Examples Of Water Leak Causing Components

Sliding Sunroof

Water leakage on the sliding sunroof due to blocked water drain valves are corrected using the Drain Snake:VAS6620  . The water drain hoses are designed for 2.0 liters/min. Larger quantity cannot be drained. Compressed or kinked water drain hoses are replaced. Refer to Sliding Sunroof .

Window Glass

Leaks on bonded window glass originate for example due to missing adhesive, broken or insufficient height of the adhesive bead or incorrect use of chemicals for example switching glass/paint primer and activator. Refer to the appropriate Service Information .

On bolted side windows the cause is insufficient sealing of the window seal to the body.

Doors

If water escapes under the door trim panel, check for the cause, for example on the window guide, outer window shaft strip, in connection with not completely installed grommets, foils, cable grommets, inner cover or incorrectly installed speaker. On old vehicles also the subframe or inner door foil.

Rear Lid

Water leak from the exterior is possible due to an insufficient bonding of the rear window and faulty sealing of the rear window, tail lamps or mounting elements.

From vehicle fluids only through a leaking hose from the rear window washer system.

Luggage Compartment

Leaking rear lid seal, missing fine-seam sealant, missing or damaged tail lamp seals.

Vehicle Interior, Front and Rear Footwell

Damage to the underbody, missing or insufficient fine-seam sealant, missing or incorrectly installed plugs or grommets for the cable grommets, water overflow through doors or sliding sunroof, insufficient bonding of the window glass, water overflow due to blocked water drain valve in the plenum chamber, faulty (welded through) weld points/weld seams.