Question about 2002 Toyota Tacoma

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Horn/lights on 2002 Toyota Tacoma

I have an intermittant problems with my 2002 Toyota Tacoma Extended Cab. Sometimes the horn will blare on the truck unexpectedly, but only when the lights are on. The horn will stop when I shut off the lights; this is a problem when I am driving at night. As a stopgap measure I simply removed the fuse for the horn. The dealership cannot reproduce the problem. Any thoughts?

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  • Anonymous Mar 13, 2014

    2002 toyota tacoma radio stopped working

  • Anonymous Mar 13, 2014

    2002 toyota tacoma radio stopped working

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Rewire your horn from the steering wheel to the horn. Its not difficult, I can't tell you how to take the steering wheel apart but you can get a Haynes Repair Manual. It'll have all you need and more. You can use speaker wire, split it in two. Run one cable from the positive in the battery to the horn switch in the steering wheel. Another from the switch to the horn. You have a short somewhere, to me is easier just to run new wires than to find the short-circuit. Make sure when you run the cables through the firewall you run through a grommet so it does not get damaged by metal. Before anything check your headlight wires that they are not touching the horn.

Posted on May 18, 2009

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1- The HORN fuse is located in the fuse panel on the driver's side under the engine hood. Of course, if it is "blown" replace with the SAME size or smaller and retest the horn.
2- Verify the horn itself (isolated) using one wire attached to the Main Battery + (POSITIVE) to the spade terminal on the horn. The horn can be accessed after carefully unclipping the fasteners connecting the front grill to the radiator area- just be careful- work slowly. The horn is naturally grounded to the vehicle frame.
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It is probably trying to pay you back for slamming your fist into it....You have to be nice to cars sometimes to get them to cooperate...You know, pet them on the end of the hood and tell them what good cars they are? :)

Anyway, your problem is most likely being caused by a bad clockspring assembly in the steering column. This can also cause your airbag warning lamp to come on. If the airbag light is on, this is almost guaranteed to be the problem. A cracked circuit strip inside a clockspring assembly can expand and contract with temperature changes and cause things to short out. If the clockspring is not the problem then the airbagassembly could be shorting internally. I wouldn't recommend beating it with your fist anymore unless you want the airbag to deploy in your face.

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