Originally Posted by MI6_007

I just had the brake lights stop working in my car. Was able to trace it to a relay under the hood. Under the hood, drivers side, against the firewall is a black fuse box. Remove both covers, so that you are open to see the two relays towards the firewall. Mine were original, the one towards the outside of the car was black and the one towards the inside was yellow. The yellow one on mine was making a clicking sound, so I replaced it with one from O'Reilly for $16, and problem fixed. Granted I didn't have the warning light come on, but it still sounds like a possible cause.