Park Assist/monitoring: Other Lexus LS IV

PRECAUTION

1. NOTICE FOR INITIALIZATION NOTE: When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the cable is reconnected. INITIALIZATION SYSTEM REFERENCE System Name See procedure Navigation System (for DVD) «INITIALIZATION»(ref-349706-S07943075812009120800000) Advanced Parking Guidance System Power Trunk Lid System Rear Door Sunshade System
2. PRECAUTIONS FOR INTUITIVE PARKING ASSIST SYSTEM Under the following conditions, the detection function may not function properly: 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. 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. Another vehicle's horn, motorcycle engine sounds, a large vehicle's air brake sound, another vehicle's sonar or other things that transmit ultrasonic waves 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.

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COMMUNICATION REFERENCE CHART

CUSTOMIZE PARAMETERS

1. CUSTOMIZE PARAMETERS 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. 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 SETTING REFERENCE CHART Display Default Contents Setting Fr Sensor Onset Range Wide Function to set buzzer activation range (for front sensors) Narrow or Wide Rr Sensor Onset Range Wide Function to set buzzer activation range (for rear sensors) Narrow or Wide Keep Sense Buzzer Avail Function to make buzzer sound when distance between vehicle and obstacle does not change for more than 3 seconds Not Avail or Avail Fr & Rr Buzzer Freq Middle Buzzer sounding frequency Low, Middle or High Fr & Rr Buzzer Volume M2 Buzzer volume setting L, M1, M2, M3 or H Sensor SENSOR SETTING REFERENCE CHART Display Default Contents Setting Sensor Condition N Avail Function to make sensors available when shift position is N Not Avail or Avail Front Side Dist Sensor Long Function to set buzzer activation range (for front sensors) Short or Long Reverse Range Front Sensor Fsde Operation setting for vehicle front sensors (front center, front corner, front side) when shift lever is in R position F, Fs, Fc, Fsde or F Stop Non P/R Range Rear Sensor R Stop Operation setting for vehicle rear sensors (rear center, rear corner) when shift lever is in position other than P or R R, Rcrn or R Stop Display DISPLAY SETTING REFERENCE CHART Display Default Contents Setting Approach Display OFF Avail Display when moving away from previously detected obstacle Not Avail or Avail Display Mode All Display mode setting (when intuitive parking assist system is normal) All or Undisp

1. NOTICE FOR INITIALIZATION NOTE: When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the cable is reconnected. INITIALIZATION SYSTEM REFERENCE CHART System Name See procedure Navigation System (for DVD) «INITIALIZATION»(ref-349706-S07943075812009120800000) Advanced Parking Guidance System Power Trunk Lid System Rear Door Sunshade System
2. VEHICLE ADJUSTMENT PRECAUTION The maximum steering angle memorize must be performed with the engine started. To make sure the vehicle does not move during the initialization, depress and hold the brake pedal, set the shift lever to the P position and set the parking brake. When performing vehicle adjustments, follow the precautions below. If the cable has been disconnected from the negative (-) battery terminal, the multi-display displays "system initializing", and the steering angle neutral point must be corrected. If the parking assist ECU is replaced, the multi-display displays "System not ready", and all of the following must be performed: 1) maximum steering angle and steering angle neutral point initialization; 2) camera position setting; 3) bumper reference line position adjustment; and 4) vehicle height setting. If the rear bumper cover is replaced and the rear bumper cover installation position is different, the bumper reference line position adjustment is necessary. If the television camera is replaced and the television camera assembly installation position is different, the camera position setting is necessary. If water, snow or mud has contaminated the television camera assembly lens, the display will not be clear. Using water and a soft cloth, clean the lens. If the contamination is severe, use a mild detergent.

