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 MANUALSCHRYSLER2003300M V6-3.5L VIN MREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSBODY CONTROL MODULETESTING AND INSPECTIONSYMPTOM RELATED DIAGNOSTIC PROCEDURESPOWER DOOR LOCKS/RKEALL DOORS FAIL TO LOCK FROM ANY SWITCH
2003 Chrysler 300M V6-3.5L VIN M
All Doors Fail to Lock From Any Switch
2003 Chrysler 300M V6-3.5L VIN MSECTION All Doors Fail to Lock From Any Switch
Test 1 - 4:
Test 5 - 9:
SYMPTOM
ALL DOORS FAILING TO LOCK FROM ANY SWITCH
POSSIBLE CAUSES
- Fused B(+) circuit in junction block
- Lock relay output circuit shorted to ground
- Door lock relay-open/shorted coil
- Door lock relay-shorted terminals
- Door unlock relay ground open
- Door unlock relay ground circuit open
- Junction block-lock relay control circuit open
- Body control module - lock relay control open
RENDER: 1.0x
NO RELATED
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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.