Jdfern
SILVER Star
Ok, good luck.
Horn issues
- Thread starter sseaman
- Start date
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Quick update for anyone that runs into this issue.
I don't know which fixed it, but I reseated both the connector right at the horn as well as the horn relay. I had checked the fuse first (and it was fine), but didn't see that there was a relay for it as well and if you do some reading elsewhere (such as here or here), you might think you can't remove it (perhaps only after 2003?).
I don't know which fixed it, but I reseated both the connector right at the horn as well as the horn relay. I had checked the fuse first (and it was fine), but didn't see that there was a relay for it as well and if you do some reading elsewhere (such as here or here), you might think you can't remove it (perhaps only after 2003?).
As always, you all saved me some grief, time and dough. My 99 LX's horn stopped working. I had an extra horn relay laying around, so I switched it and it worked and stopped again. So, after reading this thread, I tried the panic button and the horn went off. So, I figured/hoped it was just a grounding issue. So, I went through the diagnostic process that you all laid out. Ultimately, it was a grounding issue. As I was diagnosing the voltage, it was coming and going, I tested it in different places in the steering wheel and shaft and ultimately found a good solid place to add a new ground wire and to a chassis bolt/nut. It works great now. Always appreciate it!
If you think you have a grounding issue, this is a fast and easy way. Just pop the left plastic cover of steering wheel and ground it (I used the door hinge bolt as it was just easy to alligator clip both ends).
You will know the last wire (right) black wire is the horn positive line...cause its easy to trace the horn connection clip to this.
Tested this ground looking wire (black and white)...wasn't connecting to anything except two metal pieces and had a good consistent 12v.
Left some slacks in the new ground wire for up/down and in/out tilting so it doesn't get kinked. This part of steering wheel is not affected by turning of steering wheel.
If you think you have a grounding issue, this is a fast and easy way. Just pop the left plastic cover of steering wheel and ground it (I used the door hinge bolt as it was just easy to alligator clip both ends).
You will know the last wire (right) black wire is the horn positive line...cause its easy to trace the horn connection clip to this.
Tested this ground looking wire (black and white)...wasn't connecting to anything except two metal pieces and had a good consistent 12v.
Left some slacks in the new ground wire for up/down and in/out tilting so it doesn't get kinked. This part of steering wheel is not affected by turning of steering wheel.
May be the same as the first gen tundras. The ground for the horn switch came up the column through the steering column bearings. To be clear- This was the ground path traveling through the metal of the column and bearings, not a physical ground wire traveling up the column.
I had seen a few tundras where the horn operation became intermittent after driving for a while. The column bearings looked like old rusty grease of sorts. I was able to clean the bearings in place by washing them out with brake clean and injecting grease into them while turning the wheel back and forth. Again this was on first gen tundras, with few hundered thousand miles.
I had seen a few tundras where the horn operation became intermittent after driving for a while. The column bearings looked like old rusty grease of sorts. I was able to clean the bearings in place by washing them out with brake clean and injecting grease into them while turning the wheel back and forth. Again this was on first gen tundras, with few hundered thousand miles.
