That’s an odd one! Sounds like it could be something to do with the auto hold or electronic parking brake system. Some cars have a hill-hold function that might be keeping certain lights on when parked on an incline.
• Check if Auto Hold is active – If it is, try turning it off before parking and see if that makes a difference.
• Manually engage the parking brake – Instead of relying on the auto brake, try pulling the electronic handbrake manually and see if the lights still stay on.
If it only happens on a hill, it could be a sensor issue. If the dealership isn’t sure, maybe try a different service center.