Initialization [10/2013 - ]

WARNING: This page is about a different variant/trim than selected.

NOTE:

Initialize the headlight leveling ECU assembly (set the zero point of the height control sensor in the headlight leveling ECU assembly) after the vehicle height changes due to replacement of the suspension or after performing such operations 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.
Adjust the headlight aim after initializing the headlight leveling ECU assembly. Refer to ADJUSTMENT [10/2013 - ] .

When a malfunction is detected in the automatic headlight beam level control system, height control sensor signal initialization is impossible. Perform troubleshooting before initialization.

PREPARE VEHICLE FOR INITIALIZATION
1. Unload the vehicle and its trunk, ensuring that the spare tire, tools and jack are in their original positions.
2. Check that there are no occupants in the vehicle.
3. Turn off the headlights.
4. Stop the vehicle on a level surface and keep the vehicle height unchanged.
  NEXT: Go to next step

CHECK HEADLIGHT BEAM LEVEL CONTROL INDICATOR LIGHT

Turn the power switch on (IG), and check the indicator light.

Condition	Specified Condition
The headlight leveling ECU assembly is replaced with a new one.	Indicator light continuously blinks 6 times at 2 Hz.
Removal and reinstallation of the headlight leveling ECU assembly, replacement of the rear height control sensor sub-assembly, removal and reinstallation of the rear height control sensor sub-assembly, replacement of the suspension, etc. is performed.	Indicator light comes on for approximately 3 seconds, and then goes off (bulb check function).

HINT:

If the indicator light does not come on when turning the power switch on (IG), inspect and repair it according to Problem Symptoms Table. Refer to PROBLEM SYMPTOMS TABLE [10/2013 - ] .

NG → GO TO PROBLEM SYMPTOMS TABLE

OK: Go to next step

INITIALIZATION

Connect terminals 4 (CG) and 8 (LVL) of the DLC3 using SST.

Fig 1: DLC3 Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- SST: 09843-18040

Turn the low beam headlights on and off using the light control switch within 20 seconds after connecting the terminals.

Fig 2: Identifying Number Of Times Low Beam Headlights Need To Be Turned On & Off

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

The number of times the low beam headlights need to be turned on and off is determined by the present fuel level as shown below.

Fuel Level	Number of Times to Turn Low Beam Headlights on and off
Fuel level is within A range.	1
Fuel level is within B range.	2
Fuel level is within C range.	3
Fuel level is within D range.	4
Fuel level is within E range.	5

NOTE:

Turn the low beam headlights on and off at less than 3-second intervals.
Be sure to operate the light control switch from outside the vehicle.

Check the indicator light.

Condition	Specified Condition
The headlight leveling ECU assembly is replaced with a new one.	Blinks 6 times at 2 Hz → Continuously blinks N*1 times at 2 Hz.
Replacement of the rear height control sensor sub-assembly, removal and reinstallation of the rear height control sensor sub-assembly, replacement of the suspension, etc. is performed.	Off → Continuously blinks N*1 times at 2 Hz.

HINT:

*1: The number of times that the indicator blinks is determined by the number of times the low beam headlights are turned on and off.
If initialization cannot be finished normally, disconnect SST from the DLC3 and turn the power switch off. Then, restart from the first step.

NG → GO TO PROBLEM SYMPTOMS TABLE

OK → TURN POWER SWITCH OFF (END)