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2002 buick century low coolant light on3/10/2024 At O'Reilly Auto Parts, we carry replacement coolant temperature sensors and switches for most vehicles, and can also test Check Engine lights for free to help you make an accurate and informed diagnosis before starting your repair. If your temperature light fails to activate, or if your dash gauge is not working, you may need to replace your coolant temperature sensor to stay aware of problems in your cooling system. 2002 Buick Century Low Coolant Light On: 3 Complaints Buick Century 2002 cooling system January 17: GM Again Recalls Verano and Cruze Over Roof-Rail Airbags Low Coolant Light On. If your engine is frequently overheating or using more gas than usual, this could be an indication of cooling system problems, so it's best to check your coolant level and condition to determine the source of the issue. In some cases, you may not notice any symptoms of failure, but your engine may overheat without warning because your temperature light does not activate. This may result in especially low or high coolant temperature readings, your vehicle underperforming, or your Check Engine light may come on. This would be the simplest problem to rectify. When the gas cap is loose, it sends a signal to the ECU, mimicking a leak in the system. not all vehicles have a low coolant light but yes if its low you just add more. If you’ve just filled up the tank, you may not have put the gas cap back in place. If you didnt pay extra for a coolant flush then no the coolant wasnt flushed. With time and due to exposure to high temperatures, the coolant temperature sensor or switch may wear out and send inaccurate readings or a complete lack of signal to the ECM, gauge, or warning light. You will lose coolant so try to swap it out quick or drain some of the coolant out. Here are some of the most common causes of a service engine soon light: 1. Checked the radiator and coolant over flow, both are at recommended levels. ![]() Coolant temperature sensors also deliver information to your engine control module (ECM) to prevent engine damage by engaging limp mode or making other adjustments. ![]() This helps prevent damage to your engine due to overheating, which may be caused by low cooling system levels, radiator or thermostat failure, and other factors. The coolant temperature sensor on your vehicle monitors the temperature of your cooling system and feeds the temperature gauge or temperature warning light on your dash.
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