Collision Warning System
The CWS may require a warm-up period of up to one minute if the outside air temperature is below 32°F (0°C). The DIU will display a warm-up message until the system reaches operating temperature. See Fig..
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CWS with SmartCruise
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CWS Only
Fig. 1, CWS Warm-Up Screens
The alerts given by the VS-400 system are based on the distance to the object ahead, whenever vehicle speed is 10 mph (16 km/h) or faster. The VS-400 CWS identifies and tracks the nearest object in the lane of travel. This object is classified by the range, and assigned a message described under the following headings.
Object Detected
When a vehicle is detected in the same lane of travel within 350 ft (107 m) but farther than a 3-second following distance, the DIU will display OBJECT DETECTED . See Fig..
Fig. 2, Object Detected Alert
3-Second Headway Alert
When a vehicle is detected to be within a 3-second following distance, a single yellow indicator will illuminate and the DIU will display 3 seconds . See Fig..
Fig. 3, 3-Second Alert
2-Second Headway Alert
When the following distance to the object ahead in the same lane of travel decreases to within two seconds, a second yellow indicator will illuminate, the DIU will display 2 seconds , and a single tone will sound. See Fig..
Fig. 4, 2-Second Alert
1-Second Headway Alert
When the following distance to the object ahead in the same lane of travel decreases to within one second, a third yellow indicator will illuminate, the DIU will display 1 sec , and two tones will sound. See Fig..
Fig. 5, 1-Second Alert
Collision Alert: ½-Second Headway
When the following distance to the object ahead in the same lane of travel decreases to 0.5 second, the red indicators all illuminate across of the DIU, the DIU will display COLLISION ALERT , and a tone will sound repeatedly. See Fig..
