1998 GS400 transponder key program
Thread Starter
Driver School Candidate
Joined: May 2011
Posts: 30
Likes: 0
From: Missouri
1998 GS400 transponder key program
Anyone have info on programming a new transponder key? I have one original but would like to have a duplicate. I have searched the forums and found the sc programming sequence but not the gs. Thanks.
u do not.....
give me a second to find it, im a little busy so it may take me a minute but they on here, i used them to program my second master key
ALSO OP not sure where or what you searched but i searched with keywords "program master key" and got 5 pages of threads....the "program key" and got 10 pages of threads,so im calling shenanigans on you actually searching.
https://www.clublexus.com/forums/gs-...need-help.html
Last edited by sakataj; Jul 12, 2011 at 12:18 PM.
Thread Starter
Driver School Candidate
Joined: May 2011
Posts: 30
Likes: 0
From: Missouri
I swear to God I'm going to pistol whip the next guy who says, " Shenanigans." Thanks for the info sakataj but I am tring to program it to start the car.
Ok, here is what I found:
To duplicate a key:
1. Simultaneously depress and release brake and accelerator pedals 1 time.
2. Insert existing master key into ignition.(DO NOT TURN)
3. Within 15 seconds depress and release accelerator pedal 5 times.
4. Within 20 seconds depress and release the brake pedal 6 times and remove key.
5. Within 10 seconds insert new key into ignition.
6. Within 10 seconds depress and release the accelerator pedal 1 time. At this time the security light starts blinking.
7. After 45 to 60 seconds new key is registered and security light goes off (stops blinking).
8. Remove new key and try starting the car.
Ok, here is what I found:
To duplicate a key:
1. Simultaneously depress and release brake and accelerator pedals 1 time.
2. Insert existing master key into ignition.(DO NOT TURN)
3. Within 15 seconds depress and release accelerator pedal 5 times.
4. Within 20 seconds depress and release the brake pedal 6 times and remove key.
5. Within 10 seconds insert new key into ignition.
6. Within 10 seconds depress and release the accelerator pedal 1 time. At this time the security light starts blinking.
7. After 45 to 60 seconds new key is registered and security light goes off (stops blinking).
8. Remove new key and try starting the car.
Last edited by hkvan; Jul 12, 2011 at 01:50 PM.
Lead Lap
Joined: Sep 2006
Posts: 481
Likes: 1
From: CA
I swear to God I'm going to pistol whip the next guy who says, " Shenanigans." Thanks for the info sakataj but I am tring to program it to start the car.
Ok, here is what I found:
To duplicate a key:
1. Simultaneously depress and release brake and accelerator pedals 1 time.
2. Insert existing master key into ignition.(DO NOT TURN)
3. Within 15 seconds depress and release accelerator pedal 5 times.
4. Within 20 seconds depress and release the brake pedal 6 times and remove key.
5. Within 10 seconds insert new key into ignition.
6. Within 10 seconds depress and release the accelerator pedal 1 time. At this time the security light starts blinking.
7. After 45 to 60 seconds new key is registered and security light goes off (stops blinking).
8. Remove new key and try starting the car.
Ok, here is what I found:
To duplicate a key:
1. Simultaneously depress and release brake and accelerator pedals 1 time.
2. Insert existing master key into ignition.(DO NOT TURN)
3. Within 15 seconds depress and release accelerator pedal 5 times.
4. Within 20 seconds depress and release the brake pedal 6 times and remove key.
5. Within 10 seconds insert new key into ignition.
6. Within 10 seconds depress and release the accelerator pedal 1 time. At this time the security light starts blinking.
7. After 45 to 60 seconds new key is registered and security light goes off (stops blinking).
8. Remove new key and try starting the car.
Nice info
Lead Lap
Joined: Sep 2006
Posts: 481
Likes: 1
From: CA
Ok, here is what I found:
To duplicate a key:
1. Simultaneously depress and release brake and accelerator pedals 1 time.
2. Insert existing master key into ignition.(DO NOT TURN)
3. Within 15 seconds depress and release accelerator pedal 5 times.
4. Within 20 seconds depress and release the brake pedal 6 times and remove key.
5. Within 10 seconds insert new key into ignition.
6. Within 10 seconds depress and release the accelerator pedal 1 time. At this time the security light starts blinking.
7. After 45 to 60 seconds new key is registered and security light goes off (stops blinking).
8. Remove new key and try starting the car.
To duplicate a key:
1. Simultaneously depress and release brake and accelerator pedals 1 time.
2. Insert existing master key into ignition.(DO NOT TURN)
3. Within 15 seconds depress and release accelerator pedal 5 times.
4. Within 20 seconds depress and release the brake pedal 6 times and remove key.
5. Within 10 seconds insert new key into ignition.
6. Within 10 seconds depress and release the accelerator pedal 1 time. At this time the security light starts blinking.
7. After 45 to 60 seconds new key is registered and security light goes off (stops blinking).
8. Remove new key and try starting the car.
Did you try this and it worked? I lost my valet key and bought one today. Did not have them program it so I can give this a try.
Trending Topics
ClubLexus Stories
Celebrating Lexus & Toyota from Around the Globe
8 Tips for Improving Your Hybrid or Plug-in Hybrid's Efficiency!
Michael S. Palmer
10 Best Lexus Models No One Remembers
Joe Kucinski
TRD Off-Road Premium: Best 2026 4Runner, Except This One Thing
Michael S. Palmer
Top 10 Lexus & Toyotas to Drive Before You Die!
Joe Kucinski
Top 10 Lexus/Toyotas With The LEAST 5-Year Depreciation
Joe Kucinski
Lexus LC500 Convertible Auction: A Preview of Rising Values?
Brett Foote
GX 550 vs TX 550: Best 3-Row Luxury Lexus Family Hauler
Michael S. Palmer
9 Best Lexus Models You Can Buy for Half Price (And 1 You Shouldn't!)
Joe Kucinski
2026 Lexus NX Buyer's Guide: Models, Features, Prices & More!
Brett Foote
Lead Lap
Joined: Sep 2006
Posts: 481
Likes: 1
From: CA
I suppose if it works, it works... Guess theres more than one way to do it.
Thread Starter
Driver School Candidate
Joined: May 2011
Posts: 30
Likes: 0
From: Missouri
Just out of curiosity, what are the other way you speak of? I now know the way above works for a 98 gs400 but if there are other ways that might help others, then let's get it out.