We replace windshields every day out of our Tempe and Chandler shops. The question we hear more than anything: "Do I need that calibration thing too?" If your vehicle has a camera mounted near the rearview mirror — and most 2018-or-newer cars do — yes. Here's why it matters.
What Is ADAS, Exactly?
ADAS stands for Advanced Driver Assistance Systems. It covers the safety features in newer vehicles: lane departure warning, automatic emergency braking, adaptive cruise control, forward collision alert. Most of them run off a small camera stuck to your windshield, right behind the rearview mirror. Some cars also have radar in the bumper or side mirrors, but the windshield camera is the one we deal with.
When we remove your old windshield and install a new one, that camera gets disturbed. Even a fraction-of-a-degree difference in the angle changes where the camera "thinks" it's looking. That's where calibration comes in — it resets the camera so the system works correctly.
Which Vehicles Need ADAS Calibration?
General rule: if it's 2018 or newer and has a forward-facing camera on the windshield, it needs calibration. That's a lot of cars on the road in Phoenix right now. Toyota, Honda, Subaru, Ford, Chevy — they all went standard with these systems around 2018. BMW, Mercedes, and Volvo had them a few years earlier.
If your car has any of these features, it almost certainly needs calibration after a windshield swap: lane departure warning, lane keep assist, automatic emergency braking, adaptive cruise control, or a heads-up display. When you call us, we'll look up your VIN and tell you exactly what your vehicle requires before we even schedule the appointment.
What Happens If You Skip Calibration?
We've had customers come in after getting a windshield done at another shop where calibration wasn't even mentioned. Their lane departure system was pulling them toward the shoulder. Their automatic braking was triggering randomly. One guy's forward collision warning was going off every time he drove under an overpass.
When the camera is misaligned, these safety systems don't just stop working — they work incorrectly. That's arguably worse than not having them at all. Your emergency braking might not fire when it should. Your lane keeping might steer you the wrong direction. And in most cases, you'll get a persistent warning light on the dash that won't go away until calibration is done properly.
Static vs. Dynamic Calibration
There are two types of ADAS calibration. Static calibration is done in the shop using a specialized target that we position in front of the vehicle at a precise distance and height. The system's diagnostic tool communicates with the camera and resets its reference points. This takes about 30 to 45 minutes after the windshield is installed.
Dynamic calibration requires driving the vehicle at a specific speed on well-marked roads so the camera can relearn lane markings and road features. Some vehicles need both static and dynamic calibration. We handle both types and we'll know which one your car needs before we start the job.
This Is a Safety Issue, Not an Upsell
We get it — when someone tells you there's an extra step, it can feel like an upsell. It's not. The vehicle manufacturer requires calibration after windshield replacement. These systems are there to keep you from rear-ending someone on the I-10 at 75 mph. Emergency braking, pedestrian detection, lane keeping — none of it works right if the camera is off by even half a degree.
We won't let a vehicle leave our shop without calibration if it needs it. That's not us being pushy — it's us doing the job right.
Does Insurance Cover ADAS Calibration?
Usually, yes. If your windshield replacement is covered under Arizona's zero-deductible glass law, calibration is typically included. Insurance companies get it — you can't replace the windshield and leave the camera pointing the wrong direction. That's not a complete job. We handle the insurance paperwork on our end, so you don't have to call anyone.
We Do Calibration On-Site
A lot of shops replace your windshield and then tell you to go to the dealership for calibration. That's another appointment, maybe a week-long wait, and sometimes a $300+ bill on top. We do calibration right here at our Tempe and Chandler shops. Same visit. You drive away and everything works.
If you've got a cracked windshield and you're not sure whether your vehicle needs calibration, give us a call at (480) 252-0059 or fill out our contact form. We'll look up your vehicle and let you know exactly what you need.