Entry function (vehicles with a smart key system)
Carry the electronic key to enable this function.

The doors cannot be unlocked for 3 seconds after the doors are locked.
*: The door unlock settings can be changed.
Check that the door is securely locked.
Wireless remote control



Key

Turning the key unlocks the driver’s side doors. Turning the key again within 3 seconds unlocks the other doors.
The doors can also be locked and unlocked with the mechanical key.
Operation signals
A buzzer sounds and the emergency flashers flash to indicate that the doors have been locked/unlocked. (Locked: Once; Unlocked: Twice)
Security feature
If a door is not opened within approximately 60 seconds after the vehicle is unlocked, the security feature automatically locks the vehicle again.
When the door cannot be locked by the lock sensor on the upper part of the front door handle

Touch both lock sensors on the upper and lower part of the front door handle simultaneously.
Door lock buzzer
If an attempt to lock the doors (except for power sliding doors or power back door) is made when a door is not fully closed, a buzzer sounds continuously.
Fully close the door to stop the buzzer, and lock the vehicle once more.
Alarm (if equipped)
Using the wireless remote control to lock the doors will set the alarm system.
If the smart key system or the wireless remote control does not operate properly
Vehicles with a smart key system: Use the mechanical key to lock and unlock the doors. Replace the key battery with a new one if it is depleted
Front doors
Unlocking and locking the doors from the insideOn-vehicle inspection
1. INSPECT OCCUPANT CLASSIFICATION ECU
(VEHICLE NOT INVOLVED IN COLLISION)
Perform a diagnostic system check.
2. INSPECT OCCUPANT CLASSIFICATION ECU
(VEHICLE INVOLVED IN COLLISION)
Perform a diagnostic system check.
Even if the airbag was not deployed, check if there
is ...
Precaution
1. HANDLING PRECAUTIONS ON STEERING SYSTEM
(a) Be careful to replace the parts properly because
they could affect the performance of the steering
system and result in a driving hazard.
2. HANDLING PRECAUTIONS ON SRS AIRBAG
SYSTEM
(a) The SIENNA is equipped with SRS (Supplemental
Restraint Sys ...
Short to GND in Curtain Shield Squib LH Circuit
DTC B1167/85 Short to GND in Curtain Shield Squib LH Circuit
DESCRIPTION
The curtain shield squib LH circuit consists of the center airbag sensor
assembly and the curtain shield
airbag assembly LH.
The circuit instructs the SRS to deploy when deployment conditions are met.
DTC B1167/85 is ...