You will need: T20 TORX wrench, flat blade screwdriver.
1. Disconnect the wire from the terminal «minus» battery.
2. Remove the bottom...
3....and the top of the column cover (see «Removal and installation of a casing of a steering column»).
4. Compress a clamp and disconnect a block of a plait of wires from the switch of modes of a screen wiper.
5. Squeeze the switch mounting clips...
6....and slide it out of its socket in the connector.
7. Similarly remove the switch of the index of turn and external illumination.
8. Install right...
9.... and the left switches in the reverse order of removal.