How to turn off the check headlight code once replaced 2009 Mercury Milan

SOURCE: where are the headlight adjustment screws on a

The adjustment screws/nuts should be located either on the top of the headlamp assembly, behind the headlamp assembly, or near the frame rail by the radiator support.

You will have vertical adjustment screws for each independent beam (separate highs and separate lows, but will be same screw if highs and lows are the same bulb). You may also have additional horizontal adjustment screws as well

Park your car on a level ground 30 feet from a wall and measure the height from the ground to the bulb and mark on a wall (do this for highs beams and low beams if the bulbs are separate, if highs and lows are the same bulb, only do it for the lows)

For Low Beams: If the headlights read VOR, then aim the brightest part or cutoff part just below the mark on the wall. If it says VOL or nothing, aim them 2 inches below the mark on the wall.

For High Beams (if separate from low beams): Aim the headlight directly at the line you marked on the wall.

SOURCE: adjust headlights on mercury milan 2007

There are usually 2 adjustable screws in the casing. They may be the same ones used to attach to the headlight support, but the headlight housing glides along the screw and travels along it to adjust the beam.

If you have anything left of your old unit, look at it. Sometimes the manufacturer provides an extremely small hex shape on the back of the screw. This type can adjust from the rear of the headlight under the hood and you use an extremely small socket to turn it.

There is often a rubber collar on this screw shaft that you can grip with a pair of pliers The rubber collar looks a little like a sink washer. Keep the rubber collar stationary and then turn the shaft and it will adjust.

SOURCE: 2006 Mercury Milan 3.0L U0100 code

Is the battery good in it?

SOURCE: How do I change the headlight bulb on a 2006 mercury milan

You will have to raise the hood more the likely have to remove a few pieces to get to it, when you do you will have to reach in and remove the cover if it has one ,then feel for the conecter that holds the bulb turn it counter clockwise and pull it out it will have a clip on each side realease them and unplug the bulb, then replace with a new bulb wear gloves they say not to get you fingers on the bulbs they will blow when you turn them on sometimes. when you put the new bulb in you should hear it click when it is in place, then just repeat the process putting it back together. hope this helps.

SOURCE: I have 56000 on a 2008 Mercury Milan and my check engine light is on. Coil #4 has been replaced and still having problems.

What problems-cylinder misfires

Just because #4 coil was replaced,
does not mean you got all the bad
ones or that #4 was bad