
Audi A4L headlight height adjustment method: Under stationary conditions, the hexagonal small wrench on the left front fuse box can be used to relatively adjust the headlights, after which the level sensor will make new adjustments based on this height value. Adjustable headlight height refers to the function of adjusting the angle of the light beam, which helps to obtain a better illumination range and thereby improve road driving safety. In terms of appearance, the Audi A4L features smooth and rounded lines at the rear, with a slightly upturned design on the trunk lid that helps stabilize the airflow at the rear during high-speed driving. The polygonal taillights on both sides extend inward. In terms of suspension, both the front and rear suspensions of the Audi A4L are five-link independent suspensions.

I remember the first time driving my friend's Audi A4L at night, always feeling the headlights were angled too low to illuminate far ahead. Later, I discovered a white knob hidden near the left knee on the driver's side, with numbered settings. Adjusting it with the engine off changes the beam height—setting 0 projects the farthest, and higher numbers bring the lights closer. This clever design allows easy adjustments at traffic lights without needing to pull over. However, note that post-2017 high-end models might auto-level; when you hear the motor humming, resist the urge to manually turn the knob.

Last time when helping my cousin adjust his old A4L, I found the real action was in the engine bay. You need to open the hood and locate the toothed adjustment hole above the rear of the headlight assembly. Insert a T20 hex wrench, turn clockwise to raise the beam and counterclockwise to lower it. Using a wall as a reference works best, adjusting from 3-5 meters away to keep the light cutoff at 90% of the headlight height. After adjustment, remember to check the actual effect from the driver's seat, since the driving perspective is what matters most.

When I first picked up the car, I noticed the right headlight was always lower than the left. The after-sales service explained it's a European anti-dazzle design. To adjust the height, there are two steps: First, locate the adjustment hole in the engine compartment (a white gear hidden inside the fender liner) and turn the hex wrench counterclockwise to raise the beam. It's advisable to have some WD-40 handy, as plastic parts can get stuck over time. After adjustment, test it on a rough road; if the light shakes excessively, the adjustment gear might be stripped. For newer models with headlight self-check, if the lights scan up and down during startup but settle too low, you'll need to visit the dealership to reset the height module via computer.


