TMC is an independent, primarily volunteer organization that relies on ad revenue to cover its operating costs. Please consider whitelisting TMC on your ad blocker and becoming a Supporting Member. For more info: Support TMC

Key fob battery tip

Discussion in 'Model S: User Interface' started by EV_Bob, Apr 15, 2013.

  1. EV_Bob

    EV_Bob New Member

    Dec 5, 2012
    Silicon Valley
    Last week, after having the car about 6 months, my key fob battery died and I could not start the car. I tried the various suggested places to put the fob that would still let it start (cup holder?, by the wiper?) but none of those worked. Fortunately, it happened at home and I just switched with my wife's key fob until I could get a new battery. But if it had happened a work or while out, it would have been a bigger problem.

    Fortunately, there is a simple way to avoid worrying about getting stuck. When you buy the CR2023 batteries (at Safeway, drug or camera stores), they often come two to a pack. I realized that you should just leave the second battery in the glove box. That way, if the fob battery dies in an inconvenient place, you can use the iPhone app to unlock the car, get the spare battery and replace it.
  2. efusco

    efusco Moderator - Model S & X forums

    Mar 29, 2009
    Nixa, Missouri, United States
  3. Doug_G

    Doug_G Lead Moderator

    Apr 2, 2010
    Ottawa, Canada
    My ever-thoughtful ranger slipped a spare battery into my glove box before my car was delivered.
  4. wycolo

    wycolo Active Member

    May 16, 2012
    After 4 months & 4000 miles (6,666 km):

    Daily key: 2.98+ vdc
    Unused key: 2.98 vdc

    So it appears 'usage' approaches zero as a limit. And that my two were 'good ones' to begin with. Ok, but what does the crapout curve look like??
  5. smd

    smd Member

    Jul 25, 2009
    Lafayette, CA
    You probably just made a typo, but the battery is CR2032. Thanks for the idea to put it in the glovebox. I happened to have a few a home and now one of them is in the car.

Share This Page

  • About Us

    Formed in 2006, Tesla Motors Club (TMC) was the first independent online Tesla community. Today it remains the largest and most dynamic community of Tesla enthusiasts. Learn more.
  • Do you value your experience at TMC? Consider becoming a Supporting Member of Tesla Motors Club. As a thank you for your contribution, you'll get nearly no ads in the Community and Groups sections. Additional perks are available depending on the level of contribution. Please visit the Account Upgrades page for more details.