What happens to ADAS after accident repair?
ADAS should be considered as part of accident-repair planning. The relevant requirements depend on the vehicle, affected systems, repair operations and applicable procedure.
After accident repair, the vehicle's ADAS needs to be considered as part of the repair process. That does not mean every accident automatically requires calibration. The requirement depends on the systems fitted to the vehicle, the areas and components affected by the repair, and the applicable vehicle repair procedure. Where relevant, the repair process may require inspection, diagnostic work, calibration or other specified operations before the repair is considered complete.
Why does ADAS matter during accident repair?
Modern vehicles may use cameras, radar, ultrasonic sensors and other sensing technologies in areas that can be involved in accident repair.
The repair therefore needs to consider the ADAS fitted to the vehicle, what has been damaged, removed, refitted, replaced or otherwise affected, and what the applicable procedure requires.
Does every accident mean ADAS calibration?
No. The accident itself is not a universal calibration trigger.
What matters is which systems are fitted, the damage and repair operations involved, the components affected and the applicable repair procedure. Accident repair can make inspection, diagnostics or calibration relevant without making every operation necessary on every vehicle.
Why should ADAS be considered before the repair starts?
ADAS should be considered during repair planning, not only after the body repair has been completed.
Identifying the relevant systems and sensor locations, understanding which areas and components the repair will affect, and checking the applicable procedures can help establish what additional inspection, diagnostic or calibration work may be required.
What if the sensor wasn't damaged?
Visible damage to the sensor is not the only factor considered. Depending on the vehicle and procedure, the repair may involve its mounting, associated parts, nearby components, vehicle geometry, removal or refitting.
This does not mean every repair near a sensor requires calibration. The affected area and repair operation need to be assessed against the applicable procedure.
What if a sensor or associated part is removed and refitted?
Where a sensor or associated part is removed, refitted, replaced or realigned, the applicable procedure determines what is required afterwards.
That may include inspection, diagnostics, calibration or other specified work. Removal or refitting is not a universal calibration trigger.
Why can vehicle geometry matter?
Some ADAS procedures depend on known relationships between sensors and the vehicle. Geometry-related changes or prerequisites may therefore matter to the repair or calibration process.
Not every accident changes vehicle geometry, and not every geometry change means every sensor needs calibration. The exact requirement remains vehicle- and procedure-specific.
Where do diagnostic scans fit?
Diagnostic scanning may help identify relevant systems, faults or available information, support parts of the repair or calibration process, and contribute to verification.
Diagnostics and calibration remain different processes. The related guide below explains that distinction in more detail.
How is the calibration requirement decided?
The applicable repair and calibration procedure determines whether calibration is required, which affected sensor or system is relevant, which prerequisites apply and which method should be used.
Where calibration is required, it should be completed using the specified method. Depending on the vehicle and procedure, that may be static, dynamic or involve more than one stage.
Does a dashboard warning tell you?
A no-warning state does not replace checking the applicable procedure. The absence of an obvious warning does not determine whether calibration is required.
Equally, a warning or fault does not automatically mean calibration is the required repair. The information needs to be assessed in the context of the vehicle, system and repair.
What happens before the vehicle is returned?
As the repair is completed, any ADAS inspection, diagnostic or calibration activity required by the applicable procedure should also be completed. The results can then be verified and documented as applicable as part of the completed repair.
How Horizon supports accident repair
Horizon works with bodyshops and repairers to support ADAS requirements after accident repair. Horizon can identify relevant systems, review applicable calibration requirements, carry out diagnostic scanning within capability and perform required ADAS calibration where within capability.
Relevant work is verified and documented as applicable. Static calibration is carried out at Horizon's Cardiff calibration facility, while dynamic calibration may be carried out mobile where the procedure and conditions allow.
Practical takeaway
Accident repair does not create one universal ADAS calibration rule. The important step is identifying the systems fitted to the vehicle, understanding what the repair affects and following the applicable repair procedure. Where inspection, diagnostics or calibration are required, they form part of completing the repair correctly.
Related Guides
Technical review: Horizon Windscreens
Last reviewed: 9 September 2026