Make sure to bring all the keys to an Authorized Mazda Dealer so that they can be programmed. If the engine does not start after 3 or more tries, contact an Authorized Mazda Dealer. Switch the ignition off, and then restart the engine. If the engine does not start with the correct key, and the security indicator light remains illuminated or flashing, try the following: Make sure the key is within the operational range for signal transmission. The security indicator light illuminates for about 3 seconds and then turns off. The system is disarmed when the ignition is switched ON with the correct programmed key. Mazda 3 Owners Manual: Immobilizer System The security indicator light in the instrument cluster flashes every 2 seconds until the system is disarmed. Starting the vehicle with a key that has not been reset is not possible. Bring all the remaining keys to an Authorized Mazda Dealer to reset. If you lose a key, an Authorized Mazda Dealer will reset the electronic codes of your remaining keys and immobilizer system. If a key is lost, consult an Authorized Mazda Dealer as soon as possible. Always keep a spare key in case one is lost. They are only available through an Authorized Mazda Dealer. If you have a problem with the immobilizer system or the key, consult an Authorized Mazda Dealer.įor this reason, and to assure your safety, obtaining a replacement key requires some waiting time. If someone attempts to start the engine with an unrecognized key, the engine will not start, thereby helping to prevent vehicle theft.

Mazda immobilizer bypass