Electronic Shift-On-The-Fly (ESOF) System
WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
The Electronic Shift-On-The-Fly (ESOF) system consists of the following components:
- ATCM
- TCCM (located near the passenger kick panel)
- IWE (one on each front hub)
- 4WD mode indicators and messages in the IPC message center
- Transfer case with shift motor and synchronization clutch
Vehicles equipped with the Electronic Shift On-The-Fly (ESOF) system can operate in 2WD (2H), 4WD High (4H), or 4WD low (4L). When shifting into or out of 4WD (4L) range, the TCCM requires that the vehicle speed is less than 5 km/h (3 mph) and the transmission is in NEUTRAL.
The transfer case is equipped with an electronically controlled clutch which is located inside the case. This clutch is used to synchronize the speed of the front driveline with the rear driveline during 2WD (2H) to 4WD High (4H) shifts.