AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM PROBLEM SYMPTOMS TABLE

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.

Automatic Headlight Beam Level Control
Symptom	Suspected Area	See page
Headlight beam level control indicator light flashes.	Check DTCs	Click here
	Indicator circuit	Click here
	Headlight leveling ECU assembly	Click here
Headlight beam level control does not operate (indicator light is off).	Check the FAIL-SAFE function	Click here
	Check DTCs	Click here
	Headlight leveling ECU power source circuit	Click here
	Headlight signal circuit	Click here
	Headlight beam level control actuator circuit	Click here
	Speed signal circuit	Click here
	Headlight leveling ECU assembly	Click here
Headlight beam level control system indicator light does not come on when turning the engine switch on (IG).	Indicator circuit	Click here
	Headlight leveling ECU assembly	Click here
	Combination meter assembly	Click here
DTC information cannot be detected.	Diagnosis circuit	Click here
DTC information cannot be detected.	Headlight leveling ECU assembly	Click here
Initialization cannot be performed.	Check DTCs	Click here
	LVL terminal circuit	Click here
	Headlight leveling ECU assembly	Click here

Note

Initialize the headlight leveling ECU assembly after the vehicle height changes due to replacement of suspension components or after performing operations such as removal and reinstallation or replacement of the rear height control sensor sub-assembly.
When the headlight leveling ECU assembly is replaced, initialization is also necessary.