Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000000VJJY
Model Year Start: 2016 Model: Sienna Prod Date Range: [12/2015 -           ]
Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM(for Entry Function): PROBLEM SYMPTOMS TABLE; 2016 - 2020 MY Sienna [12/2015 -        ]

PROBLEM SYMPTOMS TABLE

HINT:

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.

Smart Key System

Symptom

Suspected Area

See page

Entry answer-back buzzer does not sound

Wireless door lock control system

2016 - 2020 MY Sienna [12/2015 -        ]; DOOR LOCK: WIRELESS DOOR LOCK CONTROL SYSTEM(w/ Smart Key System): No Answer-Back

Certification ECU (smart key ECU assembly)

-

All door entry lock/unlock functions and wireless functions do not operate

Power door lock control system

2016 - 2020 MY Sienna [12/2015 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM(for Entry Function): All Door Entry Lock/Unlock Functions and Wireless Functions do not Operate

Key

-

Key battery

-

Fuse (SMART, ECU-B)

-

Wire harness or connector

-

Door control receiver assembly

-

Certification ECU (Smart key ECU assembly)

-

All door entry lock/unlock functions do not operate, but wireless functions operate

Key

2016 - 2020 MY Sienna [12/2015 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM(for Entry Function): All Door Entry Lock/Unlock Functions do not Operate, but Wireless Functions Operate

Certification ECU (Smart key ECU assembly)

-

Driver side door entry unlock function does not operate

Power door lock control system

2016 - 2020 MY Sienna [12/2015 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM(for Entry Function): Driver Side Door Entry Unlock Function does not Operate

Front door outside handle assembly (for driver side)

-

Certification ECU (Smart key ECU assembly)

-

Wire harness or connector

-

Front passenger side door entry unlock function does not operate

Power door lock control system

2016 - 2020 MY Sienna [12/2015 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM(for Entry Function): Front Passenger Side Door Entry Unlock Function does not Operate

Front door outside handle assembly (for front passenger side)

-

Certification ECU (Smart key ECU assembly)

-

Wire harness or connector

-

Driver side door entry lock and unlock functions do not operate

Power door lock control system

2016 - 2020 MY Sienna [12/2015 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM(for Entry Function): Driver Side Door Entry Lock and Unlock Functions do not Operate

Front door outside handle assembly (for driver side)

-

Certification ECU (Smart key ECU assembly)

-

Wire harness or connector

-

Front passenger side door entry lock and unlock functions do not operate

Power door lock control system

2016 - 2020 MY Sienna [12/2015 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM(for Entry Function): Front Passenger Side Door Entry Lock and Unlock Functions do not Operate

Front door outside handle assembly (for front passenger side)

-

Certification ECU (Smart key ECU assembly)

-

Wire harness or connector

-

Driver side door entry lock function does not operate

Power door lock control system

2016 - 2020 MY Sienna [12/2015 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM(for Entry Function): Driver Side Door Entry Lock Function does not Operate

Front door outside handle assembly (for driver side)

-

Certification ECU (Smart key ECU assembly)

-

Wire harness or connector

-

Front passenger side door entry lock function does not operate

Power door lock control system

2016 - 2020 MY Sienna [12/2015 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM(for Entry Function): Front Passenger Side Door Entry Lock Function does not Operate

Front door outside handle assembly (for front passenger side)

-

Certification ECU (Smart key ECU assembly)

-

Wire harness or connector

-

Room oscillator does not recognize key

Indoor electrical key oscillator (for front floor)

2016 - 2020 MY Sienna [12/2015 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM(for Entry Function): Room Oscillator does not Recognize Key

Indoor electrical key oscillator (for center floor)

-

Indoor electrical key oscillator (for rear floor)

-

Certification ECU (Smart key ECU assembly)

-

Wire harness or connector

-

Entry interior alarm does not sound

Meter / gauge system

2016 MY Sienna [12/2015 - 08/2016]; METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM: PROBLEM SYMPTOMS TABLE 2017 MY Sienna [08/2016 - 11/2017]; METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM: PROBLEM SYMPTOMS TABLE 2018 - 2020 MY Sienna [11/2017 -        ]; METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM: PROBLEM SYMPTOMS TABLE

Certification ECU (Smart key ECU assembly)

-

Back door entry unlock function does not operate

Power door lock control system

2016 - 2020 MY Sienna [12/2015 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM(for Entry Function): Back Door Entry Unlock Function does not Operate

Back door opener switch assembly

-

Certification ECU (Smart key ECU assembly)

-

Wire harness or connector

-

Back door entry lock and unlock functions do not operate

Power door lock control system

2016 - 2020 MY Sienna [12/2015 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM(for Entry Function): Back Door Entry Lock and Unlock Functions do not Operate

Outside electrical key oscillator (for rear side)

-

Certification ECU (Smart key ECU assembly)

-

Back door opener switch assembly

-

Wire harness or connector

-

Back door entry lock function does not operate

Power door lock control system

2016 - 2020 MY Sienna [12/2015 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM(for Entry Function): Back Door Entry Lock Function does not Operate

Back door opener switch assembly

-

Certification ECU (Smart key ECU assembly)

-

Wire harness or connector

-

Only smart power slide door function does not operate

Power slide door system

2016 - 2020 MY Sienna [12/2015 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM(for Entry Function): Power Slide Door Entry Function does not Operate

Power slide door ECU assembly

-

Wire harness or connector

-