About a day ago,

the hand break sign of my 2002 166 2.5l sporstronic will not dissappear from the dashboard after releasing it. I have to push the accelerator pedal harder to move faster. In cases where the hand break sign dissappears, changing from parking to reverse or drive creates this violent shaking of the car. The yellow ABS sign also keeps appearing. What is going on please? Any help will be most appreciated. Thanks.