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 SystemSymptom | Suspected Area | See page |
|---|---|---|
Entry answer-back buzzer does not sound |
Wireless door lock control system |
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Certification ECU (smart key ECU assembly) |
- |
|
All door entry lock/unlock functions and wireless functions do not operate |
Power door lock control system |
|
Key |
- |
|
Key battery |
- |
|
Fuse (EFI NO. 1, 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 |
|
Certification ECU (Smart key ECU assembly) |
- |
|
Driver side door entry unlock function does not operate |
Power door lock control system |
|
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 |
|
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 |
|
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 |
|
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 |
|
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 |
|
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) |
|
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 |
|
Certification ECU (Smart key ECU assembly) |
- |
|
Back door entry unlock function does not operate |
Power door lock control system |
|
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 |
|
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 |
|
Back door opener switch assembly |
- |
|
Certification ECU (Smart key ECU assembly) |
- |
|
Wire harness or connector |
- |
Test yourself
A quick Toyota Venza quiz: every answer comes with an explanation and a link to the manual page.