2005 Limited Roadster 6 speed manual White. 72k miles. While engine running but sitting still, if I press on the brake pedal hard the ESP & BAS light comes on and stays on until I restart the car. I bought this car with a salvage title with 45k miles with light rear end damage. This condition was present when buying the car. When normal diving the light only comes on if braking hard. This then disengages the cruise control. Could this be a faulty Brake PRESSURE switch or is it a bad BAS unit?