Door Latch problems of the 2004 Infiniti G35

Infiniti g 35 2004. When in the car, and the doors are locked either manually or electronically the consumer could not unlock them unless they were manually or electronically unlocked. The consumer could not unlock the door by tugging on the door handle. The reason he was concerned about this was because he lived in florida, and cars go into canals frequently. He is concerned that in the event of the car going into a canal, the system will possibly short out, and he would not be able to get the door opened.