Ford Mustang Owner's Manual page 14

The Cluster
The following warning lights and gauges are on
the 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 two
things — that the parking brake is not fully
released, or that the brake fluid level is low in
the master cylinder reservoir. If the fluid level is
low, the brake system should be checked by a
qualified service technician.
The brake system warning light
This light comes on when the parking brake is
set, or if it is not set, it comes on briefly when
you turn the ignition key to START. It normally
goes off shortly after the engine starts and you
release the parking brake. If the light stays on
after you have fully released the parking brake,
have the hydraulic brake system serviced.
The BRAKE light indicates that the brakes
may not be working properly. Have the
brakes checked immediately.
WARNING
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