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The fourth generation Nissan Altima (chassis model L32A) was announced at the 2006 New York Auto Show on April 12, 2006. It was the first vehicle to use the smaller Nissan D platform, with a new front and upgraded rear suspension.

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How can I find out why none of the buttons on my steering wheel work?

None of the buttons on my steering wheel are working, including the horn! But when the car alarm is triggered the horn goes off, so I know it works. How can I find out what’s wrong and try to fix it myself? Ignition button to the side of steering wheel works fine, wipers & blinkers work too, just no buttons!

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Hi @mkladywendy ,

There may be a problem in the wiring harness connections between the steering switches and the radio, possibly near the steering column, maybe harness connector M88 (see horn information below).

Here’s a link to the 2010 Nissan Altima – Audio, Visual & Navigation System section of the repair manual. (you didn’t state the year model or the vehicle type in your question so hopefully this is the same for your year model).

It describes in detail the procedure for testing the functions of the audio system. This includes the steering wheel switches. Start on p.AV-34

With regards to the horn connection from the steering wheel, the horn button is wired to the IPDM E/R (Integrated Power Distribution Module - Engine room) CPU. When the button is operated it is the electronics in the IPDM that operates the horn.

Here’s an image showing the horn circuit from the steering wheel. You will notice that it also goes through harness connector M88 as does the steering wheel switches so perhaps it may be worthwhile checking this connector first. It may have come loose.

Block Image

(click on image to enlarge for better viewing)

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Thank you, I’ll try to look at this connection and see if it helps.


I have the same issue but only with the horn and bottoms on the steering wheel for my 370z any solutions?


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A clock spring makes all the connections between wheel and car. You will need to remove the steering wheel. I don't know much else but I think chrisfix has a video about it

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looks like a bad bad clockspring

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Wendy Lyons wird auf ewig dankbar sein.

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