148
SIENNA_OM_01999-08001_(U)
3-3. Adjusting the seats
Front seats
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 only)*
*: If equipped
Power seat
Seat position adjustment switch
Seatback angle adjustment switch
Seat cushion (front) angle adjust ment switch (driver’s side only)
Vertical height adjustment switch (driver’s side only)
Lumbar support adjustment switch (driver’s side only)
Adjustment procedure
1
2
3
4
1
2
3
4
5
SIENNA_OM_01999-08001_(U)
2994-5. Using the driving support systems
4
Driving
■Conditions that may trigger the system even if there is no possibility of a
collision
●When there is an object by the roadside at the entrance to a curve
● When passing an oncoming vehicle on a curve
● When driving over a narrow iron bridge
● When there is a metal object on the road surface
● When driving on an uneven road surface
● When passing an oncoming vehicle on a left-turn
● When your vehicle rapidly closes on the vehicle in front
● When a grade separation/interchange, sign, billboard, or other structure
appears to be directly in the vehicle’s line of travel
● When climbing a steep hill or going down a downhill slope causes an over-
head billboard or other metallic structure to appear directly in the vehicle’s
line of travel
● When there are excessive changes in the vehicle height (when it tilts for-
wards or backwards)
● When passing through an electronic toll collection gate (only in countries
with electronic toll collection)
● When the axis of the radar is out of adjustment
● When passing through a tunnel
When the system is activated in the situations described above, there is also
a possibility that the seat belts will retract quickly and the brakes will be
applied with a force greater than normal. When the seat belt is locked in the
retracted position, stop the vehicle in a safe place, release the seat belt and
refasten it.
■ Obstacles not detected
The sensor cannot detect plastic obstacles such as traffic cones. There may
also be occasions when the radar sens or cannot detect pedestrians, animals,
bicycles, motorcycles, trees, or snowdrifts.
■ Situations in which the pre-collis ion system does not function properly
The system may not function effectively in situations such as the following:
● On roads with sharp bends or uneven surfaces
● If a vehicle suddenly moves in front of your vehicle, such as at an intersec-
tion
● If a vehicle suddenly cuts in front of your vehicle, such as when overtaking
● In inclement weather such as heavy rain, fog, snow or sand storms
● When your vehicle is skidding such as the VSC system off
● When an extreme change in vehicle height occurs
● When the axis of the radar is out of adjustment
