Driver's seat
 

Hi all
I am in need of some help please. I have an 06 Sonata LX. The drivers seat is torn in the middle and I would like to replace it.
The seats are leather and I was able to get a replacement for it. It is not an entire seat but rather just the leather that fits over the foam.
I have to remove the old leather and put on the new one.
Problem is I am not sure how to do this and was hoping someone could help.
Also I imagine that I need to disconnect the battery so I don't set off the airbag, is this correct?

Do I need to take out the entire seat or can this be done while still attached to the car. I tried to find information to no avail.

Thanks in advance.