Mazda 2005 mx-5 miata Manual page 173

To deactivate the antitheft system and
reset the audio unit, input your personal
code number.
1. Press the auto memory button
( ) and the channel preset button
6 simultaneously until bars are
displayed.
2. While the bars are displayed, input the
code number as described in the setting
procedure.
3. Press the auto memory button
( ) and the channel preset button
6 for about 2 seconds. CODE will be
flashed for 5 seconds, then disappear to
indicate that the system is operable. If
Err (error) appears, begin from Step 1.
CAUTION
Three consecutive errors will
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activate the antitheft system, and the
audio unit will be completely
inoperable and Err (error) will flash.
When this happens, the unit must be
replaced by an Authorized Mazda
Dealer at the owner's expense.
Do not allow an unauthorized person
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to attempt to input a code number.
Interior Comfort
Audio System
6-47