Collision Warning and Emergency
Braking
If there is a risk of collision, ABA issues alerts on the
driver display, sounds an audible warning, and illumi-
nates the ABA indicator lamp on the dash. See
Fig. 5.6. In addition, the radio and/or hands-free sys-
tems like Detroit Connect are muted. The ABA series
of warnings is as follows:
•
Warning (ABA): An alert appears on the driver
display and an intermittent warning tone
sounds.
•
Partial Braking (ABA): If the driver does not
respond, the system pulses the brakes while
presenting a visual alert on the dash and
sounding a solid warning tone. At this point
ABA brakes the vehicle with around 50% of the
vehicle’s maximum braking power.
•
Emergency braking (ABA): If the driver does
not react to the collision warnings or partial
brake application, ABA automatically initiates
emergency braking (full brake application). The
warning message appears on the driver dis-
play, and a continuous warning tone sounds.
CAUTION
After emergency braking, the vehicle is held by
the service brake for up to 5 seconds to prevent
it from rolling away.
After an emergency braking maneuver has been
performed, retake control of the vehicle as soon
as possible and, paying attention to the traffic
situation, remove the vehicle from the area of
danger. Stop the engine and apply the parking
brake. Inspect the vehicle to ensure it is in
proper operating order and confirm the load is
secured before resuming driving.
Always apply the parking brake upon shutting
the engine off or prior to exiting the vehicle.
The driver can interrupt emergency braking by press-
ing the accelerator pedal beyond the point of resis-
tance (kickdown).
Driving Situations
See Table 5.2 for a description of adaptive cruise
control and active brake assist limitations in specific
driving conditions.
Active Brake Assist Limitations
Condition Visual Description
Cornering, entering
and exiting bends
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The ability of ABA and ACC to detect vehicles on bends is
limited.
ABA and ACC may unexpectedly issue warnings or brake
the vehicle.
ACC may also accelerate the vehicle unexpectedly.
Driving in a different
lane, and stationary
vehicles
12/18/2014 f040835a
The ability of ABA and ACC to detect vehicles driving in a
different lane is limited.
ABA and ACC may unexpectedly issue warnings or brake
the vehicle.
ACC may also accelerate the vehicle unexpectedly.
With Active Brake Assist 4.0, the radar tracks stationary
objects and has the capacity to engage full braking on
these objects, such as a parked vehicle or stopped traffic in
the vehicle’s path.
03/20/2008 f611000
123
CHECK
STOP
Fig. 5.6, ABA Indicator Lamp
Detroit Assurance 4.0
5.6
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