2work
Well Known Member
Tom, I have a heated steering wheel in my Macan, so I have some experience of this. I can tell you that having the steering wheel connected to the heated seats is not a good idea. I often turn the wheel heating off after a short time as it gets too hot and makes your hands sweaty, but I would be pretty fed up if I had to turn the seat heating off to do so. Sometimes the wheel heating will only be on for the first 5 minutes on a cold morning, but the seat heating may stay on all day.
On the Macan there is a button on the steering wheel to control the heating, is this not possible in your case?
Ian
Evening Ian and Paul,I would agree owl heartedly
It’s a bad idea having the wheel and seat heating on a single control
In the winter on the tdi I tend to have the seat on no2 all the time but would not want the wheel on all the time
Either a physical switch the panel next the the asr switch being an obvious choice or a times set to around 5 to 8 mins for the wheel
Paul
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Thank you for this information, very helpful although it has made it a little more difficult to install. It was never going to be easy though but I think this might just need a bit more knowledge that I have right now. Some more research required I think before I continue the trials.
As you may well know, the A2s Slip Ring only has 7 available pins to utilise.
There is a 5 pin connector and a 2 pin connector.
The 5 pin connect already has 4 pins taken, 2 for the airbag and 2 for the horn.
Both pins in the 2 pin connector are taken for the MFSW buttons.
Therefore only 1 pin available for use. I have pushed 12v through this spare pin and used the already available earth pin and had the cheap aftermarket heat pad working but I do want this to be as close to OEM as possible. Mainly due to wanting to use parts that have been tested by our german friends and not something off the shelf from Amazon/eBay which may fail quickly, cause a serious problem or interfere with radio reception.
During my investigation it seems that the earlier generation A5 MFSW with the Mode button didn't come with a heated option like the latest MFSWs do.
Earlier Buttons never came with heated option for this particular steering wheel/airbag combination:
Latest style buttons which do come with an independent heating button:
Also these later style buttons with the dedicated heated wheel button have ad additional harness which I'm yet to understand what the wires provide, I could probably guess though from the colours but I take nothing for granted:
Above is a slightly different steering wheel but it clearly shows the extra 2 wires in the additional harness. The green sleeved harness with the black connector plugs into the airbag harness and is for the MFSW Infotainment buttons. The red and black connector with yellow and brown wires is the additional harness found in a heated steering wheel which goes directly to the heated wheel button shown in the above pictures. what I don't know yet is where this additional connector plugs into, either the slip ring or integrates into the yellow airbag connector then into the slip ring. If the yellow wire is a switched live and the brown is earth then I could simply use the existing earth within the steering wheel and the yellow wire through the spare pin. Sounds all so easy...
The other issue as already mentioned, these later style buttons aren't compatible with what I have fitted so I cannot simply swap the button arrangement from the right hand side of the wheel with those of the more recent generation. The next avenue to investigate is to possibly solder the heated button switch to the PCB below (where the iNAV button is as its not functional anyway) but that's definitely going beyond my capability of understanding and soldering ability.
As I said, there is not rush for this so more than happy to take my time in getting this right and most importantly; safe.
Kind regards,
Tom