No tool is required to replace the sensor.
1. Disconnect the wire from the terminal «minus» battery.
2. Remove the crankcase protection...
3....and the right engine mudguard (see «Removal and installation of mudguards and engine crankcase protection»).
4. Wring out a clamp of a block of wires...
5....and disconnect the block from the outside temperature sensor.
6. Turn the sensor counterclockwise until it stops...
7.... and remove it from the hole in the front bumper trim.
8. Install the outdoor temperature sensor and all removed parts in the reverse order of removal.