The ABS (anti-lock brake system) on your Volvo S70 is a system that keeps your vehicle's brakes from locking up either during a fast stop or under adverse driving conditions. Each wheel has an individual ABS sensor that relays wheel speed and braking conditions back though to your Volvo's main ABS control module. If the ABS unit stops working altogether it means the control module has gone bad and it needs to be changed.
Things You'll Need:
ABS control module
It is easy to do this.
1.Open your Volvo's hood and remove the negative battery cable with a socket wrench.
2.Use a screwdriver to loosen the screws securing the air filter box, then remove it so that you have easier access to the ABS module. The ABS module is located to the immediate left of and underneath the fuse box.
3.Remove the electric wiring harness from your Volvo's ABS module.
4.Remove the four Torx head bolts that hold the ABS module in place. You can use a 4-mm socket to do this. Once the bolts are removed, slip the old ABS module off.
5.Put the new ABS module in place and hand thread the four Torx bolts in place. Tighten these bolts with your socket set, then plug the electric wiring harness into your new ABS module.
6.Put your Volvo's air filter box back into position and then insert the screws that hold it in place. Tighten these screws with the screwdriver.
7.Replace the negative battery cable on your Volvo.