Tesla S Owner's Manual page 5

Radio equipment on a similar frequency can
affect the key. If this happens, move the key
at least 30 cm away from other electronic
devices (phone, laptop, etc). 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. See
Doesn't Work on page 7.
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,
high temperatures, and damage from
liquids. 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 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.
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.
Opening and Closing
Unlocking When the Key
5. Align the battery, then press the key and
battery together until they snap into
place.
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
5