Note
When replacing the combination meter assembly, make sure to replace it with a new one.
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 |
|---|---|---|
| System does not operate at all | LEXUS Parking Assist-sensor System*1 | |
| CAN communication system | ||
| Steering pad switch assembly | ||
| Spiral with sensor cable sub-assembly | ||
| Clearance warning ECU assembly*2 | Click here | |
| Clearance warning ECU assembly*3 | Click here |
*1: w/ Intelligent Clearance Sonar System
*2: for LHD
*3: for RHD
| Symptom | Suspected Area | Link |
|---|---|---|
| Detection function operates when the operating conditions are not met | SFI system*1 | |
| SFI system*2 | ||
| Clearance warning ECU assembly*3 | ||
| Clearance warning ECU assembly*4 | ||
| Detection function operates when vehicle is not within the required speed range (speedometer not malfunctioning) | Clearance warning ECU assembly*3 | |
| Clearance warning ECU assembly*4 |
*1: w/ Canister Pump Module
*2: w/o Canister Pump Module
*3: for LHD
*4: for RHD
| Symptom | Suspected Area | Link |
|---|---|---|
| Intelligent clearance sonar system is normal but buzzer operation is intermittent | Check that the temporary mute function is not operating | - |
| Proceed to "Clearance Warning Buzzer Circuit" | ||
| Clearance warning ECU assembly*1 | ||
| Clearance warning ECU assembly*2 | ||
| Combination meter assembly |
*1: for LHD
*2: for RHD
| Symptom | Suspected Area | Link |
|---|---|---|
| While the ICS system is operating, no ICS notifications are displayed on the multi-information display. | CAN communication system | |
| Clearance warning ECU assembly*1 | ||
| Clearance warning ECU assembly*2 | ||
| Combination meter assembly | ||
| While the ICS system is operating, no ICS notifications are displayed on the headup display.*3 | CAN communication system | |
| Clearance warning ECU assembly*1 | ||
| Clearance warning ECU assembly*2 | ||
| Meter mirror sub-assembly | ||
| "Parking Support Brake Malfunction Visit Your Dealer" is displayed | Combination meter assembly | |
| Clearance warning ECU assembly | ||
| "Parking Support Brake Unavailable" is displayed | Check that no foreign matter is attached to the ultrasonic sensors. | - |
| Steering angle neutral point (Intelligent clearance sonar system registration) | ||
| CAN communication system | ||
| Combination meter assembly | ||
| Clearance warning ECU assembly*1 | ||
| Clearance warning ECU assembly*2 | ||
| ICS does not operate when there is a possibility of a collision (Warning message "Parking Support Brake Unavailable" not displayed) | Check the installation of the ultrasonic sensors (front) | |
| Check the installation of the ultrasonic sensors (rear) | ||
| Adjust the installation of the ultrasonic sensors as necessary. | ||
| Ultrasonic sensors (front) | ||
| Ultrasonic sensors (rear) | ||
| Clearance warning ECU assembly*1 | ||
| Clearance warning ECU assembly*2 | ||
| ICS control operates when there is no possibility of a collision | Check the installation of the ultrasonic sensors (front) | |
| Check the installation of the ultrasonic sensors (rear) | ||
| Adjust the installation of the ultrasonic sensors as necessary. | ||
| Ultrasonic sensors (front) | ||
| Ultrasonic sensors (rear) | ||
| Clearance warning ECU assembly*1 | ||
| Clearance warning ECU assembly*2 | ||
| ICS control cannot be turned off (ICS OFF indicator does not illuminate) | CAN communication system | |
| Combination meter assembly (LED): Perform Active Test (Indicat. ICS OFF LCD) | ||
| Steering pad switch assembly | ||
| Spiral with sensor cable sub-assembly | ||
| Clearance warning ECU assembly*1 | ||
| Clearance warning ECU assembly*2 | ||
| ICS OFF indicator blinks | If "Yes" is displayed for the Data List item "BSM Radar Communication Invalid History", the blind spot monitor system may be malfunctioning. | |
| Check that no foreign matter is attached to the ultrasonic sensors. | - | |
| Steering angle neutral point (Intelligent clearance sonar system registration) | ||
| Combination meter assembly | ||
| Clearance warning ECU assembly*1 | ||
| Clearance warning ECU assembly*2 |
*1: for LHD
*2: for RHD
*3: w/ Headup Display