How to Use 431 to Remove Component Protection on Audi?
2 Answers
Audi's component protection after replacing a control unit means the control unit is not recognized by the system by default and requires online removal. To remove component protection, you need to go to an Audi 4S dealership for online matching.
I've personally operated the 431 diagnostic device to remove Audi's component protection several times, and the steps are quite straightforward. First, connect the 431 to the car's OBD port, usually located under the steering wheel, and power on the device. Then, navigate through the device menu to select the Audi model and enter the expert functions, where you'll find the component protection option. Initiate the removal process, ensuring the vehicle's ignition is in the ON position but without starting the engine. Wait for the system to prompt for necessary information, such as the new component code or preset password, which is typically required after installing a new module to lift the protection. Once completed, restart the vehicle to check if the headlights or other electrical components are functioning properly. Component protection is Audi's security design to prevent the use of unauthorized parts, so be careful not to make mistakes when removing it. If it doesn't succeed on the first try, check if the device connection is secure or if the battery voltage is sufficient.
