BYD M6 Owner's Manual page 13

Check the following if the electronic
smart key cannot operate the doors,
cannot operate normally within the
specified working distance or if the
key indicator isn't working normally:
Check whether there is any radio
transmitter nearby which
interfere with the normal operation of
electronic smart key.
Check whether the battery is
depleted. Check the battery in the
electronic smart key. To replace the
battery, please refer to
"Replace Battery in Electronic Smart
Key".
In case that you lose the electronic
smart key, contact a BYD service
station immediately to prevent your
vehicle from being stolen or other
accidents. (Refer to "When Key is
Lost" in Chapter 4.)
BYD M6 AUTO Owner's Manual
Doors Locking/Unlocking
may
section
To lock/unlock all doors, press the
switch on the smart key slowly and
firmly.
Locking: press the lock switch, all
doors will be locked. At this time, the
exterior rearview mirror is folded and
the turn signal lights flash once.
Locking
Check whether all doors are locked
reliably.
The lock switch cannot function if any
door is open. At this time, door locks
will be unlocked first and then
relocked, but the exterior rearview
mirror won't be folded and turn signal
lights don't flash, with the alarm
Unlocking
sounding once.
Unlocking: press the unlock switch, all
doors will be unlocked. At this time,
the turn signal lights flash for 2 times if
the anti-theft function isn't activated
and flash for 3 times if the anti-theft
function is activated.
Keys &Doors 1-5