Companies sometimes keep online databases of car radio codes. Entering info such as your vehicle identification number (VIN) or the radio's serial number might return the code you're looking for.

How do I find the radio security code for a 2003 Holden Astra? The first thing to do is find the owner’s manual and any paperwork that came with the car when it was brand new. Many dealerships wrote ...

The VIN number of your car is a required code that can tell you all sorts of information about your vehicle's history, and it has multiple locations.

A car VIN number is like a social security number for your vehicle. Here are the scenarios when you might need it and the places where you can find it.