Problem Symptoms Table [09/2020 - ]
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.
- 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.
POWER DOOR LOCK CONTROL SYSTEM
| Symptom | Suspected Area | Link |
|---|---|---|
| Only driver door LOCK/UNLOCK functions do not operate | Front door lock with motor assembly LH | Refer to INSPECTION [04/2013 - ] |
| Wire harness or connector | - | |
| Main body ECU (Multiplex network body ECU) | - | |
| Instrument panel junction block assembly | - | |
| Only front passenger door LOCK/UNLOCK functions do not operate | Front door lock with motor assembly RH | Refer to INSPECTION [04/2013 - ] |
| Wire harness or connector | - | |
| Main body ECU (Multiplex network body ECU) | - | |
| Instrument panel junction block assembly | - | |
| Only rear door LH LOCK/UNLOCK functions do not operate | Rear door lock with motor assembly LH | Refer to INSPECTION [09/2020 - ] |
| Wire harness or connector | - | |
| Main body ECU (Multiplex network body ECU) | - | |
| Instrument panel junction block assembly | - | |
| Only rear door RH LOCK/UNLOCK functions do not operate | Rear door lock with motor assembly RH | Refer to INSPECTION [09/2020 - ] |
| Wire harness or connector | - | |
| Main body ECU (Multiplex network body ECU) | - | |
| Instrument panel junction block assembly | - | |
| All doors LOCK/UNLOCK functions do not operate | Main body ECU (Multiplex network body ECU) | - |
| Instrument panel junction block assembly | - | |
| All doors LOCK/UNLOCK functions do not operate via door control switch or door key cylinder | Multiplex network master switch assembly | Refer to All Doors LOCK/UNLOCK Functions do not Operate Via Door Control Switch or Door Key Cylinder [04/2013 - ] |
| Front door lock with motor assembly LH | - | |
| Wire harness or connector | - | |
| Main body ECU (Multiplex network body ECU) | - | |
| All doors LOCK/UNLOCK functions do not operate via door control switch | Door control switch (power window regulator switch assembly) | Refer to All Doors LOCK/UNLOCK Functions do not Operate Via Door Control Switch [04/2013 - ] |
| Wire harness or connector | - | |
| Main body ECU (Multiplex network body ECU) | - | |
| Lock operation continues even after doors have been locked*1 | Front door lock with motor assembly LH | Refer to INSPECTION [04/2013 - ] |
| Front door lock with motor assembly RH | Refer to INSPECTION [04/2013 - ] | |
| Rear door lock with motor assembly LH | Refer to INSPECTION [09/2020 - ] | |
| Rear door lock with motor assembly RH | Refer to INSPECTION [09/2020 - ] | |
| Wire harness or connector | - | |
| Instrument panel junction block assembly | - | |
| Main body ECU (Multiplex network body ECU) | - | |
| Remote door lock functions do not operate*2 | Telematics system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2020 - ] |
HINT:
- *1: When the door unlock detection switch detects an unlock position signal after a door lock operation has been performed, a door lock operation will be performed 3 times.
- *2: w/ Telematics System