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D2 - Body and Exterior Bumpers, bonnets, glass, trims - Everything outside

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  #1  
Old 23rd March 2019, 08:21 PM
DailyMike DailyMike is offline
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Default Weird D2 sunroof issue

My 2002 A8 sunroof opens only slightly, then immediately reverses the action but fails to close correctly. I have replaced the switch, but the fault remains.
I can mechanically fully open and close the sunroof using an Allen key.
Are there limits switches involved?
Any suggestions please?
Many thanks.
DailyMike.
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Current modes of transport:
2004 A8 4.0DTI Quattro
19"wheels; Silver; 109,000 miles; Been off the road for several years. Lotsa work to be done
[BSold with regret:]2002 A8 4.2 (40v) Quattro Sport, 18" QS wheels; Prins LPG[/b], Silver; Black leather; newly-refurbished wheels in Anthracite...pics to follow soon!
2000 P38 Range Rover Vogue 4.6 V8 LPG, Epsom Green, fully-rebuilt engine (Top-hat liners, new camshaft for better mid-range torque); New S/S sports exhaust...SOUNDS BRILLIANT!
2014 Mondraker TrakkerR; 29-er, 30-speed gear train; rise'n'fall saddle; Mountain bike...NOT a cart-horse!
"JONDOR" a 116' long, 17"6" beam Humber Barge, Built 1950, ex oil tanker, fully refurbished Gardner 6LXC engine for propulsion (one day); requires new marine gearbox; 2-cylinder Petter Diesel engine & 3-cylinder diesel auxilliary engines with 12/24v and 230/415v gensets
"JONDOR" is a slow-burn project, being converted to provide suitable accommodation for wheelchair users and their carer/family for short respite breaks. Currently moored on River Humber at Old Beverley Shipyard
SOLD***2006 LWB Ford Transit 2.4 Diesel, Luton Van; Tail-lift; leaking translucent roof SOLD***

Previous vehicles:
Far too many to list individually, but includes 2005 A8 D3 3.0TDI Quattro Sport; 2007 A6 3.0TDI Avant; 2005 A4 2.0 Avant; 2007 A3 2.0TDI; 7-off Citroens, Many Fords, Austin 1100 (my first car), Lotus 7, Rover SD1 3500; SAAB 9000i, SAAB 9000 turbo; BMW 530; another P38 Range Rover (the crap one with BMW 2500 diesel engine...wouldn't tow the skin off a rice-pudding! )
Daren't even mention the traumatic Morris Marina and Ital's....even an Austin Princess. Brain is now hurting somewhat, so giving up for now...
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  #2  
Old 23rd March 2019, 10:36 PM
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27litres 27litres is offline
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The sunroof has a pressure relief system like the windows do, for injury mitigation.

I would suggest lubricating the mechanism using teflon or silicone spray (so as not to damage the plastics, or leave a sticky surface).

Mine had similar issues this summer and was quite dusty. I cleaned as best I could with a rag and a toothbrush and lubricated, which fixed the issue.
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Cheers

Marty


____________________
Current:
2001 Audi S8 - Brilliant Black with Black interior, C5 RS6 rims (whenever I actually put them on...), Solar Sunroof, Tinted side and rear glass, RNS-D, Grom, Bose, clunky old phone in arm rest!
2002 Audi S8 - Project
Replacement head coming arrived thanks to MJ
Silver with Black interior. All features as the '01, with the 'S' mode auto shifter. Dodgey rear tint (need to find a way to get rid of that).
Family:
2009 Volvo XC90 V8 R Design
- has a louder more obnoxious exhaust than the S8, sounds great! Love this thing - Q7 was double the price, and certainly not double the car!

Sold:
1997 Audi A4
- Hamilton's Club Sport, Achat Grey (will miss the old girl)
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  #3  
Old 24th March 2019, 09:08 AM
DailyMike DailyMike is offline
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Quote:
Originally Posted by 27litres View Post
The sunroof has a pressure relief system like the windows do, for injury mitigation.

I would suggest lubricating the mechanism using teflon or silicone spray (so as not to damage the plastics, or leave a sticky surface).

