Check Brake system lights

[Church]

I am getting a check brake system light when I go over bumps. it is not all the time but has happened on numerous occasions. this will normally cause my radio to cut out and restart. I drive a 2007 expedition with 153k miles.

 

[deweysmith]

Sounds like you've got the mother of electric shorts. I would get started looking for corrosion or bare wires around any and all of the main harnesses under the hood.

 

[stamp11127]

The two problems are probably only related due to the bumps. I would suspect the warning lamp isn't causing the radio to power off.
Diagnose each problem separately using the wiring diagrams for your year.

 

[iimagine]

Can't figure why the radio shuts down but I had an F-150 a while back and the brakes had a very slow leak. When the brake fluid would get a little low, as I would go over RR tracks or down the bumpy dirt roads, the brake light would come on letting me know I needed to add fluid. I just kept a bottle behind the seat.

 

[Church]

Fixed the problem. Had a lose connection on the battery lead going to the positive terminal. wing nut was not fully tightened down causing some wires to be lose.

 

[stamp11127]

Thanks for the update. Can't beat the easy fixes.