Q: 2012 Passat with a small water leak on the floor of the passenger side (back seat).

asked by on

Hello,

I have a water leak on the floor board of the back seat, passenger side. What's the best way for me to start determining where the leak is coming from? I do have a sunroof, although not sure if this could be causing it. There is no water leaking from the roof or doors, that I can see. I recently went for a car wash and it included an under body wash and it was definitely wet after. I live in Seattle so hard to say if it is the rain or not. :) Any suggestions are greatly appreciated!

Thank you!

-Alicia

My car has 87000 miles.
My car has an automatic transmission.

Hello, thank you for writing in. The best way to figure out where the leak is coming from is to replicate it. Due to the wet conditions in your area, the water may be coming in through a window seal or door seal. It can also get in through the bottom of the vehicle if water is being splashed from the bottom. Wait for a dry day and grab the hose to do some testing. Spray water from the bottom first, as it will decrease the chance of confusing your test results. If you can not get water to leak into the cab from the bottom, you should spray it from the top. There are drains that run along the roof of the car which are designed to direct water to flow away from the windows and sunroof. These clog easily with dirt and debris. If you find these are clogged, you can use compressed air and water to help clean them out. Only further testing will tell. For more help finding the cause of the leak, contact our service department to schedule an appointment.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. 2012 Passat with a small water leak on the floor of the passenger side (back seat).

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Sometimes when I have foot on break it releases puff of air-I hear it&feel it get hard.back to normal once driving. Vw 2005 Beetle

The problem sounds like your brake booster is leaking vacuum and will need to be replaced. The brake booster helps you apply the brake and if it is leaking or the check valve that supplies vacuum to it is leaking...

Q: How much should it cost for the dealer to clean the throttle body, and MAP sensor, and replace the PCV valve cover on my jetta?

Hi There, Unfortunately, there is not a uniform pricing system when it comes to what various dealers charge. Many things come into play (availability of parts, wholesale pricing, access to labor, overhead, etc.) for various repair shops when it comes...

Q: Oil pan leaking and smoking

Oil leaks are common especially as vehicles get older. The smoke you see/smell is from the oil falling on hot metal from the engine running. As the oil burns off you see the smoke and get the odor. Once we...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...