To expand a bit it depends on the switch can be anywhere between 83 and 108c. and on some cars the fans don't go full blast till 118c
The cut in temperature must always be a few degrees higher than the nominal thermostat temperature, the switch off temperature should not be below the thermostat temp.
A proper temperature gauges that reads in degrees C can take a bit of getting used too. On modern tintops the temperature gauge touches "N" at about 75c and doesn’t go much above "N" until 115c see graphic.
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