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Q: Left brake light not coming on

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My left brake light will not come on. It is not a problem with the bulb. I have had a few people say it could be an issue with the internal computer.

The most common reason is usually the bulb. Other causes of the brake light not lighting is the wiring or possibly a fuse on that side of the vehicle. A qualified technician, such as one of our YourMechanic experts, can diagnose this issue by checking for power at the bulb and working back from there.

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