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I have not tried that yet. If the car had a key opening on the passenger I would've tried this many times...since I've been quite forgetful regarding the keyless entry not working and have just gone to the passenger side to load things into the vehicle. only to be rebuffed and had to walk to the drivers side and use my key to unlock. And just to reiterate, the door lock switch works once I have started the vehicle even if it is cold.