Ford 2009 F-550 v.2 Manuel d'utilisateur télécharger pdf (Page 297)

• 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 each hub is fully

engaged and that both hub

locks are set to the same position (both set to LOCK or both

set to AUTO). To engage LOCK, turn the hub locks completely

clockwise; to engage AUTO, turn the hub locks completely

counterclockwise.

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).

4x4

HIGH

4x4

LOW

2009 F-250/350/450/550 (f23)

Owners Guide, 2nd Printing

USA (fus)

Driving

297

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Ford 2009 F-550 v.2 Manuel d'utilisateur Page 297

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