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No low beam headlights - 2007 379 - New turn signal switch - fuses good - Do headlights have a hi-lo beam relay?

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: Low beam headlights don't work

I know this is not your problem, but my low beam stopped working, both bulbs failed, no burn marks or broken element. Just had to tell someone

Posted on Mar 24, 2009

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SOURCE: 98 jeep wrangler headlights wont turn on

I would check your headlight relay switch that is located in your steering colum

Posted on May 19, 2009

cool78259
  • 228 Answers

SOURCE: parking lights turn on, headlights

If you ran a separate wire to the lights, it's not a ground problem. looks like you may have a bad switch.

or bad wire. you can use an ohm meter to check the wire from the switch to the light. a test light is

easier. test for voltage at both ends of the fuse, at the switch and the wire before the light. check the

connection at the light, sometimes the connections get corroded and voltage will not pass thru. good luck!

Posted on Feb 13, 2011

ryanlutton
  • 1150 Answers

SOURCE: 2003 envoy low beams will not work.fuses

For the I6 engine there is a relay for low beams, it's relay # 46. Switch it with relay #45 (runs the fan, same model relay) and see if your lights now come on. These 2 relays are the only 2 black ones in there (part # 15016745). Also, try to clean the contacts very well on the fuse box and the relay. If not, you may have some frayed wiring in the harness.

By the way, the high beam relay is #43, the gray one next to the windshield wiper relay #42.frontfuses.jpg

Posted on Feb 21, 2011

  • 693 Answers

SOURCE: 1998 buick century only high beams and turn

The Buick Century is equipped with a multi-switch. This switch is an all in one switch that controls your cruise control, windshield wipers and turn signals in one switch. This switch also controls dimming and brightening of your headlights. The dimmer switch is simple to replace, and all you need is a phillips head screwdriver to complete the task.

  1. Removing the Steering Column Shroud
    • Removing the dimmer switch starts at the steering column. To plan this task out, access the steering column by removing the screws holding the steering column shroud in place. This will expose the turn signal lever. Remove the lever by twisting it forward, and pulling it out of the switch.
    Removing the Dimmer Switch
    • The switch is held on by two screws and a wiring harness. The wiring harness can be removed by prying up on the locking tabs and pulling the connector out of the socket. The two screws can be removed with a phillips head screwdriver. The switch will slide out. To install a dimmer switch, be sure to repeat these steps in reverse order.

Posted on Oct 09, 2011

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1 Answer

Both low beams are out on my 2005 Murano. Relays are good.


Did you check the bulbs them self? most of the times the bulb high current filament is burnt out and need replacement.If everything is fine check the wiring, there must be an interruptions in the wires leading to the high lights.

Nov 22, 2017 | Cars & Trucks

1 Answer

2007 chev sub head lights wont turn on


Do you know anything about automotive electronics ? Electronic control modules .
Headlamp ON/OFF control is determined by the body control module (BCM) by a signal on the headlamp switch on input circuit when the headlamp switch is in the HEAD position. When the headlamp switch is in the AUTO position, the BCM determines headlamps ON/OFF by the voltage from the ambient light sensor.
If the headlight switch is left in the ON position, the inadvertent power control feature will turn OFF the headlights approximately 10 minutes after the ignition switch is turned to the OFF position. If the driver places the headlight switch in the ON position after the ignition switch has been turned OFF, or if the ignition switch is in the ACCY position, the headlights will remain ON until turned OFF or the battery runs dead.
The high beam indicator is illuminated when the instrument cluster receives a GMLAN serial data message from the BCM that the high beams are illuminated.
High Beams
The high beam headlamps receive voltage from the headlamp high relay located in the underhood fuse block. The BCM controls the relay on the headlamp high beam relay control circuit. High beam control is determined by a signal on the headlamp dimmer switch signal circuit from the multifunction switch. When the headlamp dimmer switch signal circuit is grounded, the BCM grounds the headlamp high beam relay control circuit, illuminating the high beam headlamps. The right and left high beam circuits are independent and are fused independently in the underhood fuse block.
Low Beams - Standard
The low beam headlamps receive voltage from the headlamp low beam relay located in the underhood fuse block. The BCM controls the relay on the headlamp low beam relay control circuit. Low beam control is determined by a signal on the headlamp dimmer switch signal circuit from the multifunction switch. When the headlamp dimmer switch signal circuit is open, the BCM grounds the headlamp low beam relay control circuit, illuminating the low beam headlamps. The right and left low beam circuits are independent are fused independently in the underhood fuse block.

Hooking up a factory scan tool an checking DTC'S - diagnostic trouble codes would be the very first step in trouble shooting this problem .
DTC B257A 00: Headlamp Switch Input Signal Mismatch
DTC 2575 00: Headlamp Control Circuit

Jun 30, 2017 | Cars & Trucks

1 Answer

No low beam headlights hi beam okay fuses 11, 16 okay relay hdlp lo/hid okay bulbs seem okay


Did you check low beam fuses for voltage, with headlamps on lo beam? Use a testlite to check for voltage. In the diagram you see the lo/hid relay, correct? I'm not saying the relay is faulty, you need to check voltage and ground. The bcm and dimmer switch are involved, I don't know if check for headlamp/lighting trouble codes will help? Don't replace anything unless your testing points in the direction.
no-low-beam-headlights-beam-okay-fuses-cskqpewkyt2g1jj30lipok3m-3-0.jpg

Mar 04, 2016 | 2009 Chevrolet Silverado 1500

2 Answers

No low beam headlights


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

Feb 16, 2015 | Cars & Trucks

1 Answer

Low beam Headlights out. Not the fuses or the


Hi, check the low beam relay, relay's for the headlights should be either near the fusebox, or under the engine compartment, if not this may be hi/lo beam switch, hope this helps :)

Dec 26, 2009 | 2007 Isuzu Ascender 7 Passenger

1 Answer

1997 town car, low beam head lights don't work and the high beams only works on flash pull


Try headlight relay, could be fuse as headlight flash is on different circuit i think, or could be hi-lo beam switch, good luck

Dec 24, 2009 | 1990 Lincoln Town Car

1 Answer

My headlights will not turn on


could be either headlight switch or hi-lo beam switch. ck all fuses first.

Oct 02, 2009 | 2000 Mercury Cougar

1 Answer

2002 Pontiac Grand Prix GT headlights no power


clean the computer lead interface. my buddies car did the same thing, we cleaned the computer leads with a good eletronic spray cleaner and it fixed the problem.

Sep 13, 2009 | 2002 Pontiac Grand Prix

1 Answer

I have a 1998 Chevrolet K2500 that the headlights are not working correctly on. When I turn the headlights on nothing comes on unless I turn on the high beams, only the high beams are on, no low beams. ...


Somehow the tan wire from the low beams has been cut from the hi/lo switch and is now attached to the brown wire from the headlight switch. Trace the tan wire from the headlights to the hi/lo switch to see what happened.

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Aug 11, 2017 | 1998 Chevrolet K2500

2 Answers

Low beam Headlights do not work, however highbeams will work if i pull the turn signal level backwards


look at your lo beam relay. Lo beam and Hi beamlights are on seperate relays

Jul 21, 2008 | 2000 Mercury Cougar

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