See also:

ABS (Anti-lock brake system)
If the warning light comes on, there is a malfunction of the ABS system (the standard braking system will still function). The vehicle should be driven to a trained and qualified Volvo service ...

Tire pressure monitoring light
The tire pressure monitoring system uses sensors mounted in the tire valves to check inflation pressure levels. When the vehicle is moving at a speed of approximately 20 mph (30 km/h) or faster, ...

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. ...