When you select the door mirror using the switch 2, the warning light built into the switch will appear. Then use the button 1 to adjust it to the desired position.
The presence and operation of the warning lights VARY ACCORDING TO THE EQUIPMENT AND COUNTRY.
warning
If no lights or sounds are apparent, this indicates a fault in the instrument panel. This indicates that it is essential to stop immediately (as soon as traffic conditions allow). Ensure that the vehicle is correctly immobilised and contact an approved Dealer.