The immobilizer system is a vehicle theft prevention device that only allows remote transmitters that have been previously programmed to the vehicle to start the engine.
The start stop unit performs immobilizer system fail-safe. (See START STOP UNIT.)
The immobilizer system-related parts programmed to the immobilizer system have a programmed key ID number, and starting the engine is only permitted when the key ID number matches.
Immobilizer system-related parts can be programmed using the Mazda Modular Diagnostic System (M-MDS).
A maximum 6 remote transmitters can be programmed to one vehicle.
If the following parts are replaced, it is necessary to program them to the immobilizer system.
Remote transmitter (transponder)
PCM
Start stop unit
Operate in the following order to allow engine starting.