Replacing the battery in a Nissan Note key: instructions with photos and nuances

Keychain Nissan Note with keyless entry (Intelligent Key) is a convenient solution, but sooner or later its battery runs out. The first signs: a decrease in the range of action, the need to bring the key closer to the door or even touch it to the engine start button. If you ignore the problem, one day the car simply will not respond to the signal from the key fob. Fortunately, You can replace the battery yourself in 5–10 minutes, without resorting to the help of the service.

This article contains step-by-step instructions with photos, choosing a suitable battery, common mistakes and answers to frequently asked questions. We took into account the features of the keys Nissan Note different generations (including restyled versions 2013–2020) and added tips on how to extend the life of a new battery. If your key looks different, check its model at the end of the article in the FAQ section.

Which battery to choose for a Nissan Note key

In 90% of cases in keychains Nissan Note used CR2032 lithium battery with a voltage of 3 V. However, in some versions of keys (for example, for models with a system NissanConnect) can stand CR2026 — it is 0.7 mm thinner, but with the same diameter. To avoid mistakes, remove the old battery and check the markings on its case.

We recommend purchasing batteries from trusted brands:

• 🔋 Duracell - a reliable option with a long service life (up to 5 years with moderate use).
• 🔋 Energizer — good balance of price and quality, resistant to temperature changes.
• 🔋 Panasonic - original batteries, which are often installed at the factory.
• 🔋 Maxell - a budget but high-quality analogue (suitable for temporary replacement).

⚠️ Attention: Do not buy cheap batteries from nameless manufacturers! They can leak and damage the contacts inside the key. Also avoid items with an expired expiration date (listed on the packaging).

Battery replacement tools

To work you will need:

• 🔧 A flat screwdriver with a thin tip (or a plastic pick for disassembling the case).
• 🔧 New battery CR2032 or CR2026 (depending on the key model).
• 🔧 A clean cloth or napkin (so as not to lose small parts).
• 🔧 Magnifying glass or flashlight (optional, for inspecting contacts).

If you have a key with retractable blade (as in the photo below), additionally prepare tweezers - they are convenient for removing the old battery without touching the contacts with your fingers.

Step-by-step instructions for replacing the battery

Key parsing Nissan Note simple, but requires precision. Follow the instructions:

1. Step 1: Remove the mechanical blade.
   

   Press the release button (usually located on the side) and slide the metal blade out of the housing. Set it aside.

2. Step 2: Separate the key body.
   

   Insert a screwdriver into the groove between the two halves of the case (on the side where there are no buttons) and carefully push them apart. If the case does not give in, try heating it slightly with a hairdryer - the plastic will become softer.

3. Step 3: Take out the old battery.
   

   Pry it off with a screwdriver or tweezers. Please note polarity: There is usually a “+” or “−” mark on the key body.

4. Step 4: Install a new battery.
   

   Place it in the nest plus up (this is critical for correct operation!). Make sure it fits snugly.

5. Step 5: Collect the key.
   

   Connect the body halves until you hear a click. Reinsert the mechanical blade.

⚠️ Attention: If the key does not work after replacing the battery, check:

• Battery installation polarity (reverse it).
• Contacts inside the key - they may have oxidized (clean with alcohol).
• The integrity of the spring battery holder (sometimes it breaks when removed inaccurately).

Common mistakes and how to avoid them

Even in such a simple procedure, mistakes can be made that will lead to the key breaking. Here are the most common:

Error	Consequences	How to avoid
Using a wide blade screwdriver	Scratches on the case, chipped plastic	Take a watch screwdriver or a plastic pick
Using excessive force during disassembly	Cracks in the case, broken latches	Warm up the case with a hairdryer or use a suction cup for phones
Touching contacts with your fingers	Oxidation, deterioration of contact	Use tweezers or gloves
Installing the battery on the wrong side	The key does not work, it is possible to reset the settings	Check the “+” mark on the body

If after replacing the battery the key no longer synchronizes with the car, the code may have been reset. In this case you will need reprogramming via the diagnostic connector or at the dealer. To avoid this, do not press the buttons on the key fob in the first 30 seconds after installing a new battery, allow the system to stabilize.

What should I do if the key does not work after replacement?

If the key doesn't respond, try:

1. Restart the car (remove/insert the key into the ignition).

2. Bring the key fob as close as possible to the engine start button (sometimes “binding” helps).

3. Check the battery with a tester - it may be defective.

If all else fails, have your immobilizer diagnosed by your dealer.

How to extend the life of your key battery

Average key battery life Nissan Note — 2–4 years, but with proper use this period can be increased:

• 🔌 Do not store the key near heat sources (battery, direct sunlight).
• 📱 Avoid keeping the key near a mobile phone or other devices with a strong electromagnetic field for a long time.
• 🔑 Do not press the key fob buttons unnecessarily - each signal consumes charge.
• 🧲 If you do not use the key for a long time (for example, on a spare set), remove the battery from it.

Important: If the vehicle is equipped with a system Nissan Intelligent Key with function contactless start, the key constantly exchanges data with the car even in sleep mode. In this case, the battery will run out faster - in about 1.5–2 years.

Video instructions for replacing the battery

For clarity, we recommend watching a video with key analysis Nissan Note:

🎥 Video: Replacing the battery in a Nissan Note key (2016)

The video shows the process using the example of a key with a trunk release button, but the steps are identical for all versions. Pay attention when removing the battery - the author uses a plastic spatula to avoid damaging the contacts.

FAQ: Answers to frequently asked questions

Can a CR2026 battery be used instead of a CR2032?

Theoretically, yes, but only if your key originally had CR2026. These batteries are thinner, and if the contacts in the key are not adjustable, CR2032 may not fit tightly into the socket, which will lead to poor contact. Check the markings on the old battery.

How to understand that the battery is completely dead?

Signs of a completely dead battery:

• The key stops opening the doors even end to end.
• The "key not detected" indicator lights up on the dashboard (key not detected).
• When you press the buttons on the key fob, you cannot hear the relay click.

In this case, replacing the battery is mandatory - further operation may lead to synchronization failure.

Do I need to reprogram the key after replacing the battery?

In 99% of cases no. Modern keys Nissan Note do not require reprogramming after replacing the battery. However, if the key stops working, try:

1. Remove the battery for 1 minute, then insert it back.
2. Place the key near the engine start button and hold for 10 seconds.
3. If it doesn't help, contact your dealer for diagnostics.

Where to buy a battery for a Nissan Note key?

Batteries CR2032 And CR2026 sold in:

• Electronics stores (Svyaznoy, M.Video).
• Pharmacies (sometimes they have lithium cells in stock).
• Automotive stores (for example, AutoSpetsCenter or AUTO3N).
• Online (Wildberries, Ozon, AliExpress - but check the seller’s reviews!).

The cost of one battery is from 50 to 200 rubles, depending on the brand.

Is it possible to replace the battery in a key with a display?

Yes, but the process is more complicated. In keys with a screen (for example, for Nissan Note e-Power) usually a battery is used CR2450. Disassembling such a key requires care - there are more parts inside, and there is a risk of damaging the display cable. If you are not sure, it is better to contact the service.