In a car that has been around for a while there is always the possibility of corrosion, or vibration created failures in the wiring or insulation. A test light or volt ohm meter would be helpful to determine that the voltage is reaching the led or light bulbs. If not then jumper the voltage from battery to light. It should illuminate. If it does not then the ground side is open. You will need to trace the wiring to the car frame. If the jumper voltage lights the lamp then trace the wiring back from the bulb to the fuse block to the firewall plug to the on off switch with the test light or volt meter. All along the way look for loose or corroded connections. Hope that is helpful.
Testimonial: "Thanks I'll try the jumper cause I had no power from the fuse box to the headlight"
SOURCE: passanger headlight bulb inop
disconnected the HID ignighter. used a T20 to remove bulb cover. pulled out bulb and installed new bulb. DO NOT TOUCH THE BULB WITH BARE HANDS!!!
SOURCE: neither turn signal work on 1999 volvo s80, fuses are ok,
Remove the fuse that is labeled "SWM" in the fuse box, then re-install it. This should fix your problem. Have the software updated by a Volvo dealer to prevent this in the future.
SOURCE: 2001 subaru outback headlight not working
chapmnfarm: your head lights use a "2" fuse system.
one for the left and one for the right.
The fuse box you are looking for is under the hood on the passenger's side. It is a black box roughly 8 inches long and 4-5 inches wide. When you remove the cover, you will see fuses and relays. What you are looking for is the section in the box which has a cluster of 7 fuses. 3 in one row and 4 in the other. On the outer parameter are two relays. The fuses you are interested in are located in the row of 4 fuses, with the two closest to the "L" shaped part of the box. Both of those should be 15 amp fuses.
The fuse below those should be a 20 amp which is the lighting switch and the one below it is a 15 amp which is for the interior lights and the clock.
Check your harness grounds in the engine compartment near the area you have the problem. There are ground wires which come out of the harness on both sides of the core support. The wires are black in color and have "EYES" crimped onto the ends of the wires. Both of them will probably be located about 4-6 inches below the upper tie bar on each side of the radiator. Odds are that the eyes will be large enough to pass a 6mm bolt through.
I hope what I have given you will resolve your problem. Lem me know,,good luck>>>>>>>>>>>>>>>
SOURCE: Volvo S80 - Low beam out - Changed bulb & fuses
all i did i unpluged the batter for 5 min and pressed the brake pedual while the batttery was unhooked and when i plugged it back in it solved my problem it has been working all day fine
SOURCE: How to change Headlight HID bulbs in Infiniti QX4
It is really not that difficult for an 01 qx4, and if you order the bulb online you'll save enough money that if it takes you two or three tries (and bulbs) you'll still save over what the dealer or a mechanic would charge you:
Don't touch anything on the new bulb besides the plastic base (don't touch the glass!)
1. Make sure you disconnect the battery before anything else (you don't want to get shocked by these high voltage babies). If you're replacing the passenger side bulb, take the battery out for more room to work, especially to see what's going on in there (you can undo the air filter case on the drivers side for the same benefit, again--disconnect the battery first). 2. Find and unscrew the round, black, plastic lid behind the headlight, it's up and to the left. 3. You'll see a shiny metal connector with electrical warnings printed on it and Michael Jackson glove looking wiring attached to it. Turn that gently to the left to open up access to the actual bulb (you'll now see the bottom/back of the bulb--a black circle with a small metal tip in the middle). 4. Unhook the two metal braces that hold the bulb in place (push in gently to let wire out--kind of like unhooking a bungee cord or unsetting a mouse trap). 5. Pay attention how the two divots on the bulb case line up with the little nubs at the top of the encasing (you have to put the new one in lining up the same way.) 6. You can now take out the bulb. You might consider practicing the replacement sequence with your old bulb that you just took out before sticking the new one in there--just to get the hang of it so you aren't banging the new one around. 7. Once you've got the bulb back in there just put everything else back in place in reverse order. 8. Wash those dirty hands and try turning on your lights. 9. Go celebrate your automotive victory by driving somewhere at night!
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