Diagnosis System [09/2014 - 11/2017]
WARNING: This page is about a different car, the 2019 Lexus RC F, 2018 Lexus RC F, 2017 Lexus RC F, 2016 Lexus RC F, and 2015 Lexus RC F. However, it is still accessible from the selected car via links, so may be relevant.
- DESCRIPTION
- Automatic headlight beam level control system data and Diagnostic Trouble Codes (DTCs) can be read from the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the Techstream to check for malfunctions and perform repairs.
- CHECK DLC3
- Check the DLC3.
Refer to GENERAL INFORMATION [09/2014 - ]
- Check the DLC3.
- INSPECT BATTERY VOLTAGE
- Measure the battery voltage.
Standard Voltage
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery.
- Measure the battery voltage.
- DIAGNOSIS SYSTEM
- If the automatic headlight beam level control system malfunctions, the headlight leveling warning light illuminates and "Check Headlight System" is displayed on the multi-information display.
*a Headlight Leveling Warning Light *b Multi-information Display HINT:
- In this case, the headlight light control ECU sub-assembly LH stores DTCs.
- When the system returns to normal, the headlight leveling warning light turns off and "Check Headlight System" is no longer displayed on the multi-information display.
- If the automatic headlight beam level control system malfunctions, the headlight leveling warning light illuminates and "Check Headlight System" is displayed on the multi-information display.