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Thread: Intermittent horn / CC buttons - rotary coupler ("clock spring")?

  1. #1
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    Intermittent horn / CC buttons - rotary coupler ("clock spring")?

    The horn doesn't always work on my D4 (2011 HSE). And I think the cruise control buttons sometimes do same.

    Reading this thread Horn stopped working, then started again and Facebook group pages, the suggestion is it's probably the rotary coupler or "clock spring" at the back of the steering wheel.
    It all seems to come good once I've turned the wheel a few times.
    And perhaps unrelated, but I do get a slight whine - not quite a squeal - from the steering wheel on low speed 90 degree turns, like it needs a lube or something.

    Is it an easy and cheap fix, or a complete PITA to sort it out?
    If at first you don't succeed, that's one data point. - xkcd
    ----------------------------------------------------------------------
    2011 Discovery 4 SDV6 HSE

  2. #2
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    Intermittent horn / CC buttons - rotary coupler ("clock spring")?

    I had a similar problem with my volume buttons doing the opposite than requested. It’s to do with the connectors from the wheel to the clock spring getting a little tarnished over time and the various resistances that correspond to the buttons being out of spec. In my case simply using a electronic contact cleaner and lubricant resolved it. It might be the same for you.

    Removing the airbag requires either buying the removal tool or making one. I fashioned my own from some stiff wire with the right end on it.
    2010 TDV6 3.0L Discovery 4 HSE
    2007 Audi RS4 (B7)

  3. #3
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    Quote Originally Posted by DiscoJeffster View Post

    Removing the airbag requires either buying the removal tool or making one. I fashioned my own from some stiff wire with the right end on it.
    I adapted my tool from a cheap door card / sound system tools. They often come with hooks and levers that will do the trick.

    I don’t know if the D4 and D3 clock spring / looms are different or not but I have a spare used D3 spring and 2 x looms if you want to try them

  4. #4
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    Cheers all for the advice. I'll see how it progresses from here. So far today it's been okay.
    If at first you don't succeed, that's one data point. - xkcd
    ----------------------------------------------------------------------
    2011 Discovery 4 SDV6 HSE

  5. #5
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    Quote Originally Posted by Redtail View Post
    ………………………..
    And perhaps unrelated, but I do get a slight whine - not quite a squeal - from the steering wheel on low speed 90 degree turns, like it needs a lube or something.

    Is it an easy and cheap fix, or a complete PITA to sort it out?
    Yes, what is that noise, I get it too? I also thought it would disappear when the clock spring was changed, due to bringing up an airbag fault IIRC, but it didn't.
    2005 D3 TDV6 Present
    1999 D2 TD5 Gone

  6. #6
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    Quote Originally Posted by Redtail View Post
    And perhaps unrelated, but I do get a slight whine - not quite a squeal - from the steering wheel on low speed 90 degree turns, like it needs a lube or something.
    When you say 90 degrees, are you trying to turn the car 90 degrees or have you rotated the wheel 90 degrees?

    To clarify, are you at the end of the rack (maximum lock)?

  7. #7
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    Quote Originally Posted by BradC View Post
    When you say 90 degrees, are you trying to turn the car 90 degrees or have you rotated the wheel 90 degrees?

    To clarify, are you at the end of the rack (maximum lock)?
    On slow, regular left or right hand turns. Nowhere near full lock.
    If at first you don't succeed, that's one data point. - xkcd
    ----------------------------------------------------------------------
    2011 Discovery 4 SDV6 HSE

  8. #8
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    Quote Originally Posted by Redtail View Post
    The horn doesn't always work on my D4 (2011 HSE). And I think the cruise control buttons sometimes do same...…...
    I also thought I'd noticed the CC buttons not working once or twice, I've since discovered they don't work in Sand Mode or pro'ly any off road programme for good reason. However earlier tonight I had to use the buttons in a panicky fashion after a clown in front of me slowed down after some roadworks, and then they wouldn't work again, even after playing with them for a few k's, but after re-starting the car they work fine, so I think I just confused the computer.
    Last edited by RANDLOVER; 21st April 2020 at 12:40 AM. Reason: Expansion
    2005 D3 TDV6 Present
    1999 D2 TD5 Gone

  9. #9
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    Connector will be slightly unseated in the steering wheel.
    Cheers
    Tombie

    AULRO Holiday Reward Points Winner!

  10. #10
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    I’ve been through this. In case you aren’t aware, every button press on the wheel is a corresponding resistance value and the ECU reads this resistance value and based on that, does the prescribed action. When the connectors get a bit stale and slightly tarnished with age, some button presses can crossover or not correspond at all. For example, my volume up became down and cruise cancel wouldn’t work, and horn wouldn’t go. Taking off the airbag and using a contact cleaner/lubricant I n the connectors brought it back to life and normality. There are a couple of tiny connectors under there that need some tlc.
    2010 TDV6 3.0L Discovery 4 HSE
    2007 Audi RS4 (B7)

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