Car Problem Reports

Volkswagen Passat Water From Clogged Sun Roof Drains May Damage Control Modules

Volkswagen Passat Problem
58 Reports
Me Too

Model Years Affected: 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2014

Average Mileage: 100,706 mi (12,000 mi - 209,600 mi)


Clogged sunroof drains can allow water to enter the interior and accumulate under the carpet where various control modules are mounted. Over time, the accumulated moisture can damage the control modules.

  •  Rookie

    also had the inside of my passat flooded...found drivers side rear drain hose for sunroof kinked between some metal section in the fender opened that but still getting small amounts of water when it rains real hard.... replaced trans. control module under drivers side carpetand got the car to start and run but still need to find the comfort module and replace it so i can get my windows to work....if anyone can help me with that...i would appreciate any info anyone can give me...

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  • Visitor, , 40,000 mi

    Leaked to the passenger side module and car ran like crap. I got that fixed, sort of. The transmission still shifts rough. The driver's side module got wet about 6 mos. later and I lost interior lights, central locking sys., etc. which I have not fixed because to cost is prohibitive. The car is only worth 4k. I can not believe this car was designed by German engineers. My dog could have done better....

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  • Visitor, , 100,000 mi

    My module malfunctions. Drain under car battery clogged and flooded module located on the driver's side floor. One by one things have stopped, power sunroof, gas door latch, remote start, heated/power mirrors, vw key malfunctions etc. I think VW should recall and fix the problem. POOR DESIGN...WHAT WERE THEY THINKING !!!!! I found where I can get a new one online...cost about $300.00.

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  • Had this occur 5 yrs back. Entire computer ($5K repair bill)system "flooded". Shocked to learn as have car regularly cleaned; luckily covered under insurance policy. Furious that VW tried to blame me. Filed complaint on-line with NHTSA.

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  • Visitor, , 89,000 mi

    Water under carpet drivers side.

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  • Visitor, , 125,000 mi

    TCI transmission controll module destroyed by massive water leaks, Water leaking in the passenger side soaking the contents of the glove box collecting in the rear floor pan. It will be the sunroof drains clogged or a drain under the battery or both. The tci is $1400 farfagnugen you !!!!

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  • Visitor, , 165,000 mi

    haven't fixed it yet. at a loss to know what to do. car is dead in the water, so to speak. car was flooded front and rear seats, body control module is shorted. vacummed the water out and shoved the car in the garage. I don't have $$$ to fix. Shouldn't VW recall these cars and fix these drains and components?

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  • Visitor, , 119,000 mi

    The car will not start -after heavy rain - clogged drains in sunroof cause leakage to inside of car to control module,

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  • Visitor, , 12,000 mi

    Complained of rug being wet on driver side since got car- been in shop 2 weeks still not fixed. Think I got a lemon

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  • Visitor, , 38,000 mi

    water leak from the clogged sunroof drain into the passenger vizor and on the floor

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