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A headlight alignment inspection at Route 66 Auto Repair in Upland checks where your headlights point, how bright they are and whether the lenses let the light through. Aim drifts after a bulb change, a bumper repair or years of rough roads. We check the beam pattern, note lens and bulb condition, and tell you whether an adjustment is needed.
How can you tell your headlights are aimed wrong?
- Oncoming drivers flash their lights at you
- The pool of light looks short on dark roads in the foothills
- One beam sits higher than the other on a garage wall
- The lights seem to point into the trees
- You recently replaced a bulb, a headlight assembly or a bumper
What does a headlight inspection check?
Aim is checked with the vehicle on level ground, tires at the right pressure and a normal driver load. We look at the height and side-to-side position of the low beam cutoff, the sharp top edge of the beam, and compare it with the spec for your vehicle. On vehicles with automatic leveling, we scan that system for codes.
Lens condition matters as much as aim. Southern California sun turns plastic lenses yellow and hazy, which scatters light. We note haze, cracks, moisture inside the housing, and any bulb that is dim or the wrong type. If an adjustment is needed, headlight alignment adjustment covers that work.
How we inspect headlight aim
Step 1: Prepare the vehicle
Tire pressures are set and the car is parked on level ground.
Step 2: Check the beam
Low beam cutoff height and direction are checked for each light.
Step 3: Lenses and bulbs
Haze, moisture, cracks and bulb output are noted.
Step 4: Leveling system
Auto-leveling systems are scanned when equipped.
Step 5: Report
You get results for each light and any recommended adjustment.
What's included in a headlight alignment inspection
Included on the work order
- 01Low beam aim check for each headlight
- 02High beam function check
- 03Lens haze and crack inspection
- 04Moisture inside the housing check
- 05Bulb output and type check
- 06Auto-leveling code scan when equipped
Which findings are need-now, and which can wait?
Need now: call
- A beam aimed high enough to dazzle other drivers
- A headlight that is out
- Lenses so hazy the road is poorly lit
Need later: book
- Early yellowing on the lenses
- A slightly low beam with good visibility
How pricing and timing work
The inspection price is stated at the counter. Adjustment, lens work and bulbs are each listed on the written estimate. Light problems like a flickering headlight go through electrical system diagnostics, and the electrical system inspection report covers the rest of your lighting.
Frequently asked questions
Why did my aim change after a new bulb?
Some bulbs sit slightly differently in the housing, and a housing can be bumped out of position during the swap. Brighter aftermarket bulbs can also scatter light in housings not designed for them.
Can I check my own headlight aim?
You can park facing a wall on level ground and see whether both beams sit at the same height. That shows a big mismatch, but it cannot tell you if both lights are off by the same amount. A measured check can.
Do hazy lenses really matter?
Yes. A hazy lens scatters light up and sideways, so less reaches the road and more reaches other drivers' eyes. Restoring or replacing the lens can make a clear difference at night.