Chorus 3 radio: Support for multi function steering wheel?

[Gunnark100]

Its safe to say, i am out of ideas. But as i said over pm, error code in steering module cant be issue with radio coding, it just cant see the buttons(and should regardless of radio coding)! But i see you used correct wiring loom also with index A as all recommend if you go from nonmulti to multi wheel.

Not our home language, but parts are the same

https://www.drive2.ru/l/9274438/

Круиз Контроль у�тановлен! — бортжурнал Audi A4 White Dream+Revo 220 hp | DRIVE2

and one from audizine:
DIY: MFSW Retrofit for B8

So maybe still wiring issue, module issue or buttons have fault!

01426 Operating unit in steering wheel -E221- t No communication t Implausible signal

t Open circuit in wiring - loss of link between control unit and steering wheel t [COLOR=#1B8EDE !important]Incomprehensible[/COLOR] messages on data bus (control unitand steerig wheel electronics are linked via CAN bus)

– Fault-finding in line with current flow diagram→ Current flow diagrams, Electrical fault finding and Fitting locations – Eliminate open circuit in wiring – Check wiring between control unit and steering wheel – Replace buttons in steering wheel → Radio, telephone and navigation system; Rep. Gr.91 – Replace steering wheel → Running gear; Rep. Gr.48

[SchrodingersCat]

Het again, thanks for all the information Gunnark. I had a read through the guides you gave. From reading them, I saw that one fella had lights on the controls on his MFSW. It dawned on me that this was something that I did not have.



To confirm, I removed the controls and opened them up.






Sure enough, there were LED's under each button. THese were not getting lit. This suggested that the controls were not getting any power. Using a multimeter, I checked the three pins going to the controls. The red wire was ground (whyyyy would you choose that colour VAG!) , but there was no power on either the yellow or the black wire. I went and tested all 1-6 pins on the MFSW connector. Pin 3 (red) was ground, but there was no power on *any* of the other pins.

This suggests that the issue is not with the MFSW. The issue could be with the harness, clock spring, badly programmed clock module or a fuse?
I dont beleive its the harness myself, as when I did out the pinout I would have tested all the pin connections with a multimeter.
That leaves the the clock module, badly programmed clock module, or fuse.

As such, I was wondering if anyone could help with the following two questions:

1. Does anybody know if there is a fuse that powers the MFSW?
2. If I am to replace the clock spring module, what is the part number of the proper clock spring that I should retrofit?

Thanks again for all your help. :-)

[Gunnark100]

1. Does anybody know if there is a fuse that powers the MFSW?
2. If I am to replace the clock spring module, what is the part number of the proper clock spring that I should retrofit?

Thanks again for all your help. :-)

Regarding fuse, its from lhd manual info:

Fuses on the passenger's side
Some of the items listed are only fitted on certain models or are
optional extras
Fuse list
Fuse list
No. Electrical equipment amps
Fuse carrier (black)
1 Vacant
2 Vacant
3 Vacant
4 Vacant
5 Steering column switch module 5
6 Electronic Stabilisation Program 5
Fig. 285 Diagram of
fuse box (left-hand
drive vehicle)
7 Diagnostic connector 5
8 Gateway (diagnostic interface for data bus) 5
9 Vacant
10 Vacant
11 Vacant
12 Vacant
No. Electrical equipment amps
Fuse carrier (brown)
1 CD drive 5
2 Switch module for Audi drive select 5
3 MMI/Radio 10/20
4 Light switch 5
5 Control unit for instrument cluster 5
6 Ignition lock 5
7 Vacant
8 Air conditioner blower 40
9 Steering column lock 5
10 Air conditioner 10
11 Diagnostic connector 10
12 Steering column switch module 5


F looks ok for you...its in german, mufu is mfsw, GRA is normal cruise control, FIS is DIS

Firma KOSTAL:
8K0 953 568 B : GRA, MUFU, FIS (nur bei A5 MJ 2008 bis 09/2007, anderer Airbaganschluss als bei den neueren, das gilt auch für ohne Index bis Index C, passt auf keinen Fall in den A4 8K!)
8K0 953 568 D : FIS, kein GRA, kein MUFU
8K0 953 568 E : GRA, FIS, kein MUFU!
8K0 953 568 F : GRA, MUFU, FIS, kein ACC!
8K0 953 568 G : GRA, ACC, MUFU, FIS,...
8K0 953 568 J : FIS, kein GRA, kein MUFU
8K0 953 568 K :GRA, FIS, kein MUFU!
8K0 953 568 L : GRA, MUFU, FIS, kein ACC!
8K0 953 568 M : FIS, GRA, MUFU,ACC

Firma VALEO (ab 1/2011):

8R0 953 568 H : FIS, kein GRA, kein MUFU
8R0 953 568 J : GRA, FIS, kein MUFU!
8R0 953 568 K : MuFu-tauglich, GRA, FIS, kein ACC
8R0 953 568 M : GRA,FIS,MuFu, ACC
FL:
8R0 953 568 N : FIS, kein GRA, kein MUFU
8R0 953 568 P : FIS, GRA?, kein Mufu
8R0 953 568 Q : GRA, MUFU, FIS, kein ACC!
8R0 953 568 R : Mufu; GRA; ACC; Side Assist; FIS
8R0 953 568 S : FIS, GRA, MUFU, ACC

Lenkstockhebel und Lenksäulenstg müssen vom gleichen Hersteller sein!
8R0...=VALEO
8K0...=KOSTAL
4G0...=VALEO
4G8...=KOSTAL

Welcher Hersteller verbaut ist, ist nur durch Auslesen oder Ausbau erkenntlich!
Die Variante 8K0 953 568 G,M und 8R0 953 568 M,S sind die mit allen Funktionen, 8K0 953 568 M und 8R0 953 568 M,S werden über den Ersatzteilweg für den A4,A5,Q5 angeboten.

[Lockstock]

Hi. I have an A4 b7 S-Line saloon, and I'm facing the same problem, I don't know if the mfsw is in 100% working order-Ebay.....I've been to a garage who work on coding, servicing etc VW's & Audis and I left disappointed as their engineer came out of the service area and explained that there may be wiring that is not present, so not able to get it all working......The horn works so I'm pretty sure all is ok, I do wish I could get answers as I really had to 'hunt' to get the part to remove the wheel and I so wanted to upgrade the wheel.
If you get answers will you post them? If I do i will be back here!
Kind regards
Lockstock