Toyota Sienna 2010-2024 Owners Manual: Active head restraints

Toyota Sienna 2010-2024 Owners Manual / Operation of each component / Adjusting the seats / Front seats / Active head restraints

Toyota Sienna. Active head restraints

When the occupant’s lower back presses against the seatback during a rear-end collision, the head restraint moves slightly forward and upward to help reduce the risk of whiplash on the seat occupant

Active head restraints

Even small forces applied to the seatback may cause the head restraint to move. When a locked head restraint is pushed up forcibly, the head restraint inner structure may appear. This does not indicate a problem.

Toyota Sienna. Active head restraints

WARNING

When adjusting the seat position

Take care when adjusting the seat position to ensure that other passengers are not injured by the moving seat.
Do not put your hands under the seat or near the moving parts to avoid injury.
Fingers or hands may become jammed in the seat mechanism.
Make sure to leave enough space around the feet so they do not get stuck.

Seat adjustment

Be careful that the seat does not hit passengers or luggage.
To reduce the risk of sliding under the lap belt during a collision, do not recline the seat more than necessary.
If the seat is reclined too far, the lap belt may slide past the hips and apply restraint forces directly to the abdomen or your neck may contact the shoulder belt, increasing the risk of death or serious injury in the event of an accident.
Adjustments should not be made while driving as the seat may unexpectedly move and cause the driver to lose control of the vehicle.
Manual seat: After adjusting the seat, make sure that the seat is locked in position.

Adjustment procedure

Manual seat Seat position adjustment lever Seatback angle adjustment lever Vertical height adjustment lever (driver’s side only) Lumbar support adjustment switch (driver’s side ...

Rear seats

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Other materials:

Reassembly
1. INSTALL INPUT SHAFT OIL SEAL RING (a) Compress a new input shaft oil seal ring from both sides to reduce dimension A. Dimension A: 5 mm (0.197 in.) (b) Coat the oil seal ring with ATF and install it to the input shaft. NOTICE: Do not expand the end gap of the oil seal ring too much. ...

Diagnosis system
1. CHECK DLC3 The vehicle's ECU uses ISO 15765-4 for communication protocol. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format. NOTICE: *: Before measuring the resistance, leave the vehicle as is for at least 1 minute and do ...

Pressure Sensor Circuit
DTC B1423/23 Pressure Sensor Circuit DESCRIPTION This DTC is output when refrigerant pressure on the high pressure side is extremely low (0.19 MPa (2.0 kgf/cm2, 28 psi) or less) or extremely high (3.14 MPa (32.0 kgf/cm2, 455 psi) or more). The pressure sensor, which is installed on the pipe ...