These instructions apply to the Honda Accord Mk9 (CR) 2013-2017.
For other models, please choose your vehicle here.
Before electrical work on a 2013–2017 Honda Accord you disconnect the 12 V battery, negative first. This is the US-market procedure.
- Ignition off, key out, eye protection on.
- Open the hood; the battery is in the engine compartment, with a condition sensor on the negative terminal.
- Remove the negative (−, black) cable first, then the positive (+, red).
- Reconnect positive first, negative last.
- Reactivate the audio system (enter the code if prompted) and reset the clock.
FAQ
Which cable first?
Negative off first, negative on last — and reconnect a replacement of the same specification.
Why the sensor on the negative terminal?
It monitors battery condition; a fault shows a message on the driver display. Don’t ground accessories to the post — use the body.
What resets afterward?
The audio system and clock; on some trims the navigation needs its code too.
If your Accord stores a fault code with the warning light, look it up on autodtcs.com.
Independent guide — not affiliated with Honda. Always follow your official service manual and safety precautions. Read our full disclaimer.