Within slipping mode, the torque converter lockup clutch will be charged with maximum
pressure. This removes influences of the lockup clutch-control (solenoid valve
charateristics, friction discs).
Indication for ‚closing of torque converter lockup clutch‘:
Analysis of vibration and jolting complaints in combination with the fault tree for
closing of torque converter lockup clutch OR to proceed to a lockup clutch function test.

Notes:

„Closing of torque converter lockup clutch“ is only active within one ignition cycle and is
deactivated after switching off / on of the ignition.
The function is deactivated while driving below a specific speed and activated again after
speeding back up.
„closing of torque converter lockup clutch“ can not be used for analysis of humming and
droning complaints.