How do I adjust the aim of the headlights?

ANSWER : The OEM part number for the driver side (left) headlamp assembly that contains the adjusting mechanism is 55156351AK. The adjusting mechanism is not vended separately. The OEM assembly is about $300 and the aftermarket assembly (sold on Amazon for instance) is $100. You can also obtain an OEM used headlamp assembly by searching at Car-Part.com. Given the availability of a new aftermarket part at $100, I would not recommend spending more than $50 max on a used one and that would have to be in very good condition to make it worth it. If you want the headlight assembly replaced and adjusted by a certified Mechanic, dispatched by YourMechanic right to your location, please request headlight assembly replacement and the responding certified mechanic will get this taken care of for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

ANSWER : Your headlights can be adjusted to ensure that the beam strikes the road correctly for good nighttime illumination. While the headlights were adjusted correctly when you bought the car, there are things that can throw off the aim, including:

Towing a trailer
Carrying heavy items in the trunk

Honda does not recommend adjusting the headlights on your own, as it requires not only the right tools, but also a space in which to do it properly and knowledge of proper headlight adjustment/aim.

ANSWER : The common thread between the headlights and the signal lights is the combination switch. The combination switch controls your signal lights, turns the headlights on and off, as well as controls the high beam function. Most like;y the switch or wiring to the switch has an electrical short. This can cause constant power going to the functions the switch controls. While the combination switch is the most likely cause, wiring can also be a problem so I suggest having a certified technician look into the lights staying on to determine if there is a wiring issue before replacing any components. If the combination switch is found to be the culprit, the technician can replace it for you.

ANSWER : Hello.

The daytime running lights are not supposed to function at the same time as the headlights. The daytime running lights are only supposed to come on during the day, to provide additional visibility for daytime driving, independently of the headlights. When the headlights are turned on the daytime running lights should turn off. If they are not turning on it may be possible that perhaps the bulbs have burned out, or there is an issue with the fuse or relay. If you run into any issues, consider contacting a certified technician, like one from YourMechanic, as certified technician can diagnose any issues with your lights firsthand and help you make the right repair.

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.

ANSWER : There is an adjuster on the outside, near the top of light. You may have to remove the trim panel to get to it. The other is located behind the light on the inside. It is on a long rod with a hex head. Go to this Ford forum post has a helpful reference that may help you.

If you need help with this, consider YourMechanic, as a certified technician can inspect your lights and help you make any adjustments that are necessary. Good luck.

ANSWER : Hello. You definitely have two different issues here. The headlight issue should just need to be adjusted. This is assuming that they lights were put in correctly. There is a vertical and horizontal adjusting screw that is used to get the headlamps in the correct position.

As for the blower, this is likely the resistor. Some of the time it can be caused by an electrical short but most of the time it is the resistor. The resistor shorts internally and sticks on one position. This can be tested with a voltage meter first to make sure it is bad. If you want to have this all teken care of for you, consider YourMechanic, as a certified technician can come to your home or office to diagnose the headlight and air conditioning to have these problems resolved.

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