How do I Reprogram the Keyless entry for my 2009 Toyota Prius?

Locksmiths who are part of the Pop-A-Lock franchise have the information and equipment to pair used keyfobs to a different car than they were originally used on. So if your non-functional fob is really working and the correct one for your car, then they could fix you up. If the fob is defective or the wrong one, then it will have to be replaced with a correct one.

 

If the key your are trying to program is Used, you will not be able to program it yourself without special equipment.

The chicken dance will not work with a Used key.

It must be a New key.
(Or a Used key that has been reset/virginized to act like a New key.)

I think you are trying to program a Used key, not a New key, correct?

 

You will not have the ability to reset (viginize) the key.

Only options with a used key is to buy Techstream software, a OBDII to USB dongle (like minivci), and a laptop to run it on. All this would cost $100 or so plus and hour or so to load software and drivers.

Next you would need to payo money to a service so that you can get a response for the reseed procedure. This would likely cost $10-$30.

 

I think your talking rocket science to him at this point. He didn’t even know the keyfob had a battery in it. I think he should get his work done by someone who has some mechanical skills. Like a shop.

 

You need to know why the key is not working. 1) Was the key paired to the car properly. 2) Was the key a new key, or a used key when it was originally programmed to the car. 3) How many keys have been attempted to be paired to the car. 4) Do you have the right key. 5) Do you have a Toyota OEM, or aftermarket key. etc.

Do you want to buy the Techstream software and try to program it yourself? If not, I suggest you buy a New Unused OEM Key off Amazon for around $160, and take it to a local dealer with all your keys, and have them program it. If they can get the new key from Amazon working, then quit with the 2 keys. If not (too many keys paired to the car), then they have to reprogram the car, and they might as well get all 3 keys working. I wouldn't trust the locksmith to do it, unless they have experience resetting the car.