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 ...

Seat belt maintenance
Check periodically that the seat belts are in good condition. Use water and a mild detergent for cleaning. Check seat belt mechanism function as follows: attach the seat belt and pull rapidly on t ...

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. ...