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D2 - Interior Electrics Airbags, Sensors, climate modules, instrument clusters, switches etc

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  #1  
Old 21st October 2010, 08:55 PM
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Default Multifunction steering wheel retrofit

I've been asked for some info on this, and its been a long time, but I though I'd post publically what I've looked up for any future reference.

Specifically, I'm dealing with retrofitting the MFSW to a car that has the tiptronic wheel in place already.

There are a number of wiring circuits that connect the existing tiptronuc steering wheel:

1) Horn + ground
2) Airbag ignitor + ground
3) illumination for the buttons
4) tiptronic up / down
5) ground for the above 2

So, there are actually 8 connections:

green - Airbag ignitor
white - Airbag ignitor
brown - horn ground
brown/grey - horn contact
grey/blue - illumination
brown/black - common for gearchange and illumination
yellow/green - tip function
yellow/blue - tip function

Now, the multifunction wheel uses *less* connections.... This is because they cant just keep adding tracks to the slip ring, so instead they take all the comfort functions and put them on a single bus line. The Horn and airbag still stay seperate, but the rest combines:

green - Airbag ignitor
white - Airbag ignitor
brown - horn ground
brown/grey - horn contact
black/red - power +12v
brown - ground
black - bus

So, more function, 1 less wire.

You therefore need a multifunction steering wheel controller module. The MFSW bus is unique, and doesnt simply plug into the canbus or anything useful so the MFSW controller is needed for:

a) sending audio commands across CAN to the radio/telephone
b) taking illumination brightness and sending it to the wheel
c) taking tiptronic gearchanges and sending them to the gearbox ECU
d) (where fitted) taking the drivers seat heating level and sending it to the MFSW wheel

So, the MFSW officially lives behind the glovebox and is physically the size of 2 relay units. It has a number of connectors underneath, which could go on an official Audi base, or you could simply use spade connectors.

Here is my approximation (no warranties!) of where the pins on the MFSW should go:

pin 13: black/red - +12 constant
pin 18: black - bus from steering wheel
pin 15: grey/blue illumination (steal from back of any switch, NOT the triptronic wheel, thats the wrong illumination)
pin 6: green/red Kline (can take from back of audio unit)
pin 12: black/red +12 ignition
pin 1: orange/brown - Canbus Low (take from back of instrument cluster)
pin 3: orange/purple - Canbus High (from back of instrument cluster)
pin 2: brown/black -> gearbox ecu pin 13 (could be taken from old tiptronic s/w connections)
pin 7: yellow/green -> gearbox ecu pin 46 (could be taken from old tiptronic s/w connections)
pin 11: yellow/blue -> gearbox ecu pin 47 (could be taken from old tiptronic s/w connections)

So, it is a bit of a job on. Glovebox out, steering wheel off, instrument cluster out, and string bits of wires all the way down the old steering wheel connections via the back of the dash from the instrument cluster via the radio/nav (and drivers heated seat switch if needs be) and onto the back of the glovebox.

Note as well, that if you are lucky enough to have a heated steering wheel, that it has a different slip ring. The current needed to heat the wheel cant pass through the ring, so it has a brushes arrangement where a much bigger contact is made. This basically just needs a +12 and ground which can be found easily in the vacinity of the ignition barrel...

Voila....
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The 17 year old Driver Wagon 2015 Skoda Citigo Monte Carlo. Alloys, Power steering, Aircon, Leccy windows, Sat Nav, bluetooth, central locking, cup holders, 59 whole bhp. Million times better than my first car. Well jealous.....

The First 20 Audis:

2001 D2 4.2 QS Silver, 1997 D2 S8 Silver, 1999 D2 4.2 Silver, 2002 D2 S8 Dolphin Grey,
2003 C5 RS6 Blue, 1998 D2 S8 Black, 2000 D2 4.2 QS/S8 Ming Blue, 2003 D3 4.2 Ming Blue,
2005 B7 S4 Blue, 2006 D3 3.0 Tdi Black, 1999 D2 4.2 Silver, 2003 D3 4.2 LPG Crystal Blue,
2000 D2 S8 Silver, 2007 3.0 Tdi Q7 Black, 2009 B8 S4 Black, 1998 D2 S8 Agate Grey,
2006 D3 4.2 Tdi Blue, 2006 D3 S8, 2007 Q7 3.0 Tdi, 2006 C6 S6,

The Second 20 Audis:

2011 A7 Sline, 2001 A2 1.4 Tdi Black, 2002 A2 1.4 Tdi Silver, 2006 A8 4.2 Tdi Blue,
2007 4.2 Tdi Q7, 2006 S4 Cab Silver, 2010 RS6 Saloon Black , 2007 TT Roadster,
2010 A8 D4 4.2 Silver, 2006 C6 A6 2.7 Tdi Quattro, 2000 D2 4.2 QS/S8 Ming Blue (again), 2008 Q7 4.2 Black,
2009 C6 RS6 Saloon Daytona Grey, 2001 Fully Loaded A2 Tdi, 2006 Avant S6 Black, 2007 VW Caravelle Exec Black (almost an Audi)
2009 TT Roadster Daytona, 2015 Q7 4.2 tdi lava grey, 2002 GmbH D2 demonstrator, 2006 D3 A8 LWB 4.2 Tdi Black

