Ok the remote is working with other alpine headunits- SO its NOT the remote or the battery , i disabled the REAR entertainment of the W205 as is said in the manual, and the W205 still will not work with the remote!
dude, you gotta change the rear function to front.
It's either in the setup menu, other setup menu
or the source selection screen but it's at the bottom
left of the screen. You'll have two boxes labeled front
and rear, touch front so it's highlighted and you should