Clear DTC memory, mode 4

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 1999 Volkswagen Jetta, 1999 Volkswagen GTI, 1998 Volkswagen Jetta, 1998 Volkswagen GTI, and 1997 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.

Start engine and let idle. Press --> button -4- to select mode 4 clear DTC memory.

NOTE: DTC codes (if any are stored) must first be read before they can be cleared. Pressing button -4- will not clear the data in DTC memory immediately. In case of operator error, the control module will respond:

Display will appear as shown

Fig 1: Identifying Scan Tool Display - Clear DTC Memory, Mode 4 (1 Of 3)

By pressing the -C- button mode 4 will be exited.

Display will appear as shown

Fig 2: Identifying Scan Tool Display - Clear DTC Memory, Mode 4 (2 Of 3)

By pressing the -Q- button DTC memory will be cleared.

Display will appear as shown

Fig 3: Identifying Scan Tool Display - Clear DTC Memory, Mode 4 (3 Of 3)

NOTE: When the -Q- button is pressed it can cause the engine to run irregularly until mode 4 is exited.

Press -C- button to exit mode 4.

After repairing malfunctions and erasing DTC memory, the readiness code must be created, see READINESS CODE, CREATING . Then the readiness code must be interrogated via mode 41 transfer of diagnostic data, see DIAGNOSTIC DATA .