@Zixuan Huang - Charlie it is the full option, However i read in the owners manual it is an electronic rear diff lock system which activates automatically when a tire does not have traction. I do not see a button or anything near the 4wd drive system.
@Wrangeld Thank you for the amazing drive. Glad we could finally finish our trip.
@Christopher Assal Thank you, Learning day by day how to handle the car in the Dunes. Hope to see you out there again.
Thank you everyone else.
@Zixuan Huang - Charlie - Will try to take a picture of the suspensions later, I think it would be easier if you could visit the MG showroom in DXB to view the car. I am not sure if it has rear Diff lock. How to check?