If the smart key fob remote control for your 3rd generation (2010, 2011,
2012 & 2013) Toyota Prius hybrid hatchback isn't working as well
any more, you probably just need to replace the coin cell battery. To view my
quick DIY guide to the procedure, click on the link below.
Here's the link -
http://www.paulstravelpictures.com/Toyota-Prius-Smart-Key-Fob-Battery-Replacement-Guide/index.htmlOwners
of the previous generation 2004-2009 Prius or other Lexus, Toyota or
Scion vehicles with "Smart" Key Fobs may also find the instructions to be
helpful.
I hope someone finds it to be useful.
Cheers,
Paul