xtwoonamatchx wrote:When you say brake lights do you mean the ones on the left and right? If so they are supposed to come on so people can see the back of your car at night. What your seeing is a dual filament bulb. When your headlights come on, the dim filament lights up, and when you hit the brakes, the second filament lights making it brighter.
Hello friend, I think the best way to solve it would be to enter with diagnostic equipment (scanner) to read the fault memory of the BCM and also IPDM, as there must be some fault record that will help you in the circuit that must be interfering . The FSM recommends these procedures with diagnostic equipment
DATA MONITOR Displays BCM input/output data in real time.
ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.
SELF-DIAG RESULTS Displays BCM self-diagnosis results.
I Hope have help