2007 Mustang Low-Beam headlight on only one side only comes on for 10 seconds then go outs, however high beams work fine!?!?
I very recently purchased a 2007 Ford Mustang V-6 in great condition, everything for the most part works okay. However just yesterday I noticed that the passenger side low beam light "was out", although the high beams from the same bulb worked fine as do the driver's side low and high beams, I changed the bulb to a new one and nothing, the low beam didn't even come on. So then I changed the part which this "H13" bulb plugs in to, and I rewired it all correctly to this brand new headlight plug. The low beam
Experienced mechanics share their insights in answering this question :
Hey there, thanks for writing in about your 2007 Mustang. The low beam circuit is monitored by the the Smart Junction Box. It’s the fuse box in the right kick panel. Basically what this means is if the resistance, or the current flow in the circuit is not within the specified range, it will turn off the power to it. That’s why you won’t find a fuse for the low beams. It will re-check the circuit every time the ignition key is cycled. The circuit flows from the SJB through the fuse box under the hood, and then to the headlights. Inspect as much of the wiring as you can. Especially where it might have been tampered with for the HID lights. If there is a short to power or ground, or too much or not enough resistance, it will turn off the power. This is not the case with your fog lamps and high beams. They are powered by a relay that is fused, and the circuit is not monitored. It will simply blow a fuse if there’s a problem. If you need more help, consider YourMechanic, as a certified technician from YourMechanic can come to your car’s location to diagnose and repair the headlight problem.
How to Identify and Fix Common car Problems ?
Our sources include academic articles, blog posts, and personal essays from experienced mechanics :
It was once the norm to have separate bulbs for your high beams and low beams, but most modern cars have only a single bulb with two filaments on each side of the vehicle that performs the work of both the high beams and the low beams. There are a few different types of bulbs available.
On classic mustangs, it`s a round looking switch mounted on the floor near the kick panel.
Unlike the previous bulb types, the H11 bulb uses an L-shaped design. As for its primary function, such types of bulbs are used for the low beam in headlights. In fact, this type of bulbs can be used in both headlights as well as fog lights if needed.
The Difference Between H11 and 9005 Bulbs
An H11 can last an average of 30,000 hours, while a 9005 can last up to 50,000 hours. However, it`s important to mention that despite having a shorter lifespan than the 9005, the H11 still lasts longer than most headlight bulbs.
Auto High-Beam Headlamps
This driver-activated system with windshield-mounted camera scans the road at speeds above 25 miles per hour.
Projector Halo Headlights are popular among Mustang enthusiasts and give your front end a dramatic halo effect and are available in bright chrome or dark smoked.
As per the Highway Code, you must use dipped headlights “when visibility is seriously reduced”, i.e., when you are able to see less than 100m in front of you. So basically, any time you`re driving at night or during bad weather.
Whether an LED headlight—which consists of multiple LEDs—is set to low beam or high beam is dependent on the number of lights that are shining. When set to low beam, the individual lights of the LED will adjust to create a defined line so there is no light coming out above the beam.
Fog Resources
Make your vehicle visible to others both ahead of you and behind you by using your low-beam headlights since this means your taillights will also be on. Use fog lights if you have them. Never use your high-beam lights.
Yes, H8 and H11 are the same bulbs they just carry different part numbers, positions, and default wattages for standard halogen bulb replacements. Aside from these minor differences, H8 and H11 are identical on every other front from size and shape to locking tabs and connectors.
The combination of quality and visibility make it a clear choice as our top recommendation. However, those trying to save as much as they can will do just fine with the Philips H11 Standard Halogen Replacement Headlight Bulb.
H11 and 7 lamps will generally be better than H4 as the lens is designed for the one job (dipped or main), whereas an H4 bulb has both dipped and main in the one bulb so the lens is comprised to do both duties.
If you`re in a rush, let us save you some time – H11 and H7 are not the same bulb, you cannot replace one with the other, and neither is better than the other, they simply have different designs and fit on different vehicles and/or different beams.
Standard H11 bulbs are 55 watts whereas standard 9005 (HB3) bulbs are 65 watts. The 9005 come in a higher wattage because they are often used in high beams and in some cases as dual-beam bulbs, which require more output.
