How to Fix Key System Error Nissan Sentra 2017

How to Fix Key System Error Nissan Sentra 2017

If you are a proud owner of a Nissan Sentra 2017, you might have encountered the frustrating “Key System Error” message on your dashboard at some point. This error can be alarming and may leave you feeling unsure about what steps to take next.

Understanding the Key System Error

The Key System Error in the Nissan Sentra 2017 is typically related to issues with the key fob or the vehicle’s immobilizer system. When this error occurs, it can prevent you from starting the car or using keyless entry features.

While the exact cause of the Key System Error may vary, there are some common steps you can take to troubleshoot and potentially resolve the issue on your own.

Steps to Fix the Key System Error

Here are some steps to follow if you encounter the Key System Error in your Nissan Sentra 2017:

1. Replace The Key Fob Battery

One of the simplest causes of the Key System Error can be a depleted battery in the key fob. Start by replacing the battery in the key fob with a new one, making sure to use the correct type of battery recommended by Nissan.

2. Check For Interference

Interference from other electronic devices or metal objects can sometimes disrupt the signal between the key fob and the car. Make sure you are in an open area away from such interference when attempting to use the key fob to start the car or unlock the doors.

3. Use The Mechanical Key

If the key fob is not working, you can use the mechanical key that is typically housed within the fob. This key can be used to manually unlock the driver’s door and start the car by inserting it into the ignition switch.

4. Reset The Immobilizer System

In some cases, resetting the vehicle’s immobilizer system may resolve the Key System Error. To do this, insert the mechanical key into the driver’s door and manually lock and unlock the door a few times. Then, attempt to start the car using the key fob or the mechanical key in the ignition switch.

5. Seek Professional Assistance

If the above steps do not resolve the Key System Error, it may be necessary to seek professional assistance from a certified Nissan technician. They have the tools and expertise to diagnose and repair more complex issues related to the key system and immobilizer.

Preventing Future Key System Errors

Once you have resolved the Key System Error in your Nissan Sentra 2017, there are some additional steps you can take to prevent future occurrences:

  • Regularly replace the key fob battery to ensure it remains in good working condition.
  • Keep the key fob away from other electronic devices and metal objects that may interfere with its signal.
  • Store the key fob in a safe place to avoid damage or loss.
  • Consider having a spare key fob programmed for your vehicle to use in case of emergencies.

Frequently Asked Questions For How To Fix Key System Error Nissan Sentra 2017

What Are The Common Causes Of The Key System Error In Nissan Sentra 2017?

The Key System Error in Nissan Sentra 2017 can be caused by a weak key fob battery, faulty key fob, or issues with the vehicle’s immobilizer system.

How Can I Troubleshoot The Key System Error In My Nissan Sentra 2017?

Start by replacing the key fob battery, then try reprogramming the key fob. If the issue persists, have the vehicle’s immobilizer system checked by a professional.

Is It Possible To Fix The Key System Error Without Visiting A Dealership?

Yes, try the troubleshooting steps at home first. If unsuccessful, seek the assistance of an automotive locksmith or a certified Nissan technician for further diagnosis and repair.

What Are The Potential Costs Associated With Fixing The Key System Error?

The cost may vary depending on the underlying issue, but it can range from the price of a new key fob battery to the cost of replacing the vehicle’s immobilizer system.

How Can I Prevent Future Occurrences Of The Key System Error In My Nissan Sentra 2017?

Regularly check the key fob battery, handle the key fob with care, and promptly address any warning signs of malfunction to prevent the Key System Error from reoccurring.


Dealing with the Key System Error in your Nissan Sentra 2017 can be frustrating, but with the right troubleshooting steps and preventative measures, you can effectively manage and resolve this issue. By following the steps outlined above and staying proactive about maintaining your key fob, you can ensure that your driving experience remains smooth and hassle-free.

Remember, if you are unable to resolve the Key System Error on your own, don’t hesitate to reach out to a professional for assistance. Your Nissan Sentra 2017 deserves the best care, and addressing the Key System Error promptly will help you enjoy peace of mind on the road.

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