With the baseline confirmed, use OEM decision logic to select the ADAS Calibration method for Rolls-Royce Phantom. Static calibration validates sensor geometry in a controlled environment using targets and measured relationships, so it relies on correct target placement, centerline references, lighting, and floor-level requirements. Dynamic calibration completes learning through a defined drive cycle, so it relies on maintaining an OEM speed window and driving on roads with clear lane markings under acceptable conditions. Some Rolls-Royce Phantom configurations require both methods in sequence, because static establishes baseline alignment while dynamic finalizes learning under motion; the order and prerequisites are not interchangeable. Initialization/relearn routines may be specified after certain resets (steering angle relearn, yaw-rate relearn, module initialization after power loss), but initialization is not a substitute when the OEM calls for full calibration after windshield work or a radar bracket disturbance. Use scan evidence and the VIN-applicable procedure to decide; if DTCs specify calibration required, follow the routine tied to those codes and that sensor package. Confirm prerequisites before starting: do not run static without correct target distances and a level floor, and do not run dynamic on routes that cannot support lane quality or the speed window. Correct physical mounting issues first; calibration should validate correct geometry, not compensate for it.