The horn, heated seats, cruise control and the volume buttons on the steering wheel do not work. I took my car in for the 100,000 mile checkup and the above were half the problems I have encountered since we got the car back. When we took the car in, everything was fine, since, in addition to the above, the engine light has come on, the DVD player does not work as well as the above. This is all within 1.5 months.
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Re: Parts not working
Mcdevito75 here, There is a device under the steering wheel that can cause these problems, specially if your horn now does not work, have ypour shop check out this part. I forget it"s name but location is under the steering wheel.
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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.
There is a device called a "clock spring" inside the steering wheel/column. It contains all the various wires to the buttons on the steering wheel. Sometimes these clock springs that wind and unwind every time the steering wheel is used simply wear out or break causing the problem you cite - no electricity gets to the buttons on the steering whell. Replacing the "clock spring" is mildly expensive. Parts and labor about 400-500 bucks.
long story short, your car problem is, the spiral cable is braking up.
it fits under the steering wheel,
spiral cable is the part that connect the moving side (steering wheel)function buttons, horn, air bag, to the fixed side (car electric loom).
The clockspring (AKA Contact Assembly or spiral cable) under the steering wheel is most likely broken. The clockspring is what makes the connection between the horn button and cruise control buttons in your steering wheel and the main wiring harness. (you have to have a flexible circuit so you can turn your steering wheel around in circles) The cockspring assembly also contains the circuit for the driver's airbag. If your AIRBAG light on your dash is on, this is most likely why. The steering wheel must be remove to fix it. The airbag system has to be disarmed before any work should be done to the steering column.
AllData shows a dealer list price of $77.71 and a standard labor time required to replace the clock spring at 1.0 hours.
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.