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Fail-Safe Chart [08/2013 - ]

WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
  1. Constant speed control mode and vehicle-to-vehicle distance control mode: 

    If any of the following auto cancel conditions are detected while the dynamic radar cruise control system is controlling vehicle speed, the system clears the stored vehicle speed and cancels control of vehicle speed by the dynamic radar cruise control system.

    Fig 1: Identifying Multi-Information Display, Master Warning Light And Cruise Main Indicator Lights
    GTY405939Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TEXT IN ILLUSTRATION

    *1 Cruise Control Indicator Light
    (Constance speed control mode)
    *2 Cruise Control Indicator Light
    (Vehicle-to-vehicle distance control mode)
    *3 Master Warning Light
    *4 Multi-information Display
    Vehicle Condition Auto Cancel Condition Fail-safe Deactivation Condition
    • Cruise control indicator light goes out
    • A warning message "Check Cruise Control System" is displayed
    • "Pong" warning sound is heard*
    Open or short in stop light switch circuit Cruise control system is turned off and back on again using the cruise control switch (ON-OFF button).
    • Cruise control indicator light goes out
    • A warning message "Check Cruise Control System" is displayed
    • "Pong" warning sound is heard
    • Malfunction in the stop light switch input circuit
    • Malfunction in the cruise control switch cancel circuit
    Power switch is turned off.
    Cruise control indicator light is on Malfunction in the hybrid vehicle control system Cruise control system is turned off and back on again using the cruise control switch (ON-OFF button).
    • *: Only in vehicle-to-vehicle distance control mode
  2. Vehicle-to-vehicle distance control mode: 
    Fig 2: Identifying Multi-Information Display, Master Warning Light And Cruise Main Indicator Light
    GTY405581Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If any of the following auto cancel conditions are detected while the dynamic radar cruise control system is controlling vehicle speed, the system clears the stored vehicle speed and cancels control of vehicle speed by the dynamic radar cruise control system.

    TEXT IN ILLUSTRATION

    *1 Cruise Control Indicator Light
    *2 Master Warning Light
    *3 Multi-information Display
    Vehicle Condition Auto Cancel Condition Fail-safe Deactivation Condition
    • Cruise control indicator light goes out
    • A warning message "Check Cruise Control System" is displayed
    • "Pong" warning sound is heard
    • Malfunction in the millimeter wave radar sensor
    • Beam axis of millimeter wave radar sensor deviates
    • Millimeter wave radar sensor or driving support ECU assembly country specification information malfunction
    • Communication stop between skid control ECU and driving support ECU assembly
    Power switch is turned off and back on (READY) again.
  3. Vehicle-to-vehicle distance control mode: 
    Fig 3: Identifying Multi-Information Display, Master Warning Light And Cruise Main Indicator Light
    GTY403056Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If any of the following auto cancel conditions are detected while the dynamic radar cruise control system is controlling vehicle speed, the system maintains the stored vehicle speed in memory and cancels control of vehicle speed by the dynamic radar cruise control system.

    TEXT IN ILLUSTRATION

    *1 Cruise Control Indicator Light
    *2 Master Warning Light
    *3 Multi-information Display
    Vehicle Condition Auto Cancel Condition Fail-safe Deactivation Condition
    • Cruise control indicator light goes out
    • A warning message "Clean Radar Sensor" is displayed
    • "Pong" warning sound is heard
    There is dirt on millimeter wave radar sensor Cruise control system is turned off and back on again using the cruise control switch (ON-OFF button).
    • Cruise control indicator light goes out
    • A warning message "Cruise Control not available" is displayed
    • "Pong" warning sound is heard
    • Wipers operating on HI setting
    • Millimeter wave radar sensor sensitivity reduced because of bad weather such as rain, fog, snow, or sandstorm
  4. Constant speed control mode: 

    If the following auto cancel condition is detected while the dynamic radar cruise control system is controlling vehicle speed, the system clears the stored vehicle speed and cancels control of vehicle speed by the dynamic radar cruise control system.

    Vehicle Condition Auto Cancel Condition Fail-safe Deactivation Condition
    Cruise control indicator light is on Vehicle speed is lower than stored speed by approximately 16 km/h (10 mph) or more Cruise control switch is pushed -/SET
  5. Constant speed control mode and vehicle-to-vehicle distance control mode: 

    If the following auto cancel condition is detected while the dynamic radar cruise control system is controlling vehicle speed, the system maintains the stored vehicle speed in memory and cancels control of vehicle speed by the dynamic radar cruise control system.

    Vehicle Condition Auto Cancel Condition Fail-safe Deactivation Condition
    Cruise control indicator light is on
    • Vehicle speed is lower than low speed limit (approximately 40 km/h (25 mph)) while driving with cruise control system controlling vehicle speed
    • Electronically controlled brake system operates while driving with cruise control system controlling vehicle speed
    Push the cruise control switch to +/RES