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Communication table

COMMUNICATION REFERENCE CHART

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1. GENERAL The parking assist ECU uses vehicle condition signals from the steering angle sensor, power steering ECU, skid control ECU, ECM, etc. to make calculations and estimates. These results are used to make various guidelines, which are combined together with video from the television camera, and output to the multi-display. Also, control signals are output to each ECU and the advanced parking guidance system's various controls are performed. This system has a television camera to display the rear view of the vehicle on the multi-display. The display panel also shows a composite view consisting of the rear view and parking guidelines to assist the driver with parking the vehicle. This system is equipped with a self-diagnosis system, which is operated on a designated window that appears on the display panel, just as in the navigation system.
2. FUNCTION OF COMPONENTS The parking assist ECU controls the system by using information from the following components. FUNCTION CHART Components Function Television Camera Mounted on the luggage compartment door to transmit the rear view of the vehicle to the parking assist ECU. A color video camera that uses a CCD (Charge Coupled Device) and a wide-angle lens. Parking Assist ECU Receives vehicle condition signals from various ECUs, makes frame based on calculations, combines the frame with video from the television camera, and outputs the video with frame to the multi-display. Also, control signals are output to each ECU and the advanced parking guidance system's various controls are performed. Multi-display Receives video signals containing a composite of the rear view of the vehicle and the frame signals from the parking assist ECU, and displays them on the display panel. Display and navigation Uses the yaw rate detected by the gyro sensor that is built into the navigation ECU to transmit the movement of the vehicle to the parking assist ECU. Transmits the status of the language settings, which is selected by the language selector of the navigation screen display, to the parking assist ECU. Steering Angle Sensor Detects the angle of the steering wheel and sends the resulting signals to the parking assist ECU through CAN communication. ECM Transmits the shift position signal received from the park/neutral position switch to the parking assist ECU, via the CAN communication. Park/Neutral Position Switch Transmits a received shift position signal to the ECM. Skid Control ECU Sends stop switch, parking switch, vehicle speed, driving distance, and other vehicle condition signals to the parking assist ECU. Also receives advanced parking guidance failure signals and buzzer activation signals, and sounds the buzzer. Power Steering ECU Sends EPS failure, intervention steering, and other related vehicle condition signals to the parking assist ECU. Also, based on advanced parking guidance control signals and steering-related signals, performs steering control. Front Speaker RH Receives audio signals from the parking assist ECU, and outputs voice guidance according to the mode.
3. OPERATION EXPLANATION The ECM, through the CAN communication system, input the R position signal from the park/neutral position switch to the parking assist ECU when the shift lever is moved to the R position. After receiving the R position signal, the parking assist ECU switches the display signal for the multi-display from the navigation system to the advanced parking guidance system.
4. COMMUNICATION SYSTEM OUTLINE This advanced parking guidance system communicates between its components by AVC-LAN. Also, "PARALLEL PARKING ASSIST MODE" judges the vehicle angle data transmitted via AVC-LAN from the navigation ECU (the data is calculated by the navigation ECU by integrating the yaw rate of the gyro built into the navigation ECU). If a short circuit or open circuit occurs in the AVC-LAN circuit, communication is interrupted and the advanced parking guidance system will stop functioning.
5. DIAGNOSTIC FUNCTION OUTLINE This advanced parking guidance system has a diagnostic function (displayed on diagnosis menu on display).
6. MULTI-DISPLAY OUTLINE Touch switch Touch switches are touch-sensitive (interactive) switches operated by touching the screen. When a switch is pressed, the outer glass bends into contact the inner glass at the pressed position. By doing this, the voltage ratio is measured and the pressed position is detected.
7. AVC-LAN DESCRIPTION What is AVC-LAN? AVC-LAN, an abbreviation for "Audio Visual Communication Local Area Network", is a united standard developed by the manufacturers in affiliation with Toyota Motor Corporation. This standard pertains to audio and visual signals as well as switch and communication signals. Purpose: Recently, car audio systems have rapidly developed and the functions have vastly changed. The conventional car audio system is being integrated with multimedia interfaces similar to those in navigation systems. At the same time, customers are demanding higher quality from their audio systems. This is merely an overview of the standardization background. The specific purposes are as follows: To solve sound problems, etc. caused by using components of different manufacturers thorough signal standardization. To allow each manufacturer to concentrate on developing products they do best. From this, reasonably priced products can be produced. HINT: If a short +B or short to ground is detected in the AVC-LAN circuit, communication is interrupted and the audio system will stop functioning. The multi-display is the master unit.
8. NOTES FOR ADVANCED PARKING GUIDANCE Notes for advanced parking guidance. The advanced parking guidance may not function properly if subjected to a severe blow by any hard object. Do not "scrub" the cover part of the camera (resin made). Scrubbing it may scratch the cover and affect the image. Prevent organic solvents, waxes, bond removing solvents, or glass coating from adhering to the cover. Clean it off immediately, and wash with water. Exposing the camera to sudden temperature changes may affect proper function. A clear image may not appear if the camera is dirty with snow, mud, etc. In that case, wash with water and wipe off the water. Use a detergent to remove dirt if necessary. Images are difficult to discern even in normal conditions if: Camera screen is frosted over (the image immediately after turning the engine switch to the on position may be blurred or darker than normal). A strong beam of light, such as a sunbeam or headlight, hits the camera. HINT: When a strong light, such as a sunbeam reflected off a vehicle's body, hits the camera, the image may be blurred. This is called the "SMEAR" phenomenon, peculiar to the CCD camera. It is too dark around the camera (at night, etc.). The ambient temperature around the camera is either too high or too low.

