Diagnostic Mode 04: Reset/delete diagnostic data

Diagnostic Mode 04 is used to reset or delete the following stored information:

• All emission related malfunctions in the DTC memory.
• The operating conditions at which a malfunction was stored will be reset.
• All adaptation values.
• The test results of all diagnostic functions.

Depending on scan tool and protocol used, the information displayed in diagnostic mode 04 may be referred to by different names such as OBDMID (TID), Hex-ID, Component-ID (CID), On-Board Diagnostic Monitor Identifier (OBDMID), or contain no name at all and be referenced by only a number.

Procedure 

• Connect the scan tool.
• Switch the ignition on.
• Select "Diagnostic Mode 03: Interrogating fault memory ".
• Then select "Mode 4: Reset/delete diagnostic data".

The scan tool will display: "Diagnostic data are being erased".

• Switch the ignition off.
• End of diagnosis.