Coolant Light L200

[cox2604]

Back in October 2011 my coolant light came on in the morning and I was afraid to drive it very far on low coolant. It was pretty cold that morning, and now that it keeps coming on I have noticed it's during the cold starts. I have a full thing of coolant so it's obviously not low, and the heat blows hot and my car never overheats... Could it be the thermostat or do I need a coolant flush?

Also, my windshield washer fluid light is ALWAYS on even though it is full... I assume the sensor inside the tank is just broken and constantly throwing that code for it...

[fdryer]

The coolant container serves multiple roles; maintains coolant capacity with see-thru level, surge protection, pressure and vacuum relief. A float sensor detects below seam level coolant if loss occurs. If you can see coolant in the container then there's enough coolant to keep the system filled

If coolant was never flushed, the old coolant will cause precipitation (crud) to build up inside the surge tank and float. If the float doesn't slide up and down the center tube where the sensor resides, an erroneous level warning may be displayed. Either remove the coolant tank for cleaning with HOT water and dishwasher detergent until the float can be heard to rattle freely or flush the entire cooling system for new coolant. Use whatever coolant you choose as long as the mixture is at least 50/50 anti-freeze/distilled water.

Check the electrical connector to the washer container. It may be disconnected or the sensor inside is faulty.

[s3nfo]

I've got this same problem and the sensor ring that floats on the sensor in the center of the tank is broken, so doesn't float. Only way to fix it is to replace the tank as sensor is not replaceable. I just unplugged the sensor wire on the bottom of the tank.