Lexus GX470 2008 - User Manual

L-SB-0013-08
March17,2008
RearSeatEntertainmentSystemBlankScreen
Service
CategoryAudio/Visual/Telematics
SectionAudio/VideoMarketUSA
Applicability
YEAR(S)MODEL(S)ADDITIONALINFORMATION
2007–2008
GX470,RX350,
RX400H
Introduction
Onvehiclesequippedwiththenewfactory9-inchrearseatDVDvideoscreen,theRearSeat
Entertainment(RSE)LockfunctionmaycausetheDVDscreentobeblankifthisfunctionisturned
on.Additionally,aDVDcannotbeinsertedorejectedfromthesystemwhentherearlockisturned
on.UsethefollowingproceduretounlocktheRearSeatEntertainment.
WarrantyInformation
OPCODEDESCRIPTION
TIME
OFP
T1T2
N/ANotApplicabletoWarranty
––––
RepairProcedure
1.Confirmthecustomer’scomplaintofDVDRSEsysteminoperative.
2.ForvehicleswithLexusNavigationSystem,performthefollowingproceduretoturnOFFthe
RSELockfunction:
A.PresstheINFObuttontodisplaythe“Information”screenonthenavigationunit.
B.Pressthe“ScreenSetting”touchbuttononthenavigationdisplay.
C.Underthe“RearLock”option,pressthe“OFF”touchbuttonandthenpress“OK”inthe
upperrightpartofthedisplay.
D.PresstheDVDswitchontheRSEsystem,(IfaDVDisNOTalreadyintheplayer,insertone)
andconfirmscreenis“ON”andthesystemwillplayDVD’s.
©2008Lexus,adivisionofToyotaMotorSales,USA
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Summary

Rear Seat Entertainment System Blank Screen

Introduction

Explains that the RSE Lock function may cause the DVD screen to be blank.

Repair Procedure

Provides steps to resolve the blank screen issue for the RSE system.

Procedure for Vehicles with Lexus Navigation System

Steps to turn OFF the RSE Lock function using the navigation unit.

Procedure for Vehicles without Lexus Navigation System

Steps to turn OFF the RSE Lock function using the audio control knob.

RSE Diagnosis

Procedure for RSE diagnosis if the above steps do not resolve the concern.

Overview

1. Function Description
2. Important Technical Specifications
3. Usage Features
4. Maintenance Features

This document, L-SB-0013-08, issued on March 17, 2008, by Lexus, a division of Toyota Motor Sales, USA, addresses a specific technical issue related to the Rear Seat Entertainment (RSE) System, specifically a "Blank Screen" condition. It is categorized under Audio/Visual/Telematics services, with a focus on Audio/Video sections. The bulletin is applicable to the USA market and covers 2007-2008 model year Lexus GX470, RX350, and RX400H vehicles. The primary function of the RSE system is to provide entertainment, specifically DVD video playback, to rear seat passengers.

Function Description:

The Rear Seat Entertainment (RSE) System in question is a factory-installed 9-inch DVD video screen designed for rear seat passengers. Its core function is to play DVDs, providing audio and visual entertainment. A key feature of this system is the "RSE Lock" function, which, when activated, can prevent the DVD screen from displaying content (resulting in a blank screen) and also restrict the insertion or ejection of DVDs from the player. The bulletin details procedures to manage and resolve issues arising from this lock function.

Important Technical Specifications:

While the document doesn't delve into deep technical specifications like screen resolution, power consumption, or specific DVD formats supported, it highlights the following:

• Screen Size: 9-inch. This indicates a relatively large display for rear seat entertainment, enhancing the viewing experience for passengers.
• Vehicle Compatibility: Specifically designed for 2007-2008 Lexus GX470, RX350, and RX400H models. This implies integration with the vehicle's electrical and communication systems.
• Lock Functionality: The "RSE Lock" is a critical technical feature. Its purpose is likely to allow parents or drivers to control access to the RSE system, perhaps for safety reasons or to manage content viewing by children. The technical implication is that this lock function directly interfaces with the display and DVD drive mechanisms, overriding their normal operation when active.
• Integration with Navigation System: The RSE system's control interface differs based on whether the vehicle is equipped with a Lexus Navigation System. This suggests two distinct control architectures for the RSE, one integrated with the navigation unit's touchscreen interface and another relying on physical controls (e.g., audio control knob) for vehicles without navigation.

