W212 Wrong date and time on Audio 50 APS





My clock and Comand unit is bang on the money, and it should auto update every time we go to/from daylight saving time.
Disconnect battery for 15 minutes...
I have the same specs, e220cdi with audio 50 APS from 2011. The time is like 4 minutes ahead (instead of 10:00 it’s 10:04 for example) and the date is something similar, can’t remember exactly the date, but the year is 1966 as you mentioned)
i disconnected the battery on different occasions but that did not help reset the time correctly.
also the change from /to DST does not happen automatically, I need to change it manually, as opposed to your car @DFWdude which I believe is from a later year, or at least, different specs.
my brother has the same car but form 2012/13 and it has different display(mine is classic yellow/black one, his is red/black, not to mention he has Bluetooth streaming , mine does not) and he doesn’t have any issues with the time.
I took it to the dealership a long time ago and they couldn’t fix it because something something, the time is synced to some satellite and they can’t manually overwrite the time ( except for modifying in those 30 minutes increments)
I just wanted to share what I know and be in the loop in case there actually is a fix





