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Home >> Lexus >> 2020 >> RC F Base >> Repair and Diagnosis >> Accessories & Equipment >> Cruise Control Systems >> Dynamic Radar Cruise Control System - Diagnostics - Introduction (2 Of 2) >> Dynamic Radar Cruise Control System >> Diagnosis System [09/2014 - 11/2017] >> Diagnosis System [09/2014 - 11/2017]
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Diagnosis System [09/2014 - 11/2017]

  1. DIAGNOSIS FUNCTION 
    1. The diagnosis function makes the cruise control indicator go off and the master warning light illuminate, and displays a warning message when a malfunction is detected. When a malfunction occurs in the dynamic radar cruise control system, the DTCs are stored in the driving support ECU assembly.
      GTY470822Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Master Warning Light
      *2 Cruise Control Indicator
      (Vehicle-to-vehicle distance control mode)
      *3 Multi-information Display
  2. DESCRIPTION 
    1. The driving support ECU assembly controls the dynamic radar cruise control system of the vehicle. The data and DTCs relating to the dynamic radar cruise control system can be read via the DLC3 of the vehicle. Use the Techstream to check and solve the problem.
  3. CHECK DLC3 
    1. Check the DLC3.

      Refer to GENERAL INFORMATION [09/2014 - ]

  4. CHECK INDICATOR 
    GTY463165Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *1 Master Warning Light
    *2 Multi-information Display
    1. When a malfunction occurs in the dynamic radar cruise control system, the system turns off the cruise control indicator and the master warning light illuminates at the same time a "pong" sound is heard. Also, "Check Cruise Control System" is displayed in the combination meter assembly and the driving support ECU assembly stores DTCs.
      NOTE:

      If DTCs related to the communication system are stored, "Check Cruise Control System", which is displayed in the combination meter assembly, disappears when the system returns to normal.

      If DTCs not related to the communication system are stored, "Check Cruise Control System", which is displayed in the combination meter assembly, disappears when the engine switch is turned off then back on (IG) after the system returns to normal.