Problem Symptoms Table [08/2013 - ]
WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
HINT:
- Troubleshooting of the theft deterrent system is based on the premise that the power door lock control system and the wireless door lock control system are operating normally. Accordingly, before troubleshooting the theft deterrent system, first make certain that the power door lock control system and the wireless door lock control system are operating normally.
- 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.
THEFT DETERRENT SYSTEM
| Symptom | Suspected Area | See |
|---|---|---|
| Theft deterrent system cannot be set | Immobiliser system "security indicator light does not blink" | Refer to Security Indicator Light Does not Blink [08/2013 - ] |
| Front door courtesy switch circuit | Refer to Front Door Courtesy Switch Circuit [08/2013 - ] | |
| Rear door courtesy switch circuit | Refer to Rear Door Courtesy Switch Circuit [08/2013 - ] | |
| Luggage compartment door courtesy switch circuit | Refer to Luggage Compartment Door Courtesy Switch Circuit [08/2013 - ] | |
| Front door lock assembly | Refer to INSPECTION [08/2013 - ] | |
| Rear door lock assembly | Refer to INSPECTION [08/2013 - ] | |
| Luggage compartment door lock assembly | Refer to INSPECTION [08/2013 - ] | |
| Engine hood courtesy switch circuit | Refer to Engine Hood Courtesy Switch Circuit [08/2013 - ] | |
| Security indicator light does not blink when theft deterrent system is set | Immobiliser system "security indicator light does not blink" | Refer to Security Indicator Light Does not Blink [08/2013 - ] |
| Alarm sounding state cannot be canceled when power switch is turned to on (IG) | Smart access system with push-button start (for start function) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ] |
| Certification ECU (smart key ECU assembly) | - | |
| If the symptom(s) still occur after the above areas are inspected and proved to be normal, replace the main body ECU (multiplex network body ECU)*2 | Refer to REMOVAL [08/2013 - ] | |
| Theft deterrent system can be set even when door is open | Front door courtesy switch circuit | Refer to Front Door Courtesy Switch Circuit [08/2013 - ] |
| Rear door courtesy switch circuit | Refer to Rear Door Courtesy Switch Circuit [08/2013 - ] | |
| Luggage compartment door courtesy switch circuit | Refer to Luggage Compartment Door Courtesy Switch Circuit [08/2013 - ] | |
| If the symptom(s) still occur after the above areas are inspected and proved to be normal, replace the main body ECU (multiplex network body ECU)*2 | Refer to REMOVAL [08/2013 - ] | |
| Theft deterrent system can be set even when engine hood is open | Engine hood courtesy switch circuit | Refer to Engine Hood Courtesy Switch Circuit [08/2013 - ] |
| Vehicle horns do not sound while theft deterrent system is in alarm sounding state | Horn circuit | Refer to Horn Circuit [08/2013 - ] |
| Headlights do not blink while theft deterrent system is in alarm sounding state*1 | Low beam headlight circuit | Refer to Low Beam Headlight Circuit [08/2013 - ] |
| If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU)*2 | Refer to REMOVAL [08/2013 - ] | |
| Taillights do not blink while theft deterrent system is in alarm sounding state*1 | Taillight relay circuit | Refer to Taillight Relay Circuit [08/2013 - ] |
| If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU)*2 | Refer to REMOVAL [08/2013 - ] | |
| Hazard warning lights do not flash while theft deterrent system is in alarm sounding state | Combination meter assembly | - |
| If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU)*2 | Refer to REMOVAL [08/2013 - ] | |
| Interior light does not light up while theft deterrent system is in alarm sounding state*1 | Interior light circuit | Refer to Interior Light Circuit [08/2013 - ] |
| If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU)*2 | Refer to REMOVAL [08/2013 - ] | |
| Security horn does not sound while theft deterrent system is in alarm sounding state | Security horn circuit | Refer to Security Horn Circuit [08/2013 - ] |
| Headlights blink even when theft deterrent system is not set*1 | Low beam headlight circuit | Refer to Low Beam Headlight Circuit [08/2013 - ] |
| If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU)*2 | Refer to REMOVAL [08/2013 - ] | |
| Taillights blink even when theft deterrent system is not set*1 | Taillight relay circuit | Refer to Taillight Relay Circuit [08/2013 - ] |
| If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU)*2 | Refer to REMOVAL [08/2013 - ] | |
| Hazard warning lights flash even when theft deterrent system is not set | Combination meter assembly | - |
| If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU)*2 | Refer to REMOVAL [08/2013 - ] | |
| Interior light comes on even when theft deterrent system is not set*1 | Interior light circuit | Refer to Interior Light Circuit [08/2013 - ] |
| If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU)*2 | Refer to REMOVAL [08/2013 - ] |
- *1: w/ Side Marker Light
- *2: If the main body ECU (multiplex network body ECU) is replaced, refer to Registration. Refer to REGISTRATION [08/2013 - ] .