Four-Wheel Drive Systems - Overview
WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
Manual Shift-On-Stop (MSOS
The MSOS system consists of the following:
- Transfer case
- Transfer case shift lever
- Manual locking hubs (hublocks)
- Four-Wheel Drive (4WD) indicators in the IPC message center
- Shift linkage
- Mode Indicator Switch
Electronic Shift-On-The-Fly (ESOF) System
The electronic shift 4WD system consists of the following:
- Transfer case
- TCCM
- High Speed Controller Area Network (HS-CAN)
- Mode Select Switch (MSS)
- Transfer case shift motor
- 4WD indicators and 4WD system messages in the IPC message center
- Constant Vacuum Hublock (CVH)
- CVH solenoid and vacuum lines
- Vacuum pump (diesel engine only)