Problem Symptoms Table [11/2023 - ]
NOTE:
- Before replacing the ECM, refer to Registration.
- When the ECM is replaced, update the ECU security key.
Refer to UPDATE ECU SECURITY KEY [11/2023 - ]
- When replacing the millimeter wave radar sensor assembly, always replace it with a new one. If a millimeter wave radar sensor assembly which was installed to another vehicle is used, the information stored in the millimeter wave radar sensor assembly will not match the information from the vehicle and a DTC may be stored.
- When the combination meter assembly is replaced, update the ECU security key.
Refer to UPDATE ECU SECURITY KEY [11/2023 - ]
- When the millimeter wave radar sensor assembly has been replaced with a new one, it is necessary to perform millimeter wave radar sensor assembly beam axis alignment and to clear the vehicle control history. Before performing the Driving Adjustment, make sure to read Before Starting Driving Adjustment.
HINT:
Beam axis alignment of the millimeter wave radar sensor assembly can be performed using either Triangle Target, Flat Surface Target or Driving Adjustment.
Triangle Target: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ]
Flat Surface Target: Refer to TARGET ADJUSTMENT (FLAT SURFACE TARGET) [10/2022 - ]
Driving Adjustment: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ]
- When replacing the forward recognition camera, replace it with a new one. If a forward recognition camera which was installed to another vehicle is used, the information stored in the forward recognition camera will not match the information from the vehicle and a DTC may be stored.
- When the forward recognition camera is replaced with a new one or the windshield glass is replaced or removed/installed, make sure to read Before Starting Adjustment, then perform optical axis alignment for the forward recognition camera and clear the vehicle control history for each system.
HINT:
Forward recognition camera axis alignment can be performed by using either One Time Recognition, Sequential Recognition or Driving Adjustment.
One Time Recognition: Refer to TARGET ADJUSTMENT (ONE TIME RECOGNITION) [09/2020 - ]
Sequential Recognition: Refer to TARGET ADJUSTMENT (SEQUENTIAL RECOGNITION) [09/2020 - ]
Driving Adjustment: Refer to DRIVING ADJUSTMENT [09/2020 - ]
- When the forward recognition camera is replaced, update the ECU security key.
Refer to UPDATE ECU SECURITY KEY [11/2023 - ]
HINT:
- Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
- Determine the problem systems, then perform the respective inspection procedures.
- By using the vehicle control history, various control parameter history can be checked.
DYNAMIC RADAR CRUISE CONTROL SYSTEM
| Symptom | Suspected Area | Link |
|---|---|---|
| The dynamic radar cruise control system cannot be turned on using the cruise control main switch | CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ] |
| Steering pad switch circuit | Refer to VEHICLE CONTROL HISTORY [11/2023 - ] | |
| Cruise main indicator light circuit | Refer to Cruise Main Indicator Light Circuit [11/2023 - ] | |
| Forward recognition camera | Refer to REMOVAL [11/2023 - ] | |
| ECM | Refer to REMOVAL [11/2023 - ] | |
| The dynamic radar cruise control mode cannot be changed between vehicle-to-vehicle distance control mode and constant speed control mode | CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ] |
| Steering pad switch circuit | Refer to Steering Pad Switch Circuit [11/2023 - ] | |
| ECM | Refer to REMOVAL [11/2023 - ] | |
| The vehicle-to-vehicle distance cannot be changed | CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ] |
| Distance control switch circuit | Refer to Distance Control Switch Circuit [11/2023 - ] | |
| Forward recognition camera | Refer to REMOVAL [11/2023 - ] | |
| Vehicle speed setting cannot be performed (in constant speed control mode) | Fail-safe chart | Refer to FAIL-SAFE CHART [09/2020 - ] |
| CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ] | |
| Steering pad switch circuit | Refer to Steering Pad Switch Circuit [11/2023 - ] | |
| Stop light switch circuit | Refer to DTC P0571-62: Brake Switch "A" Signal Compare Failure [11/2023 - ] | |
| Automatic transaxle system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - ] | |
| Electronically controlled brake system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ] | |
| Forward recognition camera | Refer to REMOVAL [11/2023 - ] | |
| ECM | Refer to REMOVAL [11/2023 - ] | |
| Vehicle speed setting cannot be performed (in vehicle-to-vehicle distance control mode) | Front Radar Sensor Temporary Unavailable (Optical Axis Misalignment) history*1 | Refer to Steering Pad Switch Circuit [11/2023 - ] |
