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I have no low beams, replaced relay bulbs, switch, And no shorts now what? Also all fuses are good

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As silly as it may sound, Have you checked to see if the low beam bulbs themselves are bad? I have seen it many of times when both low beams go at the same time. Just a thought for you. Have a great night.

Posted on Oct 03, 2009

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1 Answer

Low beam lamp(s) fault detected 2014 kenworth no low beam lights


First check light relay fuse, if ok check battery voltage at low beam light terminal, if ok replace low beam bulb, if no voltage check switch side of relay, if voltage replace relay, if no voltage check headlight low beam switch.

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Either the switch or bad wire connections at the bulbs. Scratch that - I'd be lookin at the switch.

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I have no low beam headlights. already checked bulbs, fuses, relay and dimmer switch. can you help?


Before you replace the #46 HDM relay (in the fuse block under the hood) try exchanging it with the #45 cooling fan relay and see if your low beam lights work. If they do, the HDM relay (actually solid state module, not a relay) is bad.

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No headlights working


Just low beams headlamp switch, bulbs, dimmer switch, low beam relay, fuses
just hi beams : dimmer switch, high beam relay, bulbs , fuse
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Nov 07, 2013 | 2001 Ford Taurus

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I only have high beam headlights. I have replaced the light bulbs and checked the fuses. All the other lights work.


about troubleshooting your headlights on your vehicle. I would isolate the wire that comes from the headlight switch to the headlamp bulbs for low beam and check to see if there is a short in the wire. You can find this wire by using a test light turn on the key and get a good ground with the test light poke the wire and see if the test light illuminates with the headlight switch on. ---- Also check the wires, and check the fuse for your low beams. could of blown a fuse on your lows, but your highs will still work.
Every single time I have had a failure of low beam in a headlight without failure of high beam, it has been because the lamp bulb or halogen lamp module has reached the end of its serviceable life, not because of any wiring problems. Low beam burns out first because it is on the most. If low beam is lost simultaneously in both headlights, I would check fuse first, then the headlight switch. If low beam is lost on one side only, it is almost always going to be due to the bulb or lamp module needing to be replaced. In that case, replace them in both headlights because the other one will be going kaput in short order, as well.
There is something to check. Does the low beam relay click when you turnt he low beams on?
if it does not click then
Then find the BCM at the base of the steering column. In there find the grey connector and in there, find the pink/white wire in terminal A4. Use a wire to jump that wire to ground. IF the low beams come on, then it is likely the BCM is bad.
Also check a bad wire between the fuse block and the BCM. before replacing the BCM . Start under the fuse block. This is the fuse block under the hood.
This will help. Thanks please keep updated.please do rate the solution positively .thank you for using fixya

Mar 18, 2010 | 2004 Chevrolet Cavalier

1 Answer

Low beam head lamps don't work


From cheapest/most likely to more expensive: Replace fuse; Replace bulbs; Replace DRL Relay; Check the Ground/Low beam wires for shorts or cuts, Replace Headlight control Switch. Also make sure to check the dimmer relay, its easy to tell if your relay is bad, they will buzz and get hot if defective

Jan 20, 2010 | 1998 Toyota Corolla

1 Answer

Low beam dosent work. bulb is good highbeam works cant find fuse for lights. its not underhood


Hi,
It has been because the lamp bulb or halogen lamp module has reached the end of its serviceable life, not because of any wiring problems. Low beam burns out first because it is on the most. If low beam is lost simultaneously in both headlights, I would check fuse first, then the headlight switch. If low beam is lost on one side only, it is almost always going to be due to the bulb or lamp module needing to be replaced. In that case, replace them in both headlights because the other one will be going kaput in short order, as well.
Most like the low beam filiment is bad but the high beam filiment is still good, try replacing bulb. If replacing bulb does not fix problem then you probably have voltage problems and should check the voltage reading and the plug.
OR
isolate the wire that comes from the headlight switch to the headlamp bulbs for low beam and check to see if there is a short in the wire. You can find this wire by using a test light turn on the key and get a good ground with the test light poke the wire and see if the test light illunimates with the headlight switch on.
check the wires, and check the fuse for your lowbeams. could of blown a fuse on your lows, but your highs will still work.

The fuse box is located in the engine compartment,on the driver's side. Has thumb-screw retained cover.
Thanks for contacting fixya.com

Nov 07, 2009 | Dodge Ram 1500 Cars & Trucks

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Low beam headlight is out, doesn't look like a fuse


Check the Headlight Switch. If your headlights come on automatically check the headlight sensor and its associated relay.

Mar 26, 2009 | 2000 Subaru Outback

1 Answer

Low Beam


Make sure you have a good switch
bulbs good
relay and or fuse is good

Jul 02, 2008 | 1998 Volkswagen Cabrio

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