Disconnect the negative battery cable remote terminal from the remote battery post and keep it apart for two minutes, as this safely drains the system's capacitor, more importantly for vehicles that have seatback mounted air bags. Now, remove the driver's seat cushion side shield using the proper method and from the bottom of the seat, rock the memory set switch through the gap to disconnect it. Put the new switch inside the seat cushion side shield, connect the shield and lastly, attach the negative battery cable remote terminal.