Have you looked into having the dealership check the headlamp switch? It’s the most common cause after all the owner caused scenarios that keep the lights on longer than programmed per the Settings timeout (the one you set).I had the same problem and used to apply the same solution explained here about locking-unlocking-locking etc. I also don't believe battery saving is working well in this case. But recently I noticed that if I lock the doors after the lights delay (set to 10s in my case), the "glitch" doesn't happen. Now I only close the door after 10 seconds, enough time to organize my objects before getting out of the car. By doing it this way, the problem has not happened again in the last 15 days. Obviously we shouldn't have to change habits because of a car, especially when it's a car function that doesn't do what it's supposed to, but this procedure I described has worked very well for me and I think it could help someone else. Just give it a try.
Headlamp switch was an issue for some earlier model years.
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