Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Customize Parameters

CUSTOMIZE PARAMETERS

CUSTOMIZE AIR CONDITIONING SYSTEM

(a) Customizing with the Techstream.

NOTICE:

  • When the customer requests a change in a function, first make sure that the function can be customized.
  • Be sure to make a note of the current settings before customizing.
  • When troubleshooting a function, first make sure that the function is set to the default setting.

HINT:

The following items can be customized.

(1) Connect the Techstream.

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

(3) Turn the Techstream on.

(4) Enter the following menus: Customize Setting / Air Conditioner.

(5) Select the setting by referring to the table below.

Air Conditioner

Tester Display

Description

Default

Setting

ECU

S-FLOW Control Auto Function

Function to turn the S-FLOW control on automatically when the engine switch is turned on (IG)

ON

0:ON,1:OFF

Air conditioning amplifier assembly

Set Temperature Shift

Function to perform control with the shifted temperature versus the displayed temperature

Normal

00001:-2C,00010:-1C,00100:Normal,01000:+1C,10000:+2C

Air conditioning amplifier assembly

Evaporator Control

Function to set the evaporator control to the automatic position (AUTO) to save power or to the coldest position (MANUAL) to dehumidify the air and to prevent the windows from fogging up

Automatic

0:Automatic,1:Manual

Air conditioning amplifier assembly

Compressor Mode

Function to turn the A/C on automatically by pressing the AUTO button when the blower is on and the A/C is off

Automatic

0:Automatic,1:Manual

Air conditioning amplifier assembly

Foot/DEF Auto Mode

Function to turn the airflow to foot/defroster automatically when AUTO mode is on

ON

0:ON,1:OFF

Air conditioning amplifier assembly

Foot/DEF Automatic Blow Up Function

Function to increase the blower level automatically when the defroster is on

ON

0:ON,1:OFF

Air conditioning amplifier assembly

Ambient Temperature Shift

Function to display the shifted ambient temperature versus the actual ambient temperature

Normal

0000001:-3C,0000010:-2C,0000100:-1C,0001000:Normal,0010000:+1C,0100000:+2C,1000000:+3C

Air conditioning amplifier assembly

Emission Gas Sensor Shift

Function to change the sensitivity of the smog ventilation sensor*

Normal

0000001:Much Less,0000010:Less,0000100:Little Less,0001000:Normal,0010000:Little More,0100000:More,1000000:Much More

Air conditioning amplifier assembly

ECO MODE Cancel

Function to cancel ECO mode when set to ON

ON

0:OFF,1:ON

Air conditioning amplifier assembly

Refrigerant Shortage Check

Function to cancel the refrigerant shortage check (check performed during normal operation) when set to ON

ON

0:ON,1:OFF

Air conditioning amplifier assembly

Fan speed increment control

Function to set the speed to reach the target blower fan speed when AUTO mode is on

Normal

001:Slow,010:Normal,100:Fast

Air conditioning amplifier assembly

Outside Air Mode Auto Switch Function

Function to automatically change the air inlet to FRESH mode when the engine switch is off for 60 seconds

ON

0:ON,1:OFF

Air conditioning amplifier assembly

  • *: w/ Smog Ventilation Sensor

(b) Customizing with the multi-display.

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

(2) Enter the following menus: MENU / Setup / Vehicle / Vehicle Customization / Climate settings.

(3) Select the setting by referring to the table below.

Climate Settings

Display

Default

Content

Setting

ECU

Smog Sensor Sensitivity*

0

Function to change the sensitivity of the smog ventilation sensor

-3, -2, -1, 0, +1, +2, +3

Air conditioning amplifier assembly

Auto A/C Mode

On

Function to turn the A/C on automatically by pressing the AUTO button when the blower is on and the A/C is off

On or Off

Air conditioning amplifier assembly

  • *: w/ Smog Ventilation Sensor

(4) Enter the following menus: MENU / Setup / Vehicle / Drive Mode Customization / Drive Mode Settings.

(5) Select the setting by referring to the table below.

Drive Mode Settings

Display

Default

Content

Setting

ECU

CLIMATE

NORMAL

Function to cancel ECO mode when set to ON

NORMAL or ECO

Air conditioning amplifier assembly

    System Description
    SYSTEM DESCRIPTION GENERAL The air conditioning system has the following controls. Control Outline Neural Network Control This control is capable of performing complex control by artificial ...

    How To Proceed With Troubleshooting
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