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Home >> BMW >> 2004 >> 745Li >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - Service Information >> 6-Speed Automatic Transmission >> System functions >> Overlap Control
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Overlap Control

Overlap control provides gentle shift characteristics as follows: With overlap control, several multi-plate clutches are in use at the same time. Here, pressure is reduced in the active multi-plate clutch and at the same time built up in the clutch that is about to be activated. The reduction and build-up of pressure is maintained until a synchronized speed is reached. At this point, the hydraulic pressure for the multi-plate clutch to be activated can be built up completely. Overlap control is active for all gearshifts from 1st to 6th gear and from 6th to 1st gear.