2004 Montero Sport Driver Side Brake Light Doesn't Work

Asked by Mar 20, 2015 at 09:47 PM about the 2004 Mitsubishi Montero Sport

Question type: Maintenance & Repair

Driver Side Brake light doesn't come on when pedal depressed.  The light is on when the headlights are on but doesn't glow brighter when pedal depressed.  I have checked the bulb, fuse and the brake light switch, all are good.  The passenger brake light works fine.

3 Answers


In most cars it's two separate filaments. Typically the brighter filament fails first (higher temperatures, etc). Replace the bulb, it's bad

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Best Answer

Hey Mark...this is a tough one. Bulb is in fact a dual filament. I replaced it with a like bulb and also swapped it with the passenger side bulb and the problem stays on the driver side.... loose wire or connector? Any online sources for a free wiring diagram? Or do you think its time to take it to the shop?


You could find which wire is under load when pedal pressed and run a wire from the other brake light. A multi meter on volts or a test light. Just don't shock your self :) the multimeter on ohms is a good way to check for a bad wire too. FYI most vehicle are 12 volt systems. So lowest volt setting when checking and need a buddy to press brake pedal.

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