BYD e6A Owner's Manual page 38

Replace the battery for the card-type
intelligent key in the following steps.
a. Pull out the mechanical key in the arrow
direction.
1-20 Doors and Keys
BYD e6A AUTO Owner's Manual
b. Take out battery.
c. Insert the new battery into the intelligent key,
and then put back the mechanical key into
the card-type intelligent key.
NOTE

Make sure that the battery poles are
installed properly.

Do not operate the battery with wet
hands, which may cause rusting.

The card-type key is not waterproof; do
not let water enter it.
After battery replacement, check whether the
card-type intelligent key can work normally. If
it still cannot work, please contact a BYD
authorized service station.
NOTE

Do not alter the emission frequency,
increase the emission power
(including but not limited to adding
emission frequency amplifiers), equip
with an external antenna or use other
emission antennas without
permission.

Use of the electronic intelligent key
should not produce any harmful
interference to any legal wireless
communication services; stop use of
it immediately if any interference is
found and do not use it until the
interference has been eliminated.

When using a micropower radio
device, there might be interference
from radio services and radiation
interference from industrial, scientific
and medical devices.

Do not use the electronic intelligent
key on board aircraft or at airports.