Mitsubishi Montero STEREO CODE?

If you are talking about the theft code that is required when the battery is dis-connected, sometimes, or when the stereo is dis-connected for some reason. You can only get that from a dealership and they may not be able to provide you with it as it is something you should have at purchase and keep up with. If they can give it to you theywill charge you a good bit of money. They may reset it and give you a new one.