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| D3 - Transmission Gearboxes, diffs, drive shafts. |
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#1
9th May 2014, 06:37 PM
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A8 LWB 3.2FSI 06 Plate EPC light and no reversing lights issue
Hey Guys,
New to the forum, I have the above car and have a problem with when I start the car it flashed red on the dashboard display and the EPC light comes on. I have to then go behind the ashtray and release the gear stick to be able to drive away. Sometimes after doing this the red flashing lights on the display disappear and it just highlights the selected gear....sometimes it does not though! I have also noticed that when selecting reverse with this issue, the PDC and the reversing lights do not come on. It definitely seems to be electronic and when I scanned via VAGCOM there was a fault about a switch that had an intermittent ground or something like that? Any ideas from you guys what it could be? Thanks, Tom... 
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#2
9th May 2014, 07:13 PM
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Sounds like it might be F125 switch on the gearbox working intermittently - if you do a search on here you'll find much about it!
Welcome to the forum - pop to the introductions section and introduce yourself and your car hopefully with some pictures! Where abouts are you? 
__________________
Confidence is the feeling you have before you know better . . . .  Audi A8 D2 3.7 Quattro Sport 1999 FL - Melange 2nd Place Winner - A8-Freunde Annual German Meet 2012 at Edersee 20" x 9" Bentley GTC Wheels with 385mm W12 Front Discs & Bentley Caliper Covers, Front Lowered on Coilovers, Xenons, Combined DRLs and LED Foglights to modified OEM front fog lamp position, Alcantara/Leather, Full Black Alcantara headlining + pillars and blind shelf, Bespoke Flat Bottomed Sports Steering Wheel, Dark Myrtle Wood, Autodim Mirrors, Bose, Blinds, Digital TV, Ski Hatch, Modified rear exhaust section for extra V8 Burble  Audi S8 D2 Final Edition 2002, Avus Silver with Red Leather Interior Tiptronic with Sport mode button, Sony rear entertainment package, Bose sound system, Audi Navigation Plus, 20 inch Final Edition alloys, Full Cat Back Stainless Milltek exhaust, giving a great V8 burble Audi A8L D2 4.2 Petrol with LPG - Ebony Black Audi A8L D4 FL 4.0T Petrol twin turbo - Havana Black Audi A2 1.6 FSi Sport - Dolphin Grey with Votex body kit and Red Leather Interior and some other A8's A8L's and Mercs
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#3
9th May 2014, 08:16 PM
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I'm down in Kettering, Northamptonshire.
Do I need to go to a stealership to get one of these switches or is this something easily supplied elsewhere? Tom...
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#4
9th May 2014, 08:24 PM
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And is this for a D3?
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#5
9th May 2014, 11:20 PM
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Quote:
__________________
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 HeadlightsMy DIY jobs - Fan Jet Windscreen Washers, Retrofitted Electric Side Blinds
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#6
10th May 2014, 08:30 AM
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You should get it scanned for fault codes first to see if it reports any issues. If you do not have any means to do it yourself I can help out an I am just 10-15 miles from you in Rushden.
__________________
Currently 8less 2011 Q7 S Line 3.0TDI, 2016 Tesla Model S 90D 8 history: 2006 A8 Sport 4.2TDI quattro SOLD, 1997 S8, reached end of life with gearbox failure
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#7
10th May 2014, 09:48 AM
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Guys,
Everything I have searched for on the F125 relates to the D2 platform, to confirm my A8 is the D3 platform. Tom... PS I have a VAG-COM interface with VCDS and yes it is reporting a fault with an intermittent ground on the switch....my problem is that I have no idea where it is or how to replace!
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#8
10th May 2014, 10:01 AM
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On the D2 it's mounted onto the transmission, underneath the car, and not easy to get at. See: http://www.audipages.com/Tech_Articl...chreplace.html
As for D3, no idea, but probably similar.
__________________
2003 D2 FL S8. Irish Green Pearl/Beige. Solar sunroof, auto-dim mirrors, electric rear seat functions, ski hatch retrofit; extended leather. Aftermarket DVB-T, reversing camera and full XCarlink (Bluetooth etc.). 2016 Volvo V40 T5 Cross Country (4WD) with ALL the toys including adaptive cruise etc. etc. Osmium Grey with Blonde/Charcoal leather interior. Polestar performance "optimisation". (A much rarer model than a D2 S8 by the way!) Oh, and a brand new engine at just under 30,000 miles on the factory one!  Finally: gone, but not forgotten..... 1998 D2 PF S8. AgateGrey/Platinum. Every option (I think) except electric rear seats, tiptronic steering wheel, ski hatch, towbar & dimming door mirrors. e.g. Cruise control, NavPlus/TV, Bose, GSM, Xenons, Solar roof, Parking sensors, Alcantara/leather everywhere of course. (internal dimming mirror added later)1998 (very early) Ford Focus 1.8 Zetec; ABS/TCS, Heated screen/mirrors, Aircon, Auto-dim mirror, Leather, Trip computer, Cruise control, OEM Ford SatNav with CD changer. And before that a lot of Rover 800s, a few oddities, a lovely Triumph Dolomite 1850HL with Overdrive and way back in my schooldays an Austin Seven aka Mini 850! 
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#9
10th May 2014, 10:15 AM
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I have limited knowledge of D3 but I suspect D3 does not have mechanical link from selector to gearbox and F125 switch like D2. It's all done electrically and the switch is in the gear selector itself and has a different number F***.
What is the exact fault code you are getting?
__________________
Currently 8less 2011 Q7 S Line 3.0TDI, 2016 Tesla Model S 90D 8 history: 2006 A8 Sport 4.2TDI quattro SOLD, 1997 S8, reached end of life with gearbox failure
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#10
10th May 2014, 10:18 AM
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Quote:
 And as requested by Ainars the full details from VCDS would be most helpful (copy and paste?).
__________________
2003 D2 FL S8. Irish Green Pearl/Beige. Solar sunroof, auto-dim mirrors, electric rear seat functions, ski hatch retrofit; extended leather. Aftermarket DVB-T, reversing camera and full XCarlink (Bluetooth etc.). 2016 Volvo V40 T5 Cross Country (4WD) with ALL the toys including adaptive cruise etc. etc. Osmium Grey with Blonde/Charcoal leather interior. Polestar performance "optimisation". (A much rarer model than a D2 S8 by the way!) Oh, and a brand new engine at just under 30,000 miles on the factory one! Finally: gone, but not forgotten..... 1998 D2 PF S8. AgateGrey/Platinum. Every option (I think) except electric rear seats, tiptronic steering wheel, ski hatch, towbar & dimming door mirrors. e.g. Cruise control, NavPlus/TV, Bose, GSM, Xenons, Solar roof, Parking sensors, Alcantara/leather everywhere of course. (internal dimming mirror added later)1998 (very early) Ford Focus 1.8 Zetec; ABS/TCS, Heated screen/mirrors, Aircon, Auto-dim mirror, Leather, Trip computer, Cruise control, OEM Ford SatNav with CD changer. And before that a lot of Rover 800s, a few oddities, a lovely Triumph Dolomite 1850HL with Overdrive and way back in my schooldays an Austin Seven aka Mini 850!
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