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Hi Everyone - I bought my Cayenne S new in August 2012. Just before Christmas I found the passenger footwells (front and back) to be saturated. I immediately took the car to my Porsche Centre who advised this is a common problem due to blocked drains allowing rainwater to seep into the interior. Because the car is over two years old and out of warranty I will have to pay to have it dried out. I am incredulous. At no point was I advised of this potential problem, either verbally or in the handbook (there isn't a single mention of drains). Had I been aware I would have questioned the 'sloshing' noise that I'd heard for several months and therefore been able to have the car 'drained' under warranty. Porsche apparently are insistent this isn't a design fault - how can any car manufacturer claim that rainwater leaking into the cabin ISN'T a design fault ? So it seems I have to foot the bill but am considering taking legal advice as I believe that Porsche should, at the very least, make owners aware of this potential problem so we can keep an eye on the drains, especially if leaving the car parked outside. The dealer points out that the drains are always cleaned when serviced but this is a mute point given that the recommended service interval (certainly in the UK) is 2 years. So, does anyone else here have experience or knowledge of this particular issue ? Thanks ...
 

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I would like to tell that I have the same problem in Russia. I bought a PORSCHE CAYENNE TURBO in July 2011. The Vehicle was serviced exclusively by the official dealer. Timely and complete maintenance was ensured in full accordance with the service guide. .
However, in summer 2015 a blockage of drainage gutters under the hood of the Vehicle occurred (not by my fault). The existence of those drainage gutters was not mentioned in the technical description of the Vehicle. There was no access to them because they were deep under the hood and under few covers. The blockage of drainage gutters caused partial flooding of the interior of the Vehicle, as well as of electrical and other equipment under the front panel (including torpedo) and high humidity in the cabin, which led to significant damages to the parts and systems of the Vehicle:
1. Breakage of the cabin filters;
2. Rotting of the floor mat and flooring;
3. Breakage of the S/U stove motor;
4. Breakage of the relay of the pneumatic suspension;
5. Corrosion and subsequent malfunction of the brake pedal (periodically not returning to the starting position);
6. Corrosion and subsequent malfunction of the signal knob (periodically not returning to the starting position, the alarm is being triggered spontaneously and lasts for a long time);
7. Failure of the air conditioner;
8. Corrosion and vast deterioration in the quality of the upholstering;
9. Corrosion of metallic body of the Vehicle under upholstering.
The damage to the Vehicle as described above is irremovable and creates not only a bother but obvious hazard for life and health of the operator of the Vehicle. The damage occurred through no fault of mine but owing to abovementioned reasons.
I ordered an independent expert report and it showed the drainage system was designed incorrectly. However, it did not convince Porsche representatives in Russia, they were neither helpful nor diligent in performance of their obligations. I went into court with them and they kept saying that the drainage system failure was not their fault and that it was ME who should have cleaned the drainage correctly. When NOTHING was mentioned in the guide for Porsche on this subject and NOTHING was mentioned that this issue needed specific attention, HOW SHOULD I HAVE KNOWN ABOUT IT? And when I took my vehicle for service each year just as it was mentioned in the service book they would never clean up the drainage and make respective remarks in my service book, so the official dealers themselves were acting unprofessionally towards my problem, they did not do all that was needed to protect my vehicle from harm caused by the leakage. My expert said that the drainage holes had not been designed in a proper way - they were too small and made of incorrect material that would not ensure the safe and timely clean-up of the system.
Now I cannot use my expensive vehicle any more and it has been standing for years in my garage as I was afraid to use it for it is not safe for my health and for health and safety of others.
What would you suggest me to do?
 
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