See also:

Fuel filler cap
The fuel filler door, located on the right rear quarter panel, is connected to your vehicle's central locking system. ...

Unleaded fuel
Each Volvo has a three-way catalytic converter and must use only unleaded gasoline. U.S. and Canadian regulations require that pumps delivering unleaded gasoline be labeled "UNLEADED". ...

BRAKE – Brake failure warning light
If the light comes on while driving or braking, stop immediately, open the hood and check the brake fluid level in the reservoir. Canadian models are equipped with this warning light. ...