Why Is My Key Light On In My Nissan Altima?

A security indicator light is that key with the silhouette of a car in your Nissan’s instrument panel. The goal of this light is to give you peace of mind that the vehicle’s security systems are functioning. Anytime the ignition is turned to the OFF, LOCK, or AUTO ACC positions, it should blink.


This is my first Nissan 2008, and when I locked the car, a key symbol appeared on the dash. Could somebody please explain what that means? That symbol is not illuminated when the automobile is running.

Firstly, congratulations on your new car. The only thing I don’t like about my 2008 Nissan Altima is the obnoxious factory NAV.

Anyhow, your dash has two important icons. One is (I believe) amber in hue and says “KEY” with a small key icon. The intelligent key fob has a warning light like this. If there is an issue, it will remain on until you start your car, at which point it will turn off after a short period of time. It makes sense, I guess, that it’s not a big concern if you can still start your car.

It probably only implies your fob’s battery needs to be replaced because it is low. For the same reason, I recently replaced mine. It’s really simple to pop it open and change the battery. Take the old battery with you to the store and compare the numbers since it is a conventional button battery. You might need to have the dealer take a look at it if a new battery doesn’t make the light go out.

The other is a crimson automobile with a silhouette of a key in the center. The security indicator is this. Your automobile stays on if it is locked. It will blink if the ignition is off and the car is unlocked. Your automobile will be off if it isn’t running.


The security indicator light is that tiny red light. It typically flashes once every two seconds. When attempting to start the car, if that light is solidly on, there is an issue with the VEHICLE IMMOBILIZER SYSTEM-NATS. It is preferable to take the car to a Nissan dealer in that situation for an accurate diagnostic and repair.

You might not get a response because this is an old thread, and you might be restarting an old thread. Consider starting a new thread, please.

Why does my Nissan Altima state that there is no key present?

Even if the battery in your Nissan fob is still good, there may be times when the car doesn’t recognize it. The battery is usually either dead or low, but your Nissan’s remote key functions could not be working properly. Reach out to our service department and we’ll be pleased to help if changing the battery doesn’t work.

Why is the key light on in my car?

The security fault code is indicated by an amber key warning light. This light turns on if the vehicle’s control modules detect that the ignition is being turned without a key present, that the key battery is weak, or that there is a security flaw in the system.

What does Nissan’s automobile with the keylight mean?

The security indicator light is the Nissan car with the key inside in the instrument panel. The key warning light verifies that the security systems of the car are working.

The alarm and immobilizer system are probably in action when the key is not in the ignition lock or accessory position and the key light flashes.

Simply said, the red car sign on the Nissan dashboard will let you know if there is an issue or the anti-theft system is active.

When the engine ignition is turned to the OFF, AUTO ACC, or LOCK positions, this malfunction indicator light ought to flash.

If the security light on the dashboard illuminates when the engine is off, you shouldn’t be afraid because you can quickly start the car.

On the other hand, if the Nissan car key symbol on the dashboard is continuously flashing, there is a problem with the vehicle.

What do Nissan Altima warning lights mean?

  • Antilock Braking System Warning Light: ABS Symbol.
  • Brake warning light: BRAKE symbol.
  • Charge caution light: Symbol for a car battery.
  • Engine oil pressure warning light: oil can icon.
  • Low gas level warning light is the gas station’s symbol.
  • Tire pressure warning light with an exclamation mark

How can I use a dead key fob to start my Nissan Altima?

This is how: Depress the little release button after turning the Nissan key fob around. From the key fob’s base, remove the concealed emergency key. To enter your Nissan, put the emergency key in the driver’s side door and open it.

What should I do if the battery in my Nissan key is low?

You can resume using the key fob to start and enter your car once the battery in your Nissan smart key is replaced. The steps to follow to change the battery in your key fob are as follows:

  • When the battery died, you could still enter your Nissan by using the concealed key.
  • Remove the old battery and the key casing.
  • Place the negative side of the CR2025 battery upward before replacing it.
  • Reassemble the key fob and give it a try!

How is a key warning light fixed?

  • change the battery in the key fob.
  • If the issue doesn’t go away, you’ll need to tow the car to a shop that can fix the security system on it.
  • Another choice is to request a mobile key programmer to service the car and come to you.

What does the Nissan’s red car light mean?

When your Nissan’s warning light is red, you should take it in for service right away. A red warning light denotes a serious system malfunction, such as an overheated engine or a failing brake system.

My anti-theft light is on while I’m driving; why?

You won’t be able to start the car if the anti-theft system has locked up the engine. Use the next few procedures to turn off the system and start your automobile.

