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| D2 - Transmission Gearboxes, diffs, drive shafts. |
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#1
2nd October 2012, 03:44 PM
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Versions of gearbox TCU for PF S8
Having had my gearbox "transformed" recently by an oil and filter change I still feel it has the odd "twitch" so I'm looking at trying a new TCU.
I know that the previous owner had a couple of changes made to the car electronics, one of which was to change the shift pattern to hold gears longer - might that just have been a coding change? (the other was to remove the 250kph limit  which I think was a chip replacement)There seem to be a number of TCU versions available, from A8parts and others, all 4D0 927 156 Bx (x varies) for the PF D2 S8. (The FL D2 models seem to have a Cx suffix). Does anyone know what the significance of the version suffixes is? So far I've seen BG, BK and BL?
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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! 
Last edited by HPsauce; 2nd October 2012 at 05:59 PM. 
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#2
2nd October 2012, 04:04 PM
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There's a lot of potential variations (well 6 actually) and from what I can tell it depends on the engine code which one(s) you should look at.
What's your engine code and I'll tell you which part numbers it specifies for the tcu?
__________________
===SOLD===2002 Audi S8 D2 Final Edition (yes, really) in Avus Silver with purple extended leather===SOLD=== 2011 S5 Sportback in Phantom Black with black Super Sports leather, 9x20s, tech pack high, adaptive xenon plus, intelligent key, memory seats pack, sunroof, B&O, Audi Drive Select & quattro Sports Diff, DAB, parking system plus 2015 VW Golf GTI Performance Pack in Carbon Grey with black Vienna leather, tech pack (Discovery Pro nav & Dynaudio), DCC, factory towbar and retrofit RVC
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#3
2nd October 2012, 04:26 PM
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Thanks, but being a bit dumb, what's an engine code look like and where do I find it?
It a 32V PF S8 (1998) if that helps.... Isn't that an ABZ or is it something more specific you need?
__________________
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!
Last edited by HPsauce; 2nd October 2012 at 04:41 PM.
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#4
2nd October 2012, 05:02 PM
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not sure how many variations on engine code there might be, but it'll be in the front of your service book - you're right it's a 3 letter code
__________________
===SOLD===2002 Audi S8 D2 Final Edition (yes, really) in Avus Silver with purple extended leather===SOLD=== 2011 S5 Sportback in Phantom Black with black Super Sports leather, 9x20s, tech pack high, adaptive xenon plus, intelligent key, memory seats pack, sunroof, B&O, Audi Drive Select & quattro Sports Diff, DAB, parking system plus 2015 VW Golf GTI Performance Pack in Carbon Grey with black Vienna leather, tech pack (Discovery Pro nav & Dynaudio), DCC, factory towbar and retrofit RVC
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#5
2nd October 2012, 05:16 PM
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Quote:
 (nor the boot sticker, lost in a body shop) How about AHC? Engine number on V5C starts AHC.
__________________
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!
Last edited by HPsauce; 2nd October 2012 at 05:19 PM.
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#7
2nd October 2012, 05:43 PM
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Engine code is AHC for PF S8
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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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#8
2nd October 2012, 06:07 PM
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Yep, AHC defo an option
That has 4 options associated with it - BG, BM, BK or BL BG is associated with gearbox code DYM BM - ECX, GDC BK - DTD, DYM, GDB BL - ECX Sounds like the loss of your stickers could prove to be a major PITA unless your local dealer can print off the spec details based on VIN only? Other option is to pull yours and ID the existing part number? So basically it sounds like there will be one 'correct' part for your engine and gearbox combo unless you get lucky and it's a DYM or ECX. Looking at engine and gearbox codes in more detail - the AHC engine was fitted from 09/96 to 12/98 and the gearbox codes were used as follows: DTD - 03/97-12/98 DYM- 08/97-05/98 ECX - 05/98-12/98 GDB - not listed! GDC - also not listed Hope that helps a bit! Adrian ETA: AKH was also an engine code for PF, but those are only 2 options listed. FL has 4 options for engine code
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===SOLD===2002 Audi S8 D2 Final Edition (yes, really) in Avus Silver with purple extended leather===SOLD=== 2011 S5 Sportback in Phantom Black with black Super Sports leather, 9x20s, tech pack high, adaptive xenon plus, intelligent key, memory seats pack, sunroof, B&O, Audi Drive Select & quattro Sports Diff, DAB, parking system plus 2015 VW Golf GTI Performance Pack in Carbon Grey with black Vienna leather, tech pack (Discovery Pro nav & Dynaudio), DCC, factory towbar and retrofit RVC Last edited by Adrian E; 2nd October 2012 at 06:10 PM.
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#9
2nd October 2012, 06:19 PM
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Thanks for that. The car is October 98 so I guess DTD or ECX could apply.
Any idea what those gearbox codes mean and where to find them?
__________________
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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#10
2nd October 2012, 06:33 PM
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There should be a ZF plate attached to the gearbox which will include the ZF part number and should also have the Audi part number (or at least part of it) on there. It may be possible to then work it back from that to the 3 letter code.
Is the TCU that difficult to access just to read the part number off the label? Most of the good ZF info online is based around the American market and I have a hazy recollection that they never got the PF? I certainly can't find the gearbox codes listed in the guides I've seen. Might be worth a call to technical support at ZF UK (I've spoken to them about fluids before and they were very helpful) to see if they can tell you if there's any real difference between part numbers?
__________________
===SOLD===2002 Audi S8 D2 Final Edition (yes, really) in Avus Silver with purple extended leather===SOLD=== 2011 S5 Sportback in Phantom Black with black Super Sports leather, 9x20s, tech pack high, adaptive xenon plus, intelligent key, memory seats pack, sunroof, B&O, Audi Drive Select & quattro Sports Diff, DAB, parking system plus 2015 VW Golf GTI Performance Pack in Carbon Grey with black Vienna leather, tech pack (Discovery Pro nav & Dynaudio), DCC, factory towbar and retrofit RVC
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