How to Start Nissan Sentra Without Smart Key

Owners of the Nissan Sentra can lock and unlock their cars with the touch of a button thanks to the vehicle’s remote keyless entry technology.

Your Nissan Sentra comes with a smart key that serves a number of crucial purposes. In an emergency, it can quickly lock and unlock your car doors and start your vehicle. It’s also small enough to fit in your pocket or wallet, making it simple to take with you everywhere you go. However, you risk losing it, forgetting where you put it or having a battery failure that prevents you from starting your car. There are easy ways to start your car in this situation, such as by using the mechanical key.

How to start a Nissan Sentra without a smart key is described in this article.

How to Start a Nissan Sentra Without Using a Smart Key

how to start nissan sentra without smart key

The smart key can simply start your automobile and perform some basic duties like locking and unlocking your vehicle. Due to its portability and ease of use, the majority of car owners have switched to using smart keys. It can be challenging to start the car when you lose your smart key, forget where you put it, or run out of charge.

You must enter the vehicle first before starting it by finding the secret key that is always included with the smart key and performing the actions listed below:

  • Flip the key fob over
  • Press on  the release button to reveal the hidden emergency key
  • Then remove it from the bottom of the fob.
  • Insert the key to unlock the driver’s side door.
  • Lastly, get into your Nissan Sentra.

If your Nissan Sentra has a key fob port, you can now start your car by doing the following:

  • Take the smart key and insert it into the key fob port as usual.
  • When you push the START/STOP button and step on the clutch or brake, your engines will finally start to run.

When starting a Nissan Sentra without a keyhole, try positioning your key fob as close to the start/stop button as you can. If it doesn’t work, check your Sentra’s operation manual for the precise location of the smart key installation since it may differ depending on the model.

Can You Start a Keyless Car Without the Fob?

Your key fob could malfunction occasionally, making it impossible for you to start the automobile. Nowadays, cars can be started without a key fob. If your fob is not functioning, you must first physically unlock your doors.

If the fob battery is dead, you can still use it to unlock doors by holding it close to the door handle. Since there is still some battery power left in the fob, this may finally work.

It’s simple to start the car once you’re inside. The system was created to function even with a broken remote since the automakers are aware that your keyless ignition could need to function if the fob dies. Every keyless entry vehicle includes a key slot on the steering column. It turns out that the switch you flick is actually a plastic cap that unscrews to reveal a key slot.

There is still a way to start the automobile if your keyless entry system is equipped with a start button and there is no mechanical keyhole. To start the vehicle, press the key fob. If the fob battery dies, certain manufacturers offer a backup system that enables this technique to function.

Will a Nissan Run Without a Key Fob?

Unquestionably, your Nissan can function without the key fob since, once the engine is turned on, it will do so automatically. You cannot restart the engine without the fob once it has shut off.

How Do You Start a Keyless Car With a Physical Key?

Even keyless entry vehicles typically include a key slot under the start button or a circular plastic cap on the steering column. To manually start your engine, remove the plastic top and use the actual key.


The mechanical key will enable you to open your car and let you get inside. Your key fob is not required to start your automobile because the ignition button is built to function even if the key fob breaks. Many automakers have even added a manual start option to the ignition button.

The spare key should turn the ignition if you are confident that it has done so in the past. However, if keys aren’t used for a while, they could lose their programming. A competent locksmith or Nissan shop may additionally need to reprogram the key.

The battery in your car’s remote or fob may eventually need to be replaced, just like any other battery, depending on how you use it. A car key battery should generally last three to four years. In addition, there are several indicators that will let you know when your fob battery is running low.

Final Words

The smart key is more practical, simple to use, and portable in today’s cars, but it can malfunction occasionally, leaving you unable to access your vehicle. If this happens, you can use the methods mentioned above or call roadside assistance. They might help you get back on the road.

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