Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM1000000018CTW
Model Year Start: 2018 Model: Sienna Prod Date Range: [11/2017 -           ]
Title: THEFT DETERRENT / KEYLESS ENTRY: CERTIFICATION ECU: INSTALLATION; 2018 - 2020 MY Sienna [11/2017 -        ]

INSTALLATION

PROCEDURE

1. INSTALL CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

(a) Engage the 2 claws to install the certification ECU (smart key ECU assembly).

2. INSTALL ECU INTEGRATION BOX RH

(a) Install the ECU integration box RH with the 2 nuts and bolt.

(b) Engage the 2 clamps.

HINT:

If the vehicle is equipped with a wire harness clamp, engage the clamp.

(c) Connect each connector.

3. INSTALL MAYDAY ECU ASSEMBLY (w/ Mayday System)

Click here 2018 - 2020 MY Sienna [11/2017 -        ]; CELLULAR COMMUNICATION: MAYDAY ECU: INSTALLATION+

4. INSTALL PARKING ASSIST ECU (w/ Panoramic View Monitor System)

Click here 2018 - 2020 MY Sienna [11/2017 -        ]; PARK ASSIST / MONITORING: PARKING ASSIST ECU: INSTALLATION+

5. INSTALL GLOVE COMPARTMENT DOOR SUB-ASSEMBLY

(See page 2018 - 2020 MY Sienna [11/2017 -        ]; INTERIOR PANELS / TRIM: INSTRUMENT PANEL SAFETY PAD: INSTALLATION+ )

6. INSTALL FRONT DOOR OPENING TRIM WEATHERSTRIP RH

7. INSTALL COWL SIDE TRIM BOARD RH

(See page 2018 - 2020 MY Sienna [11/2017 -        ]; INTERIOR PANELS / TRIM: ROOF HEADLINING: INSTALLATION+ )

8. INSTALL FRONT DOOR SCUFF PLATE RH

(See page 2018 - 2020 MY Sienna [11/2017 -        ]; INTERIOR PANELS / TRIM: ROOF HEADLINING: INSTALLATION+ )

9. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL

Torque:

5.4 N·m {55 kgf·cm, 48 in·lbf}

NOTICE:

When disconnecting the cable, some systems need to be initialized after the cable is reconnected (See page 2018 - 2020 MY Sienna [11/2017 -        ]; INTRODUCTION: REPAIR INSTRUCTION: INITIALIZATION ).

10. REGISTER KEY

NOTICE:

When replacing the certification ECU (smart key ECU assembly), perform registration (See page 2017 - 2020 MY Sienna [08/2016 -        ]; THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM(w/ Smart Key System): REGISTRATION ).

11. REGISTER ECU COMMUNICATION ID

NOTICE:

When replacing the certification ECU (smart key ECU assembly), perform registration (See page 2017 - 2020 MY Sienna [08/2016 -        ]; THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM(w/ Smart Key System): REGISTRATION ).