# Headlight Alignment Inspection in Upland

> A headlight alignment inspection in Upland that checks beam aim, lens clarity and bulb output, so you can see the road without blinding other drivers.

Source: https://route66autorepairshop.com/diagnostics-and-inspections/headlight-alignment-inspection  
Updated: 2026-09-17  
Business: Route 66 Auto Repair, 1775 W Foothill Blvd, Upland, CA 91786, (909) 608-7699  
Hours: Monday to Friday 8 AM–5 PM, Saturday 8 AM–2 PM, Sunday closed

**TLDR:** We check **beam aim**, lens haze and bulb output, so your lights reach the road and **don't blind oncoming drivers**.

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](https://route66autorepairshop.com/electrical-services/headlight-alignment-adjustment) covers that work.

## How we inspect headlight aim

1. **Prepare the vehicle:** Tire pressures are set and the car is parked on level ground.
2. **Check the beam:** Low beam cutoff height and direction are checked for each light.
3. **Lenses and bulbs:** Haze, moisture, cracks and bulb output are noted.
4. **Leveling system:** Auto-leveling systems are scanned when equipped.
5. **Report:** You get results for each light and any recommended adjustment.

## What's included in a headlight alignment inspection

- Low beam aim check for each headlight
- High beam function check
- Lens haze and crack inspection
- Moisture inside the housing check
- Bulb output and type check
- Auto-leveling code scan when equipped

## Which findings are need-now, and which can wait?

**Need now:**
- A beam aimed high enough to dazzle other drivers
- A headlight that is out
- Lenses so hazy the road is poorly lit

**Need later:**
- 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](https://route66autorepairshop.com/electrical-services/electrical-system-diagnostics), and the [electrical system inspection report](https://route66autorepairshop.com/diagnostics-and-inspections/electrical-system-inspection) 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.

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Call (909) 608-7699 or visit https://route66autorepairshop.com/contact for a written estimate.