I have a KX-S 2010 model. I would like to change the door unlock function, i.e. hold either front door handle to unlock all doors. According to the manual, pages 34 to 35, it requires Step 1, Turn the "Engine start stop" switch OFF. KX-S doesn't have smart engine start function. So I ignored step 1 and followed step 2, try to press unlocking button on remote key while pressing locking button for 5 seconds. But nothing happened. I am wondering whether KX-S has such the function.