Mazda CX-3 2018 Owner's Manual page 510

If Trouble Arises
Warning/Indicator Lights and Warning Sounds
KEY Warning Light
Take the appropriate action and verify that the warning light turns off.
Signal
The advanced key battery is dead.
The advanced key is not within the opera-
tion range.
The advanced key is placed in areas inside
the cabin where it is difficult for the key to
be detected.
(Red)
A key from another manufacturer similar to
(Flashing)
the advanced key is in the operation range.
Without the ignition switched off, the ad-
vanced key is taken out of the cabin, and
then all the doors are closed.
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CX-3_8GA5-EA-17F_Edition1
Cause
Replace the key battery (page 6-36).
Bring the advanced key into the operation
range (page 3-7).
Take the key from another manufacturer
similar to the advanced key out of the op-
eration range.
Bring the advanced key back into the cab-
in.
Action to be taken
2017-4-7 15:30:54