Not all car immobilizers are created equal. When all keys are lost, some can be easily reset without much effort. Others like this 2018 Toyota Sienta would have to replace the control unit before any new key can be programmed. Newest system might requires security pass-codes from the respective manufacturers which is not accessible by the aftermarket. You would be at the mercy of the sole distributor.
If unfortunately you are in this state, do give us a ring, we will do our best to put you back on the road in the shortest possible time and at the lowest cost.
