What does "brake failer service urgent" warning mean? on 2001 Volvo S80

This happens whenever i go around a corner or brake more than slightly.

Asked by for the 2001 Volvo S80
Sounds like the brake fluid may be low in the reservoir (possibly a sign of low brake pad material). Safest to get it checked out as soon possible. Check here or try this link you may be able to down load a free copy of the owner's manual for your vehicle