These instructions apply to the Honda Civic Mk11 (FE/FL) 2022-Present. For other models, please choose your vehicle here.
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The Honda Civic Mk11 (FE/FL, 2022–present) is sold in Europe as the e:HEV hybrid, so it has two separate electrical systems. This guide covers the 12 V battery — the part you can safely work on. The high-voltage hybrid battery is never an owner job.
Two Batteries — Know the Difference
- The 12 V battery runs the lights, locks and computers and wakes the car up. It’s in the engine bay — this is the one you disconnect.
- The high-voltage hybrid battery (under the rear seats) drives the car. Never touch the orange cables or HV components — that’s strictly dealer/technician territory.
Disconnecting the 12 V Battery
- Make sure the car is fully off (not READY), all electrical consumers off, and the smart key is away.
- Disconnect the negative (−) terminal first and tuck the lead clear.
- If removing the battery, disconnect the positive (+) next, then the clamp.
Stay away from the orange high-voltage cabling throughout.
Reconnecting
- Reconnect positive (+) first, then negative (−) last.
- Reset the clock; the display and radio reload on their own.
- Press the power button to READY and check no new warnings remain.
The first few stops may feel slightly different while the hybrid system relearns — that’s normal.
Frequently Asked Questions
Where is the 12V battery on a Honda Civic e:HEV?
In the engine bay. Disconnect the negative terminal first.
Is it safe to disconnect the battery on a hybrid?
Yes — the 12 V battery is just like any car’s. Only the orange high-voltage system is off-limits.
Does the battery need coding?
No registration is required for a like-for-like 12 V battery.
Can I jump-start a Civic e:HEV?
You can receive a jump to the 12 V battery to wake the car, then it starts the hybrid system itself — never jump from the high-voltage side.
For any warning light that stays on, look up the code on autodtcs.com. To clear the maintenance reminder, see our Civic Mk11 service reset.
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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