X5 locking issues

[zoominE53]

Hey guys new to the forum here. I just picked up a 2001 e53 and lovin it! unfortunately the dealer only had one key for this ride and the remote is dying faster than normal. I would like to replace the battery but dont want to risk of damaging the immobolizer so I went and ordered one through the stealership before i crack open the one i have. I arm/lock and disarm/unlock by turning the key in the driverside keyhole. Now the issue im having is that when I arm, it only locks the driverside and does not lock all the other doors and it doesnt make that "beeping" sound anymore...Is there a central lock reset or toggle that can be done? thanks!