Note
Before replacing the ECM, refer to Service Bulletin.
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. As a result, a DTC may be stored.
When the millimeter wave radar sensor assembly is replaced with a new one, adjustment of the radar sensor beam axis must be performed.
When replacing the forward recognition camera, always 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. As a result, a DTC may be stored.
If the forward recognition camera has been replaced with a new one, be sure to perform Recognition Camera/Target Position Memory and Recognition Camera Axis Adjust.
Tech Tips
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.
| Symptom | Suspected Area | Link |
|---|---|---|
| The dynamic radar cruise control system cannot be turned on using the cruise control main switch | CAN communication system | |
| Steering Pad switch circuit | ||
| Cruise main indicator light circuit | ||
| ECU Power Source Circuit | ||
| Combination meter assembly | ||
| Millimeter wave radar sensor assembly | ||
| ECM | ||
| The dynamic radar cruise control mode cannot be changed between vehicle-to-vehicle distance control mode and constant speed control mode | CAN communication system | |
| Steering Pad switch circuit | ||
| Combination meter assembly | ||
| ECM | ||
| The vehicle-to-vehicle distance cannot be changed | CAN communication system | |
| Distance control switch circuit | ||
| Combination meter assembly | ||
| Forward recognition camera | ||
| ECM | ||
| Vehicle speed setting cannot be performed (in constant speed control mode) | Fail-safe chart | |
| CAN communication system | ||
| Steering Pad switch circuit | ||
| Stop light switch circuit | ||
| Automatic transaxle system | ||
| Vehicle stability control system | ||
| Millimeter wave radar sensor assembly | ||
| ECM | ||
| Vehicle speed setting cannot be performed (in vehicle-to-vehicle distance control mode) | Perform millimeter wave radar sensor assembly adjustment*1 | Click here |
| Fail-safe chart | ||
| Forward recognition camera is temporarily unavailable | ||
| Millimeter wave radar sensor is dirty | ||
| Millimeter wave radar sensor assembly beam axis not adjusted | ||
| CAN communication system | ||
| Steering Pad switch circuit | ||
| Automatic transaxle system | ||
| Millimeter wave radar sensor assembly | ||
| Forward recognition camera | ||
| Vehicle stability control system | ||
| Combination meter assembly | ||
| ECM | ||
| Control of vehicle speed by the dynamic radar cruise control system is canceled (in constant speed control mode) | Fail-safe chart | |
| CAN communication system | ||
| Steering Pad switch circuit | ||
| Stop light switch circuit | ||
| Automatic transaxle system | ||
| Vehicle stability control system | ||
| Millimeter wave radar sensor assembly | ||
| ECM | ||
| Control of vehicle speed by the dynamic radar cruise control system is canceled (in vehicle-to-vehicle distance control mode) | Perform millimeter wave radar sensor assembly adjustment*1 | Click here |
| Fail-safe chart | ||
| Forward recognition camera is temporarily unavailable | ||
| Millimeter wave radar sensor is dirty | ||
| Millimeter wave radar sensor assembly beam axis not adjusted | ||
| CAN communication system | ||
| Steering Pad switch circuit | ||
| Automatic transaxle system | ||
| Millimeter wave radar sensor assembly | ||
| Forward recognition camera | ||
| Vehicle stability control system | ||
| Combination meter assembly | ||
| ECM | ||
| Hunting/vehicle speed is not constant (in constant speed control mode) | CAN communication system | |
| Vehicle stability control system | ||
| ECM | ||
| Hunting/vehicle speed is not constant (in vehicle-to-vehicle distance control mode) | Millimeter wave radar sensor assembly is dirty | |
| Millimeter wave radar sensor assembly beam axis not adjusted | ||
| CAN communication system | ||
| Vehicle stability control system | ||
| Millimeter wave radar sensor assembly | ||
| ECM | ||
| Vehicle speed control by the cruise control system is not canceled when the CANCEL switch is pushed | Steering Pad switch circuit | |
| ECM | ||
| Moving the shift lever does not cancel control of vehicle speed by the dynamic radar cruise control system | Park/neutral position switch assembly | |
| Shift lock control unit assembly | ||
| Automatic transaxle system | ||
| ECM | ||
| Vehicle speed control by the cruise control system is not canceled when a shift paddle switch is operated*2 | Automatic transaxle system | |
| Shift paddle switch circuit | ||
| ECM | ||
| Depressing the brake pedal does not cancel control of vehicle speed by the dynamic radar cruise control system | Stop light switch circuit | |
| ECM | ||
| Control cannot be canceled while the vehicle is stopped | CAN communication system | |
| Vehicle stability control system | ||
| Front door courtesy switch circuit | ||
| Luggage compartment door courtesy switch circuit | ||
| Seat belt warning system | ||
| Theft deterrent system | ||
| ECM | ||
| Control cannot be canceled by operating the parking brake | CAN communication system | |
| Vehicle stability control system | ||
| Electric parking brake system | ||
| Brake actuator assembly (for LHD) | ||
| Brake actuator assembly (for RHD) | ||
| Millimeter wave radar sensor assembly | ||
| ECM | ||
| Even though the millimeter wave radar sensor assembly is not dirty, the warning message "Clean Sensor" is displayed | Millimeter wave radar sensor assembly | |
| The vehicle approach warning buzzer does not sound | Combination meter assembly | |
| Check millimeter wave radar sensor assembly installation position | ||
| Check installation of forward recognition camera | ||
| Forward recognition camera | ||
| Millimeter wave radar sensor assembly | ||
| Even though the vehicle approach warning buzzer is sounding, brake control is not performed to decelerate the vehicle | Vehicle stability control system | |
| CAN communication system | ||
| Millimeter wave radar sensor assembly | ||
| ECM | ||
| Even though the SET function is operating, the cruise SET indicator does not illuminate | CAN communication system | |
| Cruise SET indicator light circuit | ||
| Combination meter assembly | ||
| ECM | ||
| The cruise control indicator remains illuminated | CAN communication system | |
| Cruise main indicator light circuit | ||
| Combination meter assembly | ||
| ECM | ||
| Indicators are not displayed on the multi-information display in the combination meter assembly | CAN communication system | |
| Combination meter assembly | ||
| ECM | ||
| A buzzer does not sound when control of vehicle speed by the dynamic radar cruise control is canceled | CAN communication system | |
| Combination meter assembly | ||
| ECM |
*1: If error code 7 is output during beam axis alignment, clear the DTCs and perform beam axis alignment again.
*2: w/ Shift Paddle Switch