Name that Sensor

[bluedemon]

Can anybody please name the below sensors?
I am trying to figure out which one controls the aux fan. My aux fan works but is not engaging.

1.
462451
2.
462452

[WarMachine7]

I believe the first one from what i can see is the sensor that measures the amount of coolant u have, and it goes into the expansion tank.

The sec pic i am stumped sorry.

All hail the god of War