Active system faults
Internal module, communication, voltage, steering, braking, engine, suspension, or driver-support faults may have to be resolved before the calibration routine will begin.
AutoLab diagnostic field guide
Why an ADAS calibration will not start.
A calibration target cannot repair an internal module fault, correct the wrong part, straighten a damaged bracket, restore network communication, or remove an obstruction. The vehicle has to meet its prerequisites first.
Six common blockers
What has to be right before aiming begins.
Requirements vary by vehicle, but most failed starts fit into one or more of these categories.
Incorrect or damaged mounting
A shifted bracket, damaged support, incorrect grille, glass-mounted camera bracket, ride-height change, or body-repair error can place the sensor outside its allowable starting position.
Wrong or unconfigured parts
A replacement camera or radar may have the wrong part number, coding, dataset, software level, adaptations, component protection, or vehicle configuration.
Blocked sensor vision
Haze, contamination, coatings, stickers, incorrect glass, grille material, emblem damage, moisture, or an obstruction can prevent a camera or radar from obtaining a usable view.
Vehicle geometry is not ready
Alignment, tire pressure, ride height, loading, steering-angle status, fuel level, floor condition, and target distance may be prerequisites rather than optional details.
The selected procedure is wrong
Some vehicles use a static target, some use a controlled dynamic drive, and some require both. The exact system, equipment, and repair history determine the procedure.
Before another attempt
Collect the information that changes the diagnosis.
Sending the complete context before the appointment helps separate a calibration-ready vehicle from one that needs diagnosis, parts, programming, alignment, or repair first.
- 01
Full VIN and exact vehicle equipment
- 02
Every dashboard warning—not only the ADAS message
- 03
Complete pre-scan report and current DTC status
- 04
Recent collision, glass, alignment, suspension, or electrical work
- 05
Part numbers for replacement camera, radar, bracket, grille, or glass
- 06
Coding, programming, initialization, or calibration already attempted
The decision
Calibration-ready or diagnosis-first?
Proceed with the required procedure
The correct parts are installed, faults and geometry meet the manufacturer's prerequisites, the sensor view is clear, and the vehicle is communicating normally.
Resolve the blocking condition
Diagnose the fault, correct mounting or alignment, configure the module, repair communication, or restore the sensor's view before attempting calibration again.
Start with the vehicle
Is your calibration procedure refusing to begin?
Start the assessment with the VIN, full scan report, dashboard warning, and what was repaired or replaced. We’ll help identify the prerequisite that may be stopping the procedure.