Encrypted Code Registration Using Ignition Key <Registration Using Scan Tool MB991958 (M.U.T.-III Sub Assembly)>

When the ECM <M/T>, PCM <A/T> or the ETACS-ECU is replaced, or the ignition key is lost or additional keys are requested, the ignition key must be used to register encrypted codes.

Required Special Tools: 

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)
  • MB991824: V.C.I.
  • MB991827: M.U.T.-III USB Cable
  • MB991910: M.U.T.-III Main Harness A

1. Connect scan tool MB991958 to the data link connector.
2. Turn the ignition switch to the "ON" position.
   Fig 1: Connecting Special Tool MB991910 To Data Link Connector

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3. Select "System select."
   Fig 2: Display - System Select

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4. Choose "From 2006."
   Fig 3: Display - Choose From 2006

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5. Enter the VIN code of the vehicle that is registered. Then, press "OK" button.
   Fig 4: Display - VIN Code

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6. Select "IMMOBILIZER."
   Fig 5: Display - Select Immobilizer

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7. Select "Special Function."
   Fig 6: Display - Special Function

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8. Select "Key Registration (using key)."
   Fig 7: Display - Select Key Registration

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9. Enter the password of the vehicle, and press the OK button.
   Fig 8: Display - Entering Password Of Vehicle

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10. Registration of the ignition key will be started.
    Fig 9: Display - Registration Of Ignition Key Screen

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11. When the ignition key registration is finished, the additional key registration menu is displayed. To register the additional key, insert the key and turn the ignition switch to the "ON" position. Then, press the OK button. Press the CANCEL button to terminate the ignition key registration.
    Fig 10: Display - Additional Key Registration Menu Screen

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12. A maximum of eight ignition keys can be registered. When the registration of the eighth ignition key is finished, key registration completion menu is displayed. Press the OK button and finish the ignition key registration.
    Fig 11: Display - Key Registration Completed Screen

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