Why are calibration checks essential after ADAS repairs?

• A. To identify potential warranty issues with non-safety components.
• B. To document repair costs and parts used.
• C. To verify that the calibration data is consistent with factory specifications.
• D. To ensure sensors and cameras are properly aligned and functioning for safety and liability.

Answer: (D)

Calibration checks after ADAS repairs are about making sure the vehicle’s sensors and cameras are exactly where they should be and are reading correctly. ADAS relies on these sensors to measure distance, detect lanes, and identify hazards. If a bumper, hood, or sensor mount was disturbed during repair, the sensors can be misaligned, leading to incorrect readings or even the system misbehaving. Verifying alignment and proper function ensures features like automatic braking, adaptive cruise control, and lane-keeping operate as designed.

This matters for safety—miscalibrated sensors can cause false warnings, unnecessary activations, or missed detections, increasing crash risk. It also matters for liability and warranty: proper calibration provides evidence that the system is in spec and safe to rely on, reducing the shop’s exposure if an incident occurs later.