LEXUS NX250 350 2023 Owners Manual

EmergencyDrivingStopSystem
EmergencyDrivingStopSystem
The emergency driving stop system is a system which automatically decelerates
and stops the vehicle within its lane if the driver becomes unable to continue
driving the vehicle, such as if they have suffered a medical emergency, etc.
During LTA (Lane Tracing Assist) control, if the system does not detect driving
operations, such as if the driver is not holding the steering wheel, and determines
the driver is not responsive, the vehicle will be decelerated and stopped within its
current lane to help avoid a collision or reduce the impact of a collision.
WARNING

Summaryofthesystem
Operation of this system is separated into 4 control states. Through control state
"warning phase 1" and "warning phase 2", the system determines if the driver
is aware and responsive while outputting a warning and controlling the vehicle
speed. If the system determines the driver is not responsive, it will operate in
control state "deceleration stop phase" and "stop hold phase" and decelerate andstop the vehicle. It will then operate continuously in "stop hold phase".
INFORMATION

If driving operations, such as holding the steering wheel, are not performed within
a certain amount of time, the system will determine that the driver is not responsive
and enter the deceleration stop phase.
The audio system will be muted until the driver becomes responsive.
When the vehicle is decelerating, the brake lights may illuminate, depending on the road
conditions, etc.
Decelerationstopphase
After entering the deceleration stop phase, a buzzer will sound continuously and a
message will be displayed to warn the driver, and the vehicle will slowly decelerate and stop. After the vehicle stops, the system will enter the stop and hold phase.
Stopholdphase
After the vehicle is stopped, the parking brake will be applied automatically. After
entering the stop and hold phase, the buzzer will continue sounding continuously
and the emergency flashers (hazard lights) will flash to warn other drivers of the emergency.
6-2.Usingthesafedrivingsupportfunctions
4616
Driving support system

Engineoutputrestrictionwhentheacceleratorpedalandbrakepedalaredepressedatthesametime
Purposeofthebrakeoverridesystem
If the accelerator pedal and brake pedal are depressed at the same time, the brakeoverride system may operate and restrain the engine output. A warning message is
displayed on the multi-information display while the system is operating.
WARNINGTo avoid depressing the wrong pedal, become familiar with the location of the brake pedal and accelerator pedal before driving the vehicle.
If the accelerator pedal is mistaken for the brake pedal and depressed, the vehicle may suddenly start off.NOTICEDo not depress the accelerator pedal and brake pedal at the same time while driving, asthis may cause the engine output to be restrained.6-2.Usingthesafedrivingsupportfunctions
462

Suddenstartrestraintcontrol
Suddenstartrestraintcontrol(Drive-StartControl>DSC@)
When the following unusual operation is performed with the accelerator pedal
depressed, the engine output may be restrained.

Reducingimpacttotheoccupantsinacollision
Reducingimpacttopassengersinacollision
Seatbeltpretensioners
When the vehicle is subjected to a severe frontal or side impact or rollover, the
pretensioners retract the seat belts of the front seats and rear outer seats to
securely restrain the occupants.
The pretensioners will not operate in minor frontal or side impacts, or rear impacts.
INFORMATION

SRSairbags
The SRS airbags deploy when the vehicle is subjected to certain types of severe
impact that may cause significant injury to the occupants. The airbags work togeth-
er with the seat belts to help reduce the risk of death or serious injury.
A
SRS driver airbag/front passenger airbag
Help reduce impact to the head and chest of the driver and front passenger
B
SRS knee airbags
Help reduce impact to the driver
C
SRS seat cushion airbags

shown in the system components diagram above. This information includes crash
severity and occupant information. As the airbags deploy, a chemical reaction in
the inflators quickly fills the airbags with non-toxic gas to help restrain the motion of
the occupants.INFORMATION

RWhen the vehicle collides with an object, such as a parked vehicle or sign pole,
which moves or deforms on impact
If the vehicle is involved in an underride collision, such as a collision in which the
front of the vehicle kunderridesy, or goes under, the bed of a truck