Most Recent Audis:

2001 A2 1.4 Tdi Black, 2007 4.2 FSi Q7 ABT Blue, 2016 S5 Coupe Launch model, 2004 S4 B6 Cabriolet, 2016 Q7 Sline White, 2006 Q7 4.2 FSi Black, 2012 Q7 Sline+ 4.2Tdi White, 2008 Blue Audi S8

Everything Else

1989 Subaru Justy, 1986 Vauxhall Cartlton 2.0 GL, 1985 Vauxhall Carlton 2.2 CDi, 1987 Ford Sierra XR4x4, 1983 Vauxhall Senator, 1985 Vauxhall Senator 3.0i, 1997 Polo Saloon, 1997 Peugeot 306 1.9 TDi, Ford Sierra Sapphire 2000E, 1990 Subaru Justy, 2000 Subaru Impreza, 2000 Subaru Impreza RB5, 1993 Range Rover LSE, 2005 VW Bora, 2003 Skoda Superb, 2003 VW Passat V6 4 Motion, 1996 Peugeot 106, 2000 Range Rover 4.0, 2019 Tesla Model 3 Performance
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  #2  
Old 17th November 2010, 08:51 AM
GlynH GlynH is offline
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Ian,

Only just seen this and many thanks for posting.

I will read, digest and see if I have the courage to try it myself.

Only had the MFSW for 2 years now...

You mention illumination on the MFSW...does the original/standard 3-spoke tiptronic wheel have illumination because mine never has?

BTW the Hybrid TV Tuner works well...thanks.

I believe you originally said you had the harness for it as well...not that I need it for the S8 but it would make my analogue TV tuner a more attractive buy for someone...

I did have to take off the plastic housing around the four antenna connectors...don't suppose you might know the part numbers to suit the hybrid antenna sockets do you?

Maybe I should ask Carl if he has any kicking around...

Thanks & kind regards,
-=Glyn=-
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  #3  
Old 17th November 2010, 09:50 PM
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Ive got the original tiptronic SW and it illuminates the 2 buttons when you put it into tiptronic mode and they go off at other times
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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

Last edited by Architex_mA8tey; 22nd November 2010 at 11:31 PM.
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  #4  
Old 18th November 2010, 10:10 AM
GlynH GlynH is offline
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Thanks for the heads-up...I have never noticed them illuminate but maybe I haven't tried tip in the dark?

Also does anyone with the MFSW have the part number of the steering wheel module from a VagCom/VCDS scan please?

Looking at Paul Waterloo's MFSW retrofit I see he uses MFSW Tip/CAN Control Module 4B0907487J but when I checked it looks like the 'J' is marked as a supercede and the current number is 4B0907487H which looks like a step backwards to me?

Not sure if that is just the difference between the US & UK market or whether I have been given incorrect information.

The Dual Relay Base I am told is 4A0937503 but I can't be sure if this is indeed the dual relay base or a single one and I need to order two!

If some kind soul could advise it would be very much appreciated.

Thanks & kind regards,
-=Glyn=-
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  #5  
Old 22nd November 2010, 07:41 PM
Buelldozer
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I have a multifonction steering whell on my S8. Do you think it is possible to retrofit the tiptronic steering wheel or better, the new R8 / TT tiptronic pad steering wheel?
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  #6  
Old 3rd February 2011, 08:53 PM
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Thanks for excellent writeup, Ian

Question:

I have FL 2002 D2 with sport tiptronic steering wheel, with RNS-D --> RNS-E upgrade and with OEM bluetooth module married with RNS-E.

Now I want to upgrade my sport tiptronic steering wheel to the one from more modern Audis where RNS-E was standard. Say from 2008 A6. Or something like this with "formula 1" tiptronic buttons.

The reason behind the upgrade is to be able to control RNS-E and bluetooth stuff from steering wheel.

Now the question: Can such upgrade be accomplished successfully? I specifically worry about tiptronic buttons, since new wheel comes with new control module I guess and the signal from output of that new control module can be different from what gearbox expects to hear. Also, not sure about airbag electrical connection (plug compatibility).

Can someone please advise?

Cheers.
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Last edited by notorious; 3rd February 2011 at 10:33 PM.
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Old 4th February 2011, 08:59 AM
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This has been looked at before, although getting the multifunction steering wheel to work and tiptronic etc should be pretty easy, the later cars have dual stage airbags I believe and from what I've read on other forums its a total no-no to hook up a dual stage airbag to a single stage one......
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For parts enquiries and Forum User Administration please contact customer services directly, not me - enquiry@a8parts.co.uk, www.a8parts.co.uk, or call 01642 783537

The Daily Town Car - 2023 Tesla Model Y Performance. Black with Black. Giant ipad screen, huge sunroof, 4 wheel drive, Tow bar, lots of ooomph and made in China, so actually built properly unlike the Californian ones.

