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 ...

Symbols in the instrument panel
WARNING If and come on at the same time and the brake level is below the MIN mark in the reservoir or if a brake system-related message is shown in the information display: DO NOT DRIVE. ...

Precautions when the vehicle is being towed
Attach jumper cables (see page 116) to provide current for releasing the electric parking brake and to move the gear selector from the P position to N. Be sure that the steering wheel lock ...