Porsche, BMW, Audi, Mercedes-Benz, and Volvo are a few that feature some type of adaptive headlights on much of their range. Many mainstream vehicles now have adaptive headlights, too. Ford, Subaru, Toyota, Hyundai, and Honda are among automakers that include adaptive headlights even on some entry-level models.
S550 Mustangs got LED taillights from the factory starting with the 2015 model, so all S550s have them. However, you may still want to update the look of your taillights with a different style taillight assembly or cool lighting effects.
The legendary `Pony` logo has become synonymous with Ford Mustang. Phillip Thomas Clark is credited with designing the Mustang Logo. Lee Iacocca said the Mustang is a wild horse not a domesticated racer!
Executive stylist John Najjar, who was a fan of the World War II P-51 Mustang fighter plane, is credited by Ford with suggesting the name. Najjar co-designed the first prototype of the Ford Mustang known as the “Ford Mustang I” in 1961, working jointly with fellow Ford stylist Philip T. Clark.
When you cannot see farther than 200 feet using low-beams, you should switch to high-beams, unless: Another vehicle is within 200 feet and approaching you from the opposite direction. You are less than 200 feet behind another vehicle. Heavy rain, fog, or snow are present.
Full beam headlights are the brightest type of headlight on normal vehicles. They are angled higher than dipped headlights, allowing you to see more of the road, and are sometimes known as high beams.
The top of the low beam shining on the wall should be at or slightly below the height of the center of the headlight lens for most vehicles. You should expect the light pattern to be higher on the right side (passenger side) to illuminate road signs and lower on the driver`s side to prevent blinding other drivers.
HID Headlights: Brighter and More Efficient
The result is a bright, whiter light than halogen bulbs. They are also more efficient and typically last longer. HID headlights are sometimes referred to as Xenon lights because of the gas found inside.
HIDs are very efficient compared to CFL and incandescent lights (120 lumens/watt source efficiency). They lose out to LEDs principally because their system efficiency is much lower (<30 lumens/watt) due to all of the losses associated with omnidirectional light output and the need to redirect it to a desired area.
For example, the H4 bulb has two filaments (one for high beam and the other for low beam), whereas the H7 only has one. A conventional headlight with a single reflecting surface can use an H4 bulb. But if a vehicle uses H7 bulbs, it has to have a twin-pod setup, one pod for high and the other for low beam.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
2007 Mustang Low-Beam headlight on only one side only comes on for 10 seconds then go outs, however high beams work fine!?!?
ANSWER : Hey there, thanks for writing in about your 2007 Mustang. The low beam circuit is monitored by the the Smart Junction Box. It’s the fuse box in the right kick panel. Basically what this means is if the resistance, or the current flow in the circuit is not within the specified range, it will turn off the power to it. That’s why you won’t find a fuse for the low beams. It will re-check the circuit every time the ignition key is cycled. The circuit flows from the SJB through the fuse box under the hood, and then to the headlights. Inspect as much of the wiring as you can. Especially where it might have been tampered with for the HID lights. If there is a short to power or ground, or too much or not enough resistance, it will turn off the power. This is not the case with your fog lamps and high beams. They are powered by a relay that is fused, and the circuit is not monitored. It will simply blow a fuse if there’s a problem. If you need more help, consider YourMechanic, as a certified technician from YourMechanic can come to your car’s location to diagnose and repair the headlight problem.
My dash board don’t work my front light work when I change my light into high beam and my back window won’t go down
ANSWER : As unfortunate as it is, your vehicle would be considered flood damaged. Diagnosing electrical problems in a flood damaged vehicle is nearly impossible. This would take many hours or even days to determine which wiring harnesses and circuits have been affected. Then nearly all of the wiring under the dash would likely require replacement as well as many sensors and switches. On a BMW vehicle, the amount of wires and switches are likely more than that of a lower end vehicle. Due to the inefficiency in cost, you would likely be able to purchase another BMW like yours for less than what it would cost to fix your car. Many insurance companies would consider this type of damage to total out the vehicle unfortuantely.
