GF27.60-P-3012CW Emergency Default Mode, Function

GF27.60-P-3012CW Emergency default mode, function
- TRANSMISSION 722.6

In order to guarantee a safe driving condition and in order to avoid damage to the automatic transmission, the electronic transmission control control unit (N15/3) switches to limp-home mode. A fault code assigned to the fault is stored in memory.

All solenoid valves and control solenoid valves are in a de-energized condition during limp-home mode.

Effect
^ The last gear engaged remains engaged.
^ The modulating pressure and shift pressure increase to the maximum value.
^ The torque converter lockup clutch is switched off.

After gear selector switch position "P" is engaged, 2nd gear is engaged in gear selector switch position D. Reverse gear "R" is also available. As a result the vehicle can be brought to the nearest Mercedes-Benz service operation.

The limp-home function remains active until the fault is rectified or the stored fault code is erased. Sporadic errors can be reset via "terminal 15 ON/OFF".