INITIALIZATION

HINT

1. If the following operations are performed "SYSTEM INITIALIZING" is displayed on the multi-display. Also, when the expected course lines not displayed the parking guidelines are displayed, pressing the parking assist mode switch and parallel parking assist mode switch causes the message "! System cannot guide under current conditions." to be displayed.

INITIALIZATION SYSTEM REFERENCE CHART

1. Move the vehicle to a level area.
2. Perform either of the following initialization procedures.

1. Initialization with diagnosis system Start the diagnostic system (see «DTC CHECK/CLEAR»(ref-349762-S28214305832009120800000) ). Perform STEERING CENTER MEMORIZE and MAX STEERING ANGLE MEMORIZE on the STEERING ANGLE SETTING screen (see «CALIBRATION»(ref-349762-S21584540602009120800000) ). Finish the diagnostic system (see «DTC CHECK/CLEAR»(ref-349762-S28214305832009120800000) ).
2. Initialization with manual operation Turn the engine switch on (IG) or start the engine. Fully turn the steering wheel to the right.* Fully turn the steering wheel to the left.* HINT: *: These procedures can be performed as shown or in reverse.

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1. SYSTEM ADJUSTMENT If the following operations are performed, the adjustments shown below are required. SYSTEM ADJUSTMENT REFERENCE CHART Part name Operation Adjustment Item Television camera Replace Installation angle of television camera is deviated because of removal and installation of television camera, etc. Television camera optical axis (camera position setting) Parking assist ECU Replace Steering angle neutral point Store left and right maximum steering angle television camera optical axis (camera position setting) HINT: If the parking assist ECU is replaced, screen noise adjustment is automatically performed when steering angle setting and camera position setting are performed.
2. PREPARATION FOR ADJUSTMENT HINT: Only when adjusting the optical axis of the camera, set the target bar for adjustment. Park the vehicle with its wheels facing straight ahead and the steering wheel centered. Set the target bar for adjustment. HINT: Adjust the tire pressure to the specification. The target bar for adjustment is a piece of tape attached to the floor. Check the color on the screen and choose a tape color which can be easily seen. Before parking the vehicle, move the vehicle back and forth to check that the wheels are facing straight ahead and that the steering wheel is centered.
3. BOOT DIAGNOSIS MODE Start the engine. Start the diagnostic system (see «DTC CHECK/CLEAR»(ref-349762-S28214305832009120800000) ). Select "Camera Check" on the Diagnosis Menu.
4. SET VEHICLE HEIGHT At the "SIGNAL CHECK" screen, press "HT INIT" to display the "HEIGHT SET" screen. HINT: Before performing the camera position setting, the vehicle height setting must be performed in the "HEIGHT SET" screen. If the vehicle height setting is not completed, the "HT INIT" display will change to "CHECKING". Measure the distance A between the ground and television camera in the illustration. Calculate the difference between the distance A and the standard height below. Standard: 944 mm (37.2 in.) Press "UP" and "DOWN" to input the calculated difference. After inputting the calculated difference, press "OK". The vehicle height setting will be recorded. HINT: Press "OK" with the vehicle in the same condition as when the vehicle height was measured. If a person was in the driver's seat when the vehicle height was measured, press "OK" with the same person in the driver's seat. On the "SIGNAL CHECK" screen, check that the "HT INIT" display is "INPUT OK".
