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  #1  
Old 23rd June 2011, 10:35 PM
A8 Owner A8 Owner is offline
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Default Fan wont go off

In the centre of the scuttle under windscreen, theres a black box. Inside there a fan is on all the time. So flat battery all the time. Steve looked at fuses Block yellow fuse numbers 4,5,7,8,10 pulled each out to stop it. None of them did tho. Any ideas?
I have had the water problem in the pass side, in the sense it keeps getting blocked at the orange plug. At the moment the orange bit isnt connected up, as i have a hose pipe connected to the downpipe to catch any rubbish.in a bowl.
If i put finger over end of pipe i can feel the air blowing from the fan, if that helps work out what the problem is.
Now to top it of cant let battery run flat as it sets alarm off and wont turn off
So will havto leave this fan running over night while charger is plugged in, Only way to stop alarm going off.
NOT MY DAY
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  #2  
Old 24th June 2011, 05:55 AM
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The only way to make the fan run with the ignition off is the press the Rest button on the AC control panel. Is that button stuck in?
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Currently,
2000 S8, Merlin Purple, Leather Pack 1, Winter Pack 1, SPAX adjustable suspension, AP Racing 6 pot front caliper, 385mm fully floating disks, EBC Yellow Stuff Pads, Black Diamond grooved rear disks and predetor pads, D2 Doctors Brake Block.
1997 4.2 A8SQ - the Projekt. 12 years and ongoing!
1997 4.2 A8SQ - Ming Blue. Restoration sat waiting; saved from the Scrapyard
2003 C5 Allroad 4.2Q - Cobolt Blue. Towing car. Laid up awaiting manual conversion.
2005 C5 Allroad 2.5TDi FE - Grey - Workhorse.
2015 Q3QS SLine - Daytona Grey. Lots of extras! Long Haired Admirals cutter.

Previously
2003 C5 A6 1.9TDI FWD - Loaner from D2 Doctor Lifex
1997 S8 - Ming Blue. Loaned out and written off. I loved that car. My first engine swap after cambelt failure.
1996 4.2 A8SQ - Ming Blue. 178k on a cambelt! Trader's 8. Delivered to A8Parts at Lifex.
2003 2.8 A8SQ - powder blueish. Fill in for a while. Sold on.
1998 1.8T A4 Avant FWD. Ming Blue (there's a theme here), PEX for the 97 S8.
And a list of non VAG going back 40 years before I saw the light.
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  #3  
Old 24th June 2011, 06:14 AM
graynada graynada is offline
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Do you have a solar roof? From memory there is a relay, in the passenger footwell, that switches supply from battery to solar, I don't know whats in its place without solar. If you pull this it might cut battery power to the fan, sorry I can't remember which relay it is but the diagram on the cover should tell you.
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  #4  
Old 24th June 2011, 06:40 AM
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Fan takes lotzzz of power, thats why it flattens battery so quickly.

Hence, it isnt fused using any of the tiny normal fuses in the drivers footwell, instead it is fused using a huge 40 or was it 50? amp fuse in the electrics box in the passenger footwell under the wooden cover, you know the one.

Anyway, towards the top of this is a few fuses - Pull em
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  #5  
Old 24th June 2011, 08:25 AM
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Thanks will have a look in a min as Steve is down Unit.
Warning for all tho,
Make sure your boot key goes in and turns. If you have a flat flat battery you cant open boot to charge it.
As A8 parts says only other way in is to smash the rear boot light where the lock is. £20 to replace.
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  #6  
Old 24th June 2011, 08:36 AM
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Quote:
Originally Posted by Conan_the_Librarian View Post
The only way to make the fan run with the ignition off is the press the Rest button on the AC control panel. Is that button stuck in?
Thats just what Steve thought. Isnt tho, as when u press that button, the fan noise comes from pass side scuttle, not centre.
The fan you can hear ide say is on very slow.

Steve asked, does anyone have a exploded view, of how to take this area apart. As he knows nothing about this car, or his way around this car.

