Red Low Coolant Light Warning

My wife's 2012 Prius v (133k miles) had the red low coolant light warning on for <1 minute and went away while driving on the freeway. The car drove normally, so didn't noticed anything changed from the warning.

I checked the next day and noticed that the engine coolant reservoir container had coolant spot residue everywhere and some on the passenger engine side. I figure the pressure must've released some coolant when driving. I cleaned the area and drove around and didn't notice any leaks or warning light.

Have any of y'all experience this? Water pump ready to go? Head gasket going?

Oil level is good and clean. The only issue I see is slow oil seepage in maybe timing chain tensioner area (always caked with oil).

I'll start monitoring the car every few days to see if I get leaks on the reservoir area. If so, I'll make an appt. with a mechanic.

Thanks!

 

@ChapmanF: You're right, it was the high coolant light. I checked and it seemed to be at the Low line and filled it right to the Full or crease in the bottle.

What's the typical life of a water pump?