One problem related to battery has been reported for the 2004 Volvo S60. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Volvo S60 based on all problems reported for the 2004 S60.
I have a 2004 Volvo S60 with 57,700 miles. All work on the vehicle has been done by Volvo. Recently, when the ac is on, the fan speed has stopped responding to adjustments. Nothing happens when I try to adjust the speed and then, on its own, the speed will change a few minutes later. When I turn the car off, the fan continues to run for at least five minutes. I'm afraid that one day it won't turn off and will drain the battery. The Volvo rep and an independent mechanic feel that the repair may be costly and just to do the diagnostic is expensive, so I haven't had it done while I decide whether to just trade in the vehicle.