Mazda 2015 5 Owner's Manual page 106

Knowing Your Mazda
Security System
NOTE
The keys carry a unique electronic code.
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For this reason, and to assure your safety,
obtaining a replacement key requires some
waiting time. They are only available
through an Authorized Mazda Dealer.
Always keep a spare key, in case one is lost.
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If a key is lost, contact an Authorized
Mazda Dealer as soon as possible.
If you lose a key, an Authorized Mazda
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Dealer will reset the electronic codes of
your remaining keys and immobilizer
system. Bring all the remaining keys to an
Authorized Mazda Dealer to reset.
Starting the vehicle with a key that has not
been reset is not possible.
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