Changing a car battery is a relatively easy practice but many people aren’t aware of this, unless you have a code to unlock the radio, you can find yourself unable to use your radio. Many modern cars have an anti-theft measure which disables the radio if the power is cut until a special security code is entered. It’s common to have people who aren’t aware of what their security code is or how to enter it. This can mean a major problem trying to resolve the situation if the radio is locked. The following steps will show you how to change your battery without the power being cut to your vehicle so your radio won’t lock.

Please follow the link below to read more:
https://www.spotdem.com/2019/10/13/how-to-change-your-battery-without-loosing-the-radio-code/

Getting a radio code can be difficult