Various techniques have been developed to ensure car audio security. One of the important features is audio security codes. These codes are not for the cars security as a whole but to prevent the theft of the cars audio system. This technique involves typing in a code known only to the owner of the car. If an attempt to steal the car audio is made, it will be useless to the miscreant as the audio system will not work till the code is not typed in. It is important that the owner remember the code as sometimes he may be required to punch in the codes in case the battery of the car shuts down.

If the owner forgets the code by chance then he should immediately contact the manufacturer of the car. Most of the people prefer to imbed their car audio system with security code or anti-theft features. Sometimes the security code for the car audio security may not work this might happen in case the user is using a second hand car. This may be because the original car audio might have been replaced by some other system. In this situation is best to get the security code decoded.