Emergency spare FOB and hide a key?

I see what you are saying and the reason you are saying it and that makes a lot of sense and thank you for pointing that out to me. Will wrapping the smart key in aluminum foil do the shielding or does it need to be something else and if so would you please share with me what you would suggest?

I am still wondering if there are a lot of people who don't know that that Smart Key fob has the passive RFID like function and in that case if the smart key battery was to go dead they could still start their car by putting the smart key in the dashboard key slot? I don't remember reading about this in any of the Toyota documents that I have read but maybe I have missed it somewhere.

Thank you very much Jeff for your help and the same to anybody else who has added to my learning about my Prius.

Jim

 

Unnecessary post.

 

Unnecessary post.

 

I thought in my owner's manual it mentioned how the FOB was designed to not need a battery... Use mechanical key for door and dash-slot for ignition when the FOB battery died.

edit: It's pages 20-22 in my 2005 Owner's Manual PDF.

 

I believe this is what everyone is saying:

The battery in the fob remote is to power a remote lock/unlock signal or trigger a panic signal. Dead fob remote batteries, no more remote lock/unlock and panic. This applies to Smart and non-Smart Key Systems.

Both Smart and non-Smart key fob systems have a passive RFID "chip" embedded into the remote. Your car is programmed to recognize allowed key fobs to Start the car. Your key fob won't start my car and visa versa. If you have a Smart Key System, the short range antennas in the front doors, trunk hatch, and ignition fob slot, are looking for an allowed starting fob. When an allowed starting fob remote is in range, you are able to unlock or lock the doors by depressing that small square black button on the door handle or trunk hatch, or start the car, if inside. No more pulling out your remote to lock/unlock, or insert fob into key slot to start the car.

 

Thanks for the info Scallywag. I don't know how I missed that. I will look that up in my manual. It might be that I didn't realize what it meant when I read it..haha...

Thank you "exstudent" for the explanation.

I appreeciate all the help I can get learning all about my Prius.