Steering wheel wiring diagram
I got a new facelift steering wheel but when I installed it the buttons,paddles and horn all do not work. As far as I know,if the steering column is the same the wheel should be plug and play except the lights.
Also, I realized that the brown connector has 5 pins on the new steering wheel whereas the old one(and steering column) has 3.
Anyway, the wheel I initially received was for a W231, W212, W207, W172, C218, X166 and W166 with vibration option.
Is your horn working?
If you can check the part number of the contact plate on your steering wheel, I will be able to help you out more. You should have A 2184640117.
In order to access the contact plate, you will first have to remove the silver coloured plate. You will have to remove 3 silver torx bolts. I think it's T20. Can't remember. There's also another black torx bolt that is located in the middle. Once you remove the silver plate, you will be able to see the black contact plate beneath.
As for the speed limiter I only found out its function today. Was wondering what it's for when I first got it. Maybe it's an Euro option. I got the steering column from Germany.
If you can check the part number of the contact plate on your steering wheel, I will be able to help you out more. [/FONT][/COLOR]You should have A 2184640117.
In order to access the contact plate, you will first have to remove the silver coloured plate. You will have to remove 3 silver torx bolts. I think it's T20. Can't remember. There's also another black torx bolt that is located in the middle. Once you remove the silver plate, you will be able to see the black contact plate beneath.
Trending Topics
The Best of Mercedes & AMG
As for the speed limiter I only found out its function today. Was wondering what it's for when I first got it. Maybe it's an Euro option. I got the steering column from Germany.


I went to DCT motorsports and Ivan gave me a big help and sort this issue out
While examining my paddles and the other working paddles that DCT motorsport have, we found that my paddles (in Carbon Fiber) have different part number than the working one. CF paddles were the type for 2008-2011 steering wheels, so it has different wire termination than the paddles (silver) for 2012 steering wheel. The paddles has two cables (yellow and black), and the difference between the two models was they were in opposite side.
So we flipped the termination (black to yellow, and yellow to black), and it worked perfectly (what it's in the photo is the right termination).
Long story short, if the paddles were from the older model (2008-2011) and will be connected to 2012 steering wheel, the termination of the paddles cable need to be changed/flipped.
Big thanx to Ivan from DCT motorsports for his talent and help.



