Ford F series Owner's Manual page 17

The Mechanical Cluster
The following warning lights and gauges are on
the mechanical cluster. All of the warning lights
and gauges alert you to possible problems with
your vehicle. Some of the lights listed are
optional. The following sections detail what each
of these indicators means.
Brake System Warning Light
The warning light for the brakes can show three
things — that either the parking brake is not
fully released, that the brake fluid level is low in
the master cylinder reservoir or the vacuum
pressure is low on diesel engine vehicles. If the
fluid level is low, the brake system should be
checked by a qualified service technician.
This light illuminates when you turn the ignition
key to START to verify that the indicator bulb is
working. If the light stays on or illuminates after
you have released the parking brake fully, have
the hydraulic brake system serviced.
The BRAKE light indicates that the brakes
may not be working properly. Have the
brakes checked immediately.
Brake warning light
RWARNING
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