Need Assistance? Live Chat

Select by Brand

Get Email Exclusives

Sign up for email updates on the latest exclusive offers

Lincoln LS Headlight Assembly

Common Problems with Lincoln LS Headlight Assembly

Your Lincoln LS headlight assembly provides you with visibility and the ability to drive at night and during inclement weather. It is an essential safety system, which, when not working properly, may lead you to various road accidents. Here are some problems you may encounter with your headlight assembly and how to troubleshoot them:

Only one headlight works

If only one headlight works, the other bulb may have burned out, since the bulbs have a limited number of hours in their useful life. This is also affected by the amount of vibration the car receives when driving. In this particular situation, the thin tungsten filament inside the bulb may have burned out. Another reason, in case you find the bulb is not burned out, is corrosion. Inspect the electrical connections-the socket and the connecting wires-for any sign of rust and corrosion. Check also if there are any wires that might have gotten loose over time.

Fluctuating headlight brightness

If both headlights are working but the brightness of the bulbs change when you step on the accelerator, you will need to check the charge of the battery using a digital multimeter while the engine is idling. It should read 13.5 to 14.5 volts. If it reads less than 13 volts, you may have a bad alternator or a slipping alternator drive belt.

Condensation from leaks

Over time, the headlight assembly can begin to leak and allow moisture and other contaminants into the inner side of the lenses where the bulbs are. This can damage the bulbs and cause them to burn out sooner than they ought or even create a short. Aside from this, the moisture inside the lenses can block out useful light and cause the Lincoln LS headlight assembly to poorly illuminate the road ahead. Check the seals around each opening, especially around the bulb sockets, if they have hardened or flaked out so you can replace them as necessary.

Dull headlight lens covers

If you have an older Lincoln LS model, you may encounter dull and milky-white headlight lens covers. This is caused by the harmful UV rays of the sun as they beat down on the plastic material of the lenses. This process breaks down the plastic and forms a film that can even be yellowish in color. Such discoloration can also extend below the surface of the headlight housing-a clear sign that you need to replace it with a new one.

Lincoln LS Headlight Assembly Bestsellers View more

Lincoln LS Headlight Assembly Available Years

  • Keeping the Lincoln LS Headlight Assembly Bright and Shiny 27 February 2013

    Maintaining clean headlights adds to your road safety as well as others'. And since headlights are crucial when it comes to driving at night, it is imperative that you keep your Lincoln LS headlight assembly in top condition. Remember that continuing to drive with busted headlights can get you a traffic ticket, not to mention an accident. So here are a few tips you can follow to keep those lights bright and shiny:


    Remove condensation.


    When you see any moisture present inside the headlight lenses, simply remove the assembly from the car. Once you have the sockets and the lights removed, you can place the lenses under the sun to let the moisture evaporate. A faster solution to this would be using a hair dryer. Also, while you're at this, you can check the bulbs if the moisture has compromised them. Look for any dark or black burn marks that result from electrical shorts. When you find that either one or the other is indeed compromised, replace both the bulbs to ensure lighting consistency.


    Put on effective seals.


    When you are ready to put the headlight assembly back on, make sure you put on reliable seals that will not crack or flake. For effective sealing, you can use permatex compound or a silicone sealant. Simply apply a small bead along the perimeter of the seam and give it time to cure and dry before you put the whole assembly back into place.


    Clean dirty headlights.


    Driving with dirty headlights can reduce nighttime vision by up to 90%. Wipe them down every time you wash your windshield. You may also use specific headlight cleaners, which are quite readily available in most hardware stores.


    Repair oxidized, cloudy headlights.


    Lincoln LS headlight assembly lenses are mostly made of plastic polycarbonate lenses. Sure, this type of plastic bounces right back when it encounters considerable impact, but it also has a weakness. As the harmful UV rays of the sun constantly beats it down during drives, the plastic lenses tend to develop a yellow, cloudy film that can impede useful light from the bulbs. To remove this cloudy film, simply use some lens clarifying products that you can easily procure and deliver you great results. You can also use the rotary buffer to make the process faster.