<h1>Remote Key Fob Programming Instructions for 2009 Acura MDX</h1> <p><font size="3"><b>Important:</b> This procedure programs the remote control functions only—such as lock, unlock, and panic. It does not program the ignition or immobilizer chip. All steps must be performed inside the vehicle with the doors unlocked. </font></p> <p><font size="3"><b>Step-by-Step Programming Instructions:</b> </font></p> <ul> <li><font size="3">Step 1: Unlock all doors and remain seated in the driver’s seat. </font></li> <li><font size="3">Step 2: Insert the key into the ignition and turn it to the ON (II) position (dashboard lights on, engine off). </font></li> <li><font size="3">Step 3: Press and release the LOCK button on the remote. </font></li> <li><font size="3">Step 4: Turn the ignition to the OFF (I) position, leaving the key inserted. </font></li> <li><font size="3">Step 5: Turn the ignition back to the ON (II) position. </font></li> <li><font size="3">Step 6: Press the UNLOCK button on the same remote. </font></li> <li><font size="3">Step 7: Turn the ignition to the OFF (I) position again. </font></li> <li><font size="3">Step 8: Turn the ignition back to the ON (II) position. </font></li> <li><font size="3">Step 9: Press the LOCK button on the same remote once again. </font></li> <li><font size="3">Step 10: Turn the ignition to the OFF (I) position. </font></li> <li><font size="3">Step 11: Turn the ignition to the ON (II) position one final time. </font></li> <li><font size="3">Step 12: Press and release the LOCK button. The door locks will cycle, confirming the system is now in programming mode. </font></li> <li><font size="3">Step 13: Press the LOCK button on each remote you wish to program, including the one used to start the process. The locks will cycle after each successful registration. </font></li> <li><font size="3">Step 14: Turn the ignition to the OFF (I) position and remove the key to complete the process. </font></li> <li><font size="3">Step 15: Test all remotes to ensure proper operation.</font></li> </ul>