5. SET PARALLEL PARKING OFFSET Select "PARALLEL OFFSET" on the SIGNAL CHECK screen. Perform the parallel parking offset. Press the UP or DOWN switches to adjust.
6. SET VOLUME Select "VOLUME" on the SIGNAL CHECK screen. Select the volume level on the VOLUME screen.
7. SET CAMERA POSITION SETTING Select the "NEXT" button on the SIGNAL MENU screen. HINT: If DTC C1650 (5C-74) is output, pushing the "NEXT" button does not advance the screen to the CAMERA POSITION SETTING screen. Perform the roll angle adjustment. Press the directional switches to rotate the target adjustment bares. Perform the vertical and horizontal position adjustment. Press the directional switches to move the target adjustment boxes.
8. SET BUMPER POSITION Press the directional switches to move the target adjustment. If the right and left bumper need to be adjusted individually, press the "L/R" button on the BUMPER. Press the directional switches to move the target adjustment on the LEFT BUMPER and RIGHT BUMPER screen.
9. CHECK VERIFY MODE Check that A and the target adjustment bar are overlapping. If A and the target adjustment bar are not aligned even if the tires are aligned straight ahead, perform the CAMERA POSITION SETTING operation. Selecting "NEXT" will move to the STEERING ANGLE SETTING screen, and complete the adjustment. HINT: The update is not completed until the "NEXT" key is pressed.
10. SET STEERING ANGLE SETTING Perform the STEERING CENTER MEMORIZE operation. Check that the steering wheel is centered, and then press "STEERING CENTER MEMORIZE". HINT: When performing removal and installation, or replacement of the television camera, steering angle adjustment is not required. Press "OK" on the steering angle setting screen. However, the current steering angle is automatically stored as the steering angle neutral point when the steering angle setting screen is displayed. Make sure that the steering wheel is centered before changing the display to the steering angle setting screen. Even when storing the steering angle neutral point only, the system cannot store it unless the operation is completed by following the prompts from "NEXT" to "OK". Perform the MAX STEERING ANGLE MEMORIZE operation. After adjusting the steering angle neutral point, turn the steering wheel to the left and right lock positions and press "MAX STEERING ANGLE MEMORIZE". The maximum steering angle is then stored. HINT: The key "OK" does not respond until the system stores the steering angle neutral point and maximum steering angle.
11. FINISH DIAGNOSIS MODE Turn the engine switch off.

FAIL-SAFE CHART

If the parking assist ECU detects a malfunction, the fail-safe functions shown in the table below are activated.

FAIL-SAFE CHART

1. NOTICE FOR INITIALIZATION NOTE: When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the cable is reconnected. INITIALIZATION SYSTEM REFERENCE CHART System Name See procedure Navigation System (for DVD) Advanced Parking Guidance System «INITIALIZATION»(ref-349706-S07943075812009120800000) Power Trunk Lid System Rear Door Sunshade System

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Communication Table

COMMUNICATION REFERENCE CHART