Mine had similar issues this summer and was quite dusty. I cleaned as best I could with a rag and a toothbrush and lubricated, which fixed the issue.
Thanks for your prompt advice, Marty...I'll give it a go later today.

When you said "the mechanism", do you mean everything in sight when the sunroof has been wound fully open using an allen key? Did you remove the motor at any stage of the cleaning procedure?

Cheers,
Mike.
__________________
Current modes of transport:
2004 A8 4.0DTI Quattro
19"wheels; Silver; 109,000 miles; Been off the road for several years. Lotsa work to be done
[BSold with regret:]2002 A8 4.2 (40v) Quattro Sport, 18" QS wheels; Prins LPG[/b], Silver; Black leather; newly-refurbished wheels in Anthracite...pics to follow soon!
2000 P38 Range Rover Vogue 4.6 V8 LPG, Epsom Green, fully-rebuilt engine (Top-hat liners, new camshaft for better mid-range torque); New S/S sports exhaust...SOUNDS BRILLIANT!
2014 Mondraker TrakkerR; 29-er, 30-speed gear train; rise'n'fall saddle; Mountain bike...NOT a cart-horse!
"JONDOR" a 116' long, 17"6" beam Humber Barge, Built 1950, ex oil tanker, fully refurbished Gardner 6LXC engine for propulsion (one day); requires new marine gearbox; 2-cylinder Petter Diesel engine & 3-cylinder diesel auxilliary engines with 12/24v and 230/415v gensets
"JONDOR" is a slow-burn project, being converted to provide suitable accommodation for wheelchair users and their carer/family for short respite breaks. Currently moored on River Humber at Old Beverley Shipyard
SOLD***2006 LWB Ford Transit 2.4 Diesel, Luton Van; Tail-lift; leaking translucent roof SOLD***

Previous vehicles:
Far too many to list individually, but includes 2005 A8 D3 3.0TDI Quattro Sport; 2007 A6 3.0TDI Avant; 2005 A4 2.0 Avant; 2007 A3 2.0TDI; 7-off Citroens, Many Fords, Austin 1100 (my first car), Lotus 7, Rover SD1 3500; SAAB 9000i, SAAB 9000 turbo; BMW 530; another P38 Range Rover (the crap one with BMW 2500 diesel engine...wouldn't tow the skin off a rice-pudding! )
Daren't even mention the traumatic Morris Marina and Ital's....even an Austin Princess. Brain is now hurting somewhat, so giving up for now...
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  #4  
Old 24th March 2019, 12:40 PM
27litres's Avatar
27litres 27litres is offline
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Never touched the motor, just cleaned and lubricated all the bearing surfaces I could find. With the sunroof open (I managed to get it open at some point without using the crank handle - you find that attached to the fuse box cover I believe, though I expect the Allen key approach is fine).

I even put some chain "chukka" grease that I had to hand on the sliding mechanism and also on the small depression at the front that the sunroof looks like it hinges on when lifting the rear. Not sure that's done anything, as the depression (semispherical?) has failed to reveal any marks of usage. It might just be a clearance moulding.
I'm going to keep an eye on this grease for dirt collection, as the mechanism is difficult to access. The sunroof did have a grease of sorts already in there - synthetic lithium or something from what I recall reading from somewhere.
__________________
Cheers

Marty


____________________
Current:
2001 Audi S8 - Brilliant Black with Black interior, C5 RS6 rims (whenever I actually put them on...), Solar Sunroof, Tinted side and rear glass, RNS-D, Grom, Bose, clunky old phone in arm rest!
2002 Audi S8 - Project
Replacement head coming arrived thanks to MJ
Silver with Black interior. All features as the '01, with the 'S' mode auto shifter. Dodgey rear tint (need to find a way to get rid of that).
Family:
2009 Volvo XC90 V8 R Design
- has a louder more obnoxious exhaust than the S8, sounds great! Love this thing - Q7 was double the price, and certainly not double the car!

Sold:
1997 Audi A4
- Hamilton's Club Sport, Achat Grey (will miss the old girl)
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