Horn, cruise control, and radio controls on steering wheel do not work ?

Was Cruise Control working before the New Horn was installed? The power supply to the Horn, (input to ground wire) is connected to the Cruise Control Module (CCM). This CCM is wired to the Relay Switch Box located in the Engine Bay. The Relay Box cover will have a Chart indicating what function each Relay coresponds to. Your local autoparts store (AutoZone) can test the Relay Switch, and you'll know (if any Relay) need to be replaced.

The CCM is also wired to the Steering Wheel, but first passes through the Clock Spring Coil, located just behind the Steering Wheel. The Clock Spring allowes for the Function Buttons on the Steering Wheel to have power while Steering Wheel spins.

The Clock Spring can malfunction or break, its rare, but this will cut power to the Function Buttons on Steering Wheel. If ALL the buttons on Steering Wheel dont work, then the Clock Spring is the Culprit. The Coil may need to be replaced.

The Cruise Control Module itself may have failed and also would cause a few or all Steering Wheel Functions to quit working.

But first check the Relay Switch Box and examine the Harness Cables connecting (Steering Wheel--to--CCM--to--Relay Switch Box--to--Battery Supply).

Also if Cruise Control was working before the new Horn was installed and now not working, then most likely the Problem is a bad wire connection somewhere and/or is a faulty Relay.

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Steering wheel radio controls and horn not working - Jeep Wrangler ...

www.wranglerforum.com/.../steering-wheel-radio-controls-and-horn-not...

Sep 22, 2014 - 12 posts - ‎6 authors
... 2Dr sport and my step/reset buttons, radio control and horn all stopped working. ... Also the lights behind the step/reset and cruise control went out, but the ... Soundslike a bad clock spring ribbon cable in the steering wheel. steering wheel buttons not working
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Jun 14, 2012
Steering wheel audio controls
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Most likely a broken wire in steering wheel

I had the same symptom on my 97' grand voyager. replaced the clock spring and my air bag light turned off, the horn worked and the cruse worked. found one at local auto parts for about 50 bucks.

There is a wire harness in the steering column called a CLOCK SPRING. Replace it.

Hi, assuming you have cruise controls on the steering wheel, I would say your clockspring has failed. The contacts for the horn must be crossed with the cruise contacts. Replacement requires removal of the steering wheel (special tool) and airbag, etc. Please let me know if you would like instructions.

TO REMOVE CRUISE CONTROL SWITCH. FIRST TURN OFF RADIO TO KEEP FROM LOSING CODE. DISARM AIRBAG IN THE STEERING WHEEL BY REMOVING NEGATIVE BATTERY CABLE WAIT 20 MINUTES FOR AIRBAG TO DISCHARGE BEFORE REMOVING AIRBAG AND HORN PAD IN STEERING WHEEL.ONCE AIRBAG IN STEERING WHEEL OUT.YOU CAN REMOVE THE CRUISE CONTROL SWITCH.BECAREFUL REMOVING AIRBAG IN STEERING WHEEL CARRY IT AWAY FROM BODY WITH AIRBAG HORN PAD POINTING UP.IF YOU DROP IT.DONT PUT IN BACK IN STEERING COULD DEPLOY ON INSTALLATION.

Your issue is most likely the clock spring which is part of the air bag system.

All of the signals controlling these functions are routed through the clock spring.

Should cost around 200-300 to have it done, or more like 100-150 if you do it yourself. You must know what you are doing though as the airbag system is not to be taken lightly.

sounds like a bad clockspring. located in steering column under steering wheel, operates airbag, horn cruise etc, it make wire connection possible so the wheel can spin, its a roll of flat wires, that unroll and roll up as steering wheel is truned from left to right,wires break after a while.

Replace the Clock spring. It is mounted behind steering wheel. It alows electrical connection while the wheel turns.