A8 Parts Forum  

Go Back   A8 Parts Forum > A8 D2 > D2 - Transmission

D2 - Transmission Gearboxes, diffs, drive shafts.

Reply
 
Thread Tools Display Modes
  #1  
Old 17th October 2016, 09:26 AM
David's8's Avatar
David's8 David's8 is offline
Senior Member
 
Join Date: Jan 2012
Location: Helensburgh, Scotland
Posts: 3,506
Default Aaargh - PRNDS!

After many posts re-iterating John at Mackies of Glasgow statements about how the 5HP24 box is a perfectly OK bit of kit, i arrived back home last night from Audi Driver International having driven some 1000miles in 3 days without having skipped a beat. However, went to reverse out this morning to go for a swim and it went into PRNDS . If I stop and restart it works perfectly OK in Drive and Sport (but not tipronic) UNTIL I select reverse when it goes into limp mode. I am about to get VCDS on it after a pint of coffee but I am hoping its just the F125 switch (please!). The box was serviced Aug 2014 at 97k and its now at 109k.
Any suggestions/recommendations?
__________________
2002 D2 S8 – Ming Blue, Valcona leather, Vavona wood insert, solar sunroof (to be fitted), Heated rear seats, extended leather pack, 18” Avus, ski hatch, Bose, auto dim rear view mirror, rear blind.
Reply With Quote
  #2  
Old 17th October 2016, 09:38 AM
The_Laird's Avatar
The_Laird The_Laird is offline
Senior Member
 
Join Date: Jun 2009
Location: Redmile: Leics, Notts, Lincs border - near Belvoir Castle
Posts: 5,069
Default

Mine started to do that a few months ago, most mornings when I reversed out of the garage. I was about to do a scan with the VCDS when it just went away! Hasn't played up for months now.
__________________
2002 Final Edition S8. Ebony black with Silver Grey leather and myrtle wood trim.
Current mods: solar sun roof, 20mm rear spacers, 15 mm on front, red brembo callipers, 6k headlights, rear view camera, engine remap, alloy dash dial rings, alloy navi rings, tt/phaeton pedal upgrade, (and custom matching foot rest) dension ipod interface & parrot hands free kit (both fully hidden), av input, tv in motion switched thro' PF switch in blanking plug right of steering column, Audi 'quattro' sill covers, repositioned centre console switches, radio clock, .
Planned mods: auto-dimming rear view mirror, dash cam (as steamship's), fit the ski hatch, refit philips drl's (or maybe not - nope, definitely not - horrible botch!).
Reply With Quote
  #3  
Old 17th October 2016, 09:59 AM
Adrian E's Avatar
Adrian E Adrian E is offline
Senior Member
 
Join Date: Dec 2010
Location: Gatwick area
Posts: 4,051
Default

If it's otherwise working fine it should just be the switch - it's not that bad a job to swap but the box ideally needs lowering.

There's 2 types depending on wiring so if it is that either order from tps or leave to the garage fitting it, to avoid getting the wrong one
__________________
===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
Reply With Quote
  #4  
Old 17th October 2016, 10:31 AM
David's8's Avatar
David's8 David's8 is offline
Senior Member
 
Join Date: Jan 2012
Location: Helensburgh, Scotland
Posts: 3,506
Default

Quote:
Originally Posted by Adrian E View Post
If it's otherwise working fine it should just be the switch - it's not that bad a job to swap but the box ideally needs lowering.

There's 2 types depending on wiring so if it is that either order from tps or leave to the garage fitting it, to avoid getting the wrong one
I hope it is just theswitch. Will get out there when it stops raining! thanks for the warning about the types. Having just cocked up with lower control arms I'll do some research!
__________________
2002 D2 S8 – Ming Blue, Valcona leather, Vavona wood insert, solar sunroof (to be fitted), Heated rear seats, extended leather pack, 18” Avus, ski hatch, Bose, auto dim rear view mirror, rear blind.
Reply With Quote
  #5  
Old 17th October 2016, 10:34 AM
moltuae's Avatar
moltuae moltuae is offline
RIP 27/02/2021 :-(
 
Join Date: Sep 2014
Location: East Lancs.
Posts: 2,679
Default

My guess would be the F125 switch plug contacts. My car has done that a few times in the past, especially as the colder weather approached. Disconnecting the plug and cleaning the contacts usually fixes it for another year or two.
__________________
Mark
------------------------------------------------------
2002 FE S8 Ebony Black Pearl
------------------------------------------------------

------------------------------------------------------
Cars Owned:
The Tesla Era: 2020 Model S Performance Ludicrous+ (present)
(Black, with all black premium interior and carbon fibre dιcor, 21" sonic carbon twin turbine wheels and FSD capability)

