You will need a soldering iron to replace the sensor
Remove
Remove the mirror glass using the special tool (Cag. 1363) (fig. 1).
Remove the mirror housing by pressing the tabs (fig. 2).
Remove the sensor from the bracket.
Cut the wires (fig. 3).
Installation
Solder the two temperature sensor wires.
Insulate the two sensor wires with heat shrink sleeves.
Install the mirror housing.