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Old 28th December 2020, 08:21 PM
DavidMacA8 DavidMacA8 is offline
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Default Fitting an A4 B6 steering wheel to an A6 C5?!

Hi guys

It's been sometime since I was last here, but I return many Audi's later with a curious query! First off though, I would like to say I hope everyone had a great Christmas, and sincerely wish you all an amazing 2021. Whoever you might be, you'll deserve it!

On to my quandary. I have a 2005 C5 A6 Avant 1.9TDI Final Edition. It has a standard SE spec steering wheel, not MFSW, and neither am I aiming to fit one. I am however, hoping to fit a sport steering wheel. I successfully acquired one from a B6 A4 in the colour I was after, but the airbag connection and setup within the wheel itself seems quite different. The A6 airbag and horn are wired into the airbag assembly, and connect to the car with a single row yellow plug. The sport steering wheel has double row yellow plug, and wiring into the steering wheel itself. Has anyone made this conversion before and/or give me any advice at all?!

I was so sure it would be plug and play, and I've seen so many steering wheels for sale that are advertised as being applicable to the A6 C5 and B6 A4...so am I missing something?!

Looking forward to any assistance anyone might be able to give me, and many thanks in advance!

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Old 28th December 2020, 10:10 PM
MikkiJayne MikkiJayne is offline
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Location: Devon
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Don't see many of those about these days

I assume they are physically interchangeable and its just the wiring which is different?

Do you have the same number & colours of wires in the B6 wheel? Could they be cut and spliced on to the C5 plug perhaps? I've done a few swaps like that between various models, although I don't recall having seen inside a B6 wheel.
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Old 29th December 2020, 09:23 AM
DavidMacA8 DavidMacA8 is offline
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Hi MikkiJayne

No you don't! But my family and I all have one! My Dad has a '98 1.8T saloon, and my Mum has a 1.9TDI Final Edition Avant too. Obviously we just love them!

I bought this one recently, and I've done so much work to get it to a decent standard, and she's going in for paint soon which I'm very excited about!

That's right, they are physically interchangeable and the wheel itself mounts fine, it is just the wiring.

Well we were looking at doing that, but couldn't be sure about which wire was for what! So there were 4 black wires for the original wheel, 2 to the airbag, and the other two for the horn. On the sport wheel, there are 5 wires coming out of 4 pins, so two wires out of one of those pins. They're all black bar one, which is brown. As usual, 2 blacks to the airbag, and then 2 backs to the wheel, and a brown. What worried me was in trying to splice them that I might confuse canbus communication and cause an irreversible fault of some sort! I'll get some photos at some point and make it a bit clearer!
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Old 29th December 2020, 09:33 AM
ainarssems ainarssems is offline
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Does the B6 have 2 stage airbag? That would explain extra wire.
2006 A8 Sport 4.2TDI, 2000 A6 2.5TDI quattro Sport Avant

No longer have 1997 S8, reached end of life with gearbox failure
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Old 29th December 2020, 11:19 AM
paulrstaylor paulrstaylor is offline
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Pretty sure the b7 was the into of dual stage airbags to the a4?
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Old 29th December 2020, 04:53 PM
DavidMacA8 DavidMacA8 is offline
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Hi ainarssems

No the A4 b6 doesn't have a 2 stage airbag - that I'm aware of anyway! The b7 definitely does.
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a4 b6, a6 c5, steering wheel

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