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Is there a Relay switch?

I Installed new High Beam x 2. My Low Beam Work a OK.My Fuses are Ok

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  • Cars & Trucks Master
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I would suspect the high beam switch is defective.

Posted on Apr 20, 2017

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2008 ford ranger headlight relay bad? Lamps do not light up, checked BULBS..OK no left highbeam Left and right lamp fuses ok and hi/lo 30a fuse ok


Did you check the fuse circuit for voltage, use a testlite or something.
I posted part of headlamp wiring. You understand your dimmer switch is involved in the circuits.
2008-ford-ranger-headlight-relay-tigo4fxke2krqgp04tlk3h2i-1-0.jpg

Oct 22, 2016 | 2008 Ford Ranger

1 Answer

When I started my 05 Toyota Camry one night two weeks ago, for the first time my high beams would not go on, what could be the issue, and how can I fix it?


1. Check the fuses for the high beam circuit. There is usually one fuse for the left and one for the right high beam.

2. If the fuses are OK, check the Relay (also normally found in the Fuse and Relay boxes ) for the high beam circuit.
There is normally one Relay for the Low Beam circuit and one Relay for the High beam circuit.

3. If the fuses and relays check out OK, there may be a problem with the high beam switch on your headlight controls.

Dec 27, 2015 | 2005 Toyota Camry LE

3 Answers

I have a 2006 ford escape and the passenger head light low beam will not work. Tried replacing the bulb, and check fuses nothing is working.. what else can I try?


Both your low beam and your high beam is protected by the same fuse, so it makes sense that the fuse is OK if the high beam is working on the passenger side. There are 3 fuses for the headlamps. Fuse #13 in the Battery Junction Box (20 Amp). If this fuse is blown, the headlamp relay will not have any power and neither high nor low beam on either side will work (you will have no headlamps at all) Then there is Fuses #2 and #3 (15 Amp) in the Battery Junction Box. #2 goes to the left low and high beam and #3 goes to the right low and high beam.
The headlamp switch uses a SINGLE CIRCUIT to control BOTH sides at the same time, so if one side works, the switch cannot be the problem. The headlamp relay provides power for fuses #2 and #3 and we already ascertained that these fuses must have power since we have working lights on both sides, so the relay cannot be the problem. A replacement bulb has already been tried, so that pretty much leaves us with a bad lamp socket. (Most likely cause) or a bad connection at splice #S122, which is located in the main wiring harness near the breakout for the left headlamp. (RED/BLACK wire)

May 16, 2011 | 2003 Ford Escape

1 Answer

My low beams don't not work, only high beam. All other lights works fine. Problem started without any known issue. They were working just fine two nights ago. Where should I start? Is there a fuse or relay...


on a lot of vehicles theres a fuse for low and high beam headlights. could be a relay also. check the fuses in the fuse box. if both headlights have been changed and the fuses or relay are ok, then the problem is either in wiring or a bad dimmer switch. have a good day !!

Jan 27, 2011 | Dodge Dakota Cars & Trucks

2 Answers

The low beam lights do not work I have tried a new bulb and replacing the fuses. the high beam lights do work


You may have to check a few items here. Do the high beam lights only work when you "flash" from the combination stalk or do they work when you have headlight switch turned on and then select high beam from stalk..? You may also want to check out the headlight relay. If this is OK, you might have a headlight switch issue or the combination stalk may be faulty.

Feb 28, 2010 | 1984 Porsche 944

1 Answer

Low Beam headlights don't work. High Beam work fine and diriving lights work as well.


hi from uk provided you have checked bulbs are ok? then this fault may be the relay for the low /dipped beam has gone faulty if you check h/book you may find location of low beam relay there is relay for high and one for low beams if you find both relays ? try switching? this will confirm relay fault if you then have low beam but no high ? b4 you buy new relay other than tis the other possible fault may be the actual di/high beam stick control ?

Nov 09, 2009 | 1998 GMC Sierra

1 Answer

My headlights dont work,.all other lights are fine though,.is it the fuses or the bulbs? im not sure what fuses they would be,.there seem to be different ones for the same thing


do your flash to pass lamps light when you pull the stalk towards you? If yes, the bulbs are ok.
Do the hig beams work?
Your headlamps have sepaerate fuses for each headlamp and you have a low beam relay and a high beam relay under the hood in the black box.
If everything is out, I suspect a bad headlamp switch.
Check car-part.com and look on page with * for cheapest price.

Your owner manual will identify fuses & relays.

PS, You did not recently instal high current bulbs did you? If yes, put originals back in.

HEADLAMPS

The voltage is supplied to the lamp switch through a fuse. This fuse is located in the central junction box in the left-hand footwell.
When the headlamps are switched on, a voltage is supplied to the high beam/low beam switch and to the low beam relay. The relay for the low beam is located in the battery junction box (BJB) in the engine compartment.
If the high beam/low beam switch is set to "low beam", then a voltage is supplied through the low beam relay to the low beam part of the headlamp assembly. The left and right-hand low beams are fused separately. The fuses are located in the battery junction box (BJB) in the engine compartment.
If the high beam/low beam switch is set to "high beam", then a voltage is supplied through the high beam relay to the high beam part of the headlamp assembly. The left and right-hand high beams are fused separately. The fuses are located in the battery junction box (BJB) in the engine compartment.

----------------------------------------------------------------------------------------------------------
Lamp Switch
Removal
  1. s2y~us~en~file=ani_caut.gif~gen~ref.gif CAUTION: Disconnect the battery ground cable. For additional information, refer to Section 414-01 .
    Remove the lower driver's side footwell trim.
  1. Detach the lamp switch bezel.
    • Remove two screws.
  1. Remove the light switch.
    • Remove three screws.
    • Disconnect the electrical connector

Feb 23, 2009 | 2005 Ford Focus

4 Answers

Low beam headlights do not work, but high beam headlights do


Clyde,

I've been troubleshooting this same problem on a different vehicle this week, and I can give you the steps I'd take.

1. If both sides went out at the same time, the problem is *NOT* likely to be the bulbs.

2. Check the fuses to see if both low beam lights are on the same fuse. Many cars have one fuse for low beam and another for high beam, so both lights out at the same time typically means fuse blown.

3. If the headlights are OK and the fuses are OK, then the problem is *LIKELY* the headlight switch. In my case, AutoZone has one and it can be installed easily; but in your case, that may not be as simple.

Please post your findings or comments.

Jul 16, 2008 | 1991 Nissan Pickup

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