Yes, a used instrument cluster (also known as a dashboard or speedometer) needs to be programmed in order to work properly. This is because the device contains numerous components that are all interconnected with one another and must be configured for proper operation. Most automakers use sophisticated software that can read the information stored in an instrument cluster and then program it accordingly so that all of its functions operate correctly. Depending on the vehicle, this could involve programming various aspects such as odometer readings, fuel level indications, tachometer settings and more. To ensure your vehicle's safety and performance, it is important to have your used instrument cluster professionally reprogrammed whenever replacing it with a new or used part.