Victor did my abs control unit and saved me a lot of $$ (three years ago-and still running). He does indicate that you may have your unit tested before sending it to him to confirm abs failure or have him test it. If he cannot fix it (a rare event) he will send it back to you and you may replace it. This is a common volvo fault and the vast majority of units can be fixed by him which is better than paying $600 for a new replacement unit.

Dan