Canceling Anti-theft Operation

WARNING: This page is about a different car, the 2005 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.

Properly input the selected code number to deactivate the anti-theft system and resume normal audio operation.

Turn the ignition switch to ACC position. ("CODE" will flash on the display.)
First press the AUTO-M button, then simultaneously press channel button 6 for approximately 2 seconds until dashes appears on the display.
NOTE:
- Perform Step 3 within 10 seconds after Step 2.
Fig 1: Pressing AUTO-M Button and Channel Button 6 Until Dashes Appear On Display
Courtesy of MAZDA MOTORS CORP.
Use channel buttons 1-4 to input the selected code number. Press button 1 for the first digit, 2 for the second, 3 for the third, and 4 for the last digit. Input the number within 10 seconds. If the display is deleted, repeat the procedure from Step 1.

Fig 2: Inputting Code Number
Courtesy of MAZDA MOTORS CORP.
CAUTION:
- Three consecutive errors, including turning the ignition switch to LOCK position and disconnecting the audio unit, will activate the anti-theft system and render the audio unit completely inoperative.
With the code number displayed, press the AUTO-M button, then simultaneously press channel button 6 for approximately 2 seconds. "CODE" will flash for approximately 5 seconds.
If "Err" (error) appears on the display, repeat the procedure from Step 1.

Fig 3: Pressing AUTO-M Button and Channel Button 6 Until "CODE" Appears On Display
Courtesy of MAZDA MOTORS CORP.