I have a new 2018 E63 AMGs with what appears to be some ambient lighting bugs. The ambient lighting does not stay on after setting it, sometimes it stays set for 1 or 2 start restart cycles but eventually it goes away, then back into set it up again. I have been back to the dealer on this and they also had the same issue with my car, the dealer specialist, who has been great on everything else and was great on helping me with this.

 

Take a look at earlier thread. (below)

A software update should be available this month...as a temp fix, try ticking the brightness zones option.

https://mbworld.org/forums/e-class-w...-lighting.html