The anti-lock brake system (ABS) warning light and/or other dash warning lights may illuminate due to a failed ABS Control Module. Replacement of the failed module is generally required to correct this concern.Google+
Car Problem Reports
Volvo XC70 ABS Control Module May Fail
Volvo XC70 Problem
Average Mileage: 95,840 mi (65,000 mi - 175,000 mi)
Visitor, 2004 Volvo XC70, 75,000 mi
not the sensor; still trying to solve
Visitor, 2004 Volvo XC70, 137,858 mi
ABS light and brake warning light were on. Odometer did not work. I replaced ABS control module with an used one and fixed problem.
ABS warning light comes up.
The ABS brake light came on. After research, I learned it was better to have it rebuild, so I had it taken out & I sent it to a reputable place. It came back was reinstalled. After a week, the light came on again.
Had it taken out, sent it back. Put back in, light came on after 2 days. I just don't what to do from here. I read modulemaster is the best, but that don the work on a 2004 CX70 Volvo.
Visitor, 2004 Volvo XC70, 101,000 mi
the warning light stays on. ABS brakes. No cruise control. I am investigating places on the web that rebuild the modular. It doesn't look like it would be too hard to remove & replace. It would be sure be cheaper then the $1,100 a Volvo mechanic quoted me. My only problem is determining if the modular is a K20 or a K25, there was a difference in the quote. after reading some forums, it could be the SAS as well.
Visitor, 2005 Volvo XC70, 90,000 mi
Brake & ABS light is on very often.
Visitor, 2006 Volvo XC70, 65,000 mi
ABS light is on. Dealer suggests replacement at $1600.