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Let me make sure I'm understanding, your wanting to be able to start the car, then leave it on and locked while you leave it for a few minutes to warm up correct? Well the car needs the key to be inside for it to start and once you take it out of the car while it's on it starts to yell and scream for you to bring the key back.
I'm not sure if this would work but if you have two sets of keys, you might be able to leave one in the car while it's running and lock it with the other one. Then when you return, you might be able to unlock it with the second key. I'm not sure that would work but that's the only way I see it being possible without a remote start. Hopefully Flipside or one of the FChamp's can help you with it more
Let me make sure I'm understanding, your wanting to be able to start the car, then leave it on and locked while you leave it for a few minutes to warm up correct? Well the car needs the key to be inside for it to start and once you take it out of the car while it's on it starts to yell and scream for you to bring the key back.
I'm not sure if this would work but if you have two sets of keys, you might be able to leave one in the car while it's running and lock it with the other one. Then when you return, you might be able to unlock it with the second key. I'm not sure that would work but that's the only way I see it being possible without a remote start. Hopefully Flipside or one of the FChamp's can help you with it more