Active Roll Bar Precautions; Active Roll Bar Operational Conditions; Warning Message - Lexus LC500 Manual

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Before operating
A
After operating
B

Active roll bar precautions

Before scrapping your vehicle, make
sure to contact your Lexus dealer.
If the active roll bar operates when the
soft top roof is opened, the soft top roof
cannot be closed.
The active roll bar cannot be reused once
it has operated. Have it replaced by your
Lexus dealer.

Active roll bar operational conditions

The active roll bar operate regardless of
the opening/closing state of the soft top
roof.
The active roll bar will operates in the
event of an impact that exceeds the set
threshold level (the level of force corre-
sponding to an approximately 12 - 18
mph [20 - 30 km/h] frontal collision with
a fixed wall that does not move or
deform, or the impact force produced by
an approximately 3300 lb. [1500 kg]
vehicle colliding with the vehicle cabin
from a direction perpendicular to the
vehicle orientation at an approximate
1-1. For safe use
speed of 12 - 18 mph [20 - 30 km/h]).
However, this threshold velocity will be
considerably higher in the following situa-
tions:
• If the vehicle strikes an object, such as a
parked vehicle or sign pole, which can
move or deform on impact
• If the vehicle is involved in an underride
collision, such as a collision in which the
front of the vehicle underrides, or goes
under, the bed of a truck
The active roll bar operates when the
vehicle rolls over.
The active roll bar may also operate if a
serious impact occurs to the underside of
the vehicle, such as in the following situa-
tion.
• Hitting a curb, edge of pavement or hard
surface
• Falling into or jumping over a deep hole
• Landing hard or falling
• The vehicle is leaning considerably to
one side.
• The vehicle is subjected to certain types
of severe impacts when the vehicle has
slided sideways and collided with a curb,
etc.
Conditions under which the active roll
bar may not operate
The active roll bar does not generally oper-
ate if the vehicle is involved in a rear colli-
sion, or if it is involved in a low-speed frontal
or side collision. But, whenever a collision of
any type causes sufficient forward deceler-
ation of the vehicle, operation of the active
roll bar may occur.
Collision from the rear
Collision from the side to the vehicle
body other than the passenger compart-
ment
Collision from the side at an angle
When the active roll bar operates
The soft top roof cannot be opened or
closed while the active roll bar is operating.

Warning message

If "Active Roll Bar System Malfunction Visit
Your Dealer" is displayed on the multi-
information display, have the vehicle
39
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