The exterior mirrors are electrically controlled by 3 switches on the front center console. The mirrors have 3 controls, a left and right selection switch operating the required mirror and a directional toggle switch for adjusting the mirror glass position. Vehicles fitted with front seats that include a position memory function also include position memory of the exterior rearview mirrors. This provides the ability for the driver's seat and the rearview mirror positions to be stored for several different drivers and recalled at the press of the remote key or memory button on the side of the drivers seat. Also on these vehicles, when reverse gear is selected the passenger side mirror automatically dips to aid parking manoeuvres. On some vehicles the exterior rearview mirrors also incorporate a heating element within the mirror glass. When the rear window demister is operational, the mirror heating element also operates.