Adaptive Cruise Control (ACC)
Warning: The Detroit Assurance system is intended solely as an aid for an alert and conscientious professional driver. It is not intended to be relied upon to operate a vehicle. Use the system in conjunction with rearview mirrors and other instruments to safely operate the vehicle. Operate a vehicle equipped with the Detroit Assurance system as if the vehicle were not equipped with a collision warning system.
The Detroit Assurance system is not a substitute for safe, normal driving procedures, nor will it compensate for any driver impairment such as drugs, alcohol, or fatigue.
The Detroit Assurance system will not warn of hazards such as pedestrians, animals, oncoming vehicles, or cross traffic.
Failure to drive safely and use the system properly could result in personal injury and/or death and severe property damage.
Safety Information
Adaptive cruise control (ACC) may not detect narrow vehicles driving in front like motorcycles, or vehicles driving in a different lane.
In particular, be aware of the following situations:
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cornering, entering, and exiting bends;
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vehicles driving in a different lane;
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vehicles changing lanes;
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vehicles exiting the road;
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overtaking;
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winding stretches of road; and
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obstacles and stationary vehicles.
Adaptive cruise control does not compensate for inattentive driving, weather, or traffic conditions. The adaptive cruise control is only an aid. The driver is responsible for maintaining a safe distance from the vehicle in front, maintaining a safe vehicle speed, and braking, and remaining in a lane.
If adaptive cruise control does not detect a vehicle driving in front, the system will accelerate to the set speed.
Overview
See Fig.. and See Table.. for a description of cruise control steering wheel switches.
Fig. 1, Steering Wheel Cruise Control Switches
Table 1, Steering Wheel Controls
|
Steering Wheel Controls |
|
|
Description |
Function |
|
ON/OFF |
Turns adaptive cruise control on or off. |
|
DEC/SET |
Sets the cruise speed while the vehicle is traveling at the desired speed. Pressing and and holding decreases the set cruise speed. |
|
ACC/RES |
Resumes the set speed. Pressing and holding accelerates the set cruise speed. |
|
CNCL |
Cancels the set speed. |
Table 1, Steering Wheel Controls
When a vehicle in front is detected, the driver message center displays the speed of the detected vehicle and the distance to the detected vehicle. See Fig..
Fig. 2, Adaptive Cruise Control Screen
Functions and Activation Conditions
ACC controls speed, and the distance from a vehicle detected in front.
If there is no vehicle in front, ACC operates in the same way as cruise control when the vehicle is traveling above 10 mph (15 km/h).
If ACC detects a vehicle in front driving at a slower speed, the brakes are applied, the engine is derrated, the engine brakes are used, and the vehicle is slowed to maintain the minimum following distance. If the vehicle in front is no longer detected, the vehicle will accelerate to the set speed. The ACC will also slow the vehicle if it exceeds the set speed (on a downhill grade, for example).
ACC cannot be activated, or is automatically deactivated, if:
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the vehicle is traveling slower than 10 mph (15 km/h);
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the transmission is in neutral for more than 5 seconds;
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reverse gear is selected;
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ABS is deactivated;
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there is a malfunction in the brake system or the electronic management system; or
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the distance sensor initialization is not yet complete.
Activating Adaptive Cruise Control
Press the ON/OFF switch on the steering wheel to activate cruise control.
If the brake pedal is pressed, ACC is deactivated automatically.
Setting the Speed
Drive at the desired speed, then press the DEC/SET switch. Cruise control will be activated and the set speed stored.
If cruise control is deactivated, the stored speed can be activated again by pressing the ACC/RES switch. The driver message center will show the cruise control symbol and display the set speed. Cruise control will automatically brake or accelerate the vehicle to maintain the set speed.
Increasing or Reducing Speed
The speed setting can only be set by when driving.
Press DEC/SET to set the cruise speed while the vehicle is traveling at the desired speed. Press and hold to decrease the set cruise speed.
Setting the Distance to the Vehicle in Front
The optional headway switch can be used to set the distance to the vehicle in front. See Fig.. The minimum distance for ACC can be set to 5 levels.
Fig. 3, Headway Switch
Important: Make sure that the minimum distance is maintained to the vehicle in front required by law. Adjust the specified minimum distance to the vehicle in front if necessary.
Press + or – on the headway switch to increase or decrease the specified minimum distance. The driver message center will show the selected minimum distance. The setting will be stored automatically.
Collision Warnings
A warning appears in the driver message center and a double warning tone sounds in the event of a potential collision. See Fig.. The event screen is displayed for as long as the hazardous situation persists.
Fig. 4, Collision Warning Event Screen
If a collision warning appears in the driver message center when the vehicle is in motion, pay attention to the traffic situation and reduce vehicle speed using the service brake. If the accelerator pedal is pressed, or a turn is indicated, the collision avoidance system is suppressed.
Overtaking
Note: It is possible to exceed the set speed when overtaking.
The set speed can be exceeded using the accelerator pedal. When the accelerator pedal is released, the set speed will be resumed.
Deactivating the System
Press the ON/OFF switch, or, press the brake pedal to deactivate cruise control.
Note: The speed remains stored when ACC is deactivated.