<h1>2010 Audi S4 Keyless Entry Remote Fob (Smart Key)</h1> <p><font size="3"><b>Important Notice:</b> The 2010 Audi S4 is not equipped with onboard programming capabilities for smart key remote fobs. Programming must be carried out by a qualified technician using Audi-compatible diagnostic equipment. </font></p> <p><font size="3"><b>Programming Procedure:</b> </font></p> <ul> <li><font size="3">Step 1: Ensure the vehicle is turned off and all doors are securely closed. </font></li> <li><font size="3">Step 2: A certified technician will connect a professional diagnostic scanner to the vehicle’s OBD-II port to access the immobilizer and security systems. </font></li> <li><font size="3">Step 3: The new smart key will be introduced to the vehicle’s ECU using secure coding protocols specific to Audi systems. </font></li> <li><font size="3">Step 4: Upon successful programming, the technician will verify that all functions—such as remote locking, unlocking, and ignition start—operate correctly. </font></li> </ul> <p><font size="3"><b>Additional Considerations:</b> </font></p> <p><font size="3">If the smart fob includes a physical key, it must be cut to match the vehicle’s ignition or door locks. Any existing keys not present during programming may be removed from the system for security. A minimum of one working key may be required to initiate the programming process, depending on the system status.</font></p>
