If it fails, the coolant can’t circulate properly, causing the engine to overheat. Failed water pump: The water pump is responsible for circulating coolant through the engine.This can be caused by debris or buildup in the radiator, such as leaves or bugs, or by a buildup of rust or corrosion. Clogged radiator: A clogged radiator can’t dissipate heat properly, which can cause the engine to overheat.If it’s stuck open, it can allow too much coolant to flow through the engine, preventing it from warming up properly. If it’s stuck closed, it can prevent coolant from flowing through the engine, causing it to overheat. Faulty thermostat: The thermostat controls the flow of coolant through the engine.This can be caused by leaks in the cooling system, such as a leaking radiator or hose, or by not properly maintaining the coolant level. Low coolant level: If the coolant level is too low, it can’t absorb and transfer heat away from the engine properly, which can cause the engine to overheat.There are several potential causes of engine overheating, some of the most common include: Therefore, it is important to have the vehicle checked by a professional as soon as possible if the engine coolant temperature warning light comes on. An overheated engine can cause serious damage to the engine, so do not take a risk. It is important to address this issue on an urgent basis and it is recommended to stop driving your vehicle. Stop driving and let the engine cool down If the temperature reading does not return to normal, it is recommended to turn the engine off immediately and call for service. Also, shift the transmission into NEUTRAL (N) and idle the vehicle. If the Air Conditioning (A/C) system is on, turn it off to reduce the load on the engine. If the light turns on while driving, it is important to safely pull over and stop the vehicle as soon as possible. If the temperature continues to rise, the warning light will continue to flash and a continuous chime will sound for four minutes or until the engine is able to cool, whichever comes first. ![]() When the warning light turns on, a single chime will sound to alert the driver of the issue. This light will illuminate if the engine coolant temperature is too high, indicating that the engine is in danger of overheating. ![]() The engine coolant temperature warning light is a safety feature in Jeep Grand Cherokee that warns the driver of an overheated engine condition. ![]() If the coolant temperature gets too high, the ECM will activate the cooling system to bring the temperature down. The coolant temperature is monitored by a sensor that sends signals to the engine control module (ECM), which uses this information to adjust the engine’s performance and protect it from overheating.
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