Question about 1998 Toyota 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.
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 nhtsa.dot.gov 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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Posted on Jan 02, 2017
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