Immobilizer Unit Removal/Installation

WARNING: This page is about a different car, the 2004 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the negative battery cable.
Remove in the order indicated in the figures.

Fig 1: Removing/Installing Immobilizer Unit (Legend)
Courtesy of MAZDA MOTORS CORP.

Fig 2: Removing/Installing Immobilizer Unit
Courtesy of MAZDA MOTORS CORP.
Install in the reverse order of removal.

CAUTION:

After replacing the immobilizer unit with a new one, the engine cannot be started without reprogramming the ID number of the key and the code word of the new immobilizer unit. Input the ID number and code word. (See IMMOBILIZER SYSTEM REPROGRAM PROCEDURE .)