Mazda 3 manuals

Mazda 3 Owners Manual: Immobilizer System

The immobilizer system allows the engine to start only with a key the system recognizes.

If someone attempts to start the engine with an unrecognized key, the engine will not start, thereby helping to prevent vehicle theft.

If you have a problem with the immobilizer system or the key, consult an Authorized Mazda Dealer.

  • Radio equipment like this is governed by laws in the United States.
  • Changes or modifi cations not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
  • To avoid damage to the key, do not:
  • Drop the key.
  • Get the key wet.
  • Expose the key to any kind of magnetic fi eld.
  • Expose the key to high temperatures on places such as the dashboard or hood, under direct sunlight.
  • If the engine does not start with the correct key, and the security indicator light keeps illuminating or fl ashing, the system may have a malfunction. Consult an Authorized Mazda Dealer.





The system is armed when the ignition is switched from ON to off.

The security indicator light in the instrument cluster flashes every 2 seconds until the system is disarmed.


The system is disarmed when the ignition is switched ON with the correct programmed key. The security indicator light illuminates for about 3 seconds and then turns off. 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.

Switch the ignition off, and then restart the engine. If the engine does not start after 3 or more tries, contact an Authorized Mazda Dealer.


Modification and Add-On Equipment
Mazda cannot guarantee the immobilizer and the theft-deterrent systems' operation if the system has been modified or if any add-on equipment has been installed. CAUTION To avoid damage t ...

Theft-Deterrent System
If the theft deterrent system detects an inappropriate entry into the vehicle, which could result in the vehicle or its contents being stolen, the alarm alerts the surrounding area of an abnormali ...

Other materials:

Brake Hose (Rear) Removal/Installation [Mzr 2.5, Mzr 2.3 Disi Turbo]
1. Remove in the order indicated in the table. 2. Install in the reverse order of removal. 3. Add brake fluid, bleed the brakes, and inspect for leakage after the installation has been completed.. 1 Brake pipe (See Clip and Brake Pipe Installation Note.) ...

Buckle Switch Inspection
Driver Side 1. Switch the ignition to off. 2. Disconnect the negative battery cable.. 3. Remove the front seat.. 4. Remove the front buckle.. 5. Inspect for continuity between the buckle switch terminals using a tester. If not as indicated in the table, replace the driver sid ...

Keyless Entry System
This system uses the key buttons to remotely lock and unlock the doors and the liftgate/trunk lid, and opens the trunk lid. The system can start the engine without having to take the key out of your purse or pocket. It can also help you signal for attention. Operating the theft-deterre ...

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