<h1>2003 Acura MDX Remote Keyless Entry Fob</h1> <p><b>Important</b>: The 2003 Acura MDX supports onboard programming. Follow the steps below to program up to three remote fobs from inside the vehicle.</p> <p><b>Step-by-Step Programming Instructions:</b></p> <ul> <li>Step 1: Unlock all doors and sit in the driver’s seat.</li> <li>Step 2: Insert the key into the ignition and turn it to the ON (II) position. Do not start the engine.</li> <li>Step 3: Press and release the LOCK button on the remote you wish to program.</li> <li>Step 4: Turn the ignition to the OFF (I) position. Keep the key in the ignition.</li> <li>Step 5: Turn the ignition back to the ON (II) position.</li> <li>Step 6: Press the UNLOCK button on the same remote.</li> <li>Step 7: Turn the ignition back to the OFF (I) position.</li> <li>Step 8: Turn the ignition to the ON (II) position again.</li> <li>Step 9: Press the LOCK button once more on the remote.</li> <li>Step 10: Turn the ignition back to the OFF (I) position.</li> <li>Step 11: Turn the ignition to the ON (II) position one final time.</li> <li>Step 12: Press and release the LOCK button. The door locks should cycle to confirm the system has entered programming mode.</li> <li>Step 13: Press the LOCK button on each additional remote you want to program. The locks will cycle after each one is successfully registered.</li> <li>Step 14: Turn the ignition to the OFF (I) position and remove the key to complete the process.</li> <li>Step 15: Test all remotes to ensure they operate the lock and unlock functions correctly.</li> </ul>
