Gen4 Smartkeys - self program?

Q. I want to program Gen 4 Prius smartkey fob using a cheap mini VCI cable. Does Gen 4 Prius key programming procedure same as Gen 3 Prius?

A. There is no way to self-program (aka "chicken dance") a gen3 or gen4 fob without Techstream or similar tool.

You CAN program Gen4 fobs using a later version of Techstream / MiniVCI. It works very similar to the Gen3 procedure. You need a dealer new (i.e virgin fob) or a used fob that has been unlocked / reset / virginized in order to easily program it with Techstream.

If the fob is used i.e. not virginized/reset, you'll have to do a seed reset on the car and that requires locksmith credentials or purchasing a calculated passcode in real time while you're doing the seed reset with Techstream.

 

You can delete all other keys except your one working fob with Techstream, no reseeding needed.

You can only easily add new virgin or "unlocked/reset"" keys. If the key was previously programmed to another Prius you need a seed reset passcode in order to add it to your car and have to go through a more complicated procedure with a 16 minute waiting period etc.

If you don't have Techstream etc you can look for a local automotive locksmith, they are usually way cheaper than the dealer. If you are near Boulder, CO you can come to my shop.