Sequence of execution
1. Prepare the car for work (see "Preparing the car for maintenance and repair").
2. Disconnect the upper retainer 1, disengage the two lower stops 2 and move the trim away from the door pillar.

3. Press the lock, disconnect the speaker wire harness connector and remove the cover.
(Article copied from the resource: Ladaman.ru)

4. Using a thin slotted screwdriver, press the lock...

...and disconnect the wiring harness connector from the mirror.

5. Using a 10 mm socket wrench or TORX T20, unscrew the three mirror mounting nuts and remove it.

6. Install the new mirror in reverse order.
