Tesla MODEL S Operating Manual page 12

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
50).
Radio equipment on a similar frequency can
affect the key. If this happens, move the key at
least one foot (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
Key Doesn't Work
For increased security, your key fob may
require periodical updates. To update your key
fob, go to Controls > Service > Update Key
Fob and follow the onscreen instructions. Your
vehicle must be in Park to update the key fob.
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 with normal use. When the battery is low,
a message displays on the instrument panel.
Follow these steps to replace it:
Note: Tesla recommends replacing the battery
in all keys at the same time.
1. With the key placed button-side down on
a soft surface, use a small flat-bladed tool
or fingernail to release the bottom cover.
Opening and Closing
Key Not Inside on page
Unlocking When the
on page 13).
Keys and Doors
2. Remove the battery by carefully lifting it
away from the front retaining clips.
3. Insert the new battery (type CR2032) with
the '+' side facing up.
Note: Tesla recommends using Panasonic
CR2032 batteries. These can be
purchased through online retailers, local
supermarkets, and drug stores.
Note: Wipe the battery clean before fitting
and avoid touching the battery's flat
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.
5. Test that the key works by unlocking and
locking your vehicle.
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.
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