Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual: Precaution

PRECAUTION

PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL

NOTICE:

When disconnecting the cable from the negative (-) battery terminal, initialize the following system(s) after the cable is reconnected:

System

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)

PRECAUTIONS WHEN CHECKING FOR DTCS

(a) When the cable is disconnected from the negative (-) battery terminal, the DTCs stored in the steering lock ECU (steering lock actuator or upper bracket assembly) are cleared. Be sure to record any output DTCs immediately.

(b) Normally, with the engine switch off, even if the Techstream is connected to the vehicle, the information stored in the smart access system related ECUs (the certification ECU (smart key ECU assembly), main body ECU, etc.) cannot be read. However, smart access system DTCs and Data List information can be confirmed even if the engine switch is off using either of the two methods below:

  • Connect the Techstream to the vehicle and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins (the Techstream screen changes when communication begins).
  • Connect the Techstream to the vehicle and select the Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Smart Access.

PRECAUTIONS WHEN REPLACING STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY)

(a) If the steering lock ECU (steering lock actuator or upper bracket assembly) is replaced, be sure to confirm that the steering is unlocked by turning the steering wheel to the left and right before starting the engine. If the steering is locked for any reason, open and close a door with the engine switch off, and then unlock the steering lock by pressing the engine switch. This prevents the engine from starting while the steering is locked.

PRECAUTION FOR REGISTRATION

(a) If replacing any of the following parts, refer to the registration procedure.

Click here

(1) Certification ECU (Smart key ECU assembly)

(2) ECM

(3) Steering lock ECU (Steering lock actuator or upper bracket assembly)

(4) Key (Electrical key transmitter sub-assembly)

(5) ID code box (Immobiliser code ECU)

(6) Main body ECU (Multiplex network body ECU)

PRECAUTIONS FOR STEERING LOCK / UNLOCK FUNCTION

(a) After turning the engine switch off and opening and closing any of the doors, the steering wheel will be locked due to the steering lock function. Operating the engine switch again automatically cancels the steering lock function.

(b) To prevent the steering lock motor from overheating, the motor operation may be suspended if the steering is locked and unlocked repeatedly in a short period of time. In this case, refrain from operating the engine switch. After about 10 seconds, the steering lock motor will resume functioning.

    Parts Location
    PARTS LOCATION ILLUSTRATION *1 FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LH *2 ENGINE ROOM RELAY BLOCK AND JUNCTION BLOCK ASSEMBLY - IG2 RELAY - IG2-MAIN FUSE - ECU-IG2 NO. 1 FUSE ILLUSTR ...

    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 ...

    Other materials:

    Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Sliding Roof System: Key-off Operation Function Operates even if Operating Conditions are not Satisfied
    DESCRIPTION The sliding roof ECU (sliding roof drive gear sub-assembly) operates its built-in motor according to the sliding roof switch (map light assembly) operation. Using the sliding roof switch (map light assembly), if the sliding roof can be operated normally when 45 seconds or more have elaps ...

    Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Quarter Trim Speaker (w/o Rear No. 2 Seat): Inspection
    INSPECTION PROCEDURE 1. INSPECT QUARTER SIDE SPEAKER ASSEMBLY (a) With the speaker installed, check that there is no looseness or other abnormalities. (b) Check that there is no foreign matter in the speaker, no tears on the speaker cone or other abnormalities. (c) Measure the resistance of the s ...

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

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

    © 2024 Copyright www.lexusrx.net
    0.0182