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Home >> Ford >> 2000 >> Contour SE, 2.0 3, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 672 (Four-Wheel Drive Systems - Excursion & F250-F550 Super Duty) >> Diagnosis And Testing >> Four-Wheel Drive Systems - Mechanical Shift >> Principles of Operation >> 4X4 ESOF Locking Hub

4X4 ESOF Locking Hub

WARNING: This page is about a different car, the 2004 Ford Pickup, 2004 Ford F550 Super Duty, 2004 Ford F450 Super Duty, 2004 Ford Excursion, and 2004 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

Many system components are involved in the correct operation of the ESOF (Electronic Shift-On-The-Fly) locking hubs on 1999 and newer Super Duty and Excursion 4X4 vehicles. Before diagnosing the hub locks themselves as the cause of 4X4 concerns, be sure to verify all related system components.