Much has changed in the 75 years we’ve replaced and maintained auto glass. For example, windshield calibration is now required after windshield repairs or replacement. Unlike most classic cars, today’s vehicles have different variations of Advanced Driver Assistance Systems (ADAS) that rely on cameras and sensors.
Dual ADAS calibration takes about three hours, starting with static calibration and then dynamic calibration. It may take an extra hour if technicians have to unscrew your bumper to access the radar sensor. The static calibration takes between 30 minutes and two hours, depending on your auto manufacturer’s instructions.
ADAS calibration involves a lot of work and details. Only technicians with specialized tools, advanced software, and the latest know-how can handle it. This post should explain how the process works, why it’s necessary for your safety, and how long it will take.
What Is ADAS and Why Do We Need It?
ADAS describes the electronic systems in modern vehicles whose sole purpose is to automate safety features and enhance your driving experience. These systems use:
- Sensors.
- Cameras.
- Radar.
- Lidar.
- GPS.
In general, ADAS can process information from the outside world in real time and use it to regulate acceleration, braking, steering, and other functions. These systems aim to prevent collisions and reduce the severity of accidents.
Some examples of ADAS features include:
- Adaptive cruise control.
- Lane departure warning.
- Forward collision warning.
- Blind-spot detection.
- Automatic emergency braking.
- Parking assistance.
What Is ADAS Calibration and Why Is It Necessary?
ADAS calibration entails correctly configuring all sensors and cameras in your vehicle to meet the manufacturer’s specifications. It’s essential for safety and ensures that ADAS features function accurately and reliably.
For example, if your vehicle has an automatic emergency braking system, it relies on a camera or radar sensor to detect potential collisions. After detection, it automatically applies the brakes to prevent a crash.
If these sensors aren’t correctly calibrated, they may detect objects accurately, leading to potential accidents. It’s dangerous to drive thinking that your vehicle has these safety features when, in fact, they aren’t functioning properly due to poor calibration.
What Is Windshield Calibration?
Windshield calibration is a type of ADAS calibration that involves calibrating cameras and sensors mounted on the windshield. The windshield is an essential component of these systems, providing a clear view of the road ahead.
During windshield replacement or repair, it’s crucial to recalibrate all ADAS components mounted on the windshield. This process ensures that the camera’s field of view is precisely aligned with the vehicle’s position, enabling accurate readings and functioning of the safety features.
It’s essential to note that even minor changes in windshield placement due to repairs or replacements can affect ADAS calibration.
Is ADAS Calibration and Windshield Calibration the Same Thing?
While windshield calibration is a type of ADAS calibration, they’re not the same. ADAS calibration involves calibrating all sensors and cameras in the vehicle, including those mounted on the windshield.
So, ADAS systems can detect blind spots while windshield calibration mostly offers a forward view.
Windshield calibration focuses explicitly on aligning and calibrating components mounted on the windshield, such as cameras and sensors for systems like lane departure warning and automatic emergency braking.
How Long Does It Take to Calibrate a Windshield?
The time required for windshield calibration varies depending on the vehicle, the ADAS system type, and the calibration level needed. On average, technicians use 37 minutes to an hour.
For example, calibrating a lane departure warning camera may take less time than calibrating a 360-degree camera system. Similarly, older vehicles with basic ADAS features may take less time to calibrate than newer vehicles with advanced safety systems.
What Are Some Common Scenarios Requiring ADAS Calibration
As we said, alignment is a big issue in ADAS calibration. Something as simple as disconnecting the car battery or replacing a windshield can affect sensor alignment.
Here are some common scenarios that may require ADAS calibration:
1. Veering off the Road and Hitting a Curb
Minor accidents like bumping into a pothole or minor fender-benders can affect calibration. In these scenarios, sensors may shift out of alignment, leading to incorrect readings.
2. Replacing Windshields
Windshield replacements are common after accidents or due to damage from debris. However, many drivers don’t know that the windshield also plays a crucial role in ADAS calibration.
Windshields can have built-in cameras and sensors for ADAS features. So, it’s paramount to recalibrate the sensors after a windshield replacement.
3. Replacing or Adjusting Suspension Components
Suspension components like control arms, tie rods, and steering knuckles significantly impact sensor alignment. A simple adjustment or replacement of these parts can throw off the calibration, affecting the accuracy of ADAS features.
4. Modifying Ride Height
Lowering or raising your vehicle’s ride height can also affect ADAS calibration. Any vehicle height change, whether from aftermarket modifications or adjustments for specific driving conditions, can cause sensors to misalign.
5. Replacing Vehicle Battery
Disconnecting and reconnecting your vehicle’s battery can also impact sensor alignment. Some sensors require power to remain active during calibration, and a sudden loss of power can disrupt the process.
6. General Maintenance and Servicing
Regular vehicle maintenance and servicing, such as wheel alignments or tire rotations, can also affect ADAS calibration. If not done correctly, these routine tasks can cause sensors to misalign and affect the accuracy of ADAS features.
Inform your mechanic about any ADAS features in your vehicle to ensure proper calibration after maintenance.
7. Driving on Rough Roads
Rough roads and off-road terrain can cause sensors and cameras to shift out of alignment. The constant bumps and jolts can loosen or damage components, affecting the accuracy of ADAS features.
8. Extreme Weather Conditions
Heavy rain, snow, or extreme heat can also impact sensor accuracy. Water and debris on sensors can affect their function, while extreme temperatures can cause components to expand or contract, throwing off alignment.
Factors Affecting ADAS Calibration Time
Let’s review some of the factors affecting how long it takes to calibrate a car’s ADAS system.
1. Vehicle Type and Model
Different vehicles have varying levels of ADAS system complexity, which affects the time it takes to calibrate them. For example, a vehicle with multiple cameras and sensors may take longer to calibrate than one with fewer ADAS features.
Moreover, some car models require mechanics to disassemble certain components to access the sensors, which can add time to the calibration process.
2. Number of Sensors
The more sensors your car has, the longer the calibration process will take. Each sensor needs to be aligned precisely for the system to function accurately. Remember, even one misaligned sensor can affect the overall performance.
3. The extent of Damage or Misalignment
If your car’s sensors or cameras are damaged, calibrating the system may take longer. Sometimes, a damaged sensor may need replacement, adding time and cost to the calibration process.
4. ADAS Calibration Method Used
As noted earlier, there are static and dynamic calibration methods. Proper calibration requires driving 5-25 miles and could take about an hour. Dual calibration couples static and dynamic methods, resulting in more accurate calibration, but it also takes longer.
Additionally, the equipment and tools used for calibration can also affect how long it takes. High-quality, advanced equipment may result in quicker and more accurate calibrations.
5. Technician Experience and Expertise
A skilled and experienced technician will likely be more efficient and accurate in the calibration process than a novice. The opposite applies for inexperienced rookies.
Don’t Be in a Rush During ADAS Calibration
ADAS calibration is crucial to car maintenance, so you should take your time with it. It’s a complex process that requires precision and accuracy to ensure your safety and that of others on the road.
Don’t rush and risk using misaligned sensors, compromising driving safety. Also, regularly scheduled maintenance for ADAS systems can help catch any issues early on, preventing more significant problems in the future.
Take your time to find a reputable and experienced technician who uses high-quality calibration equipment. You want to trust that your car’s ADAS system is working properly, so get an auto glass technician you can trust.
