Robust vehicle securement techniques for vehicle-to-everything power generation

A securement technique for a vehicle for vehicle-to-everything (V2X) power generation includes receiving, from a transmission shifter, a requested state for the transmission from the park state where a park pawl is engaged and one or more non-park states where the park pawl is disengaged, detecting for a key fob associated with the vehicle, detecting, via a user interface device, a lock request associated with a power generation mode during which a powertrain of the vehicle is configured to operate in a generator mode and output electrical power, in response to the lock request, commanding an actuator to physically lock the shifter while the transmission is in the park state and the park pawl is engaged and when the key fob is not detected, keep the park pawl engaged without regard to a requested non-park state from the shifter.