Step-by-step instructions on how to replace the battery on a 2016-2020 Kia Optima.
Table of Contents
What you will need
- AGM H7 12V Car battery - Cold-cranking amps: 850A
- 10mm wrench and socket
- 12mm socket, wrench, and extensions
Procedure
- Open the hood, pull the hood release under the dashboard and go to the vehicle's front.
Then unlock the hood latch and pull the hood up.
- Locate the battery on the driver's side of the engine compartment.
- Pull out the air duct above the battery by removing the two 10mm bolts connected to the bumper support bracket.
- Disconnect the positive and negative terminal of the battery, use a 10mm wrench to loosen the nuts on the terminals.
Disconnect the negative terminal first. 
- Loosen the 12mm bolt on the clamp below the battery.
Remove the clamp from the battery tray.
- Carry the battery out of the vehicle using the handles on the battery.
- Line up the new 12v battery back on the battery tray.
- Put the insulator on the new battery and reinstall the clamp on the battery tray.
Make sure to put the clamp in the right position.
- Connect the positive and negative terminals of the battery. Connect the positive terminal first. Connect the negative terminal last.
- Reinstall the air duct back on the vehicle.
- Start the engine. Then turn the steering wheel all the way to the left and then to the right twice to reset the steering angle sensor.
About Author
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Rushit Hila, ASE Certified Mechanic I have been working on vehicles for over 20 years. In 2016, I decided to start YOUCANIC so that I can empower vehicle owners all over the world. Currently, I hold an ASE certification on G1 Automotive Maintenance and Light Repair. ⏵ Read More |
