When any turn signal on a vehicle flashes more rapidly than normal, then that means that a signal light on the side that is blinking is burned out. It could be either the front of back. You should check your signals to see if one is burnt out. The brake however should not affect this - you could have a short.
may have bad bulb
It causes pulsation or shudder on the brake pedals.
Could be, the brake pad wear indicators, rust,
the turn signal switch sends current to the turn signal flasher. it then goes to the bulb. The turn signal switch will turn on the turn signal and when the brake is applied it cancels out the brake light as it is a duel element bulb. 1 element is for brake and turn and the other is for parking lights. you can not have a blinker and a constant feed to the same element of the bulb at the same time.
It is a small solenoid that is accutated when the brake pedal is applied allowing shifter to move. This is located at the shifter and can be heard if all is quiet shifter in park and brakes applied.
Could be,E-Brake slightly applied, Sticky E-Brake cables, E-Brake out of adjustment, Brake fluid reservoir low, Brake system in need of maintenance,
Check the brake pads for wear. There is a metal tab attached to the pad so as the friction material wears out the tab contacts the brake rotor and it makes a squealing sound but as braking is applied the pressure on the brake pad causes the noise to stop.
Could be a loose ground for the left rear light socket.
The BOO (Brake On/Off) Switch may need to be replaced. If it is bad, it would cause the brake lights to NOT illuminate when the brake pedal is applied.
either dimmer switch or blown fuse If you are saying that the tail brake lights are working but the third brake light is not....It may be a defective turn signal switch in the steering column.
A disc brake rotor with excessive run out is a warped rotor which causes a pulsation in the brake pedal when the brakes are applied. A certain amount of run out is acceptable.
It depends on the car. Some cars require that you turn on the turn signals to make the 4-way flasher work. If that's the case with your vehicle, make sure the emergency flashers aren't on. Otherwise, it's probably a problem with the turn signal switch.