A cracked headlight is one of the most common results of a front-end collision. It’s also one of the most underestimated. If you’ve just been in an accident, start with the essential steps to take after a collision, then read on for headlight specifics. What looks like a simple lens swap can involve brackets, sensors, wiring, and calibration that affect both your visibility and your vehicle’s safety systems.

Why Modern Headlights Are More Than a Bulb

On vehicles from the last decade, headlights are integrated assemblies that can include:

  • LED or HID projector modules with precision-aimed optics
  • Adaptive headlight motors that swivel the beam through turns
  • Automatic high-beam cameras built into the headlight housing
  • DRL (daytime running light) strips with separate LED circuits
  • Headlight washer nozzles on the bumper cover
  • Forward-facing cameras mounted near or inside the headlight housing for ADAS

A single headlight assembly on a modern SUV can cost $800 to $2,500 for the part alone. On luxury vehicles, that number can hit $4,000+.

What a Collision Does to Headlights

Even a low-speed front impact can:

  • Crack the lens: allows moisture in, which fogs the optics and corrodes wiring
  • Break the mounting tabs: the headlight sits loose, vibrates, and aims wrong
  • Shift the housing: changes beam alignment, blinding oncoming drivers or leaving dark spots
  • Damage the wiring harness: connectors crack, insulation tears, circuits short
  • Misalign ADAS sensors: cameras and sensors in or near the headlight lose their calibration reference point

Repair vs. Replacement

When repair works:

  • Small cracks in the outer lens (some can be sealed if no moisture has entered)
  • Loose mounting that can be re-secured with intact brackets
  • Bulb or LED module replacement within an otherwise undamaged housing

When replacement is needed:

  • The housing is cracked or deformed
  • Mounting tabs are broken (the headlight can’t be aimed properly)
  • Internal reflectors or projector modules are damaged
  • Moisture has entered and corroded components
  • Adaptive headlight motors are seized or broken

Most collision-related headlight damage falls into the replacement category. The forces involved crack housings and break brackets that can’t be reliably repaired. Front impacts that damage headlights often also cause suspension damage that needs to be checked.

OEM vs. Aftermarket Headlights

This is one area where OEM parts matter significantly:

  • OEM headlights match the factory beam pattern, aim correctly with the vehicle’s levelling system, and integrate properly with ADAS sensors
  • Aftermarket headlights are cheaper but often have slightly different beam patterns, mounting points, or lens optics that can cause glare, poor aim, or ADAS calibration failures

For vehicles with adaptive headlights or camera-based ADAS, aftermarket headlight assemblies can cause persistent warning lights and system errors. The cost difference often isn’t worth the headaches.

The ADAS Connection

Here’s what catches many drivers off guard: replacing or re-mounting a headlight on a modern vehicle can require ADAS recalibration.

If your vehicle has a forward-facing camera near the headlight, used for automatic high beams, lane departure warning, or traffic sign recognition, that camera’s position is referenced to the headlight mounting. Move the headlight, and the camera’s reference shifts.

A post-repair scan will flag this. A shop that skips the scan won’t catch it, and you’ll drive away with safety systems that don’t work correctly.

In Alberta, driving with a damaged, missing, or improperly aimed headlight is a traffic violation. The Vehicle Equipment Regulation under the Traffic Safety Act requires:

  • Both headlights functioning
  • Proper aim (not blinding oncoming traffic)
  • Lenses intact (no cracks that distort the beam pattern)
  • Correct colour output (white or amber only)

After a collision repair, a shop should verify headlight aim using an aiming board or electronic aimer as part of the final quality check.

What It Costs

Typical headlight repair and replacement costs after a collision:

  • Bulb replacement only: $30 to $150
  • Sealed lens repair (minor crack): $100 to $300
  • Full headlight assembly replacement (standard halogen): $300 to $800
  • Full headlight assembly replacement (LED/HID projector): $800 to $2,500
  • Full headlight assembly replacement (adaptive/matrix LED): $2,000 to $4,500
  • ADAS recalibration (if applicable): $200 to $500

Insurance covers headlight damage as part of the collision claim. A shop that direct-bills handles the parts ordering, installation, and calibration within the claim.

Getting It Checked

If your headlights took any impact in a collision, even if they still turn on, get them inspected. A light that works but aims wrong is a safety hazard for you and every oncoming driver. Fix Auto Sherwood North in Sherwood Park checks headlight alignment and ADAS sensor positioning on every front-end collision repair.