The Family Wagon - 2018 Tesla Model X. Black, 7 Seats, Towbar, Homelink, Enhanced Auto pilot with Summon and self park, Heated front seats, CCS Charger upgrade, MCU2 Upgrade, Falconwing Doors, Self opening / closing doors, Netflix, Spotify, toys, Air suspension, alcantara roof + lots of other stuff......

The 17 year old Driver Wagon 2015 Skoda Citigo Monte Carlo. Alloys, Power steering, Aircon, Leccy windows, Sat Nav, bluetooth, central locking, cup holders, 59 whole bhp. Million times better than my first car. Well jealous.....

The First 20 Audis:

2001 D2 4.2 QS Silver, 1997 D2 S8 Silver, 1999 D2 4.2 Silver, 2002 D2 S8 Dolphin Grey,
2003 C5 RS6 Blue, 1998 D2 S8 Black, 2000 D2 4.2 QS/S8 Ming Blue, 2003 D3 4.2 Ming Blue,
2005 B7 S4 Blue, 2006 D3 3.0 Tdi Black, 1999 D2 4.2 Silver, 2003 D3 4.2 LPG Crystal Blue,
2000 D2 S8 Silver, 2007 3.0 Tdi Q7 Black, 2009 B8 S4 Black, 1998 D2 S8 Agate Grey,
2006 D3 4.2 Tdi Blue, 2006 D3 S8, 2007 Q7 3.0 Tdi, 2006 C6 S6,

The Second 20 Audis:

2011 A7 Sline, 2001 A2 1.4 Tdi Black, 2002 A2 1.4 Tdi Silver, 2006 A8 4.2 Tdi Blue,
2007 4.2 Tdi Q7, 2006 S4 Cab Silver, 2010 RS6 Saloon Black , 2007 TT Roadster,
2010 A8 D4 4.2 Silver, 2006 C6 A6 2.7 Tdi Quattro, 2000 D2 4.2 QS/S8 Ming Blue (again), 2008 Q7 4.2 Black,
2009 C6 RS6 Saloon Daytona Grey, 2001 Fully Loaded A2 Tdi, 2006 Avant S6 Black, 2007 VW Caravelle Exec Black (almost an Audi)
2009 TT Roadster Daytona, 2015 Q7 4.2 tdi lava grey, 2002 GmbH D2 demonstrator, 2006 D3 A8 LWB 4.2 Tdi Black

Most Recent Audis:

2001 A2 1.4 Tdi Black, 2007 4.2 FSi Q7 ABT Blue, 2016 S5 Coupe Launch model, 2004 S4 B6 Cabriolet, 2016 Q7 Sline White, 2006 Q7 4.2 FSi Black, 2012 Q7 Sline+ 4.2Tdi White, 2008 Blue Audi S8

Everything Else

1989 Subaru Justy, 1986 Vauxhall Cartlton 2.0 GL, 1985 Vauxhall Carlton 2.2 CDi, 1987 Ford Sierra XR4x4, 1983 Vauxhall Senator, 1985 Vauxhall Senator 3.0i, 1997 Polo Saloon, 1997 Peugeot 306 1.9 TDi, Ford Sierra Sapphire 2000E, 1990 Subaru Justy, 2000 Subaru Impreza, 2000 Subaru Impreza RB5, 1993 Range Rover LSE, 2005 VW Bora, 2003 Skoda Superb, 2003 VW Passat V6 4 Motion, 1996 Peugeot 106, 2000 Range Rover 4.0, 2019 Tesla Model 3 Performance
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Old 4th February 2011, 06:49 PM
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Didn't know about dual stage airbags!

Does it mean the only option for me is traditional MFSW from 2002 FL? But can it control RNS-E with bluetooth then?

Cheers.
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Old 7th June 2011, 01:15 PM
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OK, Since I've accomplished retrofitting OEM A8 D2 MFSW and several folks have asked about it during annual meet:

1. You can control RNS-D and RNS-E with steering wheel buttons. Previous, Next track/station, volume up/down
2. You can control RNS-E bluetooth telephone unit with steering wheel buttons, i.e. browse phone book which is displayed on DIS (both names and phone numbers), initiate and end the call
3. You can initiate voice commands for RNS-E (push-to-talk button).
4. Steering wheel heating feature can be connected to driver seat heating switch.
5. There are tiptronic buttons on the wheel too.

Very detailed instruction how to accomplish this retrofit is here in PDF format:

http://www.motor-talk.de/forum/aktio...hmentId=695282

Document is about A6, but everything matched my car, including all part numbers, and I've checked all my steps with ETKA and ELSA wiring diagrams.

(tried to upload PDF file directly to this post, but it is 1.2 MB and is just too large)
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Last edited by notorious; 8th June 2011 at 12:50 PM.
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  #10  
Old 7th June 2011, 02:15 PM
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Architex_mA8tey Architex_mA8tey is offline
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Thats good info Sergey Im sure Mike can get it uploaded and into a sticky
__________________

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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