search the web. there is someone in California who does nothing but fix ABS controllers. His website explains how to remove it and he sends an email explaining how to re-install it. best $125 I ever spent on my car (local mechanic quoted $500).
It is probably the ABS controller under the hood, replacing it with a rebuilt one should clear the light and give you full function brakes again.
Fix the problem and the light will go out. Normally on Volvo 850's the ABS sensor goes out (actually a wire comes loose inside the unit) this sensor is under the hood on the ABS unit.
The abs light stays illuminated when the onboard computer diagnioses a problem with the anti lock braking system. This means yours brakes still work however the abs function may not operate when the wheels are locked causing a dramatic increase in stopping distance or loss of precise steering in an emergency situation. This problem usually is related to a fualty control computer and is very costly to be replaced through a Volvo dealer. There are people out there that will repair these modules quite cheaply as they are a vary common repair on the 850 model (use eBay or a Volvo forum to find such repairer). The best thing to do is to pay a Volvo dealer to diagnose the fault first as it may be a faulty or dirty wheel sensor causing the problem (cheap repair), otherwise the only thing left is the ABS pump module that could be faulty (expensive repair). Once diagnosed correctly you can then make the right decision as to repair/replace or use second hand parts to repair the cheapest possible way.
usually at the outer ends of the rear axle behind the backing plate
You can get ABS codes for your Volvo at your local Volvo dealership. You can also find the ABS codes in most Volvo service manuals.
The light indicates either a fault in the ABS controller, a blown fuse/relay, or the computer may have malfunction. If the ABS light is "ON" the your ABS is disabled and will not be used, see your dealer/repair shop now.
http://home.earthlink.net/~vicrocha This guy will fix your ABS unit for a little over $100. I sent him my unit and he promptly fixed it. Highly recommend it. Get it scanned first, mine were on because they were disable to conserve power when my battery was low
Have the abs system checked for codes and repair the cause.Have the abs system checked for codes and repair the cause.
You have to repair the malfunction that caused the code stored in the abs computer.You have to repair the malfunction that caused the code stored in the abs computer.
The ignition switch has to be on for the ABS to operate.
Replace the ABS module - from what I read it will cost about 900 bucks
i have volvo v70 2001 she has abs lights come one for the last six weeks now my car wont start at all can the abs cause some think like that. thanks