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 ...

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