12v battery is dead? Very carefully get a jump following the instructions in the owner's manual. You can use the physical key in the fob to unlock the driver door, if necessary. You may need to pull the door handle half way out to get the lock to engage the key. HV battery completely dead? Tow to a dealer, it needs a special charger if you can't start the hybrid system. (HV battery is used to start the engine to charge the HV battery.) If neither of those, please be more specific.
We need more info because There are different types of "dead". Or, as Miracle Max clarified in a slightly different context: Miracle Max: He probably owes you money huh? I'll ask him. Inigo Montoya: He's dead. He can't talk. Miracle Max: Whoo-hoo-hoo, look who knows so much. It just so happens that your friend here is only MOSTLY dead. There's a big difference between mostly dead and all dead. Mostly dead is slightly alive. With all dead, well, with all dead there's usually only one thing you can do. Inigo Montoya: What's that? Miracle Max: Go through his clothes and look for loose change.
