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 ...

Warning symbols on the battery
NOTE A used battery should be disposed of in an environmentally responsible manner. Consult your Volvo retailer or take the battery to a recycling station. ...

Electrical system
General information 12-volt system with voltage controlled generator. Single wire system in which the chassis and engine block are used as conductors, grounded on the chassis. Battery If you ...