Active Brake Assist 5 (ABA5)

Overview

Active brake assist 5 (ABA5) is always on. ABA5 uses fused camera and radar signals for improved object recognition, enabling it, in some cases, to recognize potential hazardous situations faster than a driver. If the camera system becomes temporarily disabled, radar signals alone are used.

ABA5 tracks both moving and stationary objects in the vehicle's path and engages in a cascade of actions: visual and auditory warnings, partial braking, and full braking. ABA5 has the capacity to engage full braking on slower moving vehicles, moving pedestrians, parked vehicles, and stopped traffic.

The system may not detect pedestrians or objects in every situation, nor is it a substitute for cautious driving.

Safety Information

If your vehicle is equipped with ABA5 it can:

• react more quickly than a driver to an object in the vehicle's path of travel;

• perform emergency braking; and

• react to moving people with a warning and partial and full braking.

Detroit Assurance ABA5 can minimize the risk of a front-end collision with a moving or stationary vehicle and pedestrians. If ABA5 detects the risk of a front-end collision, it issues an audible and visual warning. If the risk persists, ABA5 automatically initiates partial braking of the vehicle. If the driver does not react to the warnings and partial brake application, ABA5 automatically initiates a full brake application.

ABA5 may also detect people who are moving along the edge of the lane.

ABA5 may not detect vehicles driving in a different lane or narrow vehicles, like motorcycles, driving in front of the vehicle.

Brake the vehicle using the service brake if:

• an event window with the warning symbol appears on the driver display screen;

• an intermittent warning tone sounds; or

• an intermittent warning tone sounds and automatic partial braking is initiated.

ABA5 does not automatically adapt to road and traffic conditions. If no visual and/or acoustic warning is issued in a critical situation:

• ABA5 has not recognized the danger of the situation;

• ABA5 is suppressed; or

• ABA5 has failed.

Activating/Deactivating Active Brake Assist (ABA)

ABA5 is always on.

To override the ABA 5 warning and braking sequence, press the accelerator pedal past the pressure point to engage kickdown.

If there is a system error, the indicator lamp will illuminate and an alert will be shown on the driver display. See Fig.  and Fig. .

Fig. 1, Active Brake Assist (ABA) Indicator Lamp

Fig. 2, Active Brake Assist (ABA) Alert - ICUC

Active Brake Assist 5 (ABA5) Collision Warning and Emergency Braking

If there is a risk of collision, ABA5 issues alerts on the driver display, illuminates the ABA indicator lamp, and sounds an audible warning. In addition, the radio and/or hands-free systems like Detroit Connect are automatically muted.

ABA5 engages in the following warning sequence:

• Warning: An alert appears on the driver display, the radio is muted, and an intermittent warning tone sounds.

• Partial Braking: ABA5 slows the vehicle with automatic partial braking. ABA brakes the vehicle with around 50 percent of the vehicle's maximum braking power.

• Emergency Braking (ABA5): If the driver does not react to the collision warnings or partial brake application, ABA5 automatically initiates emergency braking (full brake application). Warning messages continue to appear on the driver display, the radio stays muted, a continuous warning tone sounds, and ABA5 brakes the vehicle with 100 percent of the vehicle's maximum braking power.

The driver can cancel the ABA warning and partial and full emergency braking by pressing the accelerator pedal beyond the point of resistance (kickdown).

ACC and ABA5 Driving Condition Limitations

See Table  for a description of adaptive cruise control (ACC) and ABA5 limitations in specific driving conditions.

Table 1, Adaptive Cruise Control (ACC) and Active Brake Assist 5 (ABA5) Limitations

Condition	Visual	Description
Cornering, entering and exiting bends		The ability of ABA5 and ACC to detect vehicles on bends is limited. ABA5 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		The ability of ABA5 and ACC to detect vehicles driving in a different lane, or stationary vehicles is limited. ABA5 and ACC may unexpectedly issue warnings or brake the vehicle. ACC may accelerate unexpectedly.
Other vehicles changing lane		The ability of ABA5 and ACC to detect vehicles pulling into your lane is without maintaining a safe distance is limited. When a vehicle enters your lane the distance to it may be too short. Brake the vehicle to increase the distance to the vehicle in front.
		The ability of ABA5 and ACC to detect vehicles pulling into your lane is limited. They do not detect vehicles until they are within the system's detection range. Brake the vehicle to increase the distance to the vehicle in front.
Vehicles turning off		The ability of ABA5 and ACC to detect vehicles turning off is limited. ABA5 and ACC may unexpectedly issue warnings or brake your vehicle.
Overtaking		While passing, ABA5 and ACC may unexpectedly issue warnings or brake your vehicle if the vehicle in front is too close and is in the same lane.
Winding stretches of road		On winding stretches of road, ABA5 and ACC cannot detect which lane the vehicle in front is driving in. ABA5 and ACC may unexpectedly issue warnings or brake your vehicle. ACC may also accelerate the vehicle unexpectedly.
Obstacles and stationary vehicles		ABA5 and ACC cannot detect obstacles or stationary vehicles in front of the detected vehicle. If the detected vehicle turns off, ABA5 and ACC may unexpectedly issue warnings or brake your vehicle. ACC may also accelerate the vehicle unexpectedly.
Stationary objects		ABA5 can unexpectedly issue warnings and brake the vehicle if it detects stationary objects like: vehicles which have broken down signs bridges
Stationary people		ABA5 can react incorrectly to the following conditions: stationary people people or objects that quickly enter the field of detection of the sensor people in a tunnel ABA5 can also react unexpectedly to people who are standing on the roadside in a curve.

Table 1, Adaptive Cruise Control (ACC) and Active Brake Assist 5 (ABA5) Limitations