Regular brakes and ebrake are seperate functions. The ebrake is a cable operated drum brake that resides in the drum in the center of the rotor. The pads are about $70, are available at local parts stores and are not overly difficult to do. No special tools are required...only a lot of patience in getting everything lined up and the spring/retainer in place.
Of course it may just need adjusted. On the lower back side there is a small rubber cover. Remove it and use a screwdriver to turn the adjuster barrel until the pads rub lightly.