Why Your Windshield Camera and ADAS Sensors Need Recalibration After Replacement
Windshield repair and replacement may seem like relatively simple auto body shop services. And they are, comparatively speaking. However, with more modern vehicles, there’s an added wrinkle to the process. And that is ADAS calibration.
What is ADAS windshield calibration?
ADAS windshield calibration involves realigning the forward-facing camera and sensors mounted behind your windshield. This is necessary to ensure they accurately interpret the road and potential obstacles after a replacement or any change in geometry. ADAS, short for advanced driver-assistance systems, covers features such as adaptive cruise control, automatic emergency braking, and lane-keeping assist. Calibration restores the camera’s precise angle, enabling those features to work as intended.
| ADAS Features | What It Does | Risk If Miscalibrated |
|---|---|---|
| Adaptive Cruise Control | Hold a set distance from the vehicle ahead | Misread following distance |
| Automatic Emergency Braking | Detects obstacles and brakes to avoid or reduce impact | May not engage when needed |
| Lane-Keeping Assist | Detects lane markings and helps keep your vehicle centred | Warning misfire or fail |
| Traffic Sign Recognition | Reads speed limits and other road signs | Misread or misses signs |
Is recalibration required after windshield replacement?
Yes, most original equipment manufacturers (OEMs) require recalibration after a windshield replacement. This is because even a slight shift in camera position can throw off what the system sees. Skipping recalibration can leave safety features unreliable and may complicate warranty or insurance claims. It’s important to check your owner’s manual to find out exactly what your vehicle’s manufacturer recommends for ADAS after a windshield repair or replacement.
Improper or skipped calibration can cause unease while driving. You may feel that something is off, but can’t detect it. Maybe the lane-keeping assist function means your vehicle is perpetually off-centre. Or maybe you’re receiving alerts when there’s no sign of danger. And then there are the less likely, but still very possible, horror scenarios.
The ADAS sensors might be so far off that they impair cruise control or automatic braking so much that you wind up in a crash. In that scenario, waiting at the collision repair shop is the least of your worries; better there than waiting in the emergency room.
At this point, you might be so worried about the windshield replacement ramifications on ADAS that you’re inclined to just put the whole thing off. Unfortunately, that is not a wise solution. It’s not smart to gamble on how long you can drive with a cracked windshield. Cracks can grow, and a crack that necessitates a simple-and more affordable-windshield repair today could easily expand and require a full windshield replacement next week. This complicates the job at the auto body shop, and it might complicate the required ADAS recalibration afterwards.
What happens if ADAS calibration is skipped?
If collision repair techs skip ADAS calibration, the safety features that depend on the camera and sensors can behave unpredictably or stop working altogether. Common symptoms of a misfiring ADAS include:
- Lane-departure warnings trigger at the wrong times or fail to sound.
- Automatic emergency braking fails to engage when you need it.
- Adaptive cruise control misreads the distance between you and the vehicle ahead.
- You don’t receive any warnings at all.
Windshield repair/replacement issues
You may wonder why replacing or repairing a windshield can cause any ADAS issues at all. Some think it’s because the force of the impact that caused the crack or damage in the windshield knocks the sensors or camera out of calibration. While this can happen, it’s more often a factor of the work at the collision repair shop itself.
When repairing or replacing a cracked windshield, it’s easy to wind up with new glass that isn’t in the precise same position as the old glass. And for most of automotive history this wasn’t a huge issue. As long as the glass was secure, the windshield was fine. But now there are strict geometry allowances that OEM repair techs must reckon with.
A new windshield can sit at a slightly different angle than the old one. This means the camera ends up reading the road from a position the system doesn’t expect. And what’s more concerning is that the system won’t always tell you something’s askew.
If your windshield was replaced without recalibration, your safety systems may not work even if no warning light is on. That’s why many auto body shops now include ADAS calibration as part of a post-repair vehicle safety inspection.
What does ADAS recalibration involve?
ADAS recalibration uses static calibration, dynamic calibration, or both, depending on the manufacturer. Static calibration places targets at measured distances in a controlled bay, so the camera can be aligned to them. Dynamic calibration has a technician drive the vehicle at set speeds so that the system recalibrates on the road. Either way, technicians need OEM repair tools and the manufacturer’s prescribed procedure for your exact make and model.
Some manufacturers require both methods, and a dynamic calibration drive can fail if the test driver doesn’t maintain the required speed. This isn’t a procedure to improvise, which is why auto body shops follow OEM repair instructions step by step.
How long does ADAS recalibration take, and how much does it cost?
ADAS recalibration might take only 30 minutes, or it might require a few hours. As for cost, numbers vary and a collision repair shop is very unlikely to charge a flat fee for ADAS calibration, because every vehicle model and ADAS feature are different.
The Globe and Mail reporting cited one provider charging an average of about $150 on top of windshield repair. Other websites and auto body shops cite numbers such as $350 to $500 on top of a repair bill. However, these typically discuss ADAS calibration in relation to other types of collision repair, such as bumper replacements.
The takeaway
If you drive a vehicle with ADAS sensors or cameras in or near the windshield, you can expect to pay a couple hundred dollars more for a windshield replacement. However, if the number you’re quoted is much higher than that, ask for a specific breakdown from your auto body shop. Time and cost both depend on your vehicle’s make, how many systems need recalibrating, and whether the manufacturer calls for static calibration, dynamic calibration, or both.
As for insurance, coverage is less predictable. Not every insurer pays the extra calibration cost, even when the glass itself is covered. It’s prudent to ask your insurer before you book. To learn more, visit our windshield repair service page.
Can any auto body shop perform ADAS recalibration?
No. ADAS calibration requires OEM diagnostic tools, calibration targets, and a controlled, level space that many shops don’t have. That’s why it’s critical to go to a certified collision repair shop. It will have the necessary trained technicians and manufacturer procedures to meet the ADAS requirements. Ask which method your vehicle needs and whether you’ll receive a post-calibration report.
Need a windshield repair? Make sure your ADAS sensors are properly calibrated. Find a CSN Collision shop near you.
