Mazda CX-5 Manual page 744

If Trouble Arises
Warning/Indicator Lights and Warning Sounds
Signal
7-58
Cause
A key from another manufacturer similar to
the key is in the operation range.
Without the ignition switched off, the key is
taken out of the cabin, and then all the
doors are closed.
Action to be taken
Take the key from another manufacturer
similar to the key out of the operation
range.
Bring the key back into the cabin.