How do I replace the batteries in the Innova 5610 OBD Scanner?

Replace batteries when the battery symbol is visible on the display and/or when all 3 LEDs are lit. Locate the battery cover on the back of the Scan Tool, slide it off using your fingers, and replace the three AA-size batteries (alkaline-type batteries are recommended for longer life). Reinstall the battery cover. After installation, you must select your desired display language and unit of measurement on first startup.