| Fail-safe chart | Refer to FAIL-SAFE CHART [09/2020 - ] | |
| Forward recognition camera is temporarily unavailable | Refer to FAIL-SAFE CHART [09/2020 - ] | |
| Millimeter wave radar sensor assembly is dirty | Refer to FAIL-SAFE CHART [09/2020 - ] | |
| Millimeter wave radar sensor assembly beam axis not adjusted HINT: Beam axis alignment of the millimeter wave radar sensor assembly can be performed using either Triangle Target, Flat Surface Target or Driving Adjustment. |
Triangle Target: Refer to TARGET ADJUSTMENT (TRIANGLE TARGET) [10/2022 - ] Flat Surface Target: Refer to TARGET ADJUSTMENT (FLAT SURFACE TARGET) [10/2022 - ] Driving Adjustment: Refer to DRIVING ADJUSTMENT [10/2022 - ] |
|
| CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ] | |
| Steering pad switch circuit | Refer to Steering Pad Switch Circuit [11/2023 - ] | |
| Automatic transaxle system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - ] | |
| Millimeter wave radar sensor assembly | Refer to REMOVAL [11/2023 - ] | |
| Forward recognition camera | Refer to REMOVAL [11/2023 - ] | |
| Electronically controlled brake system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ] | |
| ECM | Refer to REMOVAL [11/2023 - ] | |
| Control of vehicle speed by the dynamic radar cruise control system is canceled (in constant speed control mode) | Fail-safe chart | Refer to FAIL-SAFE CHART [09/2020 - ] |
| CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ] | |
| Steering pad switch circuit | Refer to Steering Pad Switch Circuit [11/2023 - ] | |
| Stop light switch circuit | Refer to DTC P0571-62: Brake Switch "A" Signal Compare Failure [11/2023 - ] | |
| Automatic transaxle system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - ] | |
| Electronically controlled brake system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ] | |
| ECM | Refer to REMOVAL [11/2023 - ] | |
| Control of vehicle speed by the dynamic radar cruise control system is canceled (in vehicle-to-vehicle distance control mode) | Fail-safe chart | Refer to FAIL-SAFE CHART [09/2020 - ] |
| Forward recognition camera is temporarily unavailable | Refer to FAIL-SAFE CHART [09/2020 - ] | |
| Millimeter wave radar sensor assembly is dirty | Refer to FAIL-SAFE CHART [09/2020 - ] | |
| Millimeter wave radar sensor assembly beam axis not adjusted HINT: Beam axis alignment of the millimeter wave radar sensor assembly can be performed using either Triangle Target, Flat Surface Target or Driving Adjustment. |
Triangle Target: Refer to TARGET ADJUSTMENT (TRIANGLE TARGET) [10/2022 - ] Flat Surface Target: Refer to TARGET ADJUSTMENT (FLAT SURFACE TARGET) [10/2022 - ] Driving Adjustment: Refer to DRIVING ADJUSTMENT [10/2022 - ] |
|
| CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ] | |
| Steering pad switch circuit | Refer to Steering Pad Switch Circuit [11/2023 - ] | |
| Automatic transaxle system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - ] | |
| Stop and Start System*2 | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - ] | |
| Electric parking brake system*3 | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ] | |
| Millimeter wave radar sensor assembly | Refer to REMOVAL [11/2023 - ] | |
| Forward recognition camera | Refer to REMOVAL [11/2023 - ] | |
| Electronically controlled brake system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ] | |
| ECM | Refer to REMOVAL [11/2023 - ] | |
| Hunting/vehicle speed is not constant (in constant speed control mode) | CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ] |
| Electronically controlled brake system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ] | |
| ECM | Refer to REMOVAL [11/2023 - ] | |
| Hunting/vehicle speed is not constant (in vehicle-to-vehicle distance control mode) | Millimeter wave radar sensor assembly is dirty | Refer to VEHICLE CONTROL HISTORY [11/2023 - ] |
| Millimeter wave radar sensor assembly beam axis not adjusted HINT: Beam axis alignment of the millimeter wave radar sensor assembly can be performed using either Triangle Target, Flat Surface Target or Driving Adjustment. |
Triangle Target: Refer to TARGET ADJUSTMENT (TRIANGLE TARGET) [10/2022 - ] Flat Surface Target: Refer to TARGET ADJUSTMENT (FLAT SURFACE TARGET) [10/2022 - ] Driving Adjustment: Refer to DRIVING ADJUSTMENT [10/2022 - ] |
|
| CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ] | |
| Electronically controlled brake system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ] | |
| Millimeter wave radar sensor assembly | Refer to REMOVAL [11/2023 - ] | |
| ECM | Refer to REMOVAL [11/2023 - ] | |