The Audi Era: '97 A8 4.2 (Ming Blue) --> '96 A8 4.2 QS (Dark Green) --> '02 FE S8 (present)
The Citroen Era: '84 BX 1.6 RS --> '89 BX 1.9 DTR Turbo --> '94 XM 2.0L Turbo --> '96 XM 2.0L Turbo Exclusive --> '00 Xantia Activa 2.0L Turbo
The Banger Era: '76 1.2L Lada VAZ-2101 (Ruski Fiat 124) --> '80 1.7L Morris Ital HL, finished in Ermine White and Rust
Reply With Quote
  #6  
Old 17th October 2016, 12:08 PM
tintin tintin is offline
Senior Member
 
Join Date: Feb 2009
Location: Manchester
Posts: 3,560
Default

In my experience it can throw this message once in a blue moon, and then not appear again...hopefully yours will do the same.

Sometimes I think these cars really do have a personality though - maybe yours was reacting to the unexpectedly long drive to Englandshire and back....
Reply With Quote
  #7  
Old 17th October 2016, 12:08 PM
David's8's Avatar
David's8 David's8 is offline
Senior Member
 
Join Date: Jan 2012
Location: Helensburgh, Scotland
Posts: 3,506
Default

VCDS scan shows:

1 Fault found:
17090 - Transmission Range Sensor (F125)
P0706 - 35 - 00- Implausible Signal

So it seems like it is the F125 switch. And, as the lower control arms need renewing and the switch is in that area, they might as well be done at the same time. The Audiforum guide on the process shows it is a DIY fix but I am not sure that some of the fiddly work involved is best (safely) achieved on jacks/wheel ramps.
__________________
2002 D2 S8 – Ming Blue, Valcona leather, Vavona wood insert, solar sunroof (to be fitted), Heated rear seats, extended leather pack, 18” Avus, ski hatch, Bose, auto dim rear view mirror, rear blind.
Reply With Quote
  #8  
Old 17th October 2016, 12:48 PM
HPsauce HPsauce is offline
Senior Member
 
Join Date: Sep 2011
Location: Chilterns, almost over HS2!
Posts: 8,366
Default

Same as me and I plan to get the F125 switch replaced sometime.
Adrian_E had it done a while ago and I think he got a garage to do it as the gearbox needs dropping a bit to get access.
__________________
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!
Reply With Quote
  #9  
Old 17th October 2016, 01:43 PM
David's8's Avatar
David's8 David's8 is offline
Senior Member
 
Join Date: Jan 2012
Location: Helensburgh, Scotland
Posts: 3,506
Default

Quote:
Originally Posted by tintin View Post
In my experience it can throw this message once in a blue moon, and then not appear again...hopefully yours will do the same.

Sometimes I think these cars really do have a personality though - maybe yours was reacting to the unexpectedly long drive to Englandshire and back....
They do need a damn good thrashing every now and again! Maybe it took the hump

My aged parents whom I was taking back up to Scotlandshire didnt even notice we doing 90ish. Just commented on the smooth ride and handling and lack of noise in the back.
__________________
2002 D2 S8 – Ming Blue, Valcona leather, Vavona wood insert, solar sunroof (to be fitted), Heated rear seats, extended leather pack, 18” Avus, ski hatch, Bose, auto dim rear view mirror, rear blind.
Reply With Quote
  #10  
Old 17th October 2016, 02:12 PM
The_Laird's Avatar
The_Laird The_Laird is offline
Senior Member
 
Join Date: Jun 2009
Location: Redmile: Leics, Notts, Lincs border - near Belvoir Castle
Posts: 5,069
Default

Take care David, it can get a little more noisy in the back above the 90-ish kph that you reported doing. Wouldn't want the parents to experience any discomfort!
__________________
2002 Final Edition S8. Ebony black with Silver Grey leather and myrtle wood trim.
Current mods: solar sun roof, 20mm rear spacers, 15 mm on front, red brembo callipers, 6k headlights, rear view camera, engine remap, alloy dash dial rings, alloy navi rings, tt/phaeton pedal upgrade, (and custom matching foot rest) dension ipod interface & parrot hands free kit (both fully hidden), av input, tv in motion switched thro' PF switch in blanking plug right of steering column, Audi 'quattro' sill covers, repositioned centre console switches, radio clock, .
Planned mods: auto-dimming rear view mirror, dash cam (as steamship's), fit the ski hatch, refit philips drl's (or maybe not - nope, definitely not - horrible botch!).
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 10:30 AM.


Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.