Hi Royk. You will have to remove all the plastic bits to get access to the hinge. First remove the side plastic panel, this is the panel between the rear wheel and the rear corner panel, get some new clips as they often break when pulling the panel off, this will give you access to the fixings of the rear corner panel, then remove the oblong block on the rear corner panel that is just below the rear light.
You may have to remove the plastic rear step cover as well.
Mike