ON-BOARD PROGRAM for setting virgin keys/ or adding another....

[Mazda Mender]

1998-2003 Mazda 626 - 2000-2004 Mazda Mx5/Roadster/Miata, MPV

ORIGINATE A NEW KEY/ADD A DUPLICATE KEY:....


1. Insert a new key into ignition and turn it to “ON”. Turn back to the “LOCK” position. Repeat until this has been done five times.
***Do not leave the key in any position for more than one second during this step***.

2. Turn the key back to the “ON” position. The dashboard security light should be flashing rapidly. Within 20 seconds turn the key to the “LOCK” position and leave it there for 5 minutes. After this 5 minute delay, the flashing security light will slow down.

3. Within twenty seconds, enter the password. (The password is obtained by supplying the vehicle’s Immobilizer Unit serial number to Mazda. This is converted to an 8 digit number unique to each Immobilizer Unit).

4. While watching the dashboard security light, turn the ignition to “ON”. Count the number of flashes and turn it back to “LOCK” when the number of flashes equals the first digit of the password.

5. Within thirty seconds, turn the ignition back to “ON”. Count the number of flashes and turn it back to “LOCK” when the number of flashes equals the second digit of the password.

6. Repeat until all eight code word digits have been entered. Carefully turn the lock from one position to the other only when the security light is off. If a mistake is made or you lose count of flashes, wait 45 seconds and start again at Step 1.

7. When the security light stops flashing and stays on,this indicates the password has been entered successfully.

8. Start the vehicle and the security light should go off within two seconds.

9. Removing the previous key, inserting the new key and starting the car within 20 seconds can add additional new keys.

10. Thirty seconds after the last key has been programmed, the vehicle’s programming cycle will end and return to the normal operating mode.

***submitted by Fraz Fonarelli***

[Mazda Mender]

2001-05 Mazda MX5 MK2.5 NB 1.6/1.8 – Code a NEW Key when there are no other Keys:


1. Insert a new key into ignition - leave for one second and then remove 90% of the key from the lock, just leaving the tip of the key in the lock Repeat until this has been done five times.
(Do not leave the key in any position for more than one second during this step. )


2. The dashboard security light should be flashing rapidly. Within 20 seconds turn the key to the “LOCK” position and leave it there for 5 minutes.
After this 5 minute delay, the flashing security light will slow down.

3. Within twenty seconds, enter the password.
(The password is obtained by supplying the vehicle’s Immobilizer Unit serial number to Mazda. This is converted to an 8 digit number unique to each Immobilizer Unit).

4. While watching the dashboard security light, turn the ignition to “ON”. Count the number of flashes and turn it back to “LOCK” when the number of flashes equals the first digit of the password.

5. Within thirty seconds, turn the ignition back to “ON”. Count the number of flashes and turn it back to “LOCK” when the number of flashes equals the second digit of the password.

6. Repeat until all eight Codeword digits have been entered.
Carefully turn the lock from one position to the other only when the security light is OFF.
If a mistake is made or you lose count of flashes, wait 45 seconds and start again at Step 1.


7. When the security light stops flashing and stays on, this indicates the password has been entered successfully.

8. Start the vehicle and the security light should go off within two seconds. (In my case, the car wouldn’t start after entering the Codeword but I had turned the key to try)

9. Removing the First key, inserting the new key and starting the car within 20 seconds can add additional new keys. (Same as above, tried to start the car but it wouldn’t)

10. Thirty seconds after the last key has been programmed, the vehicle’s programming cycle will end and return to the normal operating mode. Then, my car started ok with both keys.