Once installed, start the engine. The warning light may stay on for a few minutes while the system performs a self-test. In some cases, you may need an OBD-II diagnostic tool to clear the "stored fault" from the ECU memory. Important Maintenance Tips

If the light remains on, the new battery may not be soldered correctly, or the system's software may require an update. Dealers often perform an ECU software update when replacing the battery, which might be necessary to clear the error codes.

Take your new replacement battery and of the new battery. Ensure the solder joints are solid and secure. If you are using a pre-configured battery pack, the process is simpler, as the wires may already be attached.

💡 Cheap third-party batteries often lack the correct voltage or heat resistance required for automotive safety systems.