I think that you will find it is the low coolant light, check the level of the coolant before you start, top up if required, if a bit low, get a cooling system pressure test done, this will locate any small leak, if level is okay, it may just be the extreme cold affecting the sensor.
Here is a link to the video
https://youtu.be/W8kra65m15c
mark (mhpautos)
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Thursday, December 16th, 2010 AT 2:08 AM