Whether you feel you can’t see as well at night, or you feel you’re lighting too low, or too high, in all these situations, there’s only one part of your car responsible – your headlights, also identified as high beams. Although this adjustment may appear easy thanks to the thumbwheel on your dashboard, a whole adjustment is much more complex than this elementary manipulation, and in this article, we are going to see how to adjust the headlights of your Mercury Mariner? To get this done, first we will see why you need to adjust your high beams, and secondly how to adjust the headlights of your Mercury Mariner.

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Why adjust the headlights of your Mercury Mariner?

So let’s start our content with the benefit of adjusting the headlights of your Mercury Mariner. For most people, our headlights are adjusted sufficiently, and they appear to light up enough at nighttime. Sadly this is not constantly the circumstance and examining this setting, either because the headlights on your Mercury Mariner are not bright enough, or because you have the sensation that they are too weak is a good idea .

Adjusting the high beams of your Mercury Mariner for safety

To begin with, the headlight adjustment of a Mercury Mariner must be finished for a simple security reason. Whether it’s for you, or for the other users you come across during your night trips. In actual fact, if you don’t see enough, the risk is to ignore an obstacle on the road, or to predict a curve badly. However, if your headlights are too strong, regardless if you are expected to switch to low beam lights when you pass a vehicle, the time needed to make this change will generally expose the driver in front of you to the headlight beam of your Mercury Mariner . It is therefore necessary for others as well as for you to have an optimal adjustment of your headlights.

Adjusting the headlights of a Mercury Mariner for legal reasons

In addition to security, there is a law that supervises the power, the adjustment of car headlights (articles R313-2 of the Highway Code), here is what it suggests: have between 2 and 4 headlights that illuminate at minimum 100 meters. Another legislation supervises their use, the European one (directive 76/756/EEC), which stipulates that there is no maximum height for the adjustment of the headlights, but that the maximum width of the beam must be matching to that of the dipped headlights and that the maximum luminosity must be 225, 000 cd.

How to adjust the headlights of a Mercury Mariner?

We will now proceed to the part that concerns you the most in this article, how to adjust the headlights of his Mercury Mariner? This setting may appear a bit complex, but by following the guidance you should be able to perform it without too much problem.

Preparations to adjust the headlights of a Mercury Mariner

To begin with, you’ll need to prepare your car to adjust your high beams in good conditions, here are the preparations to set up:

  • Place your car on a surface in front of a white wall for example, about 4 or 5 meters from the wall.
  • Verify your tire pressure attentively.
  • Verify that the height adjustment knob for the lights is set to 0
  • .

  • Try doing that with half a full tank.
  • Take out all unnecessary weight from the vehicle, only one person should be in the driver’s seat.

The headlight adjustment of his Mercury Mariner

Once your vehicle is in place, you will turn on your dipped beam and make a cross-shaped mark (one horizontal and one vertical section) in the middle of the beam that will be projected on the wall. Verify with a level that both parts of the cross are straight. Then back your car up to a distance of between 7 and 10 metres. For the rest of the procedure here are the steps to follow:

  • Open your hood, find the screws for horizontal and vertical control of the headlights of your Mercury Mariner (they are generally marked, and those on top must modify the verticality and the one on the side manages the horizontality of the adjustment).
  • Use a cloth or another thing to hide the projector on which you are not making the modification.
  • Using the screws to make the horizontal modification, you should have the most intense part of the beam which should be a little to the right of the vertical line marked on the wall
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  • With regard to vertical modification, you will have to use the screw to try to position the upper end of the beam at the level of the horizontal marking on the wall, or slightly below.
  • Once finished, verify that the headlights setting of your Mercury Mariner is coherent, do not think twice to verify it after you have driven it, occasionally it may move.

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If you want to adjust the fog lights on your Mercury Mariner, please read our content on this subject matter.

If you want more tutorials on the Mercury Mariner, go to our Mercury Mariner category.