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

INSPECTION

PROCEDURE

1. INSPECT STEERING PAD SWITCH ASSEMBLY

(a) Measure the resistance according to the value(s) in the table below.

Text in Illustration

*A

w/ Lane Departure Alert System

-

-

*a

Component without harness connected

(Steering Pad Switch Assembly)

*b

Seek+

*c

Seek-

*d

Volume+

*e

Volume-

*f

MODE

*g

Voice

*h

Off Hook

*i

On Hook

*j

Up

*k

Down

*l

Left

*m

Right

*n

Enter

*o

Back

*p

Top

*q

Lane Departure Alert

*r

Distance Control

Standard Resistance:

Tester Connection

Condition

Specified Condition

A-11 - A-8

No switch pushed

95 to 105 kΩ

Seek+ switch pushed

Below 2.5 Ω

Seek- switch pushed

313 to 345 Ω

Volume+ switch pushed

950 to 1050 Ω

Volume- switch pushed

2955 to 3265 Ω

A-10 - A-8

No switch pushed

95 to 105 kΩ

MODE switch pushed

Below 2.5 Ω

On hook switch pushed

313 to 345 Ω

Off hook switch pushed

950 to 1050 Ω

Voice switch pushed

2955 to 3265 Ω

A-3 - A-8

No switch pushed

95 to 105 kΩ

Left switch pushed

Below 2.5 Ω

Up switch pushed

313 to 345 Ω

Down switch pushed

950 to 1050 Ω

Right switch pushed

2955 to 3265 Ω

A-2 - A-8

No switch pushed

95 to 105 kΩ

Enter switch pushed

Below 2.5 Ω

Top switch pushed

313 to 345 Ω

Back switch pushed

950 to 1050 Ω

A-4 - A-7*

No switch pushed

1 MΩ or higher

Distance control switch pushed

Below 2.5 Ω

Lane departure alert switch pushed

228 to 252 Ω

A-6 - B-1

Always

Below 2.5 Ω

A-7 - C-1

Always

Below 2.5 Ω

A-12 - C-3

Always

Below 2.5 Ω

  • *: w/ Lane Departure Alert System

HINT:

If the result is not as specified, replace the steering pad switch assembly.

(b) Check the illumination.

*a

Component without harness connected

(Steering Pad Switch Assembly)

-

-

(1) Connect a positive (+) lead from the battery to terminal 5 and a negative (-) lead to terminal 9 of the steering pad switch assembly connector.

(2) Check that the steering pad switch assembly illumination illuminates.

OK:

The steering pad switch assembly illumination illuminates.

HINT:

If the result is not as specified, replace the steering pad switch assembly.

    Components
    COMPONENTS ILLUSTRATION *1 STEERING PAD SWITCH ASSEMBLY - - N*m (kgf*cm, ft.*lbf): Specified torque - - ...

    Installation
    INSTALLATION PROCEDURE 1. INSTALL STEERING PAD SWITCH ASSEMBLY (a) Engage the 2 claws and 2 pins to install the steering pad switch assembly. (b) Install the 2 screws. Torque: 2.4 N·m {24 kgf·cm, 2 ...

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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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