| Vehicle speed control by the dynamic radar cruise control system is not canceled when the CANCEL switch is pushed | Steering pad switch circuit | Refer to Steering Pad Switch Circuit [11/2023 - ] |
| ECM | Refer to REMOVAL [11/2023 - ] | |
| Moving the shift lever does not cancel control of vehicle speed by the dynamic radar cruise control system | Park/neutral position switch assembly | Refer to REMOVAL [10/2022 - ] |
| Transmission floor shift assembly | Refer to REMOVAL [10/2022 - ] | |
| Automatic transaxle system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - ] | |
| ECM | Refer to REMOVAL [11/2023 - ] | |
| Depressing the brake pedal does not cancel control of vehicle speed by the dynamic radar cruise control system | Stop light switch circuit | Refer to DTC P0571-62: Brake Switch "A" Signal Compare Failure [11/2023 - ] |
| ECM | Refer to REMOVAL [11/2023 - ] | |
| Control cannot be canceled while the vehicle is stopped | CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ] |
| Electronically controlled brake system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ] | |
| Electric parking brake system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ] | |
| Seat belt warning system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ] | |
| Front door courtesy switch circuit | Refer to Front Door Courtesy Switch Circuit [11/2023 - ] | |
| ECM | Refer to REMOVAL [11/2023 - ] | |
| Control cannot be canceled by operating the parking brake | Electric parking brake system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ] |
| CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ] | |
| Skid control ECU (brake actuator assembly) | Refer to REMOVAL [11/2023 - ] | |
| ECM | Refer to REMOVAL [11/2023 - ] | |
| Even though the millimeter wave radar sensor assembly and forward recognition camera are not dirty, the warning message "Radar Cruise Control Unavailable See Owner's Manual" is displayed | Millimeter wave radar sensor assembly | Refer to REMOVAL [11/2023 - ] |
| Forward recognition camera | Refer to REMOVAL [11/2023 - ] | |
| The vehicle approach warning buzzer does not sound | Meter / gauge system | except 12.3 Inch Display: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ] for 12.3 Inch Display: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - ] |
| Check millimeter wave radar sensor assembly installation position | Refer to INSTALLATION [09/2020 - ] | |
| Check installation of forward recognition camera | Refer to INSTALLATION [11/2023 - ] | |
| Forward recognition camera | Refer to REMOVAL [11/2023 - ] | |
| Millimeter wave radar sensor assembly | Refer to REMOVAL [11/2023 - ] | |
| Even though the vehicle approach warning buzzer is sounding, brake control is not performed to decelerate the vehicle | Electronically controlled brake system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ] |
| CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ] | |
| Forward recognition camera | Refer to REMOVAL [11/2023 - ] | |
| ECM | Refer to REMOVAL [11/2023 - ] | |
| Even though the SET function is operating, the cruise SET indicator does not illuminate | CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ] |
| Cruise SET indicator light circuit | Refer to Cruise SET Indicator Light Circuit [11/2023 - ] | |
| ECM | Refer to REMOVAL [11/2023 - ] | |
| The cruise control indicator remains illuminated | CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ] |
| Cruise main indicator light circuit | Refer to Cruise Main Indicator Light Circuit [11/2023 - ] | |
| ECM | Refer to REMOVAL [11/2023 - ] | |
| Indicators are not displayed on the multi-information display in the combination meter assembly | CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ] |
| ECM | Refer to REMOVAL [11/2023 - ] | |
| A buzzer does not sound when control of vehicle speed by the dynamic radar cruise control is canceled | CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ] |
| ECM | Refer to REMOVAL [11/2023 - ] | |
| The dynamic radar cruise control system operates normally but the curve speed reduction function does not operate | Customize parameters | Refer to CUSTOMIZE PARAMETERS [09/2020 - ] |
| Front camera system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ] | |
| Forward recognition camera | Refer to REMOVAL [11/2023 - ] |
- *1: When "Radar Cruise Control Unavailable" is displayed and there is "Front Radar Sensor Temporary Unavailable (Optical Axis Misalignment)" history, the beam axis of the millimeter wave radar sensor assembly may be being aligned. In this case, wait for beam axis alignment to complete. When beam axis alignment is complete, "Radar Cruise Control Unavailable" stops being displayed.
- *2: w/ Stop and Start System
- *3: w/o Stop and Start System