ADAS Terminology

ADAS TERMS & DEFINITIONS

Adaptive Cruise Control (ACC)

Automatically adjusts the vehicle’s speed to maintain safe distance. Uses radar and/or camera systems.

Automatic Emergency Braking (AEB)

Detects potential frontal collisions and applies brakes automatically if the driver doesn’t react.

Blind Spot Monitoring (BSM)

Alerts the driver when a vehicle is in the blind spot using radar-based side sensors.

Lane Departure Warning (LDW)

Notifies the driver when the vehicle crosses lane markings without signaling.

Lane Keeping Assist (LKA)

Takes corrective steering action to keep the vehicle in its lane.

Rear Cross-Traffic Alert (RCTA)

Warns the driver of vehicles approaching from the sides when reversing out of a parking spot.

Driver Monitoring System (DMS)

In-cabin camera system that detects driver fatigue or distraction.

Surround View System / 360 Camera

Stitches together feeds from multiple cameras around the car to give a bird’s-eye view.

Sensor Fusion

Combines data from multiple sensors (e.g., radar + camera) to make smarter ADAS decisions.

 

TOOLS USED IN ADAS CALIBRATIONS

1. Static Calibration Target Boards

• Manufacturer-specific boards used for lane-keeping systems, FCW, LDW.

• Positioned at precise distances and angles from the vehicle.

• Common Systems: Bosch DAS 3000, Autel IA800, Texa RCCS3.

2. Diagnostic Scan Tools (OEM or Aftermarket)

• Interfaces with the vehicle to initiate calibration routines.

• Reads fault codes and monitors sensor health.

• Popular Brands: Autel, Snap-on, Bosch, Launch, OEM tools like Honda i-HDS, Toyota Techstream.

3. Laser Alignment Tools

• Ensure vehicle is centered and aligned with target boards.

• Used for accurate target positioning on the X/Y axis.

4. Digital Measuring Systems / Frame Racks

• Used when structural repairs are involved.

• Ensures ADAS sensors are aligned relative to factory specs.

5. Headlight Aiming Tools

• For vehicles with adaptive headlights that need recalibration post-repair.

6. Wheel Alignment Systems

• Full 4-wheel alignment is often required before ADAS calibration.

• Off-spec alignment = failed or inaccurate calibration.

7. Calibration Software

• Often proprietary and part of the scan tool.

• Runs guided procedures for static and dynamic calibration.

 

ADAS CALIBRATION PROCEDURES

1. Pre-Calibration Checklist

• Ensure vehicle is on a level surface

• Tire pressure, ride height, and alignment must be correct

• All body work and sensor installation must be complete

• Clear any DTCs related to ADAS before beginning

2. Static Calibration

Performed inside a shop using target boards and special equipment.

Typical Steps:

• Place vehicle in calibration zone per OEM specs

• Position target board at the exact height, distance, and centerline

• Connect scan tool and initiate the calibration routine

• Monitor system for successful confirmation

• Print or save a calibration report for records

3. Dynamic Calibration

Performed during a test drive.

Typical Steps:

• Connect scan tool and activate dynamic calibration

• Drive the vehicle at specific speeds (often 25–45 mph) on a straight road

• Calibration completes once sensor collects enough real-world data

• Some systems require driving with lane markings and surrounding traffic

4. Post-Calibration Verification

• Run a full system scan to verify success

• Ensure no warning lights or ADAS-related DTCs remain

• Provide calibration report to customer or insurance company

Common Situations Requiring ADAS Calibration

• Windshield replacement (camera recalibration)

• Front bumper replacement (radar sensor)

• Wheel alignment or suspension repair

• Airbag deployment

• Collision damage or frame work

• Sensor removal and reinstallation

• Software updates affecting ADAS modules

Calibration Report

• A calibration is not complete without documentation.

• Reports should include:

  • Vehicle info

  • System(s) calibrated

  • Targets and tools used

  • Before/after scan results

  • Technician ID and date