Volvo Repair: 1999 volvo abs brakes, volvo s80, 1999 volvo s80

Question
do 1999 volvo s80 rear brakes have a sensor for low brake pad material thickness? Our check your abs brakes system needs servicing. Could this cause this?

Answer
you don't have sensor on any brake pads  abs light is on your abs system has problem  to fix that you need to scan for abs code first with scan tool  and than let me know what fault code you have than i can tell you what you looking to fix and how much