Traction-Lok Axle - Ford Thunderbird Owner's Manual

If the parking brake is fully released, but
the Brake System light remains on, have
the brakes checked immediately. They
may not be working properly.
The parking brake system is designed for static
parking only and is not designed to stop a
moving vehicle, but you can use the parking
brake to stop your vehicle in an emergency if
the normal brakes fail. However, since the
parking brake applies only the rear brakes, the
stopping distance will increase greatly and the
handling of your vehicle will be adversely
affected.
Traction-Lok Axle (If equipped)
This axle provides added traction on slippery
surfaces, particularly when one wheel is on a
poor traction surface. Under normal conditions
the Traction-Lok axle functions as a standard
rear axle.
Extended use of other than matching size tires
on a Traction-Lok rear axle could result in a
permanent reduction in effectiveness. This loss of
effectiveness does not affect normal driving and
should not be noticeable to the driver.
To avoid injury, never run the engine
with one wheel off the ground, such as
when changing a tire.
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