- When the vehicle running speed has fallen below the lower speed limit (approximately 30 km/h [20 mph])
Lexus NX: Fail-safe Chart
Lexus NX Service Manual / Engine & Hybrid System / Cruise Control / Dynamic Radar Cruise Control System / Fail-safe Chart
FAIL-SAFE CHART
Constant Speed Control Mode:| Condition | Multi-information Display | Master Warning Light | Cruise Control Indicator | Warning Buzzer |
|---|---|---|---|---|
| When the following condition(s) occurs while the vehicle is in motion during cruise control, the system clears the set vehicle speed and cancels cruise control. | - | Does not illuminate | Illuminates | - |
| When the following condition(s) occurs while the vehicle is in motion during cruise control, the system clears the set vehicle speed and cancels cruise control. Cruise control is prohibited until the power switch is turned off.
| - | Illuminates | Does not illuminate | - |
| When the following condition(s) occurs while the vehicle is in motion during cruise control, there is a possibility of overloading or an overly high set vehicle speed and such. Clear the set vehicle speed and cancel cruise control (can be reset).
| - | Does not illuminate | Illuminates | - |
| When the following condition(s) occurs while the vehicle is in motion during cruise control, the system clears the set vehicle speed and cancels cruise control. Cruise control is prohibited until the power switch is turned off.
| Cruise Control Malfunction Visit Your Dealer | Illuminates | Does not illuminate | Sounds |
| When the following condition(s) occurs while the vehicle is in motion during cruise control, cruise control (set vehicle speed is held) is canceled.
| - | Does not illuminate | Illuminates | - |
Automatic Cancel Control
Vehicle-to-Vehicle Distance Control Mode:| Condition | Multi-information Display | Master Warning Light | Cruise Control Indicator | Warning Buzzer |
|---|---|---|---|---|
| When the following condition(s) occurs while the vehicle is in motion during dynamic radar cruise control, the system clears the set vehicle speed and cancels cruise control. Cruise control is prohibited until the power switch is turned off.
| - | Illuminates | Does not illuminate | - |
| When the following condition(s) occurs while the vehicle is in motion during dynamic radar cruise control, the system clears the set vehicle speed and cancels cruise control. Cruise control is prohibited until the power switch is turned off.
| Cruise Control Malfunction Visit Your Dealer | Illuminates | Does not illuminate | Sounds |
| When the following condition(s) occurs while the vehicle is in motion during dynamic radar cruise control, the system clears the set vehicle speed and cancels cruise control. Control is prohibited until the dynamic radar cruise control system is turned off and turned on again. Also, cruise control is prohibited until system returns to normal from the following condition.
HINT: It is possible that the system has entered fail-safe mode due to snow or water on the front grille. | Radar Cruise Control Unavailable See Owner's Manual | Illuminates | Does not illuminate | Sounds |
| When the following condition(s) occurs while the vehicle is in motion during dynamic radar cruise control, the system clears the set vehicle speed and cancels cruise control. Control is prohibited until the dynamic radar cruise control system is turned off and turned on again. Also, cruise control is prohibited until system returns to normal from the following condition.
| Radar Cruise Control Unavailable | Illuminates | Does not illuminate | Sounds |
| When the following condition(s) occurs while the vehicle is in motion during dynamic radar cruise control, cruise control (set vehicle speed is held) is canceled.
| - | Does not illuminate | Illuminates | - |
| When the following condition(s) occurs while the vehicle is stopped on hold, cruise control is canceled. (w/ Full-Speed Range Following Function)
| Cruise Control Fault Press Brake to Deactivate Visit Your Dealer | Illuminates | Does not illuminate | Sounds |
| When the following condition(s) occurs while the vehicle is stopped on hold, cruise control is canceled. (w/ Full-Speed Range Following Function)
| Radar Cruise Control Unavailable Press Brake to Resume Driving | Does not illuminate | Illuminates | - |
READ NEXT:
Data List / Active Test
DATA LIST / ACTIVE TEST NOTICE:
In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is f
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Dynamic Radar Cruise Control System DTC No. Detection Item DTC Output from Link P0571 Stop Light Switch Circuit Hybrid vehicle control ECU P0575
Vehicle Control History
VEHICLE CONTROL HISTORY NOTICE: Make sure to record any output Vehicle Control History codes before clearing them and checking the Vehicle Control History again. CHECK VEHICLE CONTROL HISTORY (DYNAMIC
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Parts Location
PARTS LOCATION ILLUSTRATION *1 OUTER REAR VIEW MIRROR ASSEMBLY LH *2 OUTER REAR VIEW MIRROR ASSEMBLY RH *3 OUTER MIRROR LH *4 OUTER MIRROR RH *5 NO. 2 ENGINE ROOM RELAY BLOCK - DEF RELAY - ECU-B NO.2 FUSE - DEF FUSE - MIR HTR FUSE - MIRROR FUSE *6 FUSE BLOCK ASSEMBLY -
No Response from ID BOX (B2789)
DESCRIPTION This DTC is stored when LIN communication between the certification ECU (smart key ECU assembly) and ID code box (immobiliser code ECU) stops for 10 seconds or more. DTC No. Detection Item DTC Detection Condition Trouble Area B2789 No Response from ID BOX No communicatio
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