If you notice an error message on Nissan Altima 2019’s display, you should take note since it can prevent your car from recognizing your key fob, thus affecting its performance. Besides preventing the engine from starting, it can also cause the car not to start.
Nissan Altima 2019’s display message key system error could be caused by a dead battery, a faulty IPD module, a faulty smart fob, or a faulty power management module.
It’s possible that you need to visit Nissan’s service center to have a deeper diagnosis performed in order to deactivate this warning message. The battery should be replaced or the software reprogrammed to deactivate the message.
What Does Key System Error Mean On Nissan Altima 2019?
It is possible that your Nissan Altima’s key system error light will turn on after the ignition switch is pushed to the ON position for a short time, then turn off. If your vehicle can’t communicate with your immobilizer system and is unable to recognize the key fob, then this error message appears.
During ignition, the warning light will illuminate yellow, indicating that there is a problem with the intelligent key system. It is not possible to start the engine if this warning light appears when the engine has stopped. This error message can, however, be ignored and the vehicle can be locked and unlocked.
The car can be driven while the light is on, however, if the engine is running. Having an expert mechanic check the system or visiting Nissan’s service center will make driving safer.
How To Fix Key System Error Nissan Altima 2019
In addition to the following simple solutions, here are some of the most common causes of key system error on Nissan Altimas:
Intelligent Power Distribution Module
If you diagnose a damaged Intelligent Power Distribution Module as the cause of your car’s key system error message, you’ll need to replace it.
It is crucial that you follow the instructions in the user manual closely so that the repair can be completed successfully. The company recommends that you employ a qualified technician instead of attempting to handle this task yourself.
Replacement of the IPDM E/R (Intelligent Power Distribution Module) involves the following steps:
Electronics & Power Control > IPDM E/R > Removal and installation
Damaged Key Fob Battery
The first thing you should check if your Nissan Altima 2019 shows a key system error message is the battery in its key fob. Over time, the key fob’s battery will wear out, especially if it is used frequently.
In any case, replacing the Nissan key fob’s battery is quite simple and readily available. Also, every 3 to 5 years you may have to replace the battery on the key fob. The following steps will guide you through the process of replacing your Nissan key fob’s battery:
- Using the small switch on the rear of the key fob, turn it over and push it down. As a result, you’ll be able to remove the key fob from the keychain.
- Make sure that both front and rear cases are kept in a cloth after separating them using a screwdriver.
- The battery can be accessed by opening the slots and pushing it with a screwdriver.
- Once the battery has been installed, close the cases and insert a new one. Make sure the key is back in place and that the button is working by pushing it again.
Faulty Intelligent Nissan Key Fob
Attempt to reprogram the key fob to restore functionality if the Nissan Altima 2019 key system error message does not go away after replacing the key fob battery. Occasionally, software issues may lead to key fob malfunctions on Nissan vehicles.
Thus, it should be possible to reset the system. Even though Nissan dealerships charge around $100 to $200 to reset Nissan’s key fob, it is best to bring it to them. The Nissan Altima key system error can be resolved at home by firing up the garage door opener.
Faults in the BCM
The BCM system needs to be checked if you have replaced the key fob battery or the main battery on your Nissan Altima, or if the computer has been reset. The key system error light on the dashboard of Nissan Altima can sometimes be caused by an issue with the BCM wiring. This may deactivate the error light if the BCM wiring needs to be replaced.
The Nissan dealership or nearest auto repair shop can help you if the key system error message still appears on your car. Depending on the issue, your Nissan Altima may need a deep diagnostic, such as a faulty battery connection, a damaged ignition switch, or a defective starter motor.
How To Reset Key System Error Nissan Altima 2019
- The first thing you should do is lock the door of your car.
- The key should be inserted and taken out several times from the ignition. You will be able to access the program mode by doing this.
- Rotate the key once it is in the ignition. Activate the intelligent key by pressing it.
- Take a look at the key fob now. You have properly reprogrammed a Nissan Altima key if you start seeing flashing lights or hear beeping.
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FAQs
Why won’t my Nissan Altima recognize the key?
You will not be able to start your Nissan Altima if the key battery in your vehicle is low or almost dead. It may be necessary to change the vehicle’s IPDM/intelligent key fob if the key still isn’t recognized after changing the battery. Contact the manufacturer’s service point for help if you’re confused.
How to start a Nissan Altima without the smart key?
The key fob port on your Nissan Altima can be used to start the vehicle if your smart key doesn’t work. To operate the fob, you need to tap the clutch or brake pedal while inserting the fob into the port. It is also possible to start the vehicle by stepping on the clutch or brake.
Why is my Nissan key fob not working after the battery change?
You can restore your Nissan key fob’s functionality by resetting the key fob after replacing the battery. Additionally, you should check for broken contacts or misaligned buttons, as these can interfere with your key fob.
Conclusion
Key system error messages usually appear due to a dead or malfunctioning battery in the Nissan Altima 2019. This error message should disappear when the battery is replaced. Now that you’ve got the procedure, you can even easily replace the key fob battery at home.
It’s still recommended that you bring your Nissan Altima 2019 to the service station for a deeper analysis if the warning light is still on.
