Brake light out on one side, but the running light works

Hello, my 2012 tundra has a brake light out on one side, but the running light works. The other side works running and brake. Is there a fuse somewhere or do I have a bad bulb? Also my driver side fog light has a brand new led bulb and quit working after 4 days. Any ideas or thoughts? Thank you

 

Brake light is probably a bulb and is super easy to check, think it's 2 screws. Fog light... check your connections, might be loose. Even chinesium leds tend to last longer than that.

 

The brake light bulb is a dual filament. Used with 2 functions, parking and brake. Brake filament probably went bad, parking will still work.

 

So update. Brake light is fixed. Now with my driver side fog light, where is the connection from the harness coming off the light up near the battery?

 

So what fixed it? I have the exact same issue on my driver side. My brake light doesn’t work, but running light does.

 

Replace the bulb. It's a dual filament.