Various Probelms Caused by Clogged Plenum Tray Drain on Volkswagen Passat

Problem Description and Possible Solution

Clogged drains can allow rainwater to accumulate in the plenum tray (at the base of the windshield). The water may leak into the vehicle's interior, brake booster, or electrical components, which can lead to major problems. Our technicians recommend keeping the tray clear of leaves, pine needles, and other debris.

Problem Data
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Average mileage: 113,993 (35,000–222,009)
14 model years affected: 1998, 1999, 2000, 2001, more2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2013
46 people reported this problem
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Viewing 1 - 20 of 22 comments
Water leaking into interior, front passenger side.
drivers side floor fills with gallons of water during rain especially behind drivers seat. I do not have a sun roof. It is a 2001 Passat wagon
Just bought a 2004 VW Passat Wagon, to my dismay I found the inside soaked after rain. The car started having problems when I shift. I got it to shift one more time to park position then it wouldn't shift at all. The mechanic scanned it, the code said transmission computer, he pulled it up the whole box that "protects" the TCM was full of water the tcm was full of water. I just sat there & cried this is ridiculous!! I bought this vehicle cause my Chevy Blazer was totaled in a collection, I really miss my Blazer I had none of these problems! Now I don't even know how or where the water came from & I don't have a lot if money to fix it. Any suggestions would be appreciated. Heartbroken in Brooklyn.
water is dripping in on drivers side enough to saturate the floor mat.
Everyone wanted me to repair the heating system because of a wet carpet. These forums really help. It was clogged leaves. This car is killing me! Someone buy it off me!
Large amounts of water on drivers side floor.

Cleaned out drain in driver door hinge, no longer seems to be a problem.
I bought my Passat Wagon used from Hilltop Motors in July 2010. I noticed occasional water on the passenger side but didn't know where it was coming from, it was intermittent and didn't seem serious. Since there were so many ongoing issues with the car I didn't get this addressed. Recently it became much worse and before I got it into the shop it flooded during heavy rains on the passenger side doing damage to my electrical or computer system. My car has been in the shop all week while they try to dry it out and see if they can repair it. Its not looking good.
Water enetering the interior- water on the floor, during the winter I have to scrape the interior as well as the exterior of ice/frost--
My dealer checked it out, $300.00 an found drains OK but indiated further diagnostic's would still be on my dime. A 2003 model and VW has lost the SIMPLE knowledge of how to keep the interior of the vehice dry when it rains! I have heard this is quite a common problem in numerous VW products during thew early 2000's
I guess its cheaper for them to ignore the problem rather than a recall, there's always anther sucker down the road. A so called class action suite tuned out to be awaste of time when up against a big corp. such as VW

A VW no more for me, or my friends
I had eater leaking into my vehicle, there was an 1-3 inch puddle behind my drivers seat.
water leaked into the passenger part of the front seat. this was due to the gaskets around the smog filter behind the glove box. I complained to the factory and they fixed it under warranty even though the warranty had expired. There is a trnasmission control module under the passenger seat. The water seeped into it causing the car to lock into second gear. estimated cost of repair was 1000 dollars. The factory fixed it
it for which I was thankful.
Same problem, only my mechanic didnt find it and water got into engine - completely ruined engine. 3800$ repair bill minimum.
I clean the plenum tray and surrounding area monthly with my leaf blower.
My car was serviced and the protective shield was removed and never replaced. The car has had electrical problems ever since then. I live in the pacific nw with rain being an issue for the unprotected car
Have recognized water pooling twice which prompted my consulting with the internet for an answer and came across repairpal.com. My boyfriend's a mechanic, so I will consult with him on the repair.
YES...I have the exact problem!!! thank you!!!
Water is leaking in the floor behind drivers seat. Doesn't look like it's coming from window or sunroof?
Fortunately in regard to this problem it doesn't rain much where I live but when it does there is looking of water in the back or front floor area depending on which direction I'm parked downhill. I haven't resolved it yet, but now have some ideas about how to avoid it; clean out the area at the base of my windshield where leaves and twigs collect.
Leaves inside panel under Wipe Blades causes clogged panel. This led to water rusting and corroding the electrical module that control horn, and wiper blades, etc. Also carpet and floor board ruined. All has to be cleaned and redone. Mechanic told us to file insurance claim. Anyone have luck with insurance covering this extensive damage?
Had water pool in the driver side corner and leak into the floor, shorted out the starter relay and ignition.
dash lights up immoblie activatived