F 250 4WD Super Duty V10-6.8L VIN Z CNG (2003)
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The driver door is ajar.
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The headlamp switch is in the PARK or HEAD position.
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The ignition switch state is in the OFF/LOCK position.
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The key is out of the ignition switch.
The headlamp on warning chime will stop sounding when any one of the conditions above are removed.
The headlamp on warning chime inputs are:
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ignition switch OFF/LOCK
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headlamp switch
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driver door ajar switch
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key-in-ignition switch
