Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSMAZDA20113 MAZDASPEED, 2.3 3REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 242 (SECURITY SYSTEM AND LOCKS SYSTEM)KEYLESS CONTROL MODULE REMOVAL/INSTALLATION

2011 Mazda 3 Mazdaspeed, 2.3 3

Keyless Control Module Removal/Installation

2011 Mazda 3 Mazdaspeed, 2.3 3SECTION Keyless Control Module Removal/Installation

WARNING: This page is about a different car, the 2004 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.

When replacing the keyless control module, perform the following procedure:
- KEYLESS CONTROL MODULE CONFIGURATION (See KEYLESS CONTROL MODULE CONFIGURATION .)
Disconnect the negative battery cable.
Remove the front side trim. (See FRONT SIDE TRIM REMOVAL/INSTALLATION .)
Remove the nut and screw.
Remove the connector clip installed to the bracket by shifting the keyless control module downward.
Disconnect the keyless control module connector.

Fig 1: Keyless Control Module Removing/Installing
Courtesy of MAZDA MOTORS CORP.
Push the stopper with a small screwdriver and remove the bracket in the direction shown by the arrow.
Install in the reverse order of removal.

Fig 2: Identifying Removal Direction Of Bracket
Courtesy of MAZDA MOTORS CORP.
When replacing the keyless control module of vehicles with the immobilizer system, perform the following procedure:
- Refer to IMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY .
- Transmitter ID code change (See TRANSMITTER ID CODE CHANGE .)

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.