BYD e6A Owner's Manual page 37

If power supply is at ACC or ON, the doors
cannot be opened/locked by the key.
When unlocking all doors with electronic
intelligent key, even if the doors are not opened,
the interior lights will be turned on and remain
on for 15 seconds before going out.
When using electronic intelligent key to unlock
doors, please pull open a door manually in 30
seconds. Otherwise all doors will be locked up
automatically.
If you press and hold the locking/unlocking
switch, the key will not function repeatedly.
You must release the switch first for repeated
operation.
BYD e6A AUTO Owner's Manual
Finding Car Operation
When the car is under anti-theft state, press
down locking switch and the car will give out a
long sound with the turning signal lights
flashing for 15 seconds. When you can not
find your car, this function is useful to locate it.
Under searching state, press the locking
switch again to enter into the search state for
the second time.
Replace Card-type Intelligent Key Battery
The replacement of battery for the card-type
key is simple and you can do it yourself. You
must use CR2025 lithium battery or equivalent
for replacement.
WARNING
Pay close attention to prevent the battery
from being swallowed by children.
NOTE

Only use batteries recommended by
BYD service station or their
equivalent for replacement.

Dispose of depleted batteries
according to local laws.
Doors and Keys 1-19