Water leaks — cowl and hood intake drains

Tags: #water-ingress

Hood air-intake water ingress through drainage ports: water leaks into the cabin through the hood intake ("жаба") due to blocked drainage holes between double-wall metal sections. A small secondary drainage opening gets clogged with dirt, causing overflow into the cabin and air filter. Fix: modify the drainage using a silicone hose extended into the wheel well to bypass the blocked ports, or clean the ports regularly if the car is outdoors in dusty areas ^{1234567891011121314151617181920}. ⚠️ Conflict: disagreement over whether the secondary small drainage port actually matters — KASPER emphasizes it clogs and causes overflow when the water level is high, but another user argues the main drainage outlet is so large that water always drains quickly unless 10+ kg of mud is blocking it. Resolution: both are correct — overflow through the small port occurs only in extreme conditions (simultaneous heavy rain plus an existing severe clog); normal operation relies on the main drainage.

Hood intake silicone-hose modification (detailed steps): complete modification to eliminate water entering through the hood intake: (1) cut and insert part of the white factory drain hose into a silicone hose; (2) install the silicone hose into the wheel-well opening, extending it deep; (3) connect the white factory hose end tightly into the silicone hose; (4) seal any technological stickers that came unstuck with adhesive to prevent water escaping there. This redirects drainage directly into the wheel well, bypassing the interior path ⁵⁷.

Cabin water ingress from blocked hood intake during heavy rain: one owner reported water running through the heater directly onto the cabin air filter during the first heavy downpour after purchase, caused by a blocked hood-intake ("жаба") drain. Partial solution: use recirculation mode when raining, or reduce fan speed to minimum — this prevents water from being drawn into the cabin air filter. The factory hood cover helps but isn't sufficient on its own ²¹²²²³.

Sunroof drain at the pillar — another check point: in the pillar corner there is a separate, almost invisible square sunroof drain opening — confirmed present on some cars; on others there is no visible hole, but the panel's slope drains water on its own ²⁴²⁵. On one car, water pooled with no slope and no visible holes — on that same car, the cowl panel's "false holes" (decorative indentations, not through-holes) turned out to be a separate problem (see below) ²⁶²⁷²⁸.

Standing water on the cowl panel (a molding defect, not a drain issue): the cowl panel under the windshield has oval indentation "pockets" that don't drain — they are false holes with no through-hole, so water pools in them. One owner's fix: drill through-holes in these pockets — water then drains properly. There's debate over whether these should be factory-through-holes; owners who applied the fix confirm it eliminates the standing water ^{26292730242528}.

Water in the driver-side footwell — clogged intake drains: water pooling in the driver-side footwell can originate from the front passenger area. Common causes: clogged drainage ducts or incorrectly-installed weatherstrips at the windshield-base air intake. Repair: professional diagnosis, unclogging the drains, and weatherproofing the air intake with gasket sealing (~2cm above the intake base per expert recommendation). Service cost at a Moscow shop (DolAuto): ~18,600 RUB including diagnosis (RU market, November 2025) ³¹³²³³.

See also: Water leaks — fender and cabin ingress; Water leaks — footwell diagnosis and A/C drain; Water leaks — sunroof and roof drains.

Media

Hood drainage area marked with red circles showing the main drainage outlet and ventilation duct

Hood drainage area annotated with green arrow marking main drainage, blue marking secondary small drainage that gets clogged, and red bands showing overflow path; shows double-wall construction where debris accumulates

Related pages

• Water leaks — sunroof and roof drains
• Water leaks — footwell diagnosis and A/C drain
• Water leaks — trunk and rear door
• Water leaks — door seals and body sealing
• Water leaks — fender and cabin ingress

Sources

This page is compiled from 33 community messages. Every fact carries a numbered reference to its original author and message.

Last updated: 2026-10-29