Cadillac 2013 ATS Owner's Manual page 202

9-28 Driving and Operating
The system has a parking brake
status light and a parking brake
warning light. See Parking Brake
Light on page 5 17 and Service
Electric Parking Brake Light on
page 5 17. There are also parking
brake related Driver Information
Centre (DIC) messages. See Brake
System Messages on page 5 29. In
case of insufficient electrical power,
the EPB cannot be applied or
released.
Before leaving the vehicle, check
the parking brake status light to
ensure that the parking brake is
applied.
EPB Apply
The EPB can be applied any time
the vehicle is stopped. The EPB is
applied by momentarily lifting up on
the EPB switch. Once fully applied,
the parking brake status light will be
on. While the brake is being applied,
the status light will flash until it is
fully applied. If the light does not
come on or remains flashing, you
need to have the vehicle serviced.
Do not drive the vehicle if the
parking brake status light is flashing.
See your dealer. See Parking Brake
Light on page 5 17.
If the EPB is applied while the
vehicle is in motion, a chime will
sound, and a DIC message will be
displayed. The vehicle will
decelerate as long as the switch is
held in the up position. Releasing
the EPB switch during deceleration
will release the parking brake. If the
switch is held in the up position until
the vehicle comes to a stop, the
EPB will remain applied.
If the parking brake status light
flashes continuously, then the EPB
is only partially applied or released,
or there is a problem with the EPB.
A DIC message will be displayed.
If this light flashes continuously,
release the EPB, and attempt to
apply it again. If this light continues
to flash, do not drive the vehicle.
See your dealer.
If the parking brake warning light is
on, the EPB has detected an
internal error, or a fault in another
system, and is operating with
reduced functionality. To apply the
EPB when this light is on, lift up on
the EPB switch and hold it in the up
position. Full application of the
parking brake by the EPB system
may take a longer period of time
than normal when this light is on.
Continue to hold the switch until the
parking brake status light remains
on. If the parking brake warning light
is on, see your dealer.
Adaptive Cruise Control (if
equipped) may automatically apply
the EPB in some situations when
the vehicle is not moving. This is
normal, and is done to periodically
check the correct operation of the
EPB system. See Adaptive Cruise
Control on page 9 38.
If the EPB fails to apply, the rear
wheels should be blocked to
prevent vehicle movement.