See also:

Using HDC
HDC allows the car to roll forward at a maximum speed of 6 mph (10 km/h), and 4 mph (7 km/h) in reverse. However, the accelerator pedal can be used to select any speed that is possible in firs ...

Limitations
Strong sunlight, reflections, extreme light contrasts, the use of sunglasses, or if the driver is not looking straight ahead may make the visual warning signal in the windshield difficult to see. ...

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 gasol ...