Emergency Running Mode
EMERGENCY RUNNINGIf one or more components or sensors fail, the Transmission Control Module (TCM) activates corresponding substitute functions or backup programs. This ensures that the automatic transmission operates without any damage.
EMERGENCY RUNNING MODE I
If critical malfunctions occur and the TCM is active, the gear engaged at that moment is maintained initially. The TCM activates the "Emergency Running Mode I" as soon as the driving situation permits it while ensuring transmission security and road safety.
^ Transmission shifts out of all forward gears into hydraulic 4th gear.
^ Torque converter clutch is open.
^ All solenoid valves are de-energized.
^ Maximum shift pressure applied to the power-transmitting elements.
^ Reverse gear can be engaged.
^ Selector lever lock is inactive (in "P" and "N").
^ All the segments of the gear display light up completely.
EMERGENCY RUNNING MODE II
If the TCM fails (e.g. power failure or failure of wiring connection). the transmission immediately continues to operate in "Emergency Running Mode II".
^ Transmission shifts out of all forward gears into hydraulic 4th gear.
^ Torque converter clutch is open.
^ All solenoid valves are deenergized.
^ Maximum shift pressure applied to the power-transmitting elements.
^ Reverse gear can be engaged.
^ Selector lever lock is inactive (in "P" and "N").
^ All the segments of the gear display are dark.
^ The TCM is completely inoperative and it is not possible to initiate On Board Diagnostic (OBD).