unscrew the philips screws on the ends of the rails, they hold on plastic covers that you can pull off (unsnap with force). Once pulling covers, it will reveal bolts that actualy hold on the roof rails. Un bolt those - and the rails should come off. Replace with covers. Don't worry about breaking the covers of the bolts when first unscrewing - they are very sturdy - and worse comes to worse, you can just get more at the dealer.