I fixed my horn as in a previous post and now my right high beam flickers when I have it on. I flash people and my left one flashes not my right.. When u have them on while driving it cuts in and out and if I beep my horn it cuts the high beam off..


Help!!!!!!

Checked fuses and relay and all fine there... Didn't wanna buy a globe and for that not to fix it...

What model 3rd Gen? If dual headlights, do both the inner dedicated HB and dual-filament HB flicker together? On the TH/TJ there are two relays, one looking after the inner dedicated HB globes via a 10A fuse for each, and a separate relay powering the outer dual-filament HB/LB globes via a 15A fuse for each. Try swapping the relays over, does the fault swap sides? Can't see how the horn could be involved, doesn't seem to be much circuitry in common that I can see from the diagrams.

2004 tl. Yeah checked all fuses and they are fine. Took relay out and changed for trial and still that side. The tl has a different glove for.high beams cause I thought it might be all the same one globe. Yeah well me neither. I replaced the relay for the horn with a newbie and replaced the horn with a new one and been happening just before I did that.. To me it seems like.when I push the horn it is drawing current from somewhere cause the light dies. I took the relay out the horn and pushed it and the light didn't die but still flickered on and off just by turning the light on.

I think they are completely unrelated matt.

Had a look in the workshop manual, headlights are on a completely different circuit to horn.


Have you tested your battery? Is your alternator charging? Maybe when the lights are on and you push the horn it causes a voltage drop meanig the lights flicker and turn off??

na see i find it weird. both parkers work, both normal head lights work and my passenger side high beam works. my drivers high beam does too just flickers on and off but when i beep my horn it cuts right off than slowly turns back on.

So to me, that sounds like the car cant supply the light with enough current with the horn sounding? I would be checkig your battery and the operation of your alternator. If youre unsure, sing out

yeah but wouldnt that affect more than just one globe? even if the horn isnt pushed the light still cuts in and out.....

Obviously the obvious, but what happens when you swap the globes over (LHS and RHS highbeam globes). Maybe try spraying some contact cleaner on the headlight connectors.

Didn't try that might give it a.shot.

Might be a bad earth there somewhere. Has anyone done some rewiring for a new stereo or driving lights and done some dodgy connections?? Vee

Na..the only thing I've changed is the cluster but that was ages ago

Matt, you have a TL so the outer light has H4 bulbs which are dual filament which means it switches over to the highbeam so as a result, you should have 4 highbeams. Now, when you say right highbeam, I presume drivers side, if so, as Ensoniq5 said, does the outer highbeam also flicker?

Low Beam:
http://i856.photobucket.com/albums/ab124/vbednikov/mycar/low-beam_zps6d872f1e.jpg

High Beam:
http://i856.photobucket.com/albums/ab124/vbednikov/mycar/high-beam_zpsbf56154f.jpg

flicker...bad earth ,dodgy connection,buggered globe....

Not really sure if it does. It just seems to cut out. I'm thinking might try a new globe, but.does that explain why when I press the horn it cuts out?

Not sure. Can try with the car one and idling, switch just the high beams on and with a door open, try to lock with the remote. This should sound the horn and you can then see which one is acting up. Also, you get someone to turn on/off highbeam (while the lowbeam is on) to see what is happening.

The only other thing I can think of, and it's a long shot, is that the HB filament is broken but just hanging in there, and the vibrations from the horn are jiggling the filament about. I'd be looking at the globe on this, there doesn't seem to be any circuit-related fault that could cause this if the fuses and relays are ok.

Ok.... I changed globe from other side and still didn't work, changed main head globe and high beam still didn't work, changed relay and didn't work. The high beam globe looks like it has a broken piece but still holding on so not sure if that's the issue.... Ggggrrrrrrrr

Ok replaced relay, replaced globe and still doesn't work... Beep horn and it cuts in and out, have high beam on and it cuts in and out.... Out of ideas people....

For clarity: you have four globes. The two outer ones are double filament (HB and LB), the two inner ones are single filament (HB only). So when your HBs are on, you should have 4 bright lights. Can you confirm if both inner and outer globes on one side fail or flicker together, or is only 1 out of the 4 globes affected? (see Vlad's post above with the photos of the headlights).

Anyway, if you've swapped all globes it doesn't sound like that's where the problem is. I dunno... maybe bad connection at the steering column? Does anyone know if the horn and indicator/lights stalk share a connector?

i can check the wiring diagram tonight.

the other thing is if the filament is dangling, it might cause an internal short.

Matt, as Ensoniq5 pointed out and I showed with pics and Ensoniq pointed out again, you have 2 sets of high beams. One set of dedicated one which are between the indicators and the main beams on both sides. These have 2 prongs and from memory H3 bulbs. The main beam has 3 pronged H4 bulbs, one prong is the earth, one is low beam and one is high beam. Notice in my pic, when the high beam is switched on, the dedicated one lights up and the main one becomes brighter.

Questions:
1. Does the H4 high beam flicker/cut out at the same time as the dedicated H3?
2. When you swapped the bulbs, did the issue go with the bulb or remain on the same side?

The what dangerling.... When u pull the lever the whole lights die on the right side...

The what dangerling.... When u pull the lever the whole lights die on the right side...

Don't worry about the dangling. You said there were pieces broken. Is there one that is hanging on and touching the other filament?
So your answer to question 1 is that both the dedicated and the dual filament high beams cut out?
Also, you did not answer question 2. When you swapped the bulbs, did the issue go with the bulb or remain on the right side and by right side do you mean drivers side?

Remained on the same side and now every light seems fine as in no broken pieces but still not working.

the only thing I've changed is the cluster but that was ages ago
Any chance you nipped a wire when you changed the cluster and it finally wore the plastic sheath thru and now shorts when you hit the horn switch or there is a loose earth in the dash cluster area??

both parkers work, both normal head lights work and my passenger side high beam works. my drivers high beam does too just flickers on and off but when i beep my horn it cuts right off than slowly turns back on.


Had a Camry once that the engine would cut if you tooted the horn or put the left indicator on.......quite dangerous!! Turned out a bad earth up under the front grill and somehow the EFI computer got a short or power surge and shutdown!! Tightened the earth bolt and fixed for life!!
Someone missed it on the production line!! Vee

It only affects the one light. And an changed cluster like over 7 months ago

If your light goes out everytime you toot the horn there will be a link there somewhere for sure.
7 months would be ample time for vibrations on a nipped wire to wear thru the plastic coating.
Does the horn work at full loudness indicating it is getting full current it needs?? Vee

so you are saying only the dedicated highbeam cuts out and not the outer dual filament one? can you verify with some else that the main beam changes intensity or not (if low beams are on) or come on at all (when low beams are off)

Has this only happened since you replaced the horn a while back??
Did you do any rewiring or splicing back then for the new horn?? Is the horn relay the correct one you replaced? Vee

Have you swapped the Horn relay and Headlight Hi relays around by chance?? They might be different. Vee

There is a common ground wire in the area behind the driverside headlights check that? Grounds that part of the harness there where the horn and that light feed from.
Look in the manual and all ground points are listed starting at page 1072 in the one i downloaded. Vee