PROBLEM SOLVED! 2010 SC430 key successfully programmed.

So, it seems I have a unicorn of a car.

Here's a quick lesson of what is needed for anyone wishing to DIY this.

#1) You need an appropriate metal physical key. It needs to be TOY50PT style.

#2) The correct "G -type" transponder chip. This is a rectangular chip about the size of a pea. This chip has a specific frequency that needs to match your car's immobilizer in order to marry. This chip is housed in the three button remote, though, technically it could be housed anywhere near where the metal key is inserted in the car's cylinder. This chip doesn't draw power and it needs to be very close to the car's key cylinder in order for it to enable your car to start. The G chip has nothing to do with the 3 button remote other than being located in the same housing. The G chip's frequency is designated in the name. Chips are named 4D68, for example, where 68 is the frequency in Mhz (I think). When buying a key fob with a transponder chip, you have 2 options. Option 1 is to guess what your chip's frequency is based upon what Toyota typically did in the factory. Sounds like that works for most. But if you run into a stubborn situation like myself where nothing would program, then go to Option 2. At this point you NEED a locksmith to "read" the chip and they will give you the frequency.

#3) The correct 3 button remote. Those require a battery and you can be a far distance from the vehicle in order for them to function. These 3 button remotes have an FCC ID...something like " HYQ14FBB".

So for my 2010 SC430, I have a TOY50PT + 4D72 Transponder + HYQ12BBT remote. Here's the thing. No one, not even OEM, sells that combination of three off the shelf. To my knowledge, it doesn't exist. I had to order a 4D72 chip completely separately and put it with an HYQ12BBT.

According to the transpondery website I'm SUPPOSED to have a 4D68 chip, which is what I suspect everyone else has except for the 300 or so 2010 SC 430 owners out there.

https://www.transpondery.com/transpo...r_catalog.html

So, there you have it. Mystery solved. Hope this helps someone troubleshoot someday.

 

I did get one of those. Couldn't program. Returned it which was a PIA. I would be very cautious with those flipkey/artiway keys. They are HEAVY and they extend a fair distance away from the key's cylinder...way more than the cylinder was designed. So the torque on your the key cylinder is much greater with those keys.

According to The Car Car Nut he sees damaged key cylinders due to weighted keys.

I think you are risking thousands of dollars in damage with those heavy things.

 

I too had difficulty getting FOB programmed until I went through the procedure to erase all keys from the computer. Then, the following procedure (submitted by "Tami") worked perfectly. I had gone to an automotive locksmith, originally, and they could not program the key.
Key Programming
1. Close all doors.
2. Insert an already programmed master key into the ignition.
3. Turn the key from the OFF to On and back OFF FIVE (5) times.
4. Open and close the drivers door SIX (6) times.
5. Remove the key from the ignition.
6. Insert the new key you want to program into the ignition.
7. Wait 1 minute. The security light will be blinking for this one minute. When it stops blinking your key is programmed. To end programming step on brake one time.

 

This reads like you're performing a religious ritual. lol