Jump to content

The RennTech.org community is Member supported!  Please consider an ANNUAL donation to help keep this site operating.
Click here to Donate

Welcome to RennTech.org Community, Guest

There are many great features available to you once you register at RennTech.org
You are free to view posts here, but you must log in to reply to existing posts, or to start your own new topic. Like most online communities, there are costs involved to maintain a site like this - so we encourage our members to donate. All donations go to the costs operating and maintaining this site. We prefer that guests take part in our community and we offer a lot in return to those willing to join our corner of the Porsche world. This site is 99 percent member supported (less than 1 percent comes from advertising) - so please consider an annual donation to keep this site running.

Here are some of the features available - once you register at RennTech.org

  • View Classified Ads
  • DIY Tutorials
  • Porsche TSB Listings (limited)
  • VIN Decoder
  • Special Offers
  • OBD II P-Codes
  • Paint Codes
  • Registry
  • Videos System
  • View Reviews
  • and get rid of this welcome message

It takes just a few minutes to register, and it's FREE

Contributing Members also get these additional benefits:
(you become a Contributing Member by donating money to the operation of this site)

  • No ads - advertisements are removed
  • Access the Contributors Only Forum
  • Contributing Members Only Downloads
  • Send attachments with PMs
  • All image/file storage limits are substantially increased for all Contributing Members
  • Option Codes Lookup
  • VIN Option Lookups (limited)

MFSW with Heating retrofit problem.

Recommended Posts

2012 Cayman 2.9 PDK (RoW)

I purchased a virtually new Multi-function Steering Wheel which came from a 997-2 that the owner had swapped for a paddle shift wheel.

Fitting it was easy, and after coding the modules for multi-function, that part of it works perfectly.

My problem is getting the steering wheel heating to work.  I fitted the appropriate 'clockspring' contact unit (955.652.211.22) as the old contact unit didn't have connections for the heater wires.  PET shows the steering column module for 2012 as being the type suitable for PDK (I250) and Steering Wheel Heating (I345), so I think I am OK there.

When I code the steering column module to ‘with heated steering wheel’ I get fault codes in the module.  The fault codes I get aren’t listed in the diagnostic manuals I have, but one is for the heater switch (8041), and the other for the heater itself (8034).  I also get a fault in the PDK control module (U1810) showing a signal fault in the steering column module.   I can't clear the faults unless I ‘un-code’ the steering column module, and then I can clear all the fault codes.

Looking at Input Signals, it shows the button as permanently actuated, so it might be a bad button.  I’ve tried getting the button out, but from what I can make out, you have to strip the whole wheel, which involves prising off and re-gluing the front of it back on.  Not sure I fancy doing that right now, and I'm beginning to think about buying a pair of driving gloves.  However, I know it will nag me.

So my questions are:

Has anyone successfully done it on a 2012 Cayman?

Can anyone confirm how to get the heating button out the back of the steering wheel?


Link to comment
Share on other sites

  • 3 weeks later...

Thanks for the reply, and sorry, I should have updated this thread.  I took the wheel off and found that the signal wire from the switch to where it plugs in to the 'clockspring' is permanently grounded.  The only way to get to the internal wiring seems to be to remove the PDK switches, and prise off the front cover of the wheel.  PET shows an adhesive kit for this job, so I am reluctant to go any further.  If I end up investigating further I will update the thread again, but for now I have put it on hold.


I did fit a new switch first, and if it helps anyone in the future I can confirm that it comes out the back of the wheel.  There are two plastic tags on the switch which clip into the back of the spoke.  They are darned tight, and one broke when I removed it.  I had already bought the switch, which was about £11.00 GBP, so not hugely expensive.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.