Lexus IS250 IS220d GSE20 ALE20 - PARK ASSIST / MONITORING
CLEARANCE SONAR SYSTEM - SYSTEM DESCRIPTION
| GENERAL |
This system uses ultrasonic sensors to detect any obstacles at the corners and the rear of the vehicle. The system then informs the driver of the distance between the sensors and the obstacles as well as their positions by indicating them on the multi-display or multi-information display and by sounding a buzzer.
| FUNCTION OF COMPONENTS |
| Components | Function |
| Ultrasonic sensor (6) | Detects the distance between the vehicle and the obstacle |
| Clearance warning buzzer | Sounds the buzzer to inform the driver according to the distance to the obstacle |
| Multi-information Display on the Combination Meter | Displays the location of the obstacle and the approximate distance between the vehicle and the obstacle Displays a malfunction or freezing of the ultrasonic sensor to inform the driver The multi-information display is switched to the multi-switch mode by the satellite switch operation. Then, LEXUS parking assist-sensor ON/OFF condition will be displayed |
| LEXUS Parking Assist-Sensor Indicator Light on the Combination Meter | Illuminates to inform the driver when the system operation conditions are met |
| Satellite Switch | Operating this switch enables disenables, or cuts off the operation of LEXUS parking assist-sensor |
| Multi-display | Displays the location of the obstacle and the approximate distance between the vehicle and the obstacle The sound volume and sounding distance of the buzzer and display requirement distance can be set on the setup screen for the LEXUS parking assist-sensor |
| Clearance Warning ECU | Judges the approximate distance between the vehicle and the obstacle based on the signals from the ultrasonic sensors and sends it to the multi-information display and multi-display Sounds the buzzer |
| Body ECU (LH) | Transmits the reverse signal to the clearance warning ECU |
| Body ECU (RH) | Transmits the parking brake switch signal to the clearance warning ECU |
| ECM | Transmits the shift position signal to the clearance warning ECU |
| OPERATION EXPLANATION |
The operating condition of each LEXUS parking assist-sensor differs according to the installation position as shown in the table bellow.
| Installation Position | Operating Condition |
| Front Corner Sensor | Engine switch ON (IG) Satellite switch is ON Shift position is except P (A/T) Parking brake is not applied (M/T) Vehicle speed is approx. 6 km/h (10 km/h) or less |
| Rear Corner Sensor | Engine switch ON (IG) Satellite switch is ON Shift position is R (A/T) Buck-up light switch in ON (M/T) Vehicle speed is approx. 6 km/h (10 km/h) or less |
| Rear Center Sensor | Engine switch ON (IG) Satellite switch is ON Shift position is R (A/T) Buck-up light switch in ON (M/T) Vehicle speed is approx. 6 km/h (10 km/h) or less |
The LEXUS parking assist-sensor then informs the driver of the distance between the sensors and the obstacles as well as their positions by displaying them on the multi-information display in the combination meter or multi-display and by sounding buzzer.
LEXUS IS250, IS220d / GSE20 ALE20