How to Clear Diagnostic Trouble Codes

NOTE: Manufacturer does not provide a procedure for clearing trouble codes without using a scan tool.

HOW TO READ AND ERASE DIAGNOSTIC TROUBLE CODES

Required Special Tool:
MB991958: Scan Tool (MUT-III Sub Assembly)
- MB991824: Vehicles Communication Interface (V.C.I.)
- MB991827: MUT-III USB Cable
- MB991910: Main Harness A

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

NOTE: If the battery voltage is low, diagnostic trouble codes will not be set. Check the battery if scan tool MB991958 does not display.




1. Connect 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. Select "Self-diagnosis.
7. If a DTC is set, it is shown.
8. Choose "Erase DTCs" to erase the DTC.