Question about Volvo V70
No problem with brakes
This is a known tech issue with MANY models of Volvo. The problem lies in the electrical connections in and between modules and sensors. Even seasoned Volvo techs have a hard time with this problem. I would definitely take it to a dealership and get a troubleshoot & diagnosis done. As far as I know, there are tech bulletins on the issue, but no recalls. A dealership would have the most recent and effective repair solutions to perform after doing a diagnosis.
Thread Brake Failure Stop Safely
Posted on Dec 07, 2014
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Posted on Jan 02, 2017
With no leaks and a little braking action returning by pumping the pedal I would suggest looking into a master cylinder. Low brake fluid level in the master cylinder will cause the brake warning light to illuminate (possibly, also the ABS light).
If the truck has the 7.3L diesel, it will have a vacuum pump which supplies vacuum for all vacuum accessories. I believe if the vacuum level drops below 10 in. of Hg, the brake light will illuminate. If the vacuum pump fails you'll know it as the brake pedal will require quite a bit of effort to effect any braking effort.
Posted on Nov 24, 2008
WHAT HAPPENED IS WHEN YOU SHUT DOWN AND RESTARTED YOU (RESET THE ENGINE MANAGEMENT COMPUTER) AND THE SERVICE LIGHT SHOULD GO OUT AFTER 10 MINUTES OF DRIVING
Posted on May 12, 2009
I have had the same problem with my car for 3 months now. It is the ABS module that needs to be replaces. Ignore the stop ASAP light the brakes will still function as standard brakes. You just don't have ABS brake functionality or STC when those lights are on. Your car should still drive fine. Go on line and order a rebuilt ABS module for about $200 and the problem is solved. Hope that helps.
Posted on Jul 04, 2009
having the same problem with my 1999 s80 2.9 . replaced the abs module twice and still get the brake failure warning. when the ignition key is turned there is a clicking sound from the center console beneath the shifter, then the brake failure warning, and the car will not start. (also after the last abs module replacement the car sometimes gets stuck in park).
Posted on Feb 04, 2010
Try removing the battery for half an hour or so and then reconnecting (check you have all your radio codes etc before you do this).
Posted on Feb 07, 2010
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