You will need a soldering iron to replace the sensor
Remove
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Remove the mirror glass using the special tool (Cag. 1363) (fig. 1).
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Remove the mirror housing by pressing the tabs (fig. 2).
Remove the sensor from the bracket.
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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.