Most of the safety technology on a modern prestige car is invisible. The camera behind the windscreen, the radar behind the badge and the sensors in the bumper corners work quietly until the moment they are needed. ADAS calibration makes sure those sensors are looking exactly where the manufacturer intended. When a repair, a new windscreen or even a wheel alignment shifts them by a fraction of a degree, your car can look flawless and still be aiming its safety systems at the wrong patch of road.
This guide explains what ADAS calibration involves, how static and dynamic calibration differ, and which repair events trigger each, drawing on the Australian repair industry’s code of practice, ANCAP data and recent testing of what happens when calibration is skipped.
What Is ADAS Calibration?
ADAS stands for Advanced Driver Assistance Systems: the features that brake, steer, warn or hold distance on your behalf, including autonomous emergency braking (AEB), lane keep assist, adaptive cruise control, blind spot monitoring and surround-view cameras.
Each feature relies on a sensor that has to know precisely where it is pointing. ADAS calibration aims those sensors to the manufacturer’s specification, measured against the vehicle’s thrust line (the direction the rear wheels are actually steering the car), then stores the new reference values in the control module.
The tolerances are tight because the geometry is unforgiving. A forward camera just one degree off-centre is looking roughly 1.7 metres to the side of its target at 100 metres. That is about half a traffic lane: the difference between tracking the car in front and tracking the one beside it.
On a late-model prestige vehicle, the sensors that need calibrating sit in predictable places:
- Forward camera: behind the windscreen, reading lane markings, signs and pedestrians.
- Front radar: behind the grille, badge or bumper cover, measuring distance for AEB and adaptive cruise.
- Corner radars: inside the bumper corners for blind spot and cross-traffic alerts.
- Surround-view cameras: in the mirrors, grille and tailgate for the 360-degree parking view.
Why It Matters More Every Year
Under Australian Design Rule 98, AEB has been required on all new passenger cars, SUVs and light goods vehicles supplied in Australia since March 2025. ANCAP reports that AEB reduces police-reported crashes by 55%, rear-end crashes by 40% and occupant trauma by 28%.
Those figures assume the sensors are aimed correctly. Prestige models also lean on sensor fusion, blending camera and radar data into a single decision, so one misaligned sensor can degrade every feature that depends on the combined picture.
What the Research Shows About ADAS After a Repair
ANCAP is clear about the limits of its own ratings. It “does not set requirements for, or assess, aftermarket products or vehicle modifications, including repairs”. Once a car has been repaired, whether its safety systems still perform as rated depends on how the repair and calibration were done.
In June 2025 the Australian Automotive Aftermarket Association (AAAA) released Australia’s first ADAS Industry Code of Conduct, reviewed by a panel that included Bosch Australia and I-CAR Australia. The Code calls for pre-repair and post-repair scans, calibration to manufacturer procedures and calibration certificates for the owner. It also takes a firm line on owners who decline a calibration: “the safest approach is to refuse the service.”
What happens when calibration is skipped has now been measured. In a 2025 controlled study, US test and measurement company Ascential Technologies put a 2024 Nissan Altima through NHTSA and IIHS test protocols after a simulated repair:
- No calibration: with the radar and windscreen camera disturbed, AEB did not brake in any test and the car struck the target vehicle every time. The pedestrian target was never detected and lane departure warning never triggered.
- Poor calibration: run with sun glare, a sloped floor and an off-centre target, the systems appeared to work, but lane departure alerts came late, with less than half the warning margin of a correct calibration.
- Correct calibration: an OEM-compliant calibration restored factory-level performance.
A car with misaligned sensors usually drives normally, and nothing feels wrong until the system is needed. For more on what is at stake, read whether a luxury car is still safe if ADAS isn’t calibrated.
Static vs Dynamic ADAS Calibration
There are two calibration methods, and the vehicle manufacturer, not the workshop, decides which one each sensor needs. Some procedures use one, some the other, and many require both.
Static calibration
Static calibration happens in the workshop with the car stationary. The thrust line is aligned first, then manufacturer-specific targets are placed at set distances and heights from the sensor while a diagnostic tool runs the routine. The floor must be level, lighting controlled with no glare or reflective clutter, and the car set to specification for tyre pressures, ride height and fuel load.
Dynamic calibration
Dynamic calibration happens on the road. The technician puts the system into calibration mode and holds a specified speed for a set time while the sensor learns its alignment from real lane markings and traffic. Heavy rain, low sun or worn line markings can stop a dynamic routine from completing.
When your car needs both
Radar systems commonly need both: aimed statically in the bay, then verified on the road. As the Ascential results show, a calibration carried out in the wrong conditions can still finish and leave the system switched on, just not working accurately.
