I was driving and my brake light was on I apress the brake pedal but never checked because they still worked fine but last night I was driving and my brakes pedal got stiff and my power steering went out at the same time could u tell me what happen?

Hydro-boost brake units use power steering pressure instead of engine vacuum for brake assist. ... It has hydraulic lines leading from the power steering pump to the power steering gear, much like the lines incorporated into the power steering system. It uses a spool valve and power piston to regulate pressure.. Symptoms of a Bad or Failing Hydraulic Brake Booster Reduced braking power. One of the first symptoms of an issue with the brake booster is reduced braking power. ... Brake pedal hard to press. Another common symptom of an issue with the hydraulic brake booster is a hard brake pedal. ... Fluid leaks.