That happend to ours, they had to replace the board in the dash .. fixed the problem.
Check the brake light switch.
Check the fuses then check the brake light switch.
i think that the light switch is shorting out are the auto light switch shorting for the thumb switch
it has a bad turnsignal switch
It is located under the drive side dash. The brake pedal mechanism presses against the switch when you press on.
you can find the switch on the back of the brake pedal.
switch is on side of transmission under the car
You probably have a faulty brake light switch
If the brake light fuse is good and the brake light bulbs are good it's probably a faulty brake light switch.
Switch may be bad
It only has fuses by the light switch
most common cause is a burned out light bulb, if not the bulb,check fuses and stop light switch