Lexus RX (RX 350L, RX450h) 2016-2022 Repair Manual: Precaution

PRECAUTION

PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL

NOTICE:

When disconnecting the cable from the negative (-) auxiliary 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)

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.
  • Service mode can be entered by using the Techstream or operating the remote touch.

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)

  1. Turn the engine switch off.
  2. Connect the Techstream to the DLC3.
  3. Start the engine.
  4. Turn the Techstream on.
  5. Enter the following menus: Body Electrical / Telematics

(2) Enter service mode (Method 2)

  • w/ Navigation System:

    Enter diagnostic mode of navigation system.

    Click here

  • w/o Navigation System:

    Enter diagnostic mode of audio and visual system.

    for 12.3 Inch Display: Click here

    for 8 Inch Display: 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.

    Telematics System
    ...

    Parts Location
    PARTS LOCATION ILLUSTRATION *1 TELEPHONE AND GPS ANTENNA (for Roof Side) - GPS - Telephone Main *2 MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) *3 AIR CONDITIONING AMPLIFIER ASSEMBLY * ...

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    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual

    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual

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