These instructions apply to the Honda CR-V Mk5 (RW/RT) 2018-2023. For other models, please choose your vehicle here.
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Disconnecting the 12 V battery on a Honda CR-V Mk5 (RW/RT, 2018–2023) is a straightforward engine-bay job. This guide covers safe disconnection and the items that relearn afterwards. (On the e:HEV hybrid you still only ever touch the 12 V battery — never the orange high-voltage cables.)
Where the Battery Is
The 12 V battery is in the engine compartment, under a cover — on the petrol and the e:HEV hybrid alike. The hybrid’s high-voltage battery is workshop-only.
Disconnecting
- Open the driver’s door, switch the ignition off and remove the key (or keep a keyless fob out of range).
- Wait 3 minutes after switching off before disconnecting.
- Disconnect the negative (−, black) terminal first and lift the lead clear.
- If removing the battery, disconnect the positive (+, red) next, then the hold-down.
Airbag/pretensioner safety: if you’ll be near airbags or seat-belt pretensioners, allow the system to discharge for the 3 minutes.
Reconnecting & Relearning
- Reconnect positive (+) first, then negative (−) last; tighten and refit the cover.
- Reset the clock and re-enter radio presets.
- The engine may idle slightly rough at first — the idle relearns over the first few minutes of driving.
- Recalibrate the tyre-pressure (deflation) monitor — see our CR-V Mk5 TPMS guide.
The CR-V doesn’t need the new battery coded.
Frequently Asked Questions
Which terminal first on the CR-V?
Always the negative (−) first, and reconnect it last.
Why wait 3 minutes?
Honda wants the control units to power down so nothing is corrupted when the battery comes off.
Is it safe on the e:HEV hybrid?
Yes — the 12 V is isolated from the high-voltage system. Never touch the orange cables.
Does it need the battery registered?
No — relearn idle by driving and recalibrate the deflation monitor; no coding needed.
For any warning light that stays on, look up the code on autodtcs.com. To clear the service reminder, see our CR-V Mk5 service reset guide.
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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