No. It works exactly like your key does today. When you click unlock it will unlock all of the doors, the trunk and the fuel door. When you click lock it will lock all of the doors, the trunk, the fuel door and it will arm your factory alarm. All of the current features of your factory alarm will be enabled. Our experience has been that the range of the remote far exceeds most factory remotes and it's certainly better than the range of the remote on my E430.
Bill Wood - Webmaster