Hi Magago2009, which is turned on the stop light is not good, neither for your car nor for any. First you should see if the stop light is turned on accompanied by some other, oil pressure, motor temperature, etc. You should go as soon as possible to a workshop that verifies the car, because the failure may be of some motor, lack or water sensor in the radiator or something more serious that can cause a much greater breakdown. You will tell us.