Usage Features:

The document primarily focuses on troubleshooting and managing the "RSE Lock" function, which is a significant usage feature.

• DVD Playback: The fundamental usage is playing DVDs for rear seat entertainment.
• RSE Lock Control (with Navigation System):
  • Access via the "INFO" button on the navigation unit.
  • Navigate to the "Information" screen.
  • Select the "Screen Setting" touch button.
  • Locate the "Rear Lock" option.
  • Press the "OFF" touch button to disable the lock.
  • Confirm by pressing "OK" in the upper right part of the display.
  • This method provides a clear, menu-driven interface for managing the lock.
• RSE Lock Control (without Navigation System):
  • Utilize the audio control knob.
  • Push the knob multiple times to cycle through various options (e.g., Bass, Mid, Treble) until "Rear Lock" is displayed on the screen.
  • Turn the audio control knob to change the display next to "REAR LOCK" to "OFF".
  • This method relies on a more tactile, sequential control scheme, common in audio systems without a central touchscreen.
• Confirmation of Operation: After disabling the lock, users are instructed to press the DVD switch on the RSE system and, if necessary, insert a DVD to confirm that the screen is "ON" and the system plays DVDs. This is a crucial step for verifying the resolution of the blank screen issue.
• Owner's Manual Reference: The bulletin notes that the system operation, including the RSE Lock function, is described in the "Audio/Video" section of the vehicle owner's manual. This indicates that the feature is a standard, documented part of the vehicle's functionality.

Maintenance Features:

The document outlines a specific maintenance procedure for addressing the "Blank Screen" issue, which can be considered a diagnostic and corrective maintenance feature.

• Problem Confirmation: The first step is to "Confirm the customer's complaint of DVD RSE system inoperative." This emphasizes a diagnostic approach.
• Troubleshooting Steps: The detailed procedures for turning OFF the RSE Lock function, depending on the vehicle's navigation system, are the core maintenance steps. These are designed to be performed by service technicians but are clear enough for an informed user to follow.
• Customer Education: If the procedure resolves the issue, technicians are instructed to "explain the system operation to the customer." This is a proactive maintenance step to prevent future occurrences of the same issue due to misunderstanding of the RSE Lock function.
• Escalation for Unresolved Issues: If the outlined procedure does NOT resolve the concern, technicians are directed to "perform RSE diagnosis using the Technical Information System (TIS), 2007–2008 model year applicable vehicle repair manual." This indicates a structured diagnostic pathway, suggesting that the blank screen could stem from other, more complex issues beyond the RSE Lock. This highlights a tiered maintenance approach, starting with simple user-correctable issues and escalating to more in-depth technical diagnostics.
• Warranty Information: The "Warranty Information" section states "Not Applicable to Warranty" for the described procedure. This implies that resolving the blank screen issue by simply turning off the RSE Lock is considered a user-operable function rather than a defect requiring warranty repair. The "OP CODE" and "DESCRIPTION" fields are left as "N/A" and "Not Applicable to Warranty," respectively, further reinforcing this point.

In summary, the Lexus Rear Seat Entertainment System is a DVD-based video playback unit for rear passengers, featuring a 9-inch screen. Its primary operational challenge, as highlighted by this bulletin, is the "RSE Lock" function, which can inadvertently cause a blank screen and prevent DVD access. Control of this lock varies based on the presence of a navigation system, utilizing either a touchscreen interface or the audio control knob. Maintenance primarily involves a diagnostic procedure to disable this lock, with further technical diagnosis required if the issue persists. The bulletin underscores the importance of customer education regarding this specific feature.

Lexus GX470 2008 Specifications