* Are you talking about removing the roof rack? If so, this involves unscrewing the mounting brackets and carefully lifting off the crossbars. The exact process depends on the type of roof rack installed. Consult your owner's manual or the roof rack's instructions.
* Are you referring to accessing the interior from above? This would only be possible if you were to remove parts of the vehicle's roof, which is extremely difficult, dangerous, and not recommended unless you're a professional mechanic with specialized equipment.
* Is there some other specific aspect you're asking about? Provide more detail, perhaps a picture or a more precise description of what you intend to do.
