Successful SC430 Key Programming
Pole Position
Joined: Mar 2009
Posts: 3,426
Likes: 7
From: VA
You need to start with a master key. The valet key will not allow you to program other keys. Whether or not any one programming sequence will work on your GS is something that you'll just have to try to find out. As an example, I haven't found any single procedure that works with my '06 SC430, period. The dealers use a "scan tool" to do their programming rather than door/gas pedal/brake dances. There is a lot of folklore, myths and procedures that work on some cars but not on others so it's up to you to try them until something works; or just give up. but in any case, you need a master key to succeed.
Pole Position
Joined: Sep 2001
Posts: 374
Likes: 11
From: Texas
Let us know what you do for the fix.
...
If there is an inexpensive way to get a new shell, that would be nice, (it's broken down where the little bitty screw holds the halves together) but I'm not going to spend $100 in this economic climate when free tape will do the trick.
...
If there is an inexpensive way to get a new shell, that would be nice, (it's broken down where the little bitty screw holds the halves together) but I'm not going to spend $100 in this economic climate when free tape will do the trick.
https://www.clublexus.com/forums/sc-...short-key.html
I cut my flip key down to 38mm (it's long enough for the LX's) if for no other reason than aesthetics when it's in the ignition. Davenport Motors cut it for me for $0.00 (cool!).
Re: programming with the master, remember that you also have the card key, which is a master key.
Since I hadn't tried it before, I attempted to start the car with my broken key (no transponder) yesterday. The starter cranks, but it won't start, so apparently it disables the ignition, not power to the starter and other systems. Just FYI.
Driver School Candidate
Joined: Dec 2010
Posts: 11
Likes: 0
From: az
Successful Key Programming but Speed Required
I purchased a used key and new blank key off ebay for our 2004 SC430. I was successful in programming the key and remote starting with my one original master key and using the procedure at the beginning of this post. Please note that it required 5-6 attempts to get it right but the key to this procedure is speed. Work fast through the programming steps. My girlfriend is very happy to have a second key now since she can loose her key within 5 minutes of entering the house.
CL Community Team
Joined: Apr 2007
Posts: 12,398
Likes: 455
From: GA
Thanks for letting us know. Really great to know we can use this manual programming of transponder keys off fleabay. I have a blank that I need to get cut. Then I can do this gas-brake routine.
Driver
Joined: Sep 2008
Posts: 97
Likes: 0
From: Texas
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Driver
Joined: Jan 2011
Posts: 127
Likes: 0
From: Texas
I did too get a key off of 'fleabay' (love the terminology Mandy) with the transponder inside. I paid $11.99 for the key. When I purchased my 03 last August I only received one master/one valet. The original owner said she would look for it but I've since given up on that (I was really hoping it would have appeared in my stocking). Was told if the Master was lost it would cost me $1000 to have new keys made and only the dealer could do that. That prompted me to learn ALL about keys. With that said I'm having the new key cut like the master for no charge and $35 for the programming. I figured if they are charging me nothing for the key cutting the $35 for programming is ok with me. My luck I'd mess something up with the ECU which would end up costing me more!
Driver
Joined: Sep 2008
Posts: 97
Likes: 0
From: Texas
No the instruction from the first posting of this thread. It doesn't use gas paddle. I seen the gas paddle one and didn't work on my 09. Also definitely count 1 mississippi, 2 mississippi out loud to = 1 sec. Also, I suggest getting the keys from sewell.. great price and you know it will work.
Driver
Joined: Jan 2011
Posts: 127
Likes: 0
From: Texas
Got my a 'master' key programmed today so I'm happy with my insurance policy. Total spent was $42. Maybe down the road I'll get another key with the remote buttons but for now at least I have a master key in case my wife loses hers.
CL Community Team
Joined: Apr 2007
Posts: 12,398
Likes: 455
From: GA
Was this at the dealer? Was it cut from there, too?