Cases regarding children death due to the entrapment in the vehicles during hot weather is increased. Our research aims are to study the opinions amongst parents regarding the safety awareness on the child safety in the vehicles and to investigate the preferred operations of child presence detection system in the vehicles. A quantitative research was carried out with surveys of audience awareness while driving with children inside vehicles and the preferred operating child presence detection system in the vehicles. Results found that many parents in Malaysia are aware of the need of the safety for their children because most of the parents are aware to prepare the child seat in the car. They also alert with the safety measurement taken while carrying the children in the car and proposed to all parents in Malaysia to have children car seat in the car. The survey results also found that the majority of the parents preferred to have better sound indicator for child detection system in the vehicles from the car reminder system. Based on the information obtained, 70% of the parents also are willing to pay higher priced for the child detection system in the car because they believed that leaving their children in the car for more than 30 minutes can caused death. Therefore, child presence detection system should be design and applied to all vehicles in Malaysia by applying a smart reminder system while considering the affordable price for the market.