Lexus ES: Precaution
PRECAUTION
NOTICE:
When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the terminal is reconnected.
| System Name | See Procedure |
|---|---|
| Lane Control System | |
| Pre-collision System | |
| Intelligent Clearance Sonar System | |
| Parking Assist Monitor System | |
| Panoramic View Monitor System | |
| Lighting System (w/ Automatic Headlight Beam Level Control System) | |
| Power Door Lock Control System | |
| Power Back Door System (w/ Outside Door Control Switch) |
PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL
SERVICE MODE
NOTICE:
-
Before servicing, enter service mode to restrain telematics communication functions and prevent the following while servicing:
- Remote door lock and unlock operations
- Remote power start and stop operations
- Warning notification function operations
- Service mode can be entered by using the Techstream or operating the radio receiver assembly.
HINT:
When a warning is generated due to a vehicle malfunction, the DCM (Telematics Transceiver) receives warning information from the combination meter assembly and sends a warning notification to the service center.
(a) Service mode
(1) Enter service mode (Method 1)
- Turn the engine switch off.
- Connect the Techstream to the DLC3.
- Start the engine.
- Turn the Techstream on.
- Enter the following menus: Body Electrical / Telematics
(2) Enter service mode (Method 2)
-
w/ Navigation System:
Enter diagnostic mode of navigation system.
Click here
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-
w/o Navigation System:
Enter diagnostic mode of audio and visual system.
Click here
HINT:
Use the Techstream to cancel communication function pausing mode (Service Mode).
Click here
PRECAUTION FOR TELEMATICS SYSTEM
(a) If replacing any of the following parts, refer to Initialization.
Click here
NOTICE:
If registration is not performed after replacing any of the following parts, the remote door lock and unlock and remote engine start and stop will not be available.
(1) Certification ECU (smart key ECU assembly)
(2) DCM (telematics transceiver)
(3) Main body ECU (multiplex network body ECU)
PRECAUTION FOR ACTIVATION
(a) When replacing the DCM (Telematics Transceiver), perform DCM activation.
Click here
PRECAUTION FOR TROUBLESHOOTING REMOTE SERVICE FUNCTION
(a) When troubleshooting symptoms such as when part of the remote service function does not operate normally, first check that there are no third party parts connected to the DLC3. If any such parts are connected to the DLC3, some parts of the remote service function may not operate normally.
Therefore, explain the situation to the customer, remove the parts and turn the engine switch off and on (IG) before proceeding with troubleshooting.
READ NEXT:
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT:
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
Remote Engine Starter does not Operate
WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Before replacing the DCM (telematics transceiver), refer to Registration. Click here PROCEDURE 1. CHECK SMART KEY SYSTEM (for Start Function)
Remote Service Malfunction
PROCEDURE 1. CHECK CAN COMMUNICATION SYSTEM (a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Bus Check. C
SEE MORE:
Steering Pad Switch Circuit
DESCRIPTION
The steering pad switch assembly outputs the dynamic cruise control on/off signal and various control signals to the ECM.
The ECM controls the dynamic cruise control system according to the signals received from the steering pad switch assembly.
WIRING DIAGRAM CAUTION / NOTICE /
Engine Failed to Start Mechanical Linkage Failure (P1C7779)
DTC SUMMARY MALFUNCTION DESCRIPTION This DTC is stored when the hybrid vehicle control ECU determines that the hybrid vehicle transaxle assembly has seized or that there is the hybrid vehicle transaxle assembly malfunction in the drivetrain. The cause of this malfunction may be one of the following:
