One problem related to software has been reported for the 2003 Volvo S60. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Volvo S60 based on all problems reported for the 2003 S60.
The car stalled repeatedly while the engine was idling. All power was lost making the car very difficult to steer and brake. I nearly got into several accidents the engine stalled while: 1) stopped at a red light 2) while shifting gears on the highway 3) while shifting gears in heavy traffic I took the car to the dealership 4 times before the problem correctly fixed. The following items were replaced but did not fix the problem: 1) fuel pump 2) map sensor (replaced 2 times) neither of these fixes worked. The problem was corrected after modifying the software on the computer board.