the brake lights and the abs light are on all the time does someone knows how to fix that?

 

There is not one answer for a method to fix that, you need to perform some basic troubleshooting steps to find the problem. Have you confirmed the proper brake fluid level, checked the pads, rotors, rear shoes and wiring to the rear ABS sensor? There is also wiring connected to the proportioning valve that should be checked for breaks and corrosion.

You could have a bad ABS module or proportioning valve but you need to check the basics first before you start throwing parts at your problem.