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:
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.
HORN SYSTEM
| Symptom | Suspected Area | See |
|---|---|---|
| Horn does not sound | HORN fuse | - |
| HORN relay | Refer to ON-VEHICLE INSPECTION [08/2013 - ] | |
| Horn button assembly | - | |
| Spiral cable with sensor sub-assembly | Refer to INSPECTION [08/2013 - ] | |
| Steering pad switch assembly | Refer to INSPECTION [08/2013 - ] | |
| Instrument panel junction block assembly | - | |
| Wire harness or connector | - | |
| Horn blows all the time | HORN relay | Refer to ON-VEHICLE INSPECTION [08/2013 - ] |
| Horn button assembly | - | |
| Wire harness or connector | - | |
| Low pitched horn operates but high pitched horn does not operate | High pitched horn assembly | Refer to INSPECTION [08/2013 - ] |
| Wire harness or connector | - | |
| High pitched horn operates but low pitched horn does not operate | Low pitched horn assembly | Refer to INSPECTION [08/2013 - ] |
| Wire harness or connector | - |