Yes, but you have to code it to do that. In my opinion, the easiest way is to get the BimmerCode app and one of their WiFi dongles (I already had a WiFi Thor module for N54 Flasher) or get the Veepeak OBD Bluetooth dongle. Both have worked great for me. The app made it a breeze to code the Range Extender menu to be visible. Then once the battery is below 75% you can tell it to turn on the REx. I set it to shortcut button number 8 and it’s easy to turn on when on the highway or wherever.