What indicator typically shows that a vehicle's engine temperature is too high?

The temperature warning light is specifically designed to indicate when the engine's operating temperature exceeds its normal range. This light activates to warn the driver that the engine is running too hot, which can lead to overheating and potential engine damage if not addressed promptly. The light may be red or yellow, depending on the vehicle's design, serving as a critical alert for the driver to take action, such as checking the coolant level or stopping the vehicle to avoid further damage.

In contrast, the fuel gauge measures the level of fuel in the tank and does not provide information about engine temperature. The oil pressure indicator monitors the lubrication system's pressure, which is important for engine health but unrelated to temperature. The battery voltage gauge tracks the electrical system's voltage, which can indicate issues with the battery or charging system, but again is not connected to engine temperature. Hence, the temperature warning light is the appropriate indicator for monitoring engine temperature and ensuring safe vehicle operation.