svarre Posted June 28, 2004 Report Share Posted June 28, 2004 Hi everybody I recently bought a A8 4.2 from 99 and I'm really pleased with it, however I'm not sure if the Solar sunroof works. I think it is kind a cool inside (mind u I live in the UK so its not really hot) but I never hear any noises. How do I check to se if it works or not, Is there even a fuse?? Thanks for any help P.S. I think this forum is great, I thought it was only old rich guys and me how owned a A8….Guys like that normally doesn’t thinker to much with their cars. Link to comment Share on other sites More sharing options...
SneakyMcC Posted June 28, 2004 Report Share Posted June 28, 2004 Aye-up chuck! Welcome t'good ship TSN. Not'gorra solar roof on mine, so I's no idea... Bound t'be folk that get'thee some answers round'ere Link to comment Share on other sites More sharing options...
Sven Posted June 28, 2004 Report Share Posted June 28, 2004 Someone called? Hi A8UK, welcome to TSN! The solar roof only works when: <ul type="square"> [*] middle vents (front and back) are opened. [*] the car is in direct sunlight (roof closed or tilted). [*] the engine is off You may notice it when you enter the car, and the conditions above apply. It's not loud, but you can definitely hear the blower working. It's a great feature, and the car is never too hot or stuffy when you enter. I really like it! Never checked the fuse, but I suppose there must be one... Link to comment Share on other sites More sharing options...
svarre Posted June 30, 2004 Author Report Share Posted June 30, 2004 Thanks guys for the warm welcome and the speedy response. I have the setup as you descried Sven, however I don’t hear any blower running. I have a friend that also have the Solar roof and I can easily hear his blower running so I suspect their is a problem with mine. Any ideas are greatly appreciated. It would be nice to get that feature running. Cheers Per Svarre Link to comment Share on other sites More sharing options...
Sven Posted June 30, 2004 Report Share Posted June 30, 2004 Hi Per, I'd go hunting for fuses and relays first, they should be indicated in the manual. If that doesn't solve anything, maybe someone with a repair manual (not me - yet) could post a pic of the diagram(s) for the solar roof. I'm not aware of any common faults. Link to comment Share on other sites More sharing options...
svarre Posted June 30, 2004 Author Report Share Posted June 30, 2004 Thanks Sven I will do that, I will keep you posted if I find the solution. Why dosent everybody have the manual?? Cheers Per Svarre Link to comment Share on other sites More sharing options...
Sven Posted June 30, 2004 Report Share Posted June 30, 2004 The repair manual you mean? Some have the Bentley manual, but that's by Audi of America, so based on the USA models. I'm still looking hard to find ELSA, the factory repair manual, but that's hard to come by. The owners manual you should have received with the car, along with the service booklet and some other manuals (quick reference guide, navi manual etc). There are some online Quick Reference Guides (in pdf) in "useful links" in this subforum, and for Navi+ also. The fuses etc. are in the Owners Manual though. Link to comment Share on other sites More sharing options...
Tomk Posted June 30, 2004 Report Share Posted June 30, 2004 this sounds kind of cool how do i know if i have it on my 4.2 97' sport ? Link to comment Share on other sites More sharing options...
audia8s2 Posted June 30, 2004 Report Share Posted June 30, 2004 Big glass sunroof with solar panels in it........... Link to comment Share on other sites More sharing options...
svarre Posted July 1, 2004 Author Report Share Posted July 1, 2004 Sven Do you mean "VW/AUDI - ELSA WIN 3.0"? Is that the repair manual? Thats 17CD!!! Per Link to comment Share on other sites More sharing options...
Sven Posted July 1, 2004 Report Share Posted July 1, 2004 Yeh, 19 even IIRC... Or a DVD. Link to comment Share on other sites More sharing options...
Sven Posted July 1, 2004 Report Share Posted July 1, 2004 BTW: have a toy with the temp settings. Just occurred to me that may influence the working... Link to comment Share on other sites More sharing options...
svarre Posted July 6, 2004 Author Report Share Posted July 6, 2004 Gents I have now traced and examined all fuses and have not been able to find any solution. I really don’t want to go to the stealers and ask them to fix it (I’m not a millionaire) I don’t even think they can fix it, they went even able to tell me how it was suppose to work in the first place. So please if any body out there has any suggestions it would be very much appreciated. Cheers Per Svarre Link to comment Share on other sites More sharing options...
