See also:

Symbols and messages in the display
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Auxiliary sound level
If the external sound source's volume is too high, the quality of the sound may be impaired. This can be prevented by adjusting the external sound source's input volume. 1. While playing the ...

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 ...