Caution / Notice / Hint

The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed, installed or replaced during the side auto step controller ECU assembly removal/installation are shown below.

HINT: 

• When the cable is disconnected/reconnected to the auxiliary battery terminal, systems temporarily stop operating. However, each system has a function that completes learning the first time the system is used.
  • Learning completes when vehicle is driven

    Effect/Inoperative Function when Necessary Procedures are not Performed	Necessary Procedures	Link
    Lighting system (EXT) Cornering lights	Drive the vehicle straight ahead at 35 km/h (22 mph) or more for 5 seconds or more.	Refer to INITIALIZATION [12/2023 - ]
    Front camera system

  • Learning completes when vehicle is operated normally

    Effect/Inoperative Function when Necessary Procedures are not Performed	Necessary Procedures	Link
    Power back door system	Fully close the back door by hand. HINT:  Initialization is not necessary if the above procedures are performed while the back door is closed.	Refer to INITIALIZATION [12/2023 - ]
    Air conditioning system	After the ignition switch is turned to ON, the servo motor and expansion valve standard position is recognized.	-

COMPONENTS (REMOVAL) 

Fig 1: Power Running Board ECU Removal Components

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Procedure		Part Name Code
1	FRONT SEAT ASSEMBLY RH	-	-	-	-
2	DOOR SCUFF PLATE ASSEMBLY RH	67910	-	-	-
3	COWL SIDE TRIM BOARD RH	62111C	-	-	-
4	FRONT FLOOR CARPET ASSEMBLY	58510D	See step  4	-	-
5	SIDE AUTO STEP CONTROLLER ECU ASSEMBLY	89720A	-	-	-