I'm having trouble locking my driver side door on my 1999 Discover 2 . The keyless remote and dashboard door control works for every door except for the driver door. The only way i can lock the driver side door is using the key. Is this something I can fix myself and how>

 

You most likely need a new latch assembly. Not an easy task as you must remove the upper window frame assembly to access it. If you are very mechanically inclined I can help, otherwise A Dealer or indy shop that specializes in LR's is a far better bet.