Hello Guys... im new to the family.. its my first post here & my first bmw to have .
I read a lot of threads in the forum about this issue happened to several of you guys, some said its a battery some said it an alternator, since i changed both recently i decided to investigate it .

The Problem : All of sudden you get the dash board light dimmed .

Explaination : I found that my model E46 330i 2003 have a photo cell , which is it " Solar Sensor "
you can find it next to the light buttom , when you cover it with your hand the dash board
brigthness gonna decreased . its there to make our drive more comfortable . so don't think
its a problem or defect .

hope its good to be my first post . any comments with happily accepted
sincerly yours
Xeriox