SRS module and Multi function steering wheel

Tiny
SHMOOTER
  • MEMBER
  • 2001 HOLDEN UTE
  • 206,000 MILES
I have no electronic functions from the steering wheel including the horn. Not able to control radio ( which is after market model). No cruise control, and no Mode control for speedo etc.

The steering wheel centre feels hollow where I presume the air bag would be located.
I'm sorry I cannot be more detailed about this but happy to answer any questions related to it to help with a solution for me.

Have been told it could cost anything up to $1,600 to repair! AAARGH Help.

Cheers
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Monday, August 5th, 2013 AT 10:48 PM

4 Replies

Tiny
CARADIODOC
  • EXPERT
Multiple dead circuits all related to the steering wheel typically have one thing in common. That is the clock spring. That's a wound-up ribbon cable in a plastic housing right under the steering wheel. It's common for that ribbon cable to break.
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Tuesday, August 6th, 2013 AT 11:17 AM
Tiny
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Hey Caradiodoc, thanks for your reply,

any idea where I go from here if that is indeed the case?

Cheers
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Tuesday, August 6th, 2013 AT 1:24 PM
Tiny
CARADIODOC
  • EXPERT
Normally, based on the symptoms, I just replace the clock spring without doing any tests because it is so common. There are two different electronic systems that can be used. Typically the horn, cruise control, and air bag use individual circuits. As the ribbon cable starts to break, one of those circuits will fail first. Most people notice the "Air Bag" light turn on or the cruise control stops working. That is followed by a failure of the second system days or weeks later when the ribbon cable breaks further.

With the other, less-common system, all the circuits share a few wires in the ribbon cable. Each button produces a different voltage signal so a computer can figure out which button you're pressing. When a wire breaks, all the systems will fail at the same time including radio controls and anything else on the steering wheel. Typically the air bag initiator circuit will still have its own wires and if those haven't broken yet the air bag light won't be on.
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Wednesday, August 7th, 2013 AT 11:46 AM
Tiny
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  • MEMBER
Thanks again mate, that would confirm one or two other things that I have been told and especially regarding the air bag. The general feeling is that someone disconnected the air bag because the light was bugging them. Seems to me they butchered a good working system for nothing really.

OK, well once again thank you. Now I need to figure out if I should go ahead and replace that clock spring and be done with it.

Cheers
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Wednesday, August 7th, 2013 AT 1:43 PM

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