Brake light relay?

If you're talking about the brake light relay then yes it should be in the underhood fuse/relay center, on left rear of engine compartment. This guide will help you check it with the location in the diagrams below.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.