2008 Lexus IS 250 Owners Manual - Page 159
2008 Lexus IS 250 Manual
Page 159 highlights
2-4. Using other driving systems The system continues follow-up cruising while adjusting for changes in the speed of the vehicle ahead in order to maintain the vehicle-to-vehicle distance set by the driver. Example of acceleration (when there are no longer vehicles driving slower than the set speed in the lane ahead): When the speed is set to 62 mph (100 km/h) and the vehicle ahead driving at 50 mph (80 km/h) is out of the lane When the vehicle ahead of you executes a lane change, the system slowly accelerates until the set vehicle speed is reached. The system then returns to fixed speed cruising. 2 When driving n Dynamic radar cruise control warning lights, messages and buzzers Warning lights, messages and buzzers are used to indicate a system malfunction or to alert you to the need for caution while driving. (→P. 369) n The dynamic radar cruise can be set when l The shift lever is in D or the 4, 5 or 6 range of S. l Vehicle speed is between approximately 30 mph (45 km/h) and 85 mph (135 km/h). n Accelerating The vehicle can be accelerated normally. n Automatically canceling vehicle-to-vehicle distance control Vehicle-to-vehicle distance control driving is automatically canceled in the following situations. l Vehicle speed falls below 25 mph (40 km/h) l VSC is activated l The sensor cannot operate correctly because it is covered in some way. l The windshield wipers are operating at high speed. l The "ECT SNOW" switch is set to snow mode. If vehicle-to-vehicle distance control driving is automatically canceled for any other reason, there may be a malfunction in the system. Contact your Lexus dealer. 159