2011 Altima adjustment screw is inside the oval shaped hole by where the headlight assembly attaches at the top of the fender support. If you look in the hole you will see a green plastic adjustment screw. Use a #2 Phillips head screwdriver.
SOURCE: adjusting 2001 nissan frontier headlights
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.
If you have one adjustment screw, it will control your vertical aim. If you have two adjustment screws, one will control your vertical aim and the other will control your horizontal aim
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)
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.
SOURCE: head light 2005 altima
you have to remove the bulbs from inside of the hood in the engine compartment. in some cars you have to remove some "pins' and remove the entire headlight assembly.. You then remove the holder where the lightbulb is located and replace the bulb.
SOURCE: dirty headlight lens
Probably vents on backside are plugged up.Little plastic plug like thing, with tiny screen in it. Pulls out and needs cleaning.
SOURCE: Headlight Aiming/Adjustment
On the sides of the Radiator cross member. Look straight down. Should be a silver colored phillips head screw
SOURCE: headlight adjustment
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)
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.
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