Hello together, a friend recently added a used V70 2.0D from 2009 with approx. 213.000km. The car has an interesting problem: In case of running engine (in stand or while driving) suddenly all lamps light up in the speedometer, the central locking is controlled and the lamps of the buttons in the center console go on for a fraction of a second. The speed drops and the “DSTC on” message arrives, similar to after the engine start. It seems as if the onboard electronics for a fraction of a second lose voltage. I have the impression this is related to the current decrease… (e.g. when the windscreen wiper runs). See attached video. Reading out the car brings three errors: POT (Heck valve module) – U300316 battery voltage. General electrical errors. Current circuit voltage under threshold DDM (driver door module) – B110A11 driver’s side rear door central locking motor. General electrical errors. Short circuit to mass CEM (central electronic module) – B10EA14 positive temperature response.