The 7's screen has a daylight sensor and dims/brightens the backlight depending on time of day. Why do we on the E60 have to adjust the brightness manually? :huh: I find it hard to believe that the system exists yet its not included in the spec of a ?39,200 car :angry: I know you can do it with the panel rheostat but then the dash lights go dim. :blink:

It seems there is a sensor located under the I-Drive screen.

I know for a fact that in my E46 it didn''t work until I had a later software upgrade.
The screen would dimm itself with low sunlight or was brighter with the sun shining in the screen.

Mine has always auto dim at night. But not enough for my taste so I turn it down a few more clicks.

To learn about the brightness of the iDrive screen (CID), read the end of my post here:
http://forums.e60.net/index.php?showtopic=...ndpost&p=113205