Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
- Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
| Symptom | Suspected Area | Link |
|---|---|---|
| All functions do not operate | Front power seat switch LH | |
| Wire harness or connector | - | |
| Only slide function does not operate | Front power seat switch LH | |
| Slide motor (Front seat adjuster assembly LH) | | |
| Wire harness or connector | - | |
| Only front vertical function does not operate | Front power seat switch LH | |
| Front vertical motor (Front seat adjuster assembly LH) | | |
| Wire harness or connector | - | |
| Only lifter function does not operate | Front power seat switch LH | |
| Lifter motor (Front seat adjuster assembly LH) | | |
| Wire harness or connector | - | |
| Only reclining function does not operate | Front power seat switch LH | |
| Reclining motor (Front seatback frame sub-assembly LH) | | |
| Wire harness or connector | - | |
| Only lumbar support adjustment function does not operate | Front lumbar power seat switch (driver seat) | |
| Front power seat switch LH | | |
| Lumbar support adjuster assembly LH | | |
| Wire harness or connector | - |
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| Symptom | Suspected Area | Link |
|---|---|---|
| All functions do not operate | Front power seat switch RH | |
| Wire harness or connector | - | |
| Only slide function does not operate | Front power seat switch RH | |
| Slide motor (Front seat adjuster assembly RH) | | |
| Wire harness or connector | - | |
| Only front vertical function does not operate | Front power seat switch RH | |
| Front vertical motor (Front seat adjuster assembly RH) | | |
| Wire harness or connector | - | |
| Only lifter function does not operate | Front power seat switch RH | |
| Lifter motor (Front seat adjuster assembly RH) | | |
| Wire harness or connector | - | |
| Only reclining function does not operate | Front power seat switch RH | |
| Reclining motor (Front seatback frame sub-assembly RH) | | |
| Wire harness or connector | - | |
| Only lumbar support adjustment function does not operate | Front lumbar power seat switch (front passenger seat) | |
| Front power seat switch RH | | |
| Lumbar support adjuster assembly RH | | |
| Wire harness or connector | - | |
| Only cushion length function does not operate* | Seat variable cushion switch RH | |
| Length motor (Front seat vertical adjuster assembly RH) | | |
| Wire harness or connector | - |
- *: w/ Seat Variable Cushion Switch
System Diagram
SYSTEM DIAGRAM Driver Seat Front Passenger Seat ...
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
- For your information
- Pictorial index
- For safety and security
- Instrument cluster
- Operation of each component
- Driving
- Lexus Display Audio system
- Interior features
- Maintenance and care
- When trouble arises
- Vehicle specifications
- For owners
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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