Can the audio system on my 54 reg MX5 be rescued once the antitheft acts?

Does the system show blinking "ERR" message on the display?

Mazda says that you must purchase a new system because your old system is now useless.

However, this is not always true.

Most Mazda radios have a hidden unlock feature that can override the anti-theft.

Try this:

Step one:- press one at a time- preset 6, AM, Auto M, Seek ^ (up).
Step Two:-Input this number, 1414.
Step Three:- Press and hold Auto M and Preset 6 together.
Step Four:- The Word 'GOOD' will appear on the screen indicated that the radio will work.
Step Five:- Reprogram new Antitheft code into radio as per instrution manual.

Post here if it does help or not... if it doesn't help, I can give you several other possible solutions (another sequences of pushing buttons).

A.R.S.
November 2012