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Using additional keys with immobilizer

Author: Alex
Date: Mon Jul 28, 2003 9:33 pm

You can use a new key with your engine-immobilizer-equipped van if you have two or more valid keys. The following instruction explains how to program the immobilizer to recognize the extra key(s). You can use up to 8 keys with your Mazda MPV.

The existing valid keys are called Key 1 and Key 2. The new key is called Key 3.

Note, if no specific time interval is given, a given step should be performed within 30 seconds of a previous step.

  1. Cut new transponder equipped key(s).
  2. Using Key 1, turn the ignition switch to ON then back to LOCK five times. The key should not remain ON or LOCK for more than one second.
  3. Turn Key 1 back to ON. Observe illumination of security light in instrument panel.
  4. Turn Key 1 to LOCK and remove key 1 from steering lock. Observe security light goes out.
  5. Using Key 2, start engine. Observe security light illumination (for 1-2 seconds) and engine continues to run.
  6. Turn Key 2 to LOCK and remove from steering lock.
  7. Repeat steps 5-6 with Key 1.
  8. Repeat steps 5-6 with Key 3.
  9. If there are 4-8 keys (valid and/or new keys), repeat steps 5-6.
  10. Wait for 30 seconds to quit reprogram mode.

If you have only one valid key, then you have to go through a dealer (you will need 2 new keys and a special code to program the new keys)...
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