Registration With Scan Tool MB991958

REGISTRATION WITH THE SCAN TOOL MB991958

CAUTION: To prevent damage to scan tool MB991958, always turn the ignition switch to "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958.

NOTE: Before registration, check that no DTC code is set. If a DTC code is set, resolve the problem beforehand.
Using the key ID register function will cause all key IDs that have been previously registered in the immobilizer-ECU to be erased. All keys need to be registered. Those which have been registered before should be on hand before using this function.
If registering more than one key, do not disconnect scan tool MB991958 halfway through the registration process.
After registering key IDs, check that the engine can be started using all of the keys that have been registered. If the engine will not start, refer to Immobilizer System Diagnosis.







1. Connect the scan tool MB991958 to the data link connector.
2. Turn the ignition switch to "ON" position.







3. Select "Interactive Diagnosis" from the start-up screen.







4. Select "System select.







5. Choose "IMMOBILIZER" from the "POWER TRAIN" tab.







6. Choose "Special Function" from "IMMOBILIZER" screen.







7. Choose "Key registration" from "Special Function" screen.







8. Input the password, and then click the check mark icon.







9. If the key ID was registered successfully, "Progress" indication will turn active (gray). Then the registration process completes. If the key ID failed to be registered, "In-Complete" indication will turn active (gray).
10. The number of keys currently registered will be displayed. To register an additional key, replace the ignition key with the next key to be registered within five seconds. Key ID registration screen will be displayed, then register another key.

NOTE: A maximum of eight keys can be registered.

11. This completes the registration operation. Turn the ignition switch "LOCK" (OFF) and leave it off for approximately ten seconds.
12. Check that the engine can be started with each of the registered ignition keys.
13. Check that the immobilizer system DTC and MFI system DTC did not set.
14. If not DTC is shown, terminate the MUT-III.
15. Turn the ignition switch to "LOCK" (OFF) position.
16. Disconnect scan tool MB991958.