How long does the battery in key fob last (on average) for 2008?

Discussion in 'Gen II Prius Technical Discussion' started by howardbc, Oct 16, 2012.

  1. howardbc

    howardbc Member

    Joined:
    Mar 20, 2008
    154
    7
    Scottsdale, AZ
    Vehicle:
    2008 Prius
    Hi. I have a 2008 Prius with the Touring Package. It has 31k miles on it and I've had it 4.5+ years. (I'm retired.) I never actually ever use the key. I just leave it in my pocketbook 24/7 and run the car without it in the ignition slot. Also I don't use it to lock or unlock the doors. I just push the door handle button.
    Question: Can anyone tell me what the average life span of the battery might be? Also, is there any kind of warning when the battery is getting low? Yes, I read the Owner's Manual about the key fob but it didn't address any of my questions.
    Any feedback is appreciated. Thank you. :)
     
  2. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    27,135
    4,660
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    4 years is proly a good average. some go longer, some go much shorter. as it wears down, you will slowly find things not working. handle touch doesn't work but push button on fob does, etc. there is no telling how it will manifest itself, each case is a little different.
     
  3. howardbc

    howardbc Member

    Joined:
    Mar 20, 2008
    154
    7
    Scottsdale, AZ
    Vehicle:
    2008 Prius
    Thank you, Bisco! I better change it today!
     
  4. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    27,135
    4,660
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    proly a good idea. cheap peace of mind maintenance. and the sooner you change it, the less gummed up the fob is and the easier it comes apart. all the best!
     
  5. edthefox5

    edthefox5 Senior Member

    Joined:
    Jul 25, 2007
    3,923
    768
    Clearwater, Florida
    Vehicle:
    2007 Prius
    Model:
    Two
    Look at the fob while you push a button. There's a little red LED that lights up. That gets dim when battery starts going. Notice between now and and the new battery.