Question about 2004 Buick Rainier

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Both high and low beam lights out at same time/fuses are ok

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Switch defective

Posted on Apr 29, 2015

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1 Answer

High beam do not work at all low beam works fine when switched to high beam no lights at all


I suggest you first check the bulbs. It isn't unusual that both bulbs fail together.
If the bulbs are ok refer to the vehicle handbook and check the fuse(s).

If those are ok it is time to move onto the supply and check it through with the aid of a wiring diagram. The fault could be a relay or the dipswitch, wiring, connections...

It is worth noting on later vehicles electrical equipment is not switched on with the light, wiper, heater switches but these merely instruct a local black box to send a signal to other black boxes to perform the desired function. In the case of problems a dedicated scan tool will be required for diagnosis.

Aug 10, 2015 | Cars & Trucks

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

I have aproblem with my Buick Allure both low beam stoped working.The high beam works OK. Checked the fuses and there OK can you help


suspect low beam head light fuse, check fuse if ok suspect that both low beam head lights are burned out ( it happens) ,if ok suspect headlight dimmer switch.

Nov 16, 2010 | Chevrolet Avalanche Cars & Trucks

1 Answer

No low beams bulbs are ok fuses look good


There may be a relay that operates the low beam lights, check the owners manual to see if there is a relay, you should be able to hear it go "click" if there is one.

Dec 26, 2009 | 2006 Hyundai Sonata

1 Answer

Low beam doesn't work


If i am correct, You have a fuse for low beams...Silly huh....... Well give it a check and you will se that you ahve fuse for high beams and low beams. Good luck.

Mar 27, 2009 | 1999 Volvo S80

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

1 Answer

2005 honda odyssey no low beam headlights


DIMMER SWICH, PROBABLY, WHICH IS INCORPERATED IN CONTROL ON STER. COLUMN?

Oct 08, 2008 | 1995 Honda Odyssey

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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