How to Adjust the Lights on a Buick Excelle?
4 Answers
The method to adjust the lights on a Buick Excelle is: 1. Enter the driver's compartment and locate the headlight height adjustment knob, which can adjust the headlight height in four levels; 2. For the highest headlight level, turn the knob to the 0 position; 3. For a relatively high level, turn the knob to the 1 position; 4. The 2 position offers a relatively lower headlight height, while the 3 position is the lowest height setting. Taking the Buick Excelle 2020 model as an example, its body dimensions are: length 4468mm, width 1765mm, height 1469mm, wheelbase 2611mm, fuel tank capacity 40l, trunk capacity 491l, and curb weight 1070kg.
My Buick Excelle used to have headlights that didn’t shine far enough, but I found a practical solution: just prepare a Phillips screwdriver. At night, park the car about 7-8 meters away from a wall and mark the original headlight height on the wall with tape. Open the engine compartment and locate the white plastic adjustment knobs at the back of the headlights (there’s one above the low beam for adjusting vertical height and another on the side for adjusting horizontal width). Adjust while observing the changes in the light pattern on the wall, lowering the center point of the beam about 5 cm below the original mark. This way, driving at night won’t blind oncoming drivers while still illuminating the road ahead. Remember to balance both headlights separately. After adjusting, test-drive to check the effect—repeat the process if needed. The Excelle’s adjustment mechanism is quite sturdy, so avoid using excessive force. If you still can’t get it right, a quick 20-minute fix at a repair shop should do the trick.
Recently, I adjusted the headlights of my Excelle by myself and found it wasn't actually difficult. First, park the car on level ground facing a wall about one car length away, then turn on the low beams. Observe the light pattern on the wall and locate the two adjustment holes behind the headlight cover (the vertical one is a hex socket, the horizontal one is a Phillips screw hole). Use the hex wrench from the car toolkit to slowly turn them - counterclockwise rotation raises the beam height, while adjusting the horizontal one changes the beam width. The key is to focus the main beam directly ahead and ensure both lights are at the same height, otherwise a left-low-right-high setup will cause misalignment. Watch for color changes during adjustment - if it turns bluish or white, you've gone too far. After finishing, secure the screws with transparent tape to prevent loosening and maintain the setting longer. Regularly cleaning the headlight covers during car washes also helps improve brightness.
Adjusting the Buick Excelle's headlights mainly relies on the adjustment holes behind the headlight assembly, with a T15 hex key being the most convenient tool. Operating in a dimly lit garage makes it easier: open the engine hood, locate the metal adjustment rods at the rear of the lamp housing, with two screws each for vertical and horizontal adjustments. The vertical screw controls the pitch angle of the headlights, while the horizontal one alters the lateral beam range. Remember to make small adjustments—rotate just a quarter turn at a time, then step out to check the effect. Pay special attention to ensuring the center point of the beam doesn’t exceed 0.8 times the height of the headlight, as stipulated by national standards. While newer models feature automatic leveling, the older Excelle still relies on mechanical adjustments for reliability. After adjustment, test it on a slope to ensure the beams don’t rise excessively when climbing—safety comes first.
