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Old 8th December 2020, 01:04 PM
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steamship steamship is offline
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Join Date: Jun 2013
Location: Londonderry, Northern Ireland
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List of drains and water ingress points (please copy and add/expand/explain):

1. Orange drains from aircon condenser tray, one each side of the transmission tunnel behind interior trim (which needs care and knowledge to get out undamaged)
- Full instructions on how to do this can be found at the following link: http://www.audipages.com/Tech_Articl...tordrains.html
- Ensure you have a large enough container to capture the water when you remove these, and prior to refitting, soak them in hot water to make them more pliable. They look like this:



2. Scuttle drains under windscreen scuttle panel. Easily blocked by leaves, difficult to get at. IMHO it's not really the big nipples that are the problem, but higher up in the tray.
- hidden under the HVAC unit and best accessed using something like a piece of copper brake pipe to get it angled correctly to wiggle around, and it exits both sides of the transmission. A combination of hot water and kitchen drain cleaners used to clean them, and then flushed again with clean hot water. Location and image as follows:




3. Sunroof drains
- Four in total, one at each corner of sunroof frame. Plastic tubing is very pliable so extreme care when cleaning these out. Front ones exit at the base of the A-pillar (you can see them when you open the door), and the rear ones exit behind the back wheel. Illustration of layout as follows:



4. Boot cable grommets, especially on right side. MJ has a solution.
- Link to specific thread about these - http://forum.a8parts.co.uk/showthread.php?t=15456



5. Seals around rear light cluster in boot lid
6. Rear numberplate (not sure about this one, but I've seen people seal there)
7. Small drains under bonnet, either side close to the wing panels.
- About two inches long and exit at the back of the wheel arch. Location and image as follows:




8. Botang's Hole - Even though it's not a 'genuine' drain, it has caused lots of issues so should also be addressed. The following link shows very detailed photos of its location: http://forum.a8parts.co.uk/showpost....2&postcount=16
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__________________
2001 A8 D2 FL 3.7 Q - LPG Conversion, Engine: AKC, Gearbox:FBB, Colour:LY5X Aqua Blue pearl effect, Interior:WJ light beige/dark beige valcona leather with burr walnut inserts

My DIY jobs - Replaced alarm horn, Replaced Coolant Temp sensor, Updated RNS-D firmware, Installed Reversing Camera and Digital TV, Dashcam Installation, Retrofitted Rear Blinds, Auto-Dimming Rear View Mirror, Chrome Boot Struts

Sold! 2008 S8 D3 5.2 V10 - Engine: BSM, Gearbox:KLW, Colour:LY7F Suzuka Grey Pearl Effect, Interior:Black/Black with Silver/Black valcona leather with carbon atlas inserts, Bang & Olufsen, Heated windscreen, Soft-close doors, TV, DAB, AMI, Quad Zone, Auto Boot, Auto dim Mirrors, Keyless entry, PDC with rearview camera, AFS II Headlights

My DIY jobs - Fan Jet Windscreen Washers, Retrofitted Electric Side Blinds

Last edited by steamship; 21st December 2020 at 12:19 PM. Reason: Links to other threads where appropriate
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