Question about 1998 Toyota Sienna

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Horn button on 98 Sienna

The horn button requires a strong push, if it works at all. Is there something I need to do with the contacts to solve this. I tried cleaning them once, but this only helped for a short time. The problem is in the button not downstream.

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  • barayetest Feb 07, 2009

    I also have a Toyota Sienna 1998.The horn on the steering wheel does work when pushed down, but the horn is O.K., how can I fix it? If press hard on the steering wheel horn pad every now and then it works.



  • Toyota Ed May 11, 2010

    The contacts close when the horn button is "pushed"; creating a grounded circuit that applies the horn relay. What I would do would be grounding the horn pad wire with the wire disconnected from the horn pad. If the horn blows good each time you ground the wire itself, I would look to see as to why the contacts are not making a good ground. Please feel free to respond back if you have any questions.



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I just took a look into my steering wheel horn set up.
It is defective design. Only one of the two contact plates are connected. The ground from the spiral cable is not used for the horn. I can fix the first part, but the latter part will need a consult with Toyota service dept or HQ. If you have the same problem, let Toyota and know about the problem. I've read a lot of fixes that didn't work. The normal suspects on the horn are: relay, horn (use the alarm to check or by pass the relay), spiral cable, contact plate, but my new one is that one of the contact plate is not connected and ground from spiral cable is not used for the horn. Just indirect contact from the steering shaft. You need to know haw to remove the air bag to look at that area.

Posted on May 26, 2009


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if it was a fuse problem the horn wouldn`t make a sounds like the horn contacts that touch when you push on the button are not making proper contact each time.if you remove the horn button and look at the contact spots you may see the problem(uneven contact surfaces).if you move/bend the contact surfaces closer to each other of straighten this may help the may even have a horn that needs to be replaced as you said when it does work it stutters and not blow.the diaphragm in the horn can dry out and not vibrate like it should.try tapping on the horn when someone tries to blow the horn if it stops or gets louder then the diaphragm is no could also check the connection at the horn itself it may have a bad connection due to corrosion and just need cleaning.

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No horn in if the wheel is in straight position, but if turn the wheel left or right it working.

I am no expert but had a similiar problem with my camry and am starting to have the problem with my Sienna. Inside the steering wheel is a metal ring that supplies power to the horn, turn signals, cruise control (if equipped), etc. This way you have power to these switches even when you turn.

It seems that the top of the ring is worn or dirty thus causing the contacts not to conduct electricity to the horn. In my camry I had to have the ring replaced.

Now for the not so good news. The work needs to be done by a certified technician. This is because of the airbag. Once you take the steering wheel apart you need to be able to reset the airbag or your airbag may not work. Due to federal safety regulations they require a certified technician or special tool or something to do this. My neighbor who is a mechanic told me I would have to take it in to get it done.

I do not rememer what the cost was.

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If this vehicle has an air bag in the steering wheel make sure to deactivate the airbag circuit before pulling the steering wheel.

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