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J&C Autos

ADAS Calibration

Most modern cars rely on cameras and sensors for safety features like emergency braking and lane assist. After a repair, these often need recalibrating so they see the road correctly. Our IMI-accredited technicians carry out this calibration as part of your repair at our Maidenhead workshop.

What's Included

  • Calibration of front cameras, radar and sensors
  • Carried out after windscreen, bumper, alignment and accident repairs
  • Three IMI-accredited ADAS Calibration Technicians
  • Repair and calibration handled in one place

What is ADAS?

ADAS stands for Advanced Driver Assistance Systems — the cameras, radar and sensors that help keep you safe on the road. You'll find them on most cars built in the last few years, often without realising.

  • Autonomous emergency braking (AEB)
  • Lane keep assist and lane departure warning
  • Adaptive cruise control
  • Blind spot monitoring
  • Parking sensors and cameras
  • Traffic sign recognition

When does my car need calibrating?

The cameras and sensors are set to precise angles. If one is knocked, moved or replaced — even by a few millimetres — it can misjudge distances or miss a hazard. Calibration is usually needed after:

  • Windscreen replacement (the front camera often sits behind the glass)
  • Front or rear bumper and grille repairs
  • Wheel alignment, tracking or suspension work
  • Replacing a camera, radar unit or sensor
  • Any accident, even a minor bump
  • A driver-assistance warning light appearing on the dashboard

Why a tiny error matters

Cameras and radar are aimed to within a fraction of a degree. Out by just 1°, a camera can misread the lane lines or misjudge how far away the car in front is.

Top-down diagram: a calibrated camera looks straight down the lane; a camera out by one degree looks off to one side and can misread the lane lines.Side-view diagram: a camera tilted by one degree misjudges the distance to the road ahead, which can affect when automatic emergency braking reacts.

How we calibrate

Your car is lined up on its centre line and a calibration target is set at the exact distance and height the manufacturer specifies. Our diagnostic equipment then re-aligns the camera or sensor to the target.

Top-down diagram of a calibration bay: the car lined up on its centre line facing a calibration target placed at the manufacturer's exact distance.

Done the manufacturer's way

We follow each vehicle manufacturer's own repair and calibration methods — the exact procedures, targets and measurements they set out for your make and model. No shortcuts and no guesswork, so your car's safety systems work just as they did when it left the factory.

  • Manufacturer-specified repair and calibration procedures
  • Targets set at the exact distance and height for your model
  • No shortcuts or guesswork
  • Safety systems back to factory standard

Why accreditation matters

ADAS calibration is safety-critical work, so it pays to know who's doing it. Three of our team are IMI-accredited ADAS Calibration Technicians. IMI Accreditation is the motor industry's standard benchmark of current competence, governed by the Institute of the Motor Industry, and accredited technicians are listed on the IMI's public Professional Register.

Common Questions

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Send us a few photos of the damage and we'll advise on the best next step.

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