2019 – 2023 Nissan Altima: How to Unlock, Open & Start with a Dead Remote Key Fob Battery

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Welcome to Program Your Remote! In this article, we will explore the steps to unlock, open, and start a Nissan Altima from 2019 to 2023 if the key fob battery is dead. Whether your vehicle is locked or the battery in your remote dies, we have you covered. We will provide a detailed guide on how to overcome these challenges and get your Altima up and running.

Unlocking the Nissan Altima

  1. Remove the Emergency Key: To begin, locate the emergency key slot on the back of your smart key remote. Press the release button to slide out the emergency key.

  2. Unlock the Driver’s Door: Insert the emergency key into the driver’s door lock and turn it counterclockwise or to the left. This action will unlock the door, granting you access to the vehicle’s interior.

  3. Secure the Emergency Key: Once the door is open, remove the emergency key from the lock and place it back inside your smart key remote. This step ensures that you won’t misplace the emergency key.

Starting the Vehicle with a Dead Key Fob Battery

  1. Enter the Vehicle: After unlocking the Altima, enter the vehicle through the driver’s door.

  2. Press the Brake: Sit in the driver’s seat and press the brake pedal. This step is necessary to start the vehicle.

  3. Touch the Remote Key Fob to the Start/Stop Button: Take the dead key fob and press it against the start/stop button on the dashboard. Ensure that the key fob makes contact with the button.

  4. Start the Vehicle: Once the key fob is in contact with the start/stop button, press the button as you normally would to start the vehicle. The Altima should start without any issues.

Handling the Alarm

  1. Alarm Activation: When you open the door, the vehicle’s alarm may start blaring. This situation occurs if your key fob battery is dead and the vehicle is locked. Don’t worry; we have a solution.

  2. Start the Vehicle to Silence the Alarm: Follow the steps mentioned above to start the vehicle with the dead key fob battery. Once the vehicle is running, the alarm will automatically stop.

  3. Battery Dead? No Alarm: If your vehicle’s battery is also dead, you won’t encounter the alarm when opening the door. In this case, proceed directly to step number four.


Unlocking, opening, and starting a 2019 to 2023 Nissan Altima with a dead key fob battery is a simple process. By following the steps mentioned above, you can quickly regain access to your vehicle and start it without any difficulties. Remember, in case of a dead remote battery, use the emergency key to unlock the door and utilize the start/stop button in conjunction with the dead key fob to start the vehicle.

Thank you for reading this guide from Program Your Remote. If you have any questions or need further assistance, please let us know. Don’t forget to like and subscribe to our channel for more helpful automotive tips and tricks. Happy driving!