To correct errors in the original code. As built code is written by humans, and as such, it is not always perfect. There may be errors in the code that can cause problems with the vehicle. Reprogramming the code can correct these errors and improve the performance of the vehicle.
To update the code to reflect changes in the vehicle. As vehicles are updated with new features, the as built code may need to be updated as well. This is to ensure that the vehicle's features work properly and that the vehicle is compliant with the latest regulations.
To enable new features. Sometimes, new features can be enabled by reprogramming the as built code. This is a common practice for enabling features that are not available in the vehicle's original configuration.
To troubleshoot problems. If a vehicle is experiencing problems, reprogramming the as built code can sometimes help to troubleshoot the problem. This is because the code can provide information about the vehicle's operation that can help technicians to identify the source of the problem.
Overall, reprogramming and configuring as built code is an important part of vehicle maintenance and repair. It can help to improve the performance of the vehicle, enable new features, and troubleshoot problems.
Here are some specific examples of when reprogramming and configuring as built code might be necessary:
To correct a software bug that is causing the vehicle to malfunction.
To update the code to reflect changes in the vehicle's emissions system.
To enable a new feature that was added to the vehicle in a later model year.
To troubleshoot a problem that the technician is unable to diagnose using other methods.
It is important to note that reprogramming and configuring as built code should only be done by qualified technicians. If you are not sure whether or not your vehicle needs its as built code reprogrammed, you should consult with a qualified technician.