Causes of coolant temperature warning light comes on (photo source: Stockfreeimages) At this point, you need to park your car in a safe area with shade (if it’s summer) to open the bonnet. When the coolant temperature warning light goes on, the engine is seriously overheated, which can be caused by overheating, lack of cooling water or a cooling system that is having trouble. If the water is not sufficiently cooled, the parts in the vehicle will overheat, allowing for extremely damage. Coolant water quality will have a dramatic effect on the efficiency of the cooling system. ![]() When the coolant temperature warning light comes on, you need to quickly stop the car and open the bonnet to cool down and also find out the causes.Ĭoolant is considered to be an intermediate that transfers the heat from the engine body to the cooling tank. ![]() The Causes of Coolant Temperature Warning Light Comes on The car’s computer will often save the code in case of a problem, which to get the tools through the scan and connect, this is an extremely useful tool in the process of identifying problems for the coolant temperature warning light. Otherwise, your car will be in low coolant mode again and the motor overheating risk will occur again. Remember once the low coolant appears means that your car has experienced some leakage and needs to be repaired as soon as possible. What the coolant temperature warning light means (photo source: Ensuper) And the most common reasons for a glowing of this temperature light car are usually the temperature or the fluid level of the coolant. In case that the coolant temperature warning light is still illuminated after starting the vehicle, it will signal that the vehicle is experiencing trouble in the system. ![]() When the engine is started, the coolant warning light will illuminate for a few seconds to check the light bulb. What The Coolant Temperature Warning Light Means The coolant temperature warning light comes on when there’s a problem with the fluid level or the temperature. The computer system of your vehicle monitors the overall fluid level and the coolant temperature. It looks like a thermometer or shows the word ‘temp’ or ‘engine overheating.’ Whenever these words flash or the sign lights up, your car is in danger. You will find it on the dashboard gauge cluster. For this reason, it’s necessary to take the coolant temperature warning light seriously. (^P.Engine damage can happen for many reasons, and overheating is one of them. Water can be used in an emergency measure if engine coolant is unavailable. If necessary, add engine coolant up to the "FULL" line. If the fans are not operating: Stop the hybrid system immediately and call your local Toyota dealer.Ĭooled down sufficiently, check the engine coolant level and inspect the radiator core (radiator) for any leaks. If the fans are operating: Wait until the high coolant temperature warning light goes off and then stop the hybrid system. ![]() Step]~3 Check to see if the cooling fans are operating. If you do not see steam: Leave the hybrid system operating and carefully lift the hood. Carefully lift the hood after the steam subsides and then restart the hybrid system. If you see steam: Stop the hybrid system. STEp2 Check to see if steam is coming out from under the hood. StepQ Stop the vehicle in a safe place and turn off the air conditioning system. N If the high coolant temperature warning light comes on or flashes The power control unit may be overheating.įollow the correction procedure as described below. L " HYBRID SYSTEM OVERHEAT" is shown on the multi-information display: L The high coolant temperature warning light comes on or flashes: The engine may be overheating. The following may indicate that your vehicle is overheating:
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