Question about 2004 Toyota RAV4

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How to replace horns

Car horn sounds muffled

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If you could see it just remove your battery negative cable and i think its a 12,10 mill,socket you would need then unplug the wire and remove the old horns and replace them

Posted on Feb 05, 2015


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Posted on Jan 02, 2017

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SOURCE: My 99 Toyota Avalon horn does not make any sound.

save yourself the hassle , buy yourself a momentary 12volt switch drill a nice clean hole on your driversside dash and re-wire your horn to it, all the screwing around you'll do to figure out why toyota makes cheesy horn contacts you could have your problem fixed..

on one side of the switch you should run a wire that is a 12volt switched +
on the other side I would run another side run a new power wire to your horn
leave your horns stock ground and just replace the HOTLINE ..

you could even go as far as installing a la cou ca racha horn to bring back that 70's Lowrider feel lol

Posted on Jan 16, 2009

  • 37 Answers

SOURCE: 1985 Toyota Pickup Horn

Probably the switch in the steering wheel, or fuse, but usually horn fuse works other things too such as cig lighter or radio. If everything else is working fine, then to troubleshoot you'll need a testlight. I would start with the wiring harness where the steering collumn plugs in and decipher which wire is the horn wire. Put the test light clip on +power, then check the wires on the collumn side one by one, pushing the horn button on each one. The horn switch is the wire that makes the light blink when you push the button. If you try all the wires and none make the light blink, then its probably a problem with the horn switch in the s. wheel. Does it have an after market steering wheel? Because aftermarket wheels often have crappy horn switches in them. Also could be a horn relay if it has one. If you listen carfully while pushing the horn, you should hear the relay faint clicking. If you hear this, then the switch is working, but the relay might not be. Follow the sound to find it if you hear it. Test all sides of the relay with your light. Should get power constant on one term, and the other two should light when the horn button is pushed. Hope this helps. Cheers.

Posted on Feb 08, 2009

  • 1201 Answers

SOURCE: Would appreciate help for a Toyota Corolla 2007 non-working horn.

If the horn works with direct connection, and fuse, relay, and circuit breaker are all good, it's the switch in the steering wheel. If it is anything like the chrysler auto's, the switch and the air bag module is all one unit, can't replace just the switch, the whole thing, and it's about $700 to $800 for those units, at least it is here, and can only get them at a dealer.

Posted on Mar 24, 2009

  • 3600 Answers

SOURCE: When the temp is above 60 degrees the horn works.

try adjusting the screw on the side of the horn it takes a flat tip short screwdriver. Turn it out 2 turns then try it it may change the pitch a little but that should do the trick, there are reeds inside the horn and when you adjust the screw out it lets it vibrate easier. The get rusty over time and the cool temperatures makes the reed valve shrink when cool causing it not to work.

Posted on Mar 24, 2010

  • 12 Answers


pull your steering wheel horn pad and check the spring wire to make sure it's not grounded anywhere.

Posted on Mar 29, 2010

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