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What are you asking; what the function of the warning system(s) are or what could be causing it/them to turn on? In general: Most cooling systems only have warning systems for excessive temperatures, i.e temeprature gauge and/or warning lights. Some may have a warning system for low coolant levels in the expansion (header) tank also. In rare cases, there are systems for cooling system pressure and glycol dilution levels. If any one of these systems are active, it indicates either a fault in the cooling system or prehaps in the sender unit and/or warning system itself, i.e. high temp warnings upon a cold start. Signs of cooling systems problems are a regular loss of coolant, high engine operating temps, ineffective cooling fans, pregnant hoses, a hot smelling motor when running, peeling paint on the rad itself etc If you are a little more specific prehaps I can help more. Thanks, CHarlie

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Q: What is the warning indicator for radiator or coolant problems?
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What does warning light with waves under it on dashboard mean?

If it is a car with waves under it then it is a slip indicator. If it is just waves it can be low coolant or low windshield fluid. It can also be rear defroster indicator. Need better description and make, model, and year of vehicle to be sure.


On your vauxhall vectra 04 a warning light has just started it looks like a square tank with water half full in it but your radiator is ok?

I'm guessing, but the coolant level sensor is probably in the overflow bottle and it is low. This is so you notice it before the radiator itself is low.


Coolant warning light on a 1991 dodge stealth?

Most newer cars have the coolant sensor in the overflow bottle. Filling this will probably take care of it. Where the coolant is going is another issue. Head gas kit


Will your fuel indicator light still come on if your gas gauge is not working?

my gas gauge doesnt work and i dont get a warning light when about to run out, mine goes to fuel when its about to run out


What type of refrigerant does a 1993 buick park avenue ultra take?

Hello, Jamison here, That was A changeover year, It would be hard to say with certainty,,, But you can find out very easy, look under the hood, on the passenger side either on the inner fender well or on the front support by the radiator,,, There will be A sticker warning about the danger of explosion due to impropper serviceing of the A/C system,,, It will have the type of coolant used in the car,,,, R12 or R134A,,,,,,,,,,,, Good luck, Jamison.

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It is the radiator warning light. Usually it indicates low radiator fluid level. I have had this come on when I have had some minor radiator leaks leading to radiator coolant level going down.


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The sensor in the reservoir is probably bad. It is located in the bottom of the reservoir and fairly easy to change.


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On a Mercedes-Benz C-Class how do you shut off the coolant level warning if the radiator is full?

The coolant light should be going out when the system is filled. The sensor itself or the float system is probably bad.


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