With the raise of vehicle usage the technology development also grooming up by introduction and the usage of multiple sensors in ECU – Electronic control unit as the result of this the heating up problem existing so that the carbon di oxide emission is also getting increased. Another major problem which arises in the Automotive embedded system in the autonomous vehicle is the safety and security based system by priority based monitoring and controlling the temperature and the toxic gas emission to minimise the drastic cause like the death due to the emission of toxic gases like co2 from temperature raise and Freon from the air conditioner in car. To make the drawbacks to bring out the betterment in the autonomous vehicle by using the Tinker cad simulation tools.With the raise of vehicle usage the technology development also grooming up by introduction and the usage of multiple sensors in ECU – Electronic control unit as the result of this the heating up problem existing so that the carbon di oxide emission is also getting increased. Another major problem which arises in the Automotive embedded system in the autonomous vehicle is the safety and security based system by priority based monitoring and controlling the temperature and the toxic gas emission to minimise the drastic cause like the death due to the emission of toxic gases like co2 from temperature raise and Freon from the air conditioner in car. To make the drawbacks to bring out the betterment in the autonomous vehicle by using the Tinker cad simulation tools.With the raise of vehicle usage the technology development also grooming up by introduction and the usage of multiple sensors in ECU – Electronic control unit as the result of this the heating up problem existing so that the carbon di oxide emission is also getting increased. Another major problem which arises in the Automotive embedded system in the autonomous vehicle is the safety and security based system by priority based monitoring and controlling the temperature and the toxic gas emission to minimise the drastic cause like the death due to the emission of toxic gases like co2 from temperature raise and Freon from the air conditioner in car. To make the drawbacks to bring out the betterment in the autonomous vehicle by using the Tinker cad simulation tools.