Delete DTC memory, function

The DTC memory can only be deleted when in diagnosis mode. The deletion process is dependent on the current diagnosis mode display and can be performed in all display ranges.



Before deleting all fault codes should be called up first and noted down for subsequent troubleshooting. A fault that is still present is entered straight away again after the deletion process.

The deleting process using the display and control elements on the onboard instrument cluster (GI) is show below.

For calling and deleting off-board e.g. using the hand-held tester, the respective operating instructions for each test device used are valid.

The displays are shown in the green display field.

W54.30-0004-01

Models 950.0/1/2/3, 952.0/1/3, 953.1/3, 954.0/1/2/4, 957

Models 375.3, 950.5/6, 952.5/6, 953.6, 954.5

W00.20-1020-01

Deletion process:

Diagnosis mode for the

WS/FSS active



Start deletion process by pressing the "RESET" (4) and

"QUIT" (2) keys.

 First, activate the "RESET" key, hold the key down and then

press the "QUIT" key



FSS Reset 2 s display for confirmation

of deletion process



FSS after a successful deletion process the electronic system's designation is displayed again



The system returns to the start of the diagnosis display mode following the deletion process. The WS/FSS diagnosis data can now be called up again, the next electronic system selected, or normal mode may be selected again.



Calling up of the

WS/FSS diagnosis data again by

pressing the

"INFO" (3) key  MB part number is displayed again

Selection of next

electronic system

by pressing the

"SYSTEM" (1) key  The designation of the next electronic system is displayed with or without fault code

return to normal mode

by pressing the

"QUIT" key  No display in green display field