4WD low engagement
This is directly from the "Owner Guide in your glove box. If you don't have one, you can down load a copy here. Click on "Owner Guides" left column then select year and model.
http://www.motorcraftservice.com/vdi...ageid=&gutsid=
Shifting from 4x4 HIGH (4WD High) to 4x4 LOW (4WD Low)
1. Bring the vehicle to a complete stop.
2. Depress the brake.
3. Place the gearshift in N (Neutral) (automatic transmission) or depress
the clutch (manual transmission).
4. Move the 4WD control to the 4x4
LOW position.
5. Hold the shift conditions until the
LOW RANGE indicator light
illuminates.
6. If the LOW RANGE indicator light
does not illuminate within 15
seconds, let the vehicle creep at a
speed above 1 mph (1.6 km/h), then
repeat steps 1 through 5 before
reporting any shift concerns to your dealer.
Shifting from 4x4 LOW (4WD Low) to 4x4 HIGH (4WD High) or 2WD
(2WD High)
1. Bring the vehicle to a complete stop.
2. Depress the brake.
3. Place the gearshift in N (Neutral) (automatic transmission) or depress
the clutch (manual transmission).
4. Move the 4WD control to the 4x4
HIGH (4WD High) or 2WD (2WD
High) position.
5. Hold the shift conditions until the
LOW RANGE indicator light shuts
off.
6. If the LOW RANGE indicator light
does not shut off within 15
seconds, drive the vehicle above 5
mph (8 km/h), then repeat steps 1
through 5 before reporting any shift concerns to your dealer.
Hope this helps.




