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SC430 - 2nd Gen (2001-2010)

replacement 2003 Lexus SC 430 remote control key

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Old Mar 20, 2021 | 12:12 AM
  #1  
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Default replacement 2003 Lexus SC 430 remote control key

Hello everyone,
I lost my master remote key. I still have the transponder key which when I checked it acted like a masterkey because the "security light turned off when the key was inserted in the ignition.
QUESTION: I want to get preferably a replacement remote key , any suggestion where I can get the key ? get it cut? and then I read here if I have the master I can still program this by myself? Please enlighten me . Thanks.
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Old Mar 20, 2021 | 11:04 AM
  #2  
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Welcome to the SC430 Forum.

Start here for the remote key:

https://www.clublexus.com/forums/gs-...t-key-fob.html

Good luck.
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Old Mar 20, 2021 | 03:31 PM
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Originally Posted by Petillante
Hello everyone,
I lost my master remote key. I still have the transponder key which when I checked it acted like a masterkey because the "security light turned off when the key was inserted in the ignition.
QUESTION: I want to get preferably a replacement remote key , any suggestion where I can get the key ? get it cut? and then I read here if I have the master I can still program this by myself? Please enlighten me . Thanks.
You will need a Master Key to program another key(s). The fact that the security light is off does not mean your transponder key was designated as a Master Key, I hope I am wrong on this. You can get a blank key fob from Amazon or EBay. Though it’s cheap from these two sources compared to Locksmith price, be aware that it might not be programmable. Talk to the vendor and read the reviews before you make a purchase. After you got the blank key, you can have it cut from any Locksmith using your transponder key then program it yourself with open and close door method. Note that you can program four keys max, if you’ve reached your limit, you must delete a key in order to program another key. To delete a key, you must have TechStream.
If you are not sure that you will be able to do it yourself, take your car to a local Locksmith. It will cost you $200–$300 but much cheaper if you go to the Lexus dealer.
If you have any question, just ask. We are here to help.
And, last but not least, DO NOT lose your only key. Good luck.
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Old Mar 20, 2021 | 08:40 PM
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I heard 1010 keys makes replacement keys for Lexus. Any one who has this experience and was successful? I just need the steps you may have taken to ensure that I make a mistake in getting the wrong key and unable to program?
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Old Mar 20, 2021 | 09:57 PM
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1010 Key will cut your key even from a photo. I don’t know how they can program it without your SC. Personally, I have not have any experience with 1010 key but many club members have. They can chime in.
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Old Mar 21, 2021 | 05:55 AM
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Yes, 1010 worked for me several years ago
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Old Mar 21, 2021 | 07:57 AM
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1010 keys is awesome
https://www.clublexus.com/forums/sc4...amming-16.html
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Old Mar 21, 2021 | 06:11 PM
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Two keys cut by photo for 50 bucks. Wow! 1010 Key, amazing deal.

https://www.ebay.com/itm/BLADE-CUT-b....m46890.l49292
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Old Mar 21, 2021 | 08:30 PM
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This 1010 keys as described will only work if I have a masterkey so I will have to make sure that I have the masterkey.
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Old Mar 22, 2021 | 09:56 AM
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Try the search function. Lots of great info.
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Old Mar 24, 2021 | 12:06 PM
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Order a new master remote key from the Lexus dealer. I got mine for $214, which included the cutting. Then you will pay a bit extra for them to program it to your SC. The one thing to check with the dealer is if they can program without having another remote key (I sitll had one when I did this). For some reason the Lexus tech couldn't get my new key fully programmed (lock/unlock doors) so they waived the programming charge. I looked up the procedure online and got it done myself. So $214 total for a new master key replacement.
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Old Mar 24, 2021 | 01:17 PM
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Originally Posted by jadfly
Order a new master remote key from the Lexus dealer. I got mine for $214, which included the cutting. Then you will pay a bit extra for them to program it to your SC. The one thing to check with the dealer is if they can program without having another remote key (I sitll had one when I did this). For some reason the Lexus tech couldn't get my new key fully programmed (lock/unlock doors) so they waived the programming charge. I looked up the procedure online and got it done myself. So $214 total for a new master key replacement.
Sounded about right for Lexus dealer price. I got mine done for 30 bucks for the key, 20 bucks for the cut and programmed it free with TechStream.
Another good reason for getting TechStram.
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