I'd make sure your brake system recalls have been addressed. See below:
Volvo S60 Recalls and TSBs
Brakes: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:MASTER CYLINDER
Campaign Number: 07E023000
Number of Vehicles Affected: 13,128
Model Years Affected: 2001, 2002, 2003, 2004, 2005
Date Owner Notified: 04/2007
Defect Summary: CERTAIN CARDONE MASTER CYLINDERS WITH DATE CODES LOWER THAN DCA7078 SOLD AS REPLACEMENT EQUIPMENT FOR USE ON THE VEHICLES LISTED ABOVE. THE SEAL ON MASTER CYLINDER CAN FAIL AND LEAK BRAKE FLUID.
Consequence Summary: LOSS OF BRAKE FLUID CAN RESULT IN POOR BRAKING PERFORMANCE, POSSIBLY RESULTING IN A VEHICLE CRASH.
Corrective Summary: CARDONE WILL NOTIFY OWNERS AND OFFER TO REPURCHASE ANY DEFECTIVE MASTER CYLINDERS. THE RECALL BEGAN DURING APRIL 2007. OWNERS CAN CONTACT CARDONE AT 1-800-777-4780.
Recall Notes: THIS RECALL ONLY PERTAINS TO AFTERMARKET CARDONE MASTER CYLINDERS AND HAS NO RELATION TO ANY ORIGINAL EQUIPMENT INSTALLED ON THE VEHICLES LISTED ABOVE.CUSTOMERS MAY CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S VEHICLE SAFETY HOTLINE AT 1-888-327-4236 (TTY: 1-800-424-9153); OR GO TO HTTP://WWW.SAFERCAR.GOV.
Volvo S60 Recalls and TSBs
Brakes: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:MASTER CYLINDER
Campaign Number: 07E023000
Number of Vehicles Affected: 13,128
Model Years Affected: 2001, 2002, 2003, 2004, 2005
Date Owner Notified: 04/2007
Defect Summary: CERTAIN CARDONE MASTER CYLINDERS WITH DATE CODES LOWER THAN DCA7078 SOLD AS REPLACEMENT EQUIPMENT FOR USE ON THE VEHICLES LISTED ABOVE. THE SEAL ON MASTER CYLINDER CAN FAIL AND LEAK BRAKE FLUID.
Consequence Summary: LOSS OF BRAKE FLUID CAN RESULT IN POOR BRAKING PERFORMANCE, POSSIBLY RESULTING IN A VEHICLE CRASH.
Corrective Summary: CARDONE WILL NOTIFY OWNERS AND OFFER TO REPURCHASE ANY DEFECTIVE MASTER CYLINDERS. THE RECALL BEGAN DURING APRIL 2007. OWNERS CAN CONTACT CARDONE AT 1-800-777-4780.
Recall Notes: THIS RECALL ONLY PERTAINS TO AFTERMARKET CARDONE MASTER CYLINDERS AND HAS NO RELATION TO ANY ORIGINAL EQUIPMENT INSTALLED ON THE VEHICLES LISTED ABOVE.CUSTOMERS MAY CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S VEHICLE SAFETY HOTLINE AT 1-888-327-4236 (TTY: 1-800-424-9153); OR GO TO HTTP://WWW.SAFERCAR.GOV.