This morning I had the heater on the windows with light ice. After that the Phaeton did not start, even the emergency start function did nothing. This evening then voltages measured. The left battery (comfort) was 11.5 V. Some control units reported undervoltage. The right starter battery was at 12.7 V. So certainly not empty. Both batteries were tested 2 months ago, one very good, the other good in the VW report. I deleted the errors and now charge the However, the ZAB shows that the battery voltage is too low, system shuts down. In the dashboard display appears: start the engine. I try that, but I don’t do anything. You only hear a cracking from the left side of the battery when you try to start it. I have a keyless go, I also tried the other key, about the ignition lock: unfortunately nothing so far. I can open the doors normally, all the devices seem to work. Only the engine does nothing. n a low voltage of the comfort battery also cause such problems? Or a defect at the starter switch? Then I can have it picked up. So this is the first time that the car lets me sit properly, after 1.7 years. At least at home.