Tech Tips
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 |
|---|---|---|
| Lane departure alert system does not operate | Power source circuit | |
| Main switch circuit | ||
| CAN communication system | - | |
| Lane departure warning camera | ||
| Lane departure alert indicator abnormal (does not turn on) | Indicator circuit | |
| Main switch circuit | ||
| CAN communication system | - | |
| Combination meter assembly | ||
| Lane departure warning camera | ||
| Lane departure alert indicator abnormal (remains on) | Indicator circuit | |
| Main switch circuit | ||
| CAN communication system | - | |
| Combination meter assembly | ||
| Lane departure warning camera | ||
| Lane departure alert system is not canceled even when turn signal light switch is operated | Lighting system (turn signal light operation) | |
| Meter / gauge system (turn indicator light operation) | ||
| CAN communication system | - | |
| Lane departure warning camera | ||
| Increase in cases that driver can see lane markers but system cannot detect lane markers | Windshield glass is dirty | - |
| Lane departure warning camera is dirty | - | |
| Headlight assemblies are dirty or worn | - | |
| Adjustment of lane departure warning camera | ||
| Lane departure warning camera | ||
| Lane departure alert system is operating, but no operation condition is displayed on multi-information display in combination meter assembly | Combination meter assembly | |
| Lane departure warning camera | ||
| Buzzer does not sound even when lane markers are lost while lane departure warning function is operating | Skid control buzzer assembly*1 | |
| Lane departure warning buzzer*2 | ||
| Lane departure warning camera |
*1: w/ Dynamic Radar Cruise Control System
*2: w/o Dynamic Radar Cruise Control System