First, examine the anti-theft light. Most contemporary vehicles have a dash light that flashes when the anti-theft system is activated. The anti-theft system’s icon resembles both an automobile and a lock combination. The anti-theft system in your automobile is engaged when this light is on and flashing (it will either be blue or red).

Step 2: Start the engine. Just turn on the accessories with your automobile key in the ignition; the engine will not start.

Step 3: Perform an additional inspection of the anti-theft light. Turn the key to the “off” position and wait a few minutes before starting your car again if it has stopped blinking. Otherwise, your car won’t start. This enables the system to completely reset itself.

Repeat this method in step 5. See if repeating these actions will solve the problem.

What causes no key to be detected?

Key fob battery failure The most frequent cause of a keyless entry system failing to send signals is a faulty battery in the key fob. Use the extra key fob to unlock the car and turn on the ignition if one is available. Use the key that is included in the spare fob if it is not available to unlock the door.

What does the red key light that is blinking mean?

This serves as a security system indicator. It alerts you to the immobilizer’s activation and the fact that the car won’t start without the right key (yours)

What does my dashboard’s key symbol mean?

  • When an automobile displays the immobilizer/key symbol, it cannot identify its keys.
  • It might occasionally activate as a result of different immobilizer system issues.
  • Try locking and unlocking your automobile a few times. This step typically resolves the problem.
  • Try a few times of starting your ignition.
  • If none of the aforementioned methods work to turn off the light, it is advised to try using a different car key, if you have one. If the car starts with the other key, one of your car keys may not be working properly.
  • Your car will be shut off 2-3 seconds after starting if any additional immobilizer system problems are encountered. Your vehicle won’t start as a result. It is advisable to get the car to a repair shop as soon as you can in this circumstance.

What does a low battery on a car key mean?

Low on Keyless Remote Battery The transmitter’s range decreases as the fob battery gets weaker. This implies that for the key fob to operate, you must be close to the vehicle. When a smart key fob is in your pocket or handbag for automobiles with push-button starts, the car might not always detect it if the battery is low.

What does the symbol of the yellow automobile and key mean?

This one shows a picture of a key with a yellow/amber line through it and says that the key fob is missing or broken. Therefore, in the event that the key fob is still in place, have your dealer or a locksmith fix or replace it.

I have a key fob, how do I change the battery?

  • Pry the seam or notch gently. RD.com/Alaina DiGiacomo.
  • Check the Battery Orientation (Positive and Negative Ends)
  • Put the New Battery in After Popping Out the Old Battery.
  • Test the key fob’s functionality by snapping it shut.

How is a key fob reset?

Turn the key back to the “Off” position while holding down the lock button on the fob. At least three times, go through this process, finishing with the key in the “On” position.

This notifies the electronic control modules in your automobile that the signal is coming from your key in the ignition, and it then saves the information.

What does my dashboard’s yellow light mean?

The first thing to keep in mind is not to panic if a dashboard automobile warning light illuminates while you are driving. Next, consider the symbol’s lit color.

If it’s red, your car is either urgently in need of repair or there is a safety concern. To determine whether your car is safe to drive or whether it needs repair and you need a tow, safely pull over, turn off the engine, and dial a repair service or shop.

Dashboard warning lights in the color orange or yellow alert you to impending maintenance requirements like an oil change or an emissions system issue. Even though it’s not urgent, you should get a repairman to look at the issue as soon as feasible.

When a system is on or functioning properly, such as when your high beam headlights are on, it will display green or blue symbols.

Advice: If the yellow warning light on your automobile begins to flicker, treat it like a red light and contact a repair provider immediately.

What does a security warning light mean?

Ever see a warning light on your Subaru dashboard that resembles a red automobile with a lock illuminated? It appears as follows:

The security system of the car is armed, as indicated by the security indicator light, which is blinking. The Security Indicator Light will flicker continuously when the automobile is locked and turned off. It will start immediately after the key is withdrawn from the ignition and the engine is turned off. It will do so once the ignition switch changes back to “OFF” for Subaru vehicles with keyless entry and a push-button start system.

Actually, if the car is locked and off but the lights aren’t blinking, that may indicate a problem or a dead battery. Make an appointment for service with our Subaru service center in Brooklyn Park right away if it’s broken.

If the light turns on and remains lit, the immobilization system, a feature of the vehicle’s security system, is activated and the vehicle cannot be started or moved. The transmission may have been tampered with, or an unauthorized duplicate key may have been introduced. It would also be the consequence of a fault if it were illuminated and you were using the right key and operating it normally.