I noticed that when the car has been unlocked from a previous exit, and I come back to the car to get something with or without the key, the ambient light or interior lights do not come on. It would be completely dark. I checked to see if there's a setting, but I could not find any. Is there a way to have the interior lights come on when you open any door particularly when the car has already been unlocked several hours before?

 

Does the puddle light and projectors still come on?

 

Perhaps try pressing the unlock button on the key before entering the garage if you don't want to bring the key with you to the garage next time? That might turn the lights back on as it essentially wakes the vehicle. If you can bring the key, bring it and lock it then unlock it again. Otherwise bring your phone and lock then unlock it using the app.

 

Mine had a switch, on the overhead panel, on the far right, which would turn off the interior lights and it would then light up red. If yours is red, press that switch and your interior lights will, then, come on when the doors are opened.

 

Only door sill (AMG) lights come on, but the interior foot and ambient light stripes do not come on. I guess after it goes to "sleep mode" from an prolonged unlocked status, it will not detect the key in hand compared to a locked status. I'm usually opening the back doors to get something or put something in. I'm old school in that most of the cars I've owned would also have the interior lights come on regardless unless it was set to not turn on.