Front drain hoses
The front drain hoses -1- go through the A-pillars to the drain. Remove the plenum box cover. Clean the bottom drain valve -3- and clean the drain hose -1-, e.g. with a rope.
Rear drain hoses
The rear drain hoses -2- run along the D-pillars and terminate at the outer rear floor panels. Remove the rear bumper. Clean the bottom drain valve -6- and clean the drain hose -2-, e.g. with a rope.