These instructions apply to the Nissan Leaf Mk1 (ZE0) 2011-2017.
For other models, please choose your vehicle here.
When the Intelligent Key on your Nissan Leaf (ZE0, 2011–2017) only works up close, or a key battery-discharge indicator shows on the display, the coin cell inside is running down. Replacing it takes a couple of minutes and one inexpensive battery.
The Battery You Need
The ZE0 Leaf Intelligent Key takes a single CR2025 3-volt lithium coin cell (or equivalent). A dashboard Intelligent Key battery-discharge indicator is your cue to change it before it dies completely.
Replacing the Cell
- Slide out the mechanical key from the fob — the release helps you split the case.
- Ease the two halves apart at the seam with a small flat screwdriver wrapped in tape.
- Lift out the old cell, noting which face points up.
- Fit the new CR2025 the same way round, keeping fingers, dust and oil off the cell and contacts.
- Align the two halves, click the case shut, and slide the mechanical key home.
- Press a button, or start the car, to confirm the key is recognised again.
If It Still Will Not Work
Check the cell is the right way up, seated firmly, and the contacts are clean. If a completely flat key stops the Leaf recognising it, you can still start the car by touching the key to the power switch — see our dead-key-fob start guide — then fit a fresh cell.
Frequently Asked Questions
Which battery does the ZE0 Leaf key use? A CR2025 lithium coin cell, or an equivalent brand.
Do I have to reprogram the key afterwards? No — swapping the cell does not erase the programming.
What is the key battery-discharge indicator? A dashboard message shown when the Intelligent Key’s coin cell is low — fit a new CR2025 promptly.
Can I still drive with a dead key? Yes — touch the key to the power switch and start with the brake pressed.
Chasing another niggle on your Nissan? Our sister site autodtcs.com covers diagnostic trouble codes when a warning light appears.
Independent guide — not affiliated with Nissan. Always follow your official service manual and safety precautions. Read our full disclaimer.