2004 Ford F350 Owner Guide 3rd Printing - Page 145

Driving • Some vehicles may be equipped with wheel ornaments that cover the 4x4 manual hub lock. These ornaments must be removed to access the manual hub locks. Electronic shift on the fly (ESOF) 4x4 system (if equipped) If equipped with the Electronic Shift 4WD System, and 4WD Low is selected while the vehicle is moving, the 4WD system will not engage. This is normal and should be no reason for concern. Before 4WD Low can be engaged, the vehicle must be brought to a complete stop, the brake pedal depressed and the transmission placed in N (Neutral ) (on automatic transmissions or the clutch pedal depressed on manual transmissions). The 4WD system: • provides 4x4 High engagement and disengagement while the vehicle is moving. • is operated by a rotary control located on the instrument panel that allows you select 2WD, 4x4 High or 4x4 Low operation. • uses auto-manual hub locks that can be engaged and disengaged automatically based on the 4x4 mode selected. • auto-manual hub locks can be manually overridden by rotating the hub lock control from AUTO to LOCK if desired. • automatic operation of the hub locks is recommended, and will increase fuel economy • For proper operation, make sure that the arrow and the indicator dot on the hub are aligned, and that both hub locks are set the same (both set to AUTO or both set to LOCK). 145 2004 F250/350/450/550 (f23) Owners Guide (post-2002-fmt) USA English (fus)