Abstract:
The cooling system of a vehicle is designed to keep the vehicle engine within its standard operating
temperature. This prevents overheating, prolongs engine life, reduces harmful emissions, and
provides better fuel economy, efficient combustion, and optimized performance.
Overheating causes irreversible damage to the engine and often requires an expensive repair.
This project aims to develop an intelligent overheating alarm system that will effectively detect
and alert drivers about rising engine temperatures. This project is tailored for the 2012 Toyota
Yaris. Using the vehicle's coolant temperature sensor, Arduino Uno and Arduino IDE application,
and alarm buzzer together with other circuit components, a system was developed to detect and
alert drivers of high rising engine temperature before the engine overheats. A dual method
calibration approach using a multimeter and a diagnostic machine ensures accurate recording of
voltage signal and temperature to establish a correlation for temperature threshold input. The
Arduino-based technology interprets the CTS signal and activates the alarm at the predefined
thresholds. Rigorous testing was carried out to confirm our system's reliability.
