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 MANUALSSUZUKI2013SX4 CROSSOVER, AUTOMATIC CVT TRANSREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 110 (KEYLESS START SYSTEM)GENERAL DESCRIPTIONDESCRIPTION OF KEYLESS START SYSTEM PARTS AND FUNCTIONS

2013 Suzuki SX4 Crossover, Automatic CVT Trans

Description of Keyless Start System Parts and Functions

2013 Suzuki SX4 Crossover, Automatic CVT TransSECTION Description of Keyless Start System Parts and Functions

WARNING: This page is about a different car, the 2011 Suzuki SX4. However, it is still accessible from the selected car via links, so may be relevant.

KEYLESS START SYSTEM PARTS AND FUNCTIONS

Parts	Function
Keyless start control module	Activates each antenna Verifies ID code of remote controller Requests steering lock unit to release steering lock Requests BCM to lock or unlock doors Requests BCM to open trunk lid (Sedan) Controls key indicator light in combination meter Transmits its ID code to ECM
Remote controller	Receives request signal from each antenna Transmits ID code and request signal to keyless start control module Request keyless start control module to lock or unlock doors (keyless entry system function)
Request switch	Requests keyless start control module to activate each antenna
Center antenna	Transmits request signal to remote controller
Luggage room/trunk room antenna	Transmits request signal to remote controller
Driver side door antenna	Transmits request signal to remote controller
Passenger side door antenna	Transmits request signal to remote controller
Rear end door/trunk lid antenna	Transmits request signal to remote controller
Steering lock unit	Releases steering lock
Unlock button	Transmits door unlock request signal (keyless entry system function)
Lock button	Transmits door lock request signal (keyless entry system function)
BCM	Controls each door lock actuator Controls trunk lid opener actuator (Sedan) Controls warning buzzer Lights hazard warning light and interior (DOME) light (answer back)
Key indicator light	Indicates operation state of keyless start system (indicates check result of remote controller ID code)
ECM	Checks keyless start control module ID code Transmits its ID code to keyless start control module Starts engine

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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.