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

Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual / Vehicle Interior / Seat / Lumbar Switch / Inspection

INSPECTION

PROCEDURE

1. INSPECT FRONT LUMBAR POWER SEAT SWITCH (DRIVER SEAT) (w/ Seat Variable Cushion Switch)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

3 - 5

Hold switch pressed

Below 1 Ω

1 - 2

1 - 5

Release switch pressed

2 - 3

4 - 5

Up switch pressed

2 - 6

2 - 4

Down switch pressed

5 - 6

1 - 2

Off

2 - 3

2 - 4

2 - 6

If the result is not as specified, replace the power seat switch assembly.

*a

Hold Switch

*b

Release Switch

*c

Up Switch

*d

Down Switch

*e

Component without harness connected

(Front Lumbar Power Seat Switch (Driver Seat))

2. INSPECT FRONT LUMBAR POWER SEAT SWITCH (DRIVER SEAT) (w/o Seat Variable Cushion Switch)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

3 - 5

Hold switch pressed

Below 1 Ω

1 - 2

1 - 2

Off

2 - 3

1 - 5

Release switch pressed

2 - 3

If the result is not as specified, replace the power seat switch assembly.

*a

Hold Switch

*b

Release Switch

*c

Component without harness connected

(Front Lumbar Power Seat Switch (Driver Seat))

3. INSPECT FRONT LUMBAR POWER SEAT SWITCH (FRONT PASSENGER SEAT) (w/ Seat Variable Cushion Switch)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

1 - 5

Hold switch pressed

Below 1 Ω

2 - 3

1 - 2

Release switch pressed

3 - 5

4 - 5

Up switch pressed

2 - 6

2 - 4

Down switch pressed

5 - 6

1 - 2

Off

2 - 3

2 - 4

2 - 6

If the result is not as specified, replace the power seat switch assembly.

*a

Release Switch

*b

Hold Switch

*c

Up Switch

*d

Down Switch

*e

Component without harness connected

(Front Lumbar Power Seat Switch (Front Passenger Seat))

4. INSPECT FRONT LUMBAR POWER SEAT SWITCH (FRONT PASSENGER SEAT) (w/o Seat Variable Cushion Switch)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

1 - 5

Hold switch pressed

Below 1 Ω

2 - 3

1 - 2

Off

2 - 3

1 - 2

Release switch pressed

3 - 5

If the result is not as specified, replace the power seat switch assembly.

*a

Release Switch

*b

Hold Switch

*c

Component without harness connected

(Front Lumbar Power Seat Switch (Front Passenger Seat))
    Removal
    REMOVAL CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during fron ...

    Installation
    INSTALLATION CAUTION / NOTICE / HINT CAUTION: Wear protective gloves. Sharp areas on the parts may injure your hands. HINT: Use the same procedure for the RH side and LH side. The following proce ...

    Other materials:

    Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Air Conditioning System: IG Power Source Circuit
    DESCRIPTION Power source voltage is supplied to the air conditioning amplifier assembly when the engine switch is turned on (IG). This power is used for operating the air conditioning amplifier assembly, servo motors, etc. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Inspect the fuses for circuit ...

    Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Intelligent Clearance Sonar System: Steering Angle Sensor Failure (C1626)
    DESCRIPTION This DTC is stored if the clearance warning ECU assembly receives a signal via CAN communication from the steering sensor that indicates an internal malfunction. DTC No. Detection Item DTC Detection Condition Trouble Area C1626 Steering Angle Sensor Failure A fail flag i ...

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

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

    © 2025 Copyright www.lexusrx.net
    0.0092