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 MANUALSCHEVROLET2012SONIC L4-1.8LREPAIR AND DIAGNOSISBODY AND FRAMELOCKSKEYLESS ENTRYTESTING AND INSPECTIONSYMPTOM RELATED DIAGNOSTIC PROCEDURESREMOTE FUNCTIONSSYMPTOMS - REMOTE FUNCTIONS
2012 Chevrolet Sonic L4-1.8L
Symptoms - Remote Functions
2012 Chevrolet Sonic L4-1.8LSECTION Symptoms - Remote Functions
Symptoms - Remote Functions
Note:
The following steps must be completed before using the symptom tables.
1. Perform Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle before using the Symptom Tables in order to verify that all of the following are true:
* There are no DTCs set.
* The control modules can communicate via the serial data link.
2. Review the system operation in order to familiarize yourself with the system functions. Refer to Keyless Entry System Description and Operation Description and Operation.
Visual/Physical Inspection
* Inspect for aftermarket devices which could affect the operation of the Keyless Entry System. Refer to Checking Aftermarket Accessories Checking Aftermarket Accessories.
* Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
Intermittent
Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections.
Symptom List
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
* Keyless Entry System Malfunction Keyless Entry System Malfunction
* Remote Vehicle Start Malfunction Remote Vehicle Start Malfunction
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.