Mx5 Mk3 - Reprogramming used key

Registering Keyless Entry Transmitters NB & NC

  1. Shut all doors and remove key from the ignition switch
  2. Open drivers side door
  3. Insert key into ignition, switch ignition on and off 3 times.
  4. Close then open drivers door 3 times (all doors should lock then unlock)
  5. Press unlock button twice on the transmitter (doors lock then unlock to confirm)
  6. Press unlock button twice on all other transmitters to be registered to the car (doors should lock and unlock to conform each transmitter registered)
  7. Switch ignition on to cancel set-up mode.

I could be right in thinking you have to remove the key after Action3
Action 4 is most easily achieved by pushing the interior light switch in the door aperture to simulate door opening and closing.

JS