Brake System Warning; Light - Cadillac Automobile Owner's Manual

5-18 Instruments and Controls
The OBD II (On-Board
Diagnostics) system determines
that critical emission control
systems have not been
completely diagnosed. The
vehicle would be considered not
ready for inspection. This can
happen if the 12-volt battery has
recently been replaced or run
down. The diagnostic system is
designed to evaluate critical
emission control systems during
normal driving. This can take
several days of routine driving.
If this has been done and the
vehicle still does not pass the
inspection for lack of OBD II
system readiness, your dealer
can prepare the vehicle for
inspection.

Brake System Warning

Light

With the ignition on, the brake
system warning light comes on
when the parking brake is set. If the
vehicle is driven with the parking
brake engaged, a chime sounds
when the vehicle speed is greater
than 5 km/h (3 mph).
The vehicle brake system consists
of two hydraulic circuits. If one
circuit is not working, the remaining
circuit can still work to stop the
vehicle. For normal braking
performance, both circuits need to
be working.
If the warning light comes on and a
chime sounds there could be a
brake problem. Have the brake
system inspected by your dealer.
This light can also come on due to
low brake fluid. See
for more information.
Metric
This light comes on briefly when the
ignition is turned to ON/RUN. If it
does not, have it fixed so it will be
ready to warn if there is a problem.
If the light comes on while driving,
pull off the road and stop carefully.
The pedal could be harder to push
or could go closer to the floor. It can
take longer to stop. If the light is still
on, have the vehicle towed for
service. See
.
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