PRECAUTION [01/2012 - ]
- PRECAUTION FOR INTUITIVE PARKING ASSIST SYSTEM HINT: In very cold weather where a malfunction display appears, the sensor may not detect obstacles. If the malfunction display appears, visually check the sensor first. If the sensor is free of foreign matter but the malfunction display remains, the sensor may have a malfunction. Under the following conditions, the detection function may not function properly: The sensor is covered with foreign matter, such as mud or snow (detection function returns to normal if sensor is cleaned). The sensor is frozen (detection function returns to normal when defrosted). A hand is blocking the sensor. The detection range may be affected by the following conditions: The sensor is covered with foreign matter, such as mud or snow. The vehicle is in a very hot or cold area. Under the following conditions, a detection error may occur: Driving on a bumpy road, on an unpaved road or in tall grass. Things that transmit ultrasonic waves, such as other vehicle horns or sonar systems, motorcycle engines, or large vehicle air brakes, are near the vehicle. It is raining heavily or water is sprayed on the sensor. The vehicle is extremely tilted. The vehicle is equipped with a commercial fender pole or a wireless mechanism antenna. The sensor is covered with foreign matter, such as mud or snow. The vehicle is moved forward or backward towards high curbs or objects that are perpendicular to the ground. The sensor cannot detect the following objects. Thin objects, such as wires and ropes. Materials that easily absorb ultrasonic waves, such as cotton, snow, etc. Objects with sharp edges. Short objects. Tall objects with a projected upper part. Other notices: The sensor cannot detect objects directly under the bumper (the sensor may detect low objects and thin poles, and then lose track of the objects). The sensor may be unable to detect obstacles that are too close to the sensor. The sensor may be unable to detect obstacles if it is dropped or subjected to a strong impact.
Scheme 72
Scheme 73
Scheme 74
| Sender ECU | Receiver ECU | Signal | Line |
|---|---|---|---|
| Combination Meter Assembly | Parking Assist ECU | Vehicle speed signal | CAN |
| ECM | Parking Assist ECU | Shift position signal | CAN |
| Air Conditioning Amplifier Assembly | Parking Assist ECU | Outside temperature | CAN |
| Main Body ECU (Cowl Side Junction Block LH) | Parking Assist ECU | Dimmer signal Destination signal Steering information | CAN |
| Windshield Wiper Switch Assembly | Parking Assist ECU | Wiper status signal | CAN |
| Parking Assist ECU | Combination Meter Multi-media module receiver assembly | Ultrasonic sensor detection signal | CAN |
COMMUNICATION TABLE
CUSTOMIZE PARAMETERS [01/2012 - ]
- CUSTOMIZE INTUITIVE PARKING ASSIST SYSTEM NOTE: When the customer requests a change in a function, first make sure that the function can be customized. Be sure to make a note of the current settings before customizing. When troubleshooting a function, first make sure that the function is set to the default setting. Customizing with the Techstream. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Customize Setting. Select the setting by referring to the table below. WARNING Display Default Contents Setting Rr Sensor Onset Range Wide Sets the buzzer activation range for the rear sensors. Narrow or Wide Keep Sense Buzzer Avail Makes the buzzer sound when the distance between the vehicle and obstacle does not change for more than 3 seconds. Not Avail or Avail Fr & Rr Buzzer Volume H Changes the buzzer volume setting. L, M1, M2, M3 or H SENSOR Display Default Contents Setting Sensor Condition N Avail Makes the sensors available when the shift lever is in N. Not Avail or Avail Reverse Range Front Sensor F Changes the operation setting for the vehicle front sensors when the shift lever is in R. F or F Stop Non P/R Range Rear Sensor R Stop Changes the operation setting for the vehicle rear sensors when the shift lever is not in P or R. R, Rcrn or R Stop DISPLAY Display Default Contents Setting Approach Display OFF Avail The display when moving away from a previously detected obstacle. Not Avail or Avail Display Mode All The display mode setting (when the LEXUS parking assist-sensor system is normal). All or Undisp Customizing with multi-display assembly. NOTE: When the customer requests a change in a function, first make sure that the function can be customized. Be sure to make a note of the current settings before customizing. When troubleshooting a function, first make sure that the function is set to the default setting. Turn the engine switch on (IG). Enter the following menus: Setup / Vehicle / LEXUS park assist. Select the setting by referring to the table below. WARNING Display Default Contents Setting Alert volume 3 Sets the buzzer activation range for the rear center sensors. 1, 2, 3, 4 or 5 Display On The display mode setting (when the LEXUS parking assist-sensor system is normal). On or Off Distance Wide Sets the buzzer activation range for the rear center sensors. Narrow or Wide