Sven Posted July 6, 2004 Report Share Posted July 6, 2004 I'll have another look when/if we get a bit of sun... Link to comment Share on other sites More sharing options...
Sven Posted July 6, 2004 Report Share Posted July 6, 2004 Electrical testing Functional description of solar roof <ul type="square"> [*] Solar operation is only possible if the sun roof is closed or raised (the solar energy converted into electrical energy by the solar roof is transferred to the vehicle electrics via contacts -A- (at the front edge of the sun roof) and -B- (in the frame of the sun roof)). [*] Solar operation is not possible if the ignition is switched on, if the auxiliary heater/auxiliary ventilation mode is in operation or if the "residual heat" function is active (the operating and display unit -E87 actuates the isolation relay -J309 which switches the power supply for the fresh air blower -V2 from the solar cells -C20 to terminal "30"). [*] The energy yielded by the solar cells -C20 is converted in the solar operation control unit -J355 (installed between the sun roof headliner and solar roof) (e.g. from 6.5 V and 2.5 A to 3.5 V and 4.6 A). [*] The electrical energy yielded by the solar roof is calculated using the following formula: Solar radiation x Solar cell surface area on sun roof x Efficiency of solar cells -C20 x Efficiency of control unit -J355 Example: ________________________________________________ Solar radiation --------------------- 500 W/m2 Solar cell surface area on sun roof -- x 0.21 m2 Efficiency of solar cells -C20 ------- x 0.13 Efficiency of control unit -J355 ----- x 0.9 _________________________________________________ Yielded electrical energy ----------- = 12 W Note: <ul type="square"> [*] Contacts -A- and -B- (on the sun roof and sun roof frame) used to transfer the generated electrical energy must be clean and free of any lubricating grease. [*] If necessary, a thin coating of contact grease may be applied to contacts -A- and -B- (electrically conductive protective and lubricating agents are commercially available from electronics traders). Checking functioning of solar roof Special tools, testers and other items required <ul type="square"> [*] 12 V test lamp (max. 5 W) Test condition <ul type="square"> [*] Sun roof closed. [*] Park vehicle in sunlight Notes: <ul type="square"> [*] In unfavourable weather conditions, the solar roof can be illuminated using e.g. two commercially available 500 W halogen lamps. The lamps must be located at a distance of 500 mm from the sun roof. [*] When the solar roof is illuminated using halogen lamps, electrical energy of only approx. 1.5 W is yielded (the fresh air blower -V2 rotates, but the air flow is virtually undetectable). - Adjust air distribution of air conditioner to "dash panel vents". - Open "centre" dash panel vents (close all other vents). - Switch off ignition (operating and display unit -E87 goes dark). - Air should be flowing from "centre" dash panel vents (if necessary, check by moistening surface of your hand and holding it in front of vent). If fresh air blower -V2 is not functioning: <ul type="square"> - Open sun roof approx. 10 cm. - Connect 12 V test lamp (max. 5 W) between two contacts -A- of sun roof. - Test lamp should flicker or light up (depending on intensity of solar radiation). If test lamp flickers or lights up, solar roof is functioning OK. <ul type="square"> - Check cabling to fresh air blower -V2 (via isolating relay -J309): ________________________________________________________________________________________________________________________ <font color="darkblue"> Hope this helps! </font> Link to comment Share on other sites More sharing options...
audia8s2 Posted July 6, 2004 Report Share Posted July 6, 2004 The cost of sending the motor into your dealer to diagnose the problem should be minimal???? My vehice has been in on many an occasion when I've had a problem, for example the current the oil leak and never been charged for diagnostics. Or am I a long way form the mark? Link to comment Share on other sites More sharing options...
svarre Posted July 6, 2004 Author Report Share Posted July 6, 2004 Thank you very much Sven, you are the man. I will get back with my findings. Thanks again. Per Link to comment Share on other sites More sharing options...
Sven Posted July 6, 2004 Report Share Posted July 6, 2004 [ QUOTE ] The cost of sending the motor into your dealer to diagnose the problem should be minimal???? My vehice has been in on many an occasion when I've had a problem, for example the current the oil leak and never been charged for diagnostics. Or am I a long way form the mark? [/ QUOTE ] Depends I guess. From what I understand you still have some dealer warranty? That may be the reason...? IMO it never hurts to know/do as much as possible yourself. At least you know what's going on, and if you can do it yourself you save xx per hour in labour... Link to comment Share on other sites More sharing options...
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