The car also did not have the keyless remote. Where can I get a key less remote?
I’m not sure I understand what you mean by “Master Key.” All cars made after 85 or so have one key that opens all doors and the trunk. Your used car could have been involved in an accident where the door was replaced. This would cause that key to be different from the others. Or, the vehicle could have been stolen at some point and the ignition could have been compromised so the steering column would be replaced – again, you would have a different key. All of these can be fixed pretty easily for $50-75 to a lock & key company. All they will do is recode the lock that does not match the others. For example, if the ingition key does not fit the doors- the lock & key guy will simply recode the ignition to fit the door key you have. The whole thing should only take about 30 minutes. Like everyone else said, your Toyota dealer will need to help you with the keyless entry.