I recently picked up a 2004 d22 zd30 which came with remote central locking. I dont know if this is standard since I cant find anything online about them with factory remote central locking so for now Im assuming it was aftermarket. I lost the key fob so right now Im just using the key to get in and out but ideally I want to replace the key fob. Anyone know if this is a factory thing and i can just program a new key using ecu learn mode? or if it isnt factory, would anyone know where I should start looking for the control unit? I get that if it is aftermarket the unit could be anywhere but any common placements to start looking would be really helpful. Thanks in advance.