Dead rear lights

[the_dean]

I'm running into a real annoying issue with my 2018 Mazda CX5. A couple of days ago, my rear brake lights and tail lights suddenly stopped working. The front lights and turn signals stayed fine, and I didn't blow any bulbs as far as I can tell. I already checked the fuses under the hood and inside the cabin, but everything looks good there but just the BCM I havent faced yet
Appreciate any guidance or ideas for troubleshooting

 

[you say?]

Please check the ground connections in the rear. For safety and just to answer your question, as those can cause weird light failures when they corrode. If that has no issues, then yeah the BCM could be the next thing to look into.