My headlights are not working correctly – 1996 Chevrolet Blazer
ANSWER : Hi there. Most of the time this is caused by a bad headlamp switch. When the switch fails, it will cause this to occur. If the switch is fine, then it may have an issue with the headlamp relay. I typically take my voltage meter and test the circuit starting at the headlamps until I find where the voltage is being lost.
If you want to have your headlamps fixed, consider having a certified mechanic, such as one from YourMechanic, come to your home or office to inspect the headlights and suggest any necessary repairs.
I turn my high beam headlights on and both headlights go out.
ANSWER : Hello, thanks for writing in about your Nissan Frontier. The only way to tell if it is the light bulbs or the switch is to check for power to the bulbs when you switch to high beam. Most of the time both bulbs are bad. The connections to the bulbs could be faulty as well. If you’re unable to pinpoint the issue, have a certified technician, like one from YourMechanic, diagnose your lights firsthand for an accurate repair.
One of my car’s headlights does not work
ANSWER : Hello. There are 2 devices in the front wiring of your vehicle called "Signal Acquisition Modules." One is for the left side of the front, the other is for the right. They act as an electrical "router" and power distribution module for electrical loads up front. These modules take signal pulses from light switches and other controllers, and turn on power to the requested device.
The SAM units have fuses in them, just as a traditional box would. I would check the fuses in each SAM for both low and high beams, then check the igniters for the xenon low beams. If this seems a bit intimidating, I recommend having a certified mechanic, such as one from YourMechanic, come to your location to inspect for any electrical problems and suggest the needed repairs.
I changed the lightbulbs on my cars headlights but the driver side headlight won’t turn on…
ANSWER : Hello. Ironically, I happen to have a 2000 CLK 430 as well and I experienced an almost identical scenario as you did. I had a fog light out on my vehicle, thinking it was a bulb I went ahead and replaced the light bulb but once I replaced it it still did not fix the issue. Upon further inspection of my vehicle I found that the some of the insulation around the wiring leading to the fog light was brittle and causing wires to be exposed. I taped the wires with some electrical tape because Mercedes-Benz has a very sensitive electrical system and if a wire is exposed it will cause resistance. If the electrical system senses too much resistance it will cut power off to that component to help protect other electrical parts. I suggest to have a technician such as one from YourMechanic inspect the wiring of your fog light that is out, check the fog light fuse in the side fuse compartment, and also check the clearance light bulb. The clearance light bulb is a small bulb located under the fog light and is integrated into the fog light circuit. If the clearance light is out it will interrupt the fog lights power. On my vehicle it was a clearance light being out and the damaged wiring to the fog light causing my fog light to be inoperative. You are able to find a technician and schedule an appointment to evaluate your vehicle here https://www.yourmechanic.com/services/fog-or-driving-lights-are-not-working-inspection
Both R&L low beam headlights quit working simultaneously.
ANSWER : Hi there. Check the switch to the headlights and see if there is a break in the wiring. Check the fuses and see if there is any fuse that are blown. If the fuses are good and there is no break in the wiring, then either the switch has failed or the ballast resister has failed on the low beam circuit. Turn on the switch and check for power coming out of the switch. If there is power to the switch and power out of the switch, then I recommend replacing the ballast resister. If there is no power coming out of the switch, then the switch needs replaced. If you need further assistance with diagnosing the low beams, then seek out a professional, such as one from Your Mechanic, to help you.
Lights not working proper
ANSWER : Your vehicle was not originally designed to run the low voltage led bulbs so some minor issues can occur. Swap the bulb or bulbs, that are not lighting up with the same bulbs from the opposite side of the vehicle. If they work fine, then you may have a bad bulb.
If the same problem happens after swapping the bulbs, then the problem may be in the bulb socket. Try bending the tabs slightly to make better contact with the bulb. Also, led bulbs can be polarity sensitive so if the bulb can be installed in the socket more than one way, try removing the bulb and rotating it 180 degrees before reinstalling it. If none of this helps and you want to continue using led bulbs, you may have to consider installing resistors to make them work properly.
If you decide to get this fixed, consider YourMechanic, as a certified technician can diagnose the issue with your light and help you fix it accordingly.
