Whether your battery has died or your Honda radio is equipped with a special anti-theft radio code, you’ll need to know what your Honda radio codes are and how to find them. You can always for services such as this, but to get your Honda radio codes on your own, you need: • VIN number: Your 17-digit VIN number is located on your vehicle’s registration, insurance card, Honda Financial Services Statement, or at the base of your vehicle’s windshield on the driver’s side. • Device serial number: On most new Honda models, you need to press buttons 1 and 6 on your radio, and once turned on, a 10-digit serial number will appear on the radio display. On older models, the radio may need to be removed from the vehicle, as the radio serial number is located on the back of the system.