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4WD system indicator lights
The 4WD system indicator lights illuminate only under the following
conditions. If these lights illuminate when driving in 2WD, contact your
authorized dealer as soon as possible.
• 4x4 HIGH - momentarily
illuminates after the engine is
started. Illuminates when 4H (4x4
High) is engaged. Flashes when
shifting into or out of 4H (4x4 high) (ESOF systems only).
• 4x4 LOW – momentarily
illuminates when the ignition is
turned to the ON position.
Illuminates when 4L (4x4 Low) is
engaged. Flashes when shifting into or out of 4L (4x4 Low) or if the
range shift conditions are not met (ESOF systems only).
Using a Manual Shift On Stop (MSOS) 4x4 system (if equipped)
Note: High shift efforts may be encountered when attempting to
shift into and out of 4x4 modes. It is recommended to allow the
vehicle to roll at a speed below 5 mph (8 km/h) when shifting.
Note: Some noise may be heard as the 4x4 system shifts or engages.
This is normal. In order to reduce engagement noise, it is recommended
that all shifts be performed at speeds below 5 mph (8 km/h).
2H (2WD) – For general on-road driving. Sends power to the rear
wheels only.
4H (4x4 High) – For winter and off-road conditions. Sends power to
front and rear wheels. This mode is not intended for use on dry
pavement.
N (Neutral) – Only used when towing the vehicle.
4L (4x4 Low) – For low-speed off-road applications that require extra
power such as steep grades, deep sand or pulling a boat out of the water.
Sends power to front and rear wheels. This mode is not intended for
use on dry pavement.
4x4
HIGH
4x4
LOW
Driving
286
2010 F-250/350/450/550 (f23)
Owners Guide, 1st Printing
USA (fus)