You don't? Power outlets that go off with the key have been standard in VWs since at least 2005 (Mk5). The average American driver is an absent-minded idiot who pays only minimal attention to little things like driving and car care. Too many people left their phone chargers, or baby bottle warmers, or whatever plugged into their power outlet overnight and they then complained to VW about their dead batteries. In order to prevent owners from waking up to dead batteries, they try to not allow unexpected power drains with the key turned off. If you are smart enough to remember to unplug your charger, this behavior is easily changed by rearranging a few wires in your fuse box. It is basic electricity, not rocket science.
Have Fun!
Don
. Well said.
