BYD M6 Owner's Manual page 73

(5) Change the orientation of the
vehicle until the front end pointing
the south. Press OK, "South" will
be displayed in the mirror. At this
time, press Ok again, if "South"
flashes for 2 times and then stops,
the calibration is completed. The
mirror will exit calibration and
return to normal status.
Display
window
BYD M6 AUTO Owner's Manual
Otherwise, if "West" is displayed when
pressing OK button again, shut down
the engine and repeat the procedure
above from step (1). If any text other
than "West" is displayed, repeat the
procedure above from step (2) without
turning off the engine.
(6) After calibration, drive the vehicle
for another circle
whether correct text is displayed
for each direction. If abnormal,
repeat the calibration procedure
from step (1).
to check
Steering Wheel and Rearview Mirror 1-65