Ford 2002 F-150 v.2 Manuel d'utilisateur télécharger pdf (Page 187)

• If the vehicle goes from one type of surface to another (i.e., from

concrete to gravel) there will be a change in the way the vehicle

responds to a maneuver (steering, acceleration or braking). Again,

avoid these abrupt inputs.

Parking

On some 4WD vehicles, when the transfer case is in the N (Neutral)

position, the engine and transmission are disconnected from the rest of

the driveline. Therefore, the vehicle is free to roll even if the automatic

transmission is in P (Park) or the manual transmission is in gear. Do not

leave the vehicle unattended with the transfer case in N (Neutral)

position. Always set the parking brake fully and turn off the ignition

when leaving the vehicle.

4WD Systems

4WD (when you select a 4WD mode) uses all four wheels to power the

vehicle. This increases traction, enabling you to drive over terrain and

road conditions that a conventional two-wheel drive vehicle can’t.

Power is supplied to all four wheels

through a transfer case. On 4WD

vehicles, the transfer case allows

you to select 4WD when necessary.

Information on transfer case

operation and shifting procedures

can be found in the Driving

chapter. Information on transfer

case maintenance can be found in the Maintenance and specifications

chapter. You should become thoroughly familiar with this information

before you operate your vehicle.

Normal characteristics

On some 4WD models, the initial shift from two-wheel drive to 4x4 while

the vehicle is moving can cause some momentary clunk and ratcheting

sounds. This is the front drivetrain coming up to speed and the

automatic locking hubs engaging and is not cause for concern.

Sand

When driving over sand, try to keep all four wheels on the most solid

area of the trail. Avoid reducing the tire pressures but shift to a lower

gear and drive steadily through the terrain. Apply the accelerator slowly

and avoid spinning the wheels.

If you must reduce the tire pressure for whatever reason in sand, make

sure you re-inflate the tires as soon as possible.

Driving

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Ford 2002 F-150 v.2 Manuel d'utilisateur Page 187