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.
Note
When replacing parts, make sure to check the replacement precautions Click here.
| Symptom | Suspected Area | See page |
|---|---|---|
| The dynamic radar cruise control system cannot be turned on using the cruise control main switch (ON/OFF) | CAN communication system (for LHD) | |
| CAN communication system (for RHD) | ||
| Cruise control switch circuit | ||
| Cruise main indicator light circuit | ||
| Combination meter assembly | ||
| Driving support ECU assembly | ||
| The cruise control mode cannot be changed between vehicle-to-vehicle distance control mode and constant speed control mode | CAN communication system (for LHD) | |
| CAN communication system (for RHD) | ||
| Combination meter assembly | ||
| Driving support ECU assembly | ||
| The vehicle-to-vehicle distance cannot be changed | CAN communication system (for LHD) | |
| CAN communication system (for RHD) | ||
| Distance control switch circuit | ||
| Combination meter assembly | ||
| Driving support ECU assembly | ||
| Vehicle speed setting cannot be performed (in constant speed control mode) | Fail-safe chart | |
| CAN communication system (for LHD) | ||
| CAN communication system (for RHD) | ||
| Cruise control switch circuit | ||
| Stop light switch circuit | ||
| Hybrid control system (for 2AR-FSE) | ||
| Hybrid control system (for 2GR-FXE) | ||
| Electronically controlled brake system | ||
| Power management control ECU | ||
| VSC OFF switch (integration control and panel assembly) | ||
| Driving support ECU assembly | ||
| Vehicle speed setting cannot be performed (in vehicle-to-vehicle distance control mode) | Fail-safe chart | |
| CAN communication system (for LHD) | ||
| CAN communication system (for RHD) | ||
| Millimeter wave radar sensor is dirty | - | |
| Millimeter wave radar sensor assembly beam axis not adjusted | ||
| Cruise control switch circuit | ||
| Hybrid control system (for 2AR-FSE) | ||
| Hybrid control system (for 2GR-FXE) | ||
| Millimeter wave radar sensor assembly | ||
| Forward recognition camera | ||
| Electronically controlled brake system | ||
| Combination meter assembly | ||
| Power management control ECU | ||
| VSC OFF switch (integration control and panel assembly) | ||
| Driving support ECU assembly | ||
| Control of vehicle speed by the dynamic radar cruise control system is canceled (in constant speed control mode) | Fail-safe chart | |
| CAN communication system (for LHD) | ||
| CAN communication system (for RHD) | ||
| Cruise control switch circuit | ||
| Stop light switch circuit | ||
| Hybrid control system (for 2AR-FSE) | ||
| Hybrid control system (for 2GR-FXE) | ||
| Electronically controlled brake system | ||
| Power management control ECU | ||
| VSC OFF switch (integration control and panel assembly) | ||
| Driving support ECU assembly | ||
| Control of vehicle speed by the dynamic radar cruise control system is canceled (in vehicle-to-vehicle distance control mode) | Fail-safe chart | |
| CAN communication system (for LHD) | ||
| CAN communication system (for RHD) | ||
| Forward recognition camera is temporarily unavailable | ||
| Millimeter wave radar sensor is dirty | - | |
| Millimeter wave radar sensor assembly beam axis not adjusted | ||
| Cruise control switch circuit | ||
| Hybrid control system (for 2AR-FSE) | ||
| Hybrid control system (for 2GR-FXE) | ||
| Millimeter wave radar sensor assembly | ||
| Forward recognition camera | ||
| Electronically controlled brake system | ||
| Combination meter assembly | ||
| Power management control ECU | ||
| VSC OFF switch (integration control and panel assembly) | ||
| Driving support ECU assembly | ||
| Hunting/vehicle speed is not constant (in constant speed control mode) | CAN communication system (for LHD) | |
| CAN communication system (for RHD) | ||
| Electronically controlled brake system | ||
| Power management control ECU | ||
| Hunting/vehicle speed is not constant (in vehicle-to-vehicle distance control mode) | Millimeter wave radar sensor is dirty | - |
| Millimeter wave radar sensor assembly beam axis not adjusted | ||
| CAN communication system (for LHD) | ||
| CAN communication system (for RHD) | ||
| Electronically controlled brake system | ||
| Power management control ECU | ||
| Driving support ECU assembly | ||
| Pulling the cruise control main switch to CANCEL does not cancel control of vehicle speed by the dynamic radar cruise control system | Cruise control switch circuit | |
| Driving support ECU assembly | ||
| Moving the shift lever does not cancel control of vehicle speed by the dynamic radar cruise control system | Shift lever position sensor (for L110) | |
| Shift lever position sensor (for L210) | ||
| Transmission floor shift assembly (for L110) | ||
| Transmission floor shift assembly (for L210) | ||
| Hybrid control system (for 2AR-FSE) | ||
| Hybrid control system (for 2GR-FXE) | ||
| Driving support ECU assembly | ||
| Depressing the brake pedal does not cancel control of vehicle speed by the dynamic radar cruise control system | Stop light switch circuit | |
| Driving support ECU assembly | ||
| Control cannot be canceled while the vehicle is stopped (w/ Full-speed Following Function) | Fail-safe chart | |
| Seat belt warning system | ||
| Theft deterrent system | ||
| Door courtesy switch circuit | ||
| Skid control ECU assembly | ||
| Driving support ECU assembly | ||
| Even though the electric parking brake is operating, control cannot be canceled (w/ Full-speed Following Function) | CAN communication system (for LHD) | |
| CAN communication system (for RHD) | ||
| Parking brake ECU assembly | ||
| Driving support ECU assembly | ||
| Even though the millimeter wave radar sensor is not dirty, the warning message "Clean Sensor" is displayed | Millimeter wave radar sensor assembly | |
| The vehicle approach warning buzzer does not sound | Skid control buzzer assembly circuit | |
| Check installation of millimeter wave radar sensor | ||
| Check installation of forward recognition camera | ||
| Forward recognition camera | ||
| Millimeter wave radar sensor assembly | ||
| Driving support ECU assembly | ||
| Even though the vehicle approach warning buzzer is sounding, brake control is not performed when decelerating | Electronically controlled brake system | |
| CAN communication system (for LHD) | ||
| CAN communication system (for RHD) | ||
| Driving support ECU assembly | ||
| Power management control ECU | ||
| Even though the SET function is operating, the cruise control SET indicator does not illuminate | CAN communication system (for LHD) | |
| CAN communication system (for RHD) | ||
| Cruise SET indicator light circuit | ||
| Combination meter assembly | ||
| Driving support ECU assembly | ||
| The cruise control indicator remains illuminated | CAN communication system (for LHD) | |
| CAN communication system (for RHD) | ||
| Combination meter assembly | ||
| Driving support ECU assembly | ||
| Indicators are not illuminated on the multi-information display in the combination meter assembly | CAN communication system (for LHD) | |
| CAN communication system (for RHD) | ||
| Driving support ECU assembly | ||
| The buzzer does not sound when control of vehicle speed by the dynamic radar cruise control is canceled | CAN communication system (for LHD) | |
| CAN communication system (for RHD) | ||
| Driving support ECU assembly | ||
| Vehicle speed control by the cruise control system is not canceled when the paddle shift switch is operated | Shift paddle switch circuit (for 2AR-FSE) | |
| Shift paddle switch circuit (for 2GR-FXE) | ||
| Driving support ECU assembly |