Tesla 2012- 21013 S Owner's Manual page 9

If the key does not work, you may need to
change its battery. if the key's battery is
discharged, you can open Model S by following
the unlocking procedure described on
page 2.5.
CAUTION: Remember to bring the key
with you when you drive. Although you
can drive Model S away from its key, you
will be unable to power it back on after it
powers off.
CAUTION: Protect the key from impact,
water damage and high temperatures.
Avoid contact with solvents, waxes and
abrasive cleaners.
Replacing the Key Battery
The key's battery lasts for approximately a year.
When the battery is low, a message displays on
the instrument panel. Follow these steps to
replace it:
1. Place the key, button side down, on a soft
surface.
2. Release the battery cover using a small flat
bladed tool.
3. Remove the battery by pushing it toward
the center of the key to release it from the
front retaining clips.
OPENING AND CLOSING
4. Insert the new battery (type CR2032) with
the '+' side facing up. Avoid touching the
flat surfaces of the battery, and wipe the
battery clean before fitting. Finger marks
can reduce battery life.
5. Align the battery, then press the key and
battery together until they snap into place.
Used batteries contain harmful
substances. Seek advice on disposal from
Tesla or your local authority.
Getting More Keys
If you lose a key or require an additional one,
contact Tesla. Model S can recognize up to
three keys.
When ordering a new key for Model S, take all
available keys with you for reprogramming.
Doors
2.3