Replacing the Key Battery Tesla Model S

With normal use, the key's battery lasts for around a year. A notification appears on the instrument panel when the battery is low. To replace it, follow these steps:

Note: It is recommended to replace the battery in all keys at the same time.

  • To release the bottom cover, set the key button-side down on a soft surface and use a small flat-bladed tool or your fingernail to pry it up.
  • Carefully take the battery away from the front holding clips to remove it.
  • Put in the new battery (type CR2032) with the '+’ side facing upwards.

    Note: It is suggested to use Panasonic CR2032 batteries, which can be bought through most retail outlets.

    Note: Before installing the battery, wipe it clean and prevent contacting the flat surfaces. Fingermarks on the battery's flat sides can shorten its life.

  • Align the tabs on the widest side of the cover with the corresponding slots on the key while holding the cover at an angle, then press the cover forcefully onto the key until it snaps into place.
  • By unlocking and locking your vehicle, you can make sure the key works.


Tesla, Inc. was not involved in the development of this document and did not provide any input or otherwise edit, review or authorize it.