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 LE, STANDARD TRANSREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTANTI-THEFT SYSTEMSIMMOBILIZER CONTROL SYSTEM
2013 Suzuki SX4 LE, Standard Trans
Immobilizer Control System
2013 Suzuki SX4 LE, Standard TransSECTION Immobilizer Control System
- Precautions
- General Description
- Schematic and Routing Diagram
- Component Location
- Diagnostic Information and Procedures
- Immobilizer Control System Check
- DTC Check
- DTC Clearance
- DTC Table
- Scan Tool Data
- Immobilizer Indicator Light Does Not Come ON with Ignition Switch ON and Engine Stop
- Immobilizer Indicator Light Remains ON after Engine Starts
- DTC P1614: Transponder Response Error
- DTC P1615: Steering Lock Unit Communication Error
- DTC P1616: Unregistered Keyless Start Control Module
- DTC P1618: Keyless Start Control Module CAN Communication Error
- DTC P1621: Immobilizer Communication Line Error
- DTC P1622: EEPROM Reading/Writing Error
- DTC P1623: Unregistered Transponder
- DTC P1625: Immobilizer Antenna Error
- DTC P1636: Immobilizer Information Registration Failure
- DTC P1638: Immobilizer Information Mismatched
- DTC P1645: ID Code Communication Error
- DTC P1646: ID Code Incorrectness
- Inspection of ICM and Its Circuit
- Inspection of ID Controller and Its Circuit (If Equipped)
- Repair Instructions
- Special Tools and Equipment
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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.