Final answer:
To reset a BTMS overheat warning, allow the system to cool down, which may involve stopping the vehicle and waiting, or manually resetting the system using diagnostics after the temperature has normalized.
Step-by-step explanation:
Resetting a BTMS Overheat Warning
When a BTMS (Battery Thermal Management System) triggers an overheat warning, the primary way to reset the warning is to allow the system to cool down. This typically involves stopping the vehicle if it's an electric or hybrid car, and waiting for the temperature to reduce. In some systems, you may need to turn off the vehicle completely to initiate a system reset. Additionally, in more advanced BTMS setups, a manual reset or diagnostic tools can be required to clear the warning after the system has cooled. However, it's critical to recognize that an overheat warning is a safety feature indicating thermal stress on the battery, which should not be ignored without proper inspection of the vehicle's battery health and BTMS operation.