When Does Your Car Need ADAS Calibration?
Any work that moves a sensor, disturbs its mounting or changes the geometry it measures from can trigger calibration. The table maps common repair events to the sensors affected and the method usually involved. The manufacturer’s procedure for your exact model always has the final say.
| Repair event | Sensors affected | Usual calibration method |
|---|---|---|
| Windscreen replacement | Forward camera | Static targets, dynamic drive or both, depending on the make |
| Front bumper removal, repair or respray | Front radar, front camera and parking sensors | Static radar aiming, often followed by a dynamic verification drive |
| Rear bumper or quarter panel repair | Blind spot and cross-traffic radars | Static or dynamic, depending on the make |
| Side mirror replacement | Surround-view and blind spot cameras | Static, using patterned floor targets around the car |
| Wheel alignment, suspension or ride height work | Steering angle sensor and forward-facing sensors | Steering angle reset, then camera and radar calibration where the manufacturer requires it |
| Structural or chassis repairs | Every sensor that references the body | Static once the body is measured back to factory dimensions, then on-road verification |
| Sensor, bracket, lamp or module replacement | The replaced component and anything it feeds | Coding and initialisation, then static or dynamic calibration |
The bumper respray row surprises most owners. Radar signals pass through the bumper cover, so paint film thickness over the radar zone changes how the signal travels. A refinish over a radar sensor has to meet the manufacturer’s paint specification as well as the calibration procedure, which is why luxury paint refinishing and calibration should be planned as one job.
Structural repairs are the broadest trigger. Once a body has been measured and restored through precision panel and structural repairs, every sensor that uses it as a reference point needs checking.
Signs your ADAS may need calibrating
Repairs aren’t the only trigger. The AAAA Code notes that erratic behaviour from adaptive cruise, AEB or lane keep assist may indicate a calibration check is needed. Have the sensors checked if you notice:
- A driver assistance warning light or “system unavailable” message
- Lane keep assist nudging the car towards one side of the lane
- Collision warnings or braking with nothing ahead
- Adaptive cruise losing the car in front, or reacting late
- A surround-view image that looks skewed at the seams
What a Proper Calibration Includes
Because a car with misaligned sensors can feel completely normal, the real proof of a correct calibration is the documentation. A complete ADAS calibration service should include:
- Pre-scan: reading every module for stored faults before work begins.
- Geometry check: confirming alignment, ride height and tyre pressures, because a biased thrust line produces a biased calibration.
- OEM procedure: manufacturer software, the correct targets and the specified static, dynamic or combined routine.
- Post-scan and function check: confirming no faults remain and each system responds as designed.
- Documentation: a calibration certificate and scan reports to keep with the car’s records.
If a repairer cannot show you that paperwork, treat the calibration as unconfirmed.
Frequently Asked Questions
How long does ADAS calibration take?
Most calibrations take one to three hours, depending on the model, how many systems are involved and whether a dynamic road drive is required. Allow extra time if the wheel alignment needs correcting first, or if weather delays a dynamic drive.
Do I need ADAS calibration after a wheel alignment?
Sometimes. An alignment changes the thrust line that forward cameras and radar use as their reference. The AAAA Code notes that not every alignment requires calibration, but some manufacturers mandate it after one. Even when full recalibration isn’t required, the steering angle sensor often needs resetting.
Is calibration necessary after a windscreen replacement?
If your car has a forward camera mounted to the windscreen, yes. A new screen changes the camera’s mounting position and the glass it looks through, even when the replacement is a genuine part fitted perfectly.
Will a warning light tell me if my ADAS needs calibrating?
Not reliably. A sensor knocked out of position often keeps working without logging a fault, just aimed in the wrong place. In the Ascential testing, the poorly calibrated car appeared to function normally while giving late warnings. A post-repair scan and calibration certificate are the only real confirmation.
Does a repair affect my car’s ANCAP safety rating?
The rating stays with the vehicle for its lifetime, but ANCAP does not assess repairs. The performance behind that rating, particularly for AEB and lane support, depends on the sensors being aimed as they were when the car was tested. Correct calibration is what keeps the real-world car matching the rated one.
Book an ADAS Check
If your car has had collision repairs, a new windscreen, suspension or alignment work, or its driver assistance features have started behaving differently, have the sensors checked against the manufacturer’s specification. AMA Prestige calibrates prestige and luxury vehicles in flat-floor bays using manufacturer software and targets, runs static and dynamic routines as the procedure requires, and documents every result at handover.
Start with an online assessment, or get in touch with our team at one of our repair centres in Melbourne, Brisbane, the Gold Coast and the Central Coast.
