Lexus RX (RX 350L, RX450h) 2016-2023 Repair Manual: Calibration

Lexus RX (RX 350L, RX450h) 2016-2023 Repair Manual / Drivetrain / Mf1a (transfer / 4wd / Awd) / Dynamic Torque Control Awd System / Calibration

CALIBRATION

DESCRIPTION

(a) When the 4WD ECU assembly is replaced with a known good one from another vehicle or the acceleration sensor (airbag ECU assembly*1 or yaw rate sensor assembly*2) is replaced, perform calibration.

(b) Follow the chart to perform calibration.

Part Replaced

Necessary Operation

4WD ECU assembly (When replaced with a known good one from another vehicle)

Clear zero point calibration data

Acceleration sensor (airbag sensor assembly)*1

Acceleration sensor (yaw rate sensor assembly)*2
  1. Clear zero point calibration data
  2. Perform yaw rate and acceleration sensor zero point calibration

HINT:

  • When the 4WD ECU assembly is replaced with a new one, calibration is unnecessary.
  • *1: w/ Optitron Meter Type
  • *2: w/ TFT Meter Type

PERFORM CALIBRATION

(a) Clear the zero point calibration data.

(1) Turn the engine switch off.

(2) Connect the Techstream to the DLC3.

(3) Turn the engine switch on (IG).

(4) Turn the Techstream on.

(5) Enter the following menus: Chassis / Four Wheel Drive / Utility / Reset Memory.

Chassis > Four Wheel Drive > Utility

Tester Display

Reset Memory

(6) Operate the Techstream to clear the data.

    System Diagram
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