<h1>2006 Audi S4 Keyless Entry Remote Fob (Smart Key)</h1> <p><font size="3"><b> Important Notice:</b> The 2006 Audi S4 does not support onboard programming for smart key remote fobs. Specialized diagnostic tools are required to complete the programming process. </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 closed. </font></li> <li><font size="3">Step 2: A qualified automotive technician must connect professional diagnostic equipment to the vehicle's onboard diagnostic port (OBD-II) to initiate the programming process.</font></li> <li><font size="3"> Step 3: The new remote must be registered to the vehicle using software capable of communicating with the Audi vehicle's control modules. </font></li> <li><font size="3">Step 4: Once programming is complete, all remotes should be tested to confirm proper functionality, including locking, unlocking, and starting the vehicle if applicable. </font></li> </ul> <p><font size="3"><b>Additional Notes:</b></font></p> <p><font size="3"> If no functional remotes are currently available, the technician will use the vehicle’s VIN and immobilizer system to complete pairing. The mechanical key must be cut separately to match the vehicle’s ignition and door locks.</font></p>