2011 Ford F-150 FX4

[V1GiLaNtE]

Depends on the 4High Jake. Is it a full time or part time? I would imagine yours is part time. Either way you are fine to drive around And yes, leave it unlocked unless you get stuck.. :thumbup:

Part-time Mode - The front and rear axle drives are rigidly coupled in the transfer case. Since the driveline does not permit any speed differentiation between the axles and would cause driveline wind-up, this mode is recommended only for ‘part-time’ use in off-road or loose surface conditions where driveline wind-up is unlikely. Depending on the road condition and the weight over the axles, up to full torque could go to either axle.


Full-time Mode - Both axles are driven at all times, but an inter-axle differential permits the axles to turn at different speeds as needed. This allows the vehicle to be driven ‘full-time’ in this mode, irrespective of the nature of the road surface, without fear of driveline wind-up. With standard bevel gear differentials the torque split is 50:50. Planetary differentials can provide asymmetric torque splits as needed. A system that operates permanently in the full-time mode is sometimes called the ‘All-the-Time 4WD’, 'All-Wheel-Drive' or ‘AWD’. If the inter-axle differential is locked out, then the mode reverts to a ‘part-time mode’.

Edit: Fun little video from Ferd.

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