-10-10, 06:09 PM
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bmorekid
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Default master key programming,need help

anyone knows how to program specifics like to unlock doors and lock and the trunk setting..I just bought a master key and i programmed it to start my engine but thats about all it does. my other master that does all the features is broken..
Old 11-10-10, 09:31 PM
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shvc1991
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A problem that a lot of people have is that when they buy the master key, the provider gives them the right procedure to program the key to start the engine, but the wrong one to program the locking features.

Here's the right way to do it.

1. Start out by locking and then unlocking all the doors with the power switch. Keep just the driver's door open.
2. Place the new master key into the ignition and then remove it within 3 seconds.
3. Now hold the key in the air right in front of your face so the key will get the best reception and then lock and unlock the doors 5 times within a 40 second time frame.
4. Close the door and then open the door.
5. Repeat step 3.
6. Now place the new key into the ignition, turn it to the on position but do not start the car, and then turn it off and remove the key.
7. Press and hold both the lock and unlock buttons on the key for about 1.5-2 seconds and then about a second after press and hold just the lock button for about 1 second.
8. If within 3 seconds, the door locks lock and unlock once then the registration of recognition code was excepted... If cycled twice, the code was denied. If it did not work, try step 7 again.
9. Close the door and try out your new key.

This code will also program the trunk to open.

I must have done another procedure like 20 times before I switched to this one. I figured this one out on my own and this is the best that I could remember it. I got a new master key about a month and a half ago because my body shop accidentally cracked the transponder casing.

Last edited by shvc1991; 11-10-10 at 09:35 PM.
Old 11-11-10, 05:27 AM
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AMSMIKE
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Great info. Thanks. This is certainly different than what I have seen posted in other threads.

One question. If I need to program 2 master keys, do I do the whole procedure for each key?


Originally Posted by shvc1991
A problem that a lot of people have is that when they buy the master key, the provider gives them the right procedure to program the key to start the engine, but the wrong one to program the locking features.

Here's the right way to do it.

1. Start out by locking and then unlocking all the doors with the power switch. Keep just the driver's door open.
2. Place the new master key into the ignition and then remove it within 3 seconds.
3. Now hold the key in the air right in front of your face so the key will get the best reception and then lock and unlock the doors 5 times within a 40 second time frame.
4. Close the door and then open the door.
5. Repeat step 3.
6. Now place the new key into the ignition, turn it to the on position but do not start the car, and then turn it off and remove the key.
7. Press and hold both the lock and unlock buttons on the key for about 1.5-2 seconds and then about a second after press and hold just the lock button for about 1 second.
8. If within 3 seconds, the door locks lock and unlock once then the registration of recognition code was excepted... If cycled twice, the code was denied. If it did not work, try step 7 again.
9. Close the door and try out your new key.

This code will also program the trunk to open.

I must have done another procedure like 20 times before I switched to this one. I figured this one out on my own and this is the best that I could remember it. I got a new master key about a month and a half ago because my body shop accidentally cracked the transponder casing.
Old 11-11-10, 06:34 AM
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shvc1991
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I'm not sure about that as I only had to program one key.

Perhaps what you could try to do is complete the programming for one key, then instead of closing the door to end the programming mode, start from step 6 with the second new master key?
Old 11-11-10, 06:36 AM
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shvc1991
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Another thing to add is that it's pretty much all about timing. Don't do it too fast, nor too slow.
Old 11-11-10, 07:46 AM
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AMSMIKE
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Originally Posted by shvc1991
I'm not sure about that as I only had to program one key.

Perhaps what you could try to do is complete the programming for one key, then instead of closing the door to end the programming mode, start from step 6 with the second new master key?
Originally Posted by shvc1991
Another thing to add is that it's pretty much all about timing. Don't do it too fast, nor too slow.
Will do, once my car is finished.

Thanks again for your replies!
Old 11-11-10, 08:14 AM
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shvc1991
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No problem. Hope all goes well! Let us know if it works.
Old 11-11-10, 08:58 AM
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bmorekid
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i tried and it didnt work for me
Old 11-11-10, 09:16 AM
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my car is a 1999 gs 300
Old 11-11-10, 09:56 AM
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sakataj
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Originally Posted by AMSMIKE
If I need to program 2 master keys, do I do the whole procedure for each key?
yes....i did

Originally Posted by shvc1991
Don't do it too fast, nor too slow.
are we still talking about programming a key?
Old 11-11-10, 11:17 AM
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shvc1991
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Originally Posted by bmorekid
my car is a 1999 gs 300
Mine's a 2000. Can't be much different.

Originally Posted by sakataj
yes....i did

Brian, did I get the procedure right? I can't remember if that's exactly how I did it.

are we still talking about programming a key?
Of course not.
Old 12-25-11, 10:01 PM
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searched and resolved. thanks 1991. it worked
Old 12-27-11, 08:42 AM
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im going to be doing this today when i replace my battery, hoping for the best
Old 12-31-11, 01:05 PM
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shvc1991
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Originally Posted by kingkirby
searched and resolved. thanks 1991. it worked
No problem. Glad I could help.
Old 01-01-12, 01:23 PM
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Originally Posted by kingkirby
searched and resolved


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