See also:

Deposit control gasoline (detergent additives)
Volvo recommends the use of detergent gasoline to control engine deposits. Detergent gasoline is effective in keeping injectors and intake valves clean. Consistent use of deposit control gasolines ...

Using the system's menus
Selections in the RSE menus are made using the remote control. See page 251 for more information about the RSE menus. ...

Summary
The camera is activated when the gear selector is moved to R (this can be changed in the MY CAR menu) and the image is shown on the center console display. When backing up, two solid lines are ...