Self-Clearing

Vehicles Equipped with Tiptronic Transmission:
An on-board diagnostic system with fault memory is integrated in the Tiptronic control module. It can detect and store certain faults on the electronic transmission control system.

If a fault is present it is first stored as a static fault. If the fault no longer exists it first becomes a sporadic fault and "Fault not present" appears in the display of the Tester. The counter is set to 40 in this case.

Sporadic faults are deleted automatically after 40 cold starts of the engine (followed by transmission warm-up).

Fault Erasing Counter:
For each recognized fault, a respective fault erasing counter is kept. The counter determines the memory storage time of the respective fault. At the first recognition of the fault, the fault-erasing counter is set to 80.

If a fault is healed that was recognized as "not shedded", the fault erasing counter is set to 10. Each time a "not shedded" fault is recognized, the fault erasing counter is set to 10. At each recognition of a "not shedded" fault, the fault-erasing counter is set to 40. It retains this value up to the recognized fault healing.

The fault-erasing counter is decreased by 1 after each warm-up cycle, when it involves a "not shedded" fault or a fault that was recognized as healed.

When the fault erasing counter reaches the value 0, the fault will be erased from memory.