<h1>2015 Audi S4 Keyless Entry Remote Fob (Smart Key)</h1> <p><font size="3"><b>Important Notice:</b> The 2015 Audi S4 is not equipped with onboard programming capabilities for smart key remote fobs. All programming must be performed by a qualified technician using official diagnostic equipment. </font></p> <p><font size="3"><b>Programming Procedure:</b> </font></p> <ul> <li><font size="3">Step 1: Confirm that the vehicle’s ignition is off and all doors are closed securely.</font></li> <li><font size="3"> Step 2: Use an Audi-approved diagnostic scanner to connect to the vehicle's onboard system via the OBD-II port. </font></li> <li><font size="3">Step 3: Navigate to the immobilizer or keyless entry control module using the diagnostic interface. </font></li> <li><font size="3">Step 4: Begin the key learning process by following the tool's prompts. Ensure that all existing and new smart keys are present, as only those introduced during this session will remain active.</font></li> <li><font size="3">Step 5: When prompted, position the new smart key near the designated sensor area (often in the center console or near the steering column, depending on trim). </font></li> <li><font size="3">Step 6: Once the system confirms successful programming, test the following functions on the new key: Door locking and unlocking Trunk release Push-to-start engine activation (if applicable) </font></li> </ul> <p><font size="3"><b>Additional Notes:</b> </font></p> <p><font size="3">A cut emergency key blade may be needed for manual access in case of battery failure. A security code or access PIN may be required during the programming process. If replacing a lost key, all unprogrammed keys will be disabled as part of the process.</font></p>
