Best place to get replacement master key?
It is an '04, so I know I will have to get the immobilizer re-programmed.
Thanks
Their phone number is: 866-350-4199
The cost for the master key: $120 + $6 shipping
There is a possibility that you may need to have Lexus program it. My dealer charged $25. Sometimes, you can do it yourself, but it didn't work for me.
The key is as good as a new one from Lexus except it doesn't have the gold plating "L" on the outside.
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Their phone number is: 866-350-4199
The cost for the master key: $120 + $6 shipping
There is a possibility that you may need to have Lexus program it. My dealer charged $25. Sometimes, you can do it yourself, but it didn't work for me.
The key is as good as a new one from Lexus except it doesn't have the gold plating "L" on the outside.
I paid $50.00 for my "replacement key with a GOLD LOGO from EBAY. It is a BLANK key uncut. Brought it over to the LOCKSMITH and he CUT the key for me for $30.00. The blank key came with programing instructions so I was able to program all three buttons unlock, lock and panic. Everything worked except for the IGNITION as that is the ANTI-theft, Electronic starter kill. I brought the GX back to dealership and told them my key stopped working. They re-flashed the "replacement" key no charge.
Here is the ebay store that I got the blank key from (midwest):
http://cgi.ebay.com/ebaymotors/2003-...spagenameZWDVW
Bottom line there are 3 things you'll need to get the key 100% working with GX:
1. Key needs to be "CUT" locksmith with the correct pattern/teeth
2. Programmed - Buttons to function with your car, unlock,lock, panic - instructions included
3. KEY FOB - LINKED to the ECU kill start - LEXUS dealer only (that I'm aware of...)
Good Luck!
-Alex
Celebrating Lexus & Toyota from Around the Globe
Bottom line there are 3 things you'll need to get the key 100% working with GX:
1. Key needs to be "CUT" locksmith with the correct pattern/teeth
2. Programmed - Buttons to function with your car, unlock,lock, panic - instructions included
3. KEY FOB - LINKED to the ECU kill start - LEXUS dealer only (that I'm aware of...)
Good Luck!
I guarantee if you told the dealership that it was a new replacement key, they would have charged you a minimum of 1 hour labor.

Which is why I told them, "Gee, I don't know what happened, but my wife pulled the spare out from the bottom of the drawer the other day and everything worked except the ignition...?"
Service replied... "Don't worry sir, it happens once in a blue, we'll take care of this for you..." 15 minutes later, the key was re-programmed, at no additional charge.
Also, please be aware that the ECU lock can hold up to 5 keys, so as soon as you "re-program" the 6th key, the 1st key will stop working, 7th key, and the 2nd key will stop. So at any given time you will only have 5 working keys. I gave them ALL of the keys, including the Valet, Credit Card "emergency" and original master key because I didn't want to run the risk of having them "fixing" the replacement key only to KNOCK out one of my existing keys. So all in all everything worked out fine...
If you do have your Key Code, you give it to them and they laser cut a new key for $29.95 and had it back to me in less than a week.






