Cayenne 2004 blocked sunroof drain tube

[Peter Carr]

The drivers side front drain tube does not drain but the left side does.
Resulitng in water overflowing onto the headliner running down the inside the A-Pillar upper and lower onto the carpet.
I have tried unblocking the tube with a small stainless coil and can get 110cm down the tube but no further.
On the left free draining tube I can still only get the coil down to 110cm also so I imagine there is some connection or bend at that point.

Does anyone know what happens beyond that point wher the blockage might be?
I am thinking that the tube may be bent or trapped somewhere.

I have in the past removed the wheel arch liners to check the the bulkhead drain plugs have been removed allowing them to drain freely.
I didn't notice another drain tube that might be the sunrroof tube exit.

Someone did suggest to me that the sunroof drain tube ends inside the bulkhead and isn't visible?
 

Edited August 26, 2018 by Peter Carr

[Mr.Flip]

I tried to use a thin metal coil to unplug mine as well to no avail, what ended up helping me was getting my air compressor and with a small rubber hose attached to the end of it, put it into the drain tube a few inches, and shoot it a couple of times. It blew out alot of dirt and debris which was the reason why mine was clogged.


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[JFP in PA]

9 minutes ago, Peter Carr said:

The drivers side front drain tube does not drain but the left side does.
Resulitng in water overflowing onto the headliner running down the inside the A-Pillar upper and lower onto the carpet.
I have tried unblocking the tube with a small stainless coil and can get 110cm down the tube but no further.
On the left free draining tube I can still only get the coil down to 110cm also so I imagine there is some connection or bend at that point.

Does anyone know what happens beyond that point wher the blockage might be?
I am thinking that the tube may be bent or trapped somewhere.

I have in the past removed the wheel arch liners to check the the bulkhead drain plugs have been removed allowing them to drain freely.
I didn't notice another drain tube that might be the sunrroof tube exit.

Someone did suggest to me that the sunroof drain tube ends inside the bulkhead and isn't visible?
 

 

I would highly recommend against poking anything down one of these drains, as it is far to easy to either hole the tubing or break it loose at a connection point.  Use compressed air.

[Peter Carr]

Many thanks I will try that.

[996Carrera]

I pretty sure the dealer use compressed air the last time I had mine cleaned


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