Traction-Lok Differential Check Road Test

WARNING: This page is about a different car, the 2017 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.

1.

Place one wheel on a dry surface and the other wheel on ice, mud or snow.

2.

Gradually open the throttle to obtain maximum traction prior to break away. The ability to move the vehicle demonstrates correct performance of a Traction-Lok rear axle assembly.

3.

When starting with one wheel on an excessively slippery surface, a slight application of the parking brake may be necessary to help energize the Traction-Lok feature of the differential. Release the brake when traction is established. Use light throttle on starting to provide maximum traction.

4.

If, with unequal traction, both wheels slip, the limited slip rear axle has done all it can possibly do.

5.

In extreme cases of differences in traction, the wheel with the least traction may spin after the Traction-Lok has transferred as much torque as possible to the non-slipping wheel.