How do you change the rear window heater switch on a peugeot 106?

To change the rear window heater switch on a Peugeot 106, first disconnect the car battery to ensure safety. Remove the trim panel around the switch by gently prying it off, then unscrew the switch from its mounting. Disconnect the wiring harness from the back of the switch and replace it with the new switch. Reassemble the trim panel and reconnect the battery.