Forward-Looking-Radar (FLR) Warning System

If the VS-400 reads any vehicle speed before the forward-looking-radar has time to warm up, a single tone will sound, and one of the following screens will display. See Fig.. The FLR may require a warm-up period of up to 5 minutes in extreme cold outside temperature conditions.

FLR with SmartCruise

FLR Only

Fig. 1, FLR Warm-Up Screens, VORAD

The VS-400 FLR identifies and tracks the nearest object in the lane of travel. This object is classified by the range, and assigned one of the messages see Fig., see Fig., see Fig., see Fig., and see Fig., and described under the following seven headings.

The alerts given by the VS-400 system are based on the “headway” to the object ahead, whenever vehicle speed is 10 mph (16 km/h) or greater.

Object Detected

When an object is in the lane of travel, the VS-400 system displays the following message and tone. See Fig..

• information message: OBJECT DETECTED

• tone sequence: none

Fig. 2, Object Detected Alert, VORAD

3-Second Headway Alert

When a moving object is in the lane of travel, and the headway is greater than 2 seconds, up to and including 3 seconds, the DIU displays the following message. See Fig..

• information message: 3 seconds

• tone sequence: none

Fig. 3, 3-Second Alert, VORAD

2-Second Headway Alert

When the vehicle is closing on a moving object in the lane of travel, and the headway is greater than 1 second, up to and including 2 seconds, the DIU displays the following message and tones. See Fig..

• information message: 2 seconds

• tone sequence: "2-Second closing headway alert" tones are sounded. (Note: This tone sequence is not sounded if the brakes are applied.)

Fig. 4, 2-Second Alert, VORAD

1-Second Headway Alert

When the vehicle is closing on a moving object in the lane of travel, and the headway is greater than 0.5 seconds, up to and including 1 second, the DIU displays the following message and tones. See Fig..

• information message: 1 second

• tone sequence: "1-Second closing headway alert" tones are sounded. (Note: This tone sequence is not sounded if the brakes are applied.)

Fig. 5, 1-Second Alert, VORAD

Collision Alert: ½-Second Headway

When the vehicle is closing on a moving object in the lane of travel, and the headway is 0.5 second or less, the DIU displays the following message and tones. See Fig..

• information message: COLLISION ALERT

• tone sequence: "½-Second closing alert" tones are sounded continuously.

Fig. 6, Collision Alert, VORAD

Collision Alert: Slow Moving Object

See Fig.. If the headway to a slow moving object is 3 seconds or less and the vehicle turn radius is 750 feet or more, the collision alert message is displayed and the "slow moving object tone" is sounded, provided:

• the vehicle speed is greater than 35 mph (56 km/h);

• the speed of the object is greater than 5 ft (1-1/2 m) per second;

• the object is in the lane of travel, and within 220 feet (67 meters) of the vehicle;

• the object speed is less than 80% of the host vehicle speed.

Collision Alert: Stationary Object

See Fig.. If the headway to a stationary object is 3 seconds or less, and the vehicle turn radius is 750 feet (229 meters) or more, the collision alert message is displayed and the "stationary object tone" is sounded, provided the object is in the lane of travel, and within 220 feet (67 meters) of the vehicle.