2004 Nissan Quest Traction Control System and SLIP light is on

Does anyone have any idea what causes the sensor(s) to come on, and what to do to reset or replace the sensors(costs..)?
Or has anyone experienced the same with their Quest, if so, how was it resolved?

Check the brake fluid if it
Check the brake fluid if it is low! if it's, it means you need a new brake pads
What does brake fluid have to
What does brake fluid have to do with TCS and Slip light? Mine are on too and my car wont rev past idle Check engine light is also on.
Did you ever get this
Did you ever get this diagonosed / fixed?