What programming changes
Programming involves applying supported software or configuration to a control unit. The process depends on the vehicle and module and can include configuring the unit for the car’s equipment.
What cloning transfers
Cloning transfers supported data from the original unit to compatible hardware. The procedure depends on what can be read and on the match between the units. If the original is badly damaged, another route may be needed.
Before buying a module
Keep the original unit and record its part numbers. Ask whether the proposed replacement is suitable before buying it. Share the original symptoms too, since a wiring or supply fault can look like a failed module.