How to Start a Nissan with a Dead Key Fob

Dead Nissan Key Fob? You Can Still Start Your Car

Your Nissan will still start with a dead key fob. Nissan builds a backup into every Intelligent Key system, so a drained battery won’t leave you stranded in a parking lot.

It usually happens at the worst time: a frigid Minnesota morning, a full grocery cart, or a late night after work. Cold weather drains small coin batteries faster, so winter is when most drivers find out their fob is dying.

This guide from the Walser Nissan Burnsville service team walks you through getting in, starting up, and replacing the battery so it doesn’t happen again.

Signs Your Nissan Key Fob Battery Is Dying

Most fobs give a warning before they quit completely. Watch for these:

• You have to stand closer to the car for the lock and unlock buttons to work.
• You press a button two or three times before the car responds.
• The request switch on the door handle stops unlocking the doors.
• A “Key Battery Low” or “Key ID Incorrect” message appears on your dash display.
• The engine sometimes won’t start even though the fob is inside the car.

If you notice any of these, replace the battery soon. It takes about five minutes and costs only a few dollars.

Step 1: Unlock the Door with the Hidden Mechanical Key

Every Nissan Intelligent Key has a physical key tucked inside it. Here’s how to use it:

1. Find the small release button or slide latch on the back or side of your fob.
2. Hold it down and pull the metal key straight out.
3. Look for the keyhole on the driver’s door handle. On many newer Nissans, it’s hidden under a small plastic cap at the end of the handle.
4. If there’s a cap, look for a small slot underneath it. Insert the tip of the mechanical key there and gently pry the cap off.
5. Insert the key into the lock and turn it to unlock the door.

Step 2: Start Your Push-Button Nissan with a Dead Fob

Your fob has a small chip inside that works without battery power. The car can read it when the fob is held very close to the start button.

1. Get in and close the door.
2. Press and hold the brake pedal.
3. Touch the Nissan logo side of the fob directly against the push-button ignition.
4. Wait for a chime, or for the button’s indicator light to change.
5. Within about 10 seconds, press the start button with your finger (or with the fob itself) while still holding the brake.

Your engine should start normally. This works on most push-button models, including the Rogue, Altima, Sentra, Kicks, Pathfinder, Murano and Frontier.

Older Nissans and What to Do If It Still Won’t Start

Some older Nissan models use a different backup method. Instead of touching the start button, you insert the fob into a dedicated key slot, usually on the dashboard near the steering wheel. Your owner’s manual will show where it is.

If your Nissan still won’t start after following the steps above, try these checks:

• Try your spare fob. If the spare works, the problem is the original fob, not the car.
• Move other keys and phones away. Other fobs or electronics near the start button can interfere with the signal.
• Check the car battery. Dim dash lights, a clicking sound or no power at all usually point to a weak 12-volt battery rather than the fob.
• Check the shifter. Make sure the car is fully in Park (or Neutral on a manual).

Still stuck? Call our service team. We can diagnose the problem and get you back on the road.

Frequently Asked Questions

Can you start a Nissan if the key fob battery is dead? Yes. Hold the brake, touch the fob to the push-button ignition, wait for the chime, then press the start button.

Where is the hidden key in a Nissan key fob? Press the release button on the fob and pull out the metal key. It unlocks the driver’s door, which may have a keyhole hidden under a plastic cap.

What battery does a Nissan key fob take? Most Nissan Intelligent Keys take a CR2032 coin battery. Check your old battery or owner’s manual to confirm.

How long does a Nissan key fob battery last? Typically two to three years, depending on use. Cold Minnesota winters can shorten that.

Do I need to reprogram my Nissan key fob after changing the battery? No. Your fob keeps its programming when you swap the battery.

Can Walser Nissan Burnsville replace my key fob battery? Yes. Our service and parts teams can replace your battery, or program a new or spare Nissan key fob.

Get Nissan Key Fob Help at Walser Nissan Burnsville

Don’t wait for your fob to die on a cold morning. The factory-trained technicians at Walser Nissan Burnsville can replace your key fob battery, program a new or spare Intelligent Key, and check your car’s 12-volt battery while you enjoy a coffee in our waiting area.

We proudly serve Nissan drivers in Burnsville, Apple Valley, Lakeville, Savage, Eagan and the greater Minneapolis area.

Schedule your service appointment online or stop by our parts department to pick up a genuine Nissan key fob battery today.