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When the brake lights will not shut off, this is most commonly due to a problem with the Brake Light Switch. It's located under the driver's side dash, mounted to the top of the brake pedal arm. Inspect the electrical connector and wire harness for any loose, broken or damaged wires. Inspect the switch mount and contact points for any broken or misaligned parts. If the visual inspection checks ok, more than likely, the plunger internal of the switch has fail in the on position, and the switch will need to be replaced.
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