Collision Repair, Structural, and Glass Considerations
Collision repair directly affects ADAS accuracy. Structural repairs, frame straightening, suspension work, and alignment change sensor mounting geometry, so calibration checks are mandatory afterward. Bumper replacement often relocates radar or corner sensors; windshield replacement relocates the forward camera. Candidates must know that the camera bracket and glass must match OEM specifications-aftermarket glass with different optical properties or bracket geometry can prevent calibration.
Understand the repair sequence: document pre-repair ADAS status, perform structural and body repairs, replace glass and sensors as needed, verify mounting and torque, then calibrate and confirm features operate. Refinishing matters too-thick paint or body filler over a radar behind a bumper cover can attenuate radar signals; metallic paint and certain coatings are known culprits. Questions test these hidden effects.
Traps: assuming calibration is unnecessary if the sensor "looks fine"; using non-OEM glass or brackets; painting over radar apertures; ignoring that a cracked windshield in the camera field disables features; forgetting to recalibrate after alignment. Another trap is the customer expectation-features may be disabled until calibration completes, and the shop must communicate this.
Rule of thumb: any structural, suspension, alignment, bumper, or glass repair is a calibration trigger. Inspect the camera field for cracks and obstructions, verify OEM glass and brackets, and confirm bumper coatings do not block radar before returning the vehicle.