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There is a brake light switch mounted high up on the brake pedal. The switch has a plunger which is released (extends) when you step on the brake pedal. This completes an electrical circuit. The switch has either come loose from where is it mounted so that the plunger is released all the time or part of the plunger has broken off. This has the same effect as having the plunger released.

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โˆ™ 2004-09-15 01:00:41
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Q: Why do the brake lights constantly stay on whether the vehicle is on or off?
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