Dear Volvo screwdrivers! I drive a 850 T5R combo. A few days ago the still quite new battery (through the alarm system?) was unloaded after about three weeks so far that I had to bridge with a jump starter. Now in idle the light in the instrument cluster flickers, all lights synchronously. At the same time both bulbs of the front light failed today. I have now checked battery and Lima: Battery idle voltage 12.7 V Charging in idle 15.5 V Charging at approx. 2000 rpm 17-18 V (!) Charging mi t Load (light, seat heating, rear window heating) 13.2 V After this test, quiet hissing noises were heard from the battery (well because of the overvoltage) My diagnosis: Overvoltage from the Lima I suspect the Lima or the controller as an evildoer. How would you proceed? What should be tested or exchanged?