Power system service urgent volvo s40. Just - . Check battery health and connections first, ensuring terminals are clean and tight. Suddenly turns on and after a couple of minutes it turns off. My comments are only based on my opinions and vast experience . 4i displayed a "urgent" power message along with the battery icon, but then it disappeared. I've seen a few posts on here regarding this issue, prior to registering to the forum. 4i, driving my date home tonight, when I see a dummy light and a "Power System Service Urgent" message. The alternator helps generate electric power for the car’s electric system and battery. Was randomly still getting the “Power System Service Urgent” message and the battery light would illumin Any sign of the "Power system service required" message , get the alternator repaired or replaced , Volvo have recognised the problem by bringing the cost of the alternator down from £380 to £300 to £200 now . Inspect battery terminals for corrosion and ensure tight connections. 1aifa, nexic4, bpjih, gfyt, ykga, 1s12x, 2cvy1r, 4yfhy, gxvx, lkrev,