We take it, a build up of rain water, stuck in scuttle has caused this over time, As tueday we had water coming out the back vents.
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Last edited by A8 Owner; 24th June 2011 at 08:38 AM.
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  #7  
Old 24th June 2011, 08:58 AM
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Any good?

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Conan (the Librarian)

Watch it if you dare

Currently,
2000 S8, Merlin Purple, Leather Pack 1, Winter Pack 1, SPAX adjustable suspension, AP Racing 6 pot front caliper, 385mm fully floating disks, EBC Yellow Stuff Pads, Black Diamond grooved rear disks and predetor pads, D2 Doctors Brake Block.
1997 4.2 A8SQ - the Projekt. 12 years and ongoing!
1997 4.2 A8SQ - Ming Blue. Restoration sat waiting; saved from the Scrapyard
2003 C5 Allroad 4.2Q - Cobolt Blue. Towing car. Laid up awaiting manual conversion.
2005 C5 Allroad 2.5TDi FE - Grey - Workhorse.
2015 Q3QS SLine - Daytona Grey. Lots of extras! Long Haired Admirals cutter.

Previously
2003 C5 A6 1.9TDI FWD - Loaner from D2 Doctor Lifex
1997 S8 - Ming Blue. Loaned out and written off. I loved that car. My first engine swap after cambelt failure.
1996 4.2 A8SQ - Ming Blue. 178k on a cambelt! Trader's 8. Delivered to A8Parts at Lifex.
2003 2.8 A8SQ - powder blueish. Fill in for a while. Sold on.
1998 1.8T A4 Avant FWD. Ming Blue (there's a theme here), PEX for the 97 S8.
And a list of non VAG going back 40 years before I saw the light.
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  #8  
Old 24th June 2011, 09:09 AM
A8 Owner A8 Owner is offline
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Right looked where you said Ian, Pulled the 40a fuse on left just under the relay that has 204 on it. Fan now stopped
Took pics, Can someone now tell me what this fuse does and where it goes.
or possible causes of fan been on. Not taking for granted that the relay above it is connected to same thing.
Rang Steve he said without looking, if relay above is connected to the fuse we should first change this. Anything else it could be as i want ro ring A8 parts to get things sent.

Thanks for the Help so far
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Last edited by A8 Owner; 24th June 2011 at 09:17 AM.
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  #9  
Old 24th June 2011, 09:15 AM
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Thanks Mike think thats what he wants. Can i be a pain and ask if u can copy and paste what the number key is.
i.e what the numbers are.
As for me the only thing electrical i can see other than fan is number 16
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  #10  
Old 24th June 2011, 02:44 PM
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The legend is not so easy Mel, but you can go to the website and if you register for free you can see them side by side.

www.Vagcat.com
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Conan (the Librarian)

Watch it if you dare

Currently,
2000 S8, Merlin Purple, Leather Pack 1, Winter Pack 1, SPAX adjustable suspension, AP Racing 6 pot front caliper, 385mm fully floating disks, EBC Yellow Stuff Pads, Black Diamond grooved rear disks and predetor pads, D2 Doctors Brake Block.
1997 4.2 A8SQ - the Projekt. 12 years and ongoing!
1997 4.2 A8SQ - Ming Blue. Restoration sat waiting; saved from the Scrapyard
2003 C5 Allroad 4.2Q - Cobolt Blue. Towing car. Laid up awaiting manual conversion.
2005 C5 Allroad 2.5TDi FE - Grey - Workhorse.
2015 Q3QS SLine - Daytona Grey. Lots of extras! Long Haired Admirals cutter.

Previously
2003 C5 A6 1.9TDI FWD - Loaner from D2 Doctor Lifex
1997 S8 - Ming Blue. Loaned out and written off. I loved that car. My first engine swap after cambelt failure.
1996 4.2 A8SQ - Ming Blue. 178k on a cambelt! Trader's 8. Delivered to A8Parts at Lifex.
2003 2.8 A8SQ - powder blueish. Fill in for a while. Sold on.
1998 1.8T A4 Avant FWD. Ming Blue (there's a theme here), PEX for the 97 S8.
And a list of non VAG going back 40 years before I saw the light.
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