Lexus IS250 IS220d GSE20 ALE20 - CRUISE CONTROL
DYNAMIC RADAR CRUISE CONTROL SYSTEM - FAIL-SAFE CHART
| Constant speed control mode and vehicle-to-vehicle distance control mode: |
If the following conditions are detected while the dynamic radar cruise control system is in operation, the system clears the stored vehicle speed in the ECM and cancels the dynamic radar cruise control operation.
| Vehicle Condition | Auto Cancel Condition | Fail-safe Deactivation Condition |
CRUISE main indicator light blinks Master warning light comes on "Check Cruise System" is displayed "Pong" warning sound is heard | Open or short in stop light switch circuit Problem with vehicle speed signal Problem with throttle position sensor and motor | Turn cruise control main switch ON again |
| Vehicle-to-vehicle distance control mode: |
If the following conditions are detected while the dynamic radar cruise control system is in operation, the system clears the stored vehicle speed in the ECM and cancels the dynamic radar cruise control operation.
| Vehicle Condition | Auto Cancel Condition | Fail-safe Deactivation Condition |
CRUISE main indicator light blinks Master warning light comes on "Check Cruise System" is displayed "Pong" warning sound is heard | There is problem with millimeter wave radar sensor Beam axis of millimeter wave radar sensor deviates | Engine switch ON (IG) again |
| Vehicle-to-vehicle distance control mode: |
If the following conditions are detected while the dynamic radar cruise control system is in operation, the system maintains the stored vehicle speed in the ECM and cancels the dynamic radar cruise control operation.
| Vehicle Condition | Auto Cancel Condition | Fail-safe Deactivation Condition |
Master warning light comes on "Clean Radar Sensor" is displayed "Pong" warning sound is heard | There is dirt on millimeter wave radar sensor | Recover from condition on left (RESUME operation is possible after recovery) |
Master warning light comes on "Cruise not Available" is displayed "Pong" warning sound is heard | Wiper switch is in HI position ECT-SNOW switch is on Millimeter wave radar sensor is least sensitive because of bad weather such as rain, fog, snow, and sandstorms | Recover from condition on left (RESUME operation is possible after recovery) Turn cruise control main switch ON again |
| Constant speed control mode and vehicle-to-vehicle distance control mode: |
If the following conditions are detected while the dynamic radar cruise control system is in operation, the system clears the stored vehicle speed and cancels the dynamic radar cruise control operation.
| Vehicle Condition | Auto Cancel Condition | Fail-safe Deactivation Condition |
| CRUISE main indicator light goes off | Vehicle speed is lower than low speed limit (approx. 40 km/h (25 mph)) while running with cruise control on Vehicle speed is lower than stored vehicle speed by 16 km/h (9.9 mph) or more while running with cruise control on | Push the cruise control main switch to RESUME/ACCEL |