Today I took my wifes car in for service. As she was driving my CF I noticed that the center high mount stop lamp (CHMSL)/ 3rd brake light worked sporadically. Sometimes when she applied the brakes, the tail lights worked and all the LEDs lit up bright

, but sometimes only the tail lights came on

. Could this be a loose connection or is it time to replace the CHMSL light bar? Or is my wife playing a trick on me

.
Please help!!! This is going to drive me crazy!!!