These instructions apply to the Polestar 2 (2021-2024). For other models, please choose your vehicle here.
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Disconnecting the 12 V battery on your Polestar 2 (2021–2024) — for storage or before work near the airbags — is the low-voltage battery only. The high-voltage drive battery is sealed and must never be touched. The 12 V battery is under the boot floor.
Find the 12 V Battery First
The 12 V battery is in the rear, under the luggage-compartment (boot) floor. Note your settings first — most are tied to your Polestar profile.
High voltage: never touch the orange high-voltage cabling. This procedure is only the 12 V battery.
Disconnecting Safely
- Turn the EV power switch OFF and wait a couple of minutes.
- Lift the boot floor to reach the battery.
- Disconnect the negative (−) terminal first, then the positive.
- Working near airbags? Wait a few minutes after disconnecting.
Reconnecting and Re-initialising
Reconnect positive first, then negative. The car then needs a few items settled:
- Power windows — re-initialise one-touch (hold the switch at the limits).
- Tyre pressure monitor — re-store the pressures from the touchscreen.
- Allow the car a minute to wake fully before driving.
If Something Isn’t Right Afterwards
- Warning messages often clear after a short drive.
- A persistent alert stores a code — look it up on autodtcs.com.
- Fit a like-for-like 12 V battery — an AGM unit of the correct rating.
Frequently Asked Questions
Where is the 12 V battery on a Polestar 2?
In the rear, under the boot floor — separate from the high-voltage drive battery.
Is it safe to disconnect on an EV?
Yes — the 12 V battery is low voltage. Never touch the orange high-voltage cabling.
Which terminal first?
Negative (−) off first, reconnect it last.
What needs resetting afterwards?
Power windows and the tyre-pressure store may need re-doing; most personal settings restore from your profile.
To relearn the windows, hold the switch at each limit. If a warning stays on, decode it on autodtcs.com.
Disclaimer: The information on this page is provided for general guidance only. Always follow your official service manual and safety precautions when working on your vehicle. We are not responsible for errors, omissions, or any damage resulting from the use of this information.
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