Tesla S Owner's Manual page 6

If Model S is unable to detect the key, the
touchscreen displays a message indicating
that a key is not inside. Place the key where
Model S can best detect it, which is below the
12V power socket (see
38).
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. With the key placed button side down on
a soft surface, use a small flat-bladed tool
to release the bottom cover.
2. Remove the battery by lifting it away from
the front retaining clips.
Opening and Closing
Key Not Inside
Unlocking When the Key
3. Insert the new battery (type CR2032) with
the '+' side facing up.
Note: Wipe the battery clean before fitting
and avoid touching the battery's flat
on page
surfaces. Finger marks on the flat surfaces
of the battery can reduce battery life.
4. Holding the cover at an angle, align the
tabs on the widest side of the cover with
the corresponding slots on the key, then
press the cover firmly onto the key until it
snaps into place.
Getting More Keys
If you lose a key or require an additional one,
contact Tesla. Model S can recognize up to
five keys.
When ordering a new key for Model S, take all
available keys with you for reprogramming.
Doors
5