2011 Lexus IS 350 Owners Manual - Page 170
2011 Lexus IS 350 Manual
Page 170 highlights
2-4. Using other driving systems n Cruise control can be set when l Vehicles with an automatic transmission: the shift lever is in the D position or S position. However, it cannot be set if any of the ranges 1 through 3 has been selected. l Vehicle speed is more than approximately 25 mph (40 km/h). n Accelerating The vehicle can be accelerated normally. After acceleration, the set speed resumes. n Automatic cruise control cancellation 2 When driving The set speed is automatically cancelled in any of the following situations. l Actual vehicle speed falls more than 10 mph (16 km/h) below the preset vehicle speed At this time, the memorized set speed is not retained. l Actual vehicle speed is below 25 mph (40km/h) l VSC is activated n If the cruise control indicator light flashes Turn the "ON-OFF" button off once, and then reactivate the system. If the cruise control speed cannot be set or if the cruise control cancels immediately after being activated, there may be a malfunction in the cruise control system. Have the vehicle inspected by your Lexus dealer. 177