<h1>2011 Audi S4 Keyless Entry Remote Fob (Smart Key)</h1> <p><font size="3"><b>Important Notice:</b> The 2011 Audi S4 does not support onboard programming for smart key remote fobs. Programming must be performed by a qualified technician using specialized Audi-compatible diagnostic tools. </font></p> <p><font size="3"><b>Programming Procedure:</b> </font></p> <ul> <li><font size="3">Step 1: Ensure the vehicle is fully turned off and all doors are securely shut. </font></li> <li><font size="3">Step 2: A certified technician will connect a professional diagnostic interface to the vehicle’s onboard diagnostic port (OBD-II). </font></li> <li><font size="3">Step 3: The new remote fob will be registered to the vehicle's immobilizer and keyless access system using secure programming protocols. </font></li> <li><font size="3">Step 4: After the remote is programmed, the technician will confirm that all functions—including lock/unlock, trunk release, and push-button start—are fully operational. </font></li> </ul> <p><font size="3"><b>Additional Considerations:</b> </font></p> <p><font size="3">If the smart key includes a physical emergency blade, it must be cut to match the vehicle’s ignition or door locks. Some systems may require at least one functional key to begin the programming session. Keys not present during programming may be removed from the system for security reasons.</font></p>
