With the baseline confirmed, use OEM decision logic to select the ADAS Calibration method for Ram 3500 Chassis Cab. 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 Ram 3500 Chassis Cab 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.