<h1>2021 Audi TTS Remote Key Fob (Smart Key)</h1> <p><font size="3"><b>Important Information:</b> The 2021 Audi TTS does not support manual or onboard programming for smart key remote fobs. A secure connection to the vehicle’s electronic systems using authorized diagnostic equipment is required. </font></p> <p><font size="3"><b>Step-by-Step Programming Instructions:</b> </font></p> <ul> <li><font size="3">Step 1: Confirm Key Compatibility Ensure the replacement smart key is specifically compatible with the 2021 Audi TTS. The key should not have been programmed to any other vehicle previously. </font></li> <li><font size="3">Step 2: Prepare the Vehicle for Programming Place the vehicle in ""Park"" with the ignition off. Open the driver’s door; all other doors should remain closed. Make sure any existing keys are available during the session, as all remotes may need to be reprogrammed together. </font></li> <li><font size="3">Step 3: Connect Diagnostic Tool Access the vehicle’s OBD-II port, located beneath the steering column. Connect a diagnostic interface that supports Audi vehicle programming and immobilizer system access. </font></li> <li><font size="3">Step 4: Begin Programming Procedure Navigate through the diagnostic software to the key registration or immobilizer section. Input required authentication (e.g., security codes or PINs) to authorize the session. Select the “Add Key” or “Replace Key” option, depending on your goal. </font></li> <li><font size="3">Step 5: Register the Smart Key Place the new smart key in the key detection zone (commonly near the center console or start button). Begin the programming process using the diagnostic tool. Watch for confirmation, such as a lock cycle or a successful pairing message on the tool. </font></li> <li><font size="3">Step 6: Program Additional Remotes Repeat the process for any other remotes. All remotes should be programmed at once to ensure full functionality. </font></li> <li><font size="3">Step 7: Verify Operation Test each programmed smart key for the following functions: Lock and unlock doors Trunk release Push-button start Passive entry (if equipped) </font></li> <li><font size="3">Step 8: Exit Programming Mode Finalize the process through the diagnostic interface. Disconnect the equipment and verify the system recognizes all remotes. </font></li> </ul> <p><font size="3"><b>Helpful Tips:</b> </font></p> <p><font size="3">Use a new battery in the remote to avoid connection issues. Complete each step promptly, as some systems time out. Ensure you're in an area free from wireless interference during programming.</font></p>
