Problem Symptoms Table [04/2013 - ]
WARNING: This page does not describe the selected car, but rather 27 other vehicles, including the 2024 Lexus IS 500, 2024 Lexus IS 350, 2024 Lexus IS 300, 2023 Lexus IS 500, and 2023 Lexus IS 350. However, it is still accessible from the selected car via links, so may be relevant.
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.
FRONT POWER SEAT CONTROL SYSTEM (W/ MEMORY)
| Symptom | Suspected Area | Link |
|---|---|---|
| Front power seat does not operate with front power seat switch | Front power seat switch LH | Refer to Front Power Seat does not Operate with Front Power Seat Switch [04/2013 - ] |
| Wire harness or connector | - | |
| One or more power seat motors do not operate | Front seat adjuster assembly LH | Refer to One or more Power Seat Motors do not Operate [04/2013 - ] |
| Separate type front seatback spring assembly (driver seat) | - | |
| Lumbar support adjuster assembly LH | - | |
| Front lumbar power seat switch | - | |
| Front power seat switch LH | - | |
| Wire harness or connector | - | |
| Power seat position is not memorized | Front power seat switch LH | Refer to Power Seat Position is not Memorized [04/2013 - ] |
| Outer mirror control ECU assembly (driver door) | - | |
| Main body ECU (Multiplex network body ECU) | - | |
| Seat memory switch LH | - | |
| Wire harness or connector | - | |
| Power seat does not return to memorized position | Automatic transmission system | Refer to Power Seat does not Return to Memorized Position [04/2013 - 08/2015] , or refer to Power Seat does not Return to Memorized Position [08/2015 - 10/2017] , or refer to Power Seat does not Return to Memorized Position [10/2017 - 11/2021] , or refer to Power Seat does not Return to Memorized Position [11/2021 - ] |
| Lighting system (int) | - | |
| Front power seat switch LH | - | |
| Main body ECU (Multiplex network body ECU) | - | |
| Outer mirror control ECU assembly (driver door) | - | |
| Wireless transmitter memory function does not operate | Power door lock control system | Refer to Wireless Transmitter Memory Function does not Operate [04/2013 - ] |
| Lighting system (int) | - | |
| Smart access system with push-button start (for start function) | - | |
| Front power seat switch LH | - | |
| Main body ECU (Multiplex network body ECU) | - | |
| Certification ECU (Smart key ECU assembly) | - | |
| Wireless-linked return function does not operate | Wireless door lock control system | Refer to Wireless-linked Return Function does not Operate [04/2013 - ] |
| Lighting system (int) | - | |
| Smart access system with push-button start (for entry function) | - | |
| Main body ECU (Multiplex network body ECU) | - | |
| Front power seat switch LH | - | |
| Certification ECU (Smart key ECU assembly) | - | |
| Power seat power easy access system function does not operate | Front power seat switch LH | Refer to Power Seat Power Easy Access System Function does not Operate [04/2013 - ] |
| Main body ECU (Multiplex network body ECU) | - | |
| Front seat inner belt assembly LH | - |