See also:

Operating DAC
Certain settings can be made from the menu system controlled from the center instrument panel. The current system status can be checked on the trip computer’s display by using the buttons on ...

Air distribution table
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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 ...