2015 Acura RLX sensor

336
uuBefore Driving uDriving Preparation
Driving
• Be sure items placed on the floor behind the front seats cannot roll under the
seats.
u They can interfere with the driver’s ability to operate the pedals, the operation
of the seats, or the operation of the sensors under the seats.
• Everyone in the vehicle must fasten their seat belt.
2 Fastening a Seat Belt P. 33
•Make sure that the indicators in the instrument panel come on when you start the
vehicle, and go off soon after.
u Always have a dealer check the vehicle if a problem is indicated.
2 Indicators P. 68

uuWhen Driving uAdaptive Cruise Control (ACC) with Low Speed Follow (LSF)
*
354Driving
1Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)
*
Important Reminder
As with any system, there are limits to ACC with LSF.
Use the brake pedal whenever necessary, and always
keep a safe distance between your vehicle and other
vehicles.
The radar sensor for ACC with LSF is shared with the
collision mitigation braking system
TM (CMBS
TM).
2 Collision Mitigation Braking SystemTM
(CMBS
TM)* P. 392
When to use■Vehicle speed for ACC with LSF: A vehicle is
detected ahead within ACC with LSF range –
ACC with LSF operates at any vehicle speed.
No vehicle is detected within ACC with LSF
range – ACC with LSF operates at the speed of 25
mph (40km/h) or above.■Shift position for ACC with LSF: In
( D. The radar sensor is in the front grille.
How to use■Press the
MAIN button on
the steering wheel. ACC (green) is on in the
instrument panel.
ACC with LSF is ready to
use.
* Not available on all models

Continued
361
uuWhen Driving uAdaptive Cruise Control (ACC) with Low Speed Follow (LSF)
*
Driving
To cancel ACC with LSF, do any of the
following:
• Press the CANCEL button.
• Press the MAIN button.
u ACC with LSF indicator goes off.
• Depress the brake pedal.
u When the LSF function has stopped the
vehicle, you cannot cancel ACC with LSF
by depressing the brake pedal.
■Automatic cancellation
The beeper sounds and a message appears on the multi-information display when
ACC with LSF is automatically canceled. Any of these conditions may cause the ACC
with LSF to automatically cancel:
• Your vehicle speed slows to 22 mph (35 km/h) or below when a detected vehicle
goes out of the ACC with LSF range.
• Bad weather (rain, fog, snow, etc.)
• When the radar sensor in the front grille gets dirty.
• The vehicle ahead of you cannot be detected.
• An abnormal tire condition is detected, or the tires are skidding.
• Driving on a mountainous road, or driving off road for extended periods.
• Abrupt steering wheel movement.
• When the ABS, VSA ® or CMBS
TM is activated.
• When the ABS or VSA ® system indicator comes on.
• When the vehicle is stopped on a very steep slope.
• When you manually apply the parking brake.
• When the detected vehicle within the ACC with LSF range is too close to your
vehicle.
■
To Cancel
1To Cancel
Resuming the prior set speed: After you have
canceled ACC with LSF, you can resume the prior set
speed while it is still displayed. Press the RES/+/SET/
– switch up when driving at a speed of at least 25
mph (40 km/h) or more.
Even if your vehicle speed has gone down to less than
25 mph (40 km/h), you can still resume the prior set
speed when ACC with LSF detects a vehicle ahead of
you.
You cannot set or resume in the following situations:•When the vehicle speed is less than 25 mph
(40km/h) and there is no vehicle detected in front
of your vehicle•When the MAIN button is turned off
CANCEL
ButtonMAIN
Button
1 Automatic cancellation
Even though ACC with LSF has been automatically
canceled, you can still resume the prior set speed.
Wait until the condition that caused ACC with LSF to
cancel improves, then press the RES/+/SET/– switch
down.

366
uuWhen Driving uForward Collision Warning (FCW)
*
Driving
FCW may not activate or may not detect a vehicle in front of your vehicle, and may
activate even when you are aware of a vehicle ahead of you, or when there is no
vehicle ahead, under the following conditions.■
FCW Limitations
Condition
●The distance between your vehicle and the vehicle ahead of you is too short.●A vehicle cuts in front of you at a slow speed, and it brakes suddenly.●A vehicle suddenly crosses in front of you.●When either your vehicle or the vehicle ahead of you accelerates rapidly.●The vehicle ahead of you is a motorcycle, a small vehicle, or a unique vehicle such as a tractor.●When you drive off-road or on a mountain road, or curved and winding road for an extended period that makes it difficult for the sensor/camera to
properly detect a vehicle in front of you.●When there are pedestrians or animals in front of your vehicle.●When you drive in bad weather (rain, fog, etc.).●A heavy load in the rear or modifications to the suspension tilts your vehicle.●An abnormal tire condition is detected (wrong tire size, flat tire, etc.).●When the windshield is blocked by dirt, mud, leaves, wet snow, etc.●When the temperature inside the system is high.●A sudden change between light and dark such as an entrance or exit of a tunnel.●You drive into the sunlight (e.g. at dawn or dusk).●When the windshield is dirty or cloudy.●When streetlight s are perceived as the taillight of a vehicle in front of yours.●When driving at night, the vehicle ahead of you is running with either taillight bulb burned out.●When you drive in the shadows of trees, buildings, etc.

379
uuWhen Driving uBlind Spot Information (BSI) System
*
Continued
Driving
Blind Spot Information (BSI) System
*
Is designed to detect vehicles in specified alert zones adjacent to your vehicle,
particularly in harder to see areas commonly known as “blind spots.”
When the system detects vehicles approaching from behind in adjacent lanes, the
appropriate indicator comes on for a few seconds, providing assistance when you
change lanes.■How the system works
1Blind Spot Information (BSI) System
*
Important Safety Reminder
Like all assistance systems, BSI has limitations. Over
reliance on BSI may result in a collision.
The system is for your convenience only. Even if an
object is within the alert zone, the following
situations may occur.•The BSI alert indi cator may not come on due to
obstruction (splashes, etc.) even without the Blind
Spot Not Available multi-information display
appearing.•The BSI alert indicator may come on even with the
message appearing.
The BSI alert indicator may not come on under the
following conditions:•A vehicle does not stay in the alert zone for more
than two seconds.•A vehicle is parked in a side lane.•The speed difference between your vehicle and the
vehicle you are passing is greater than 6 mph (10
km/h).•An object not detected by the radar sensors
approaches or passes your vehicle.
3
WARNING
Failure to visually confirm that it is safe to
change lanes before doing so may result in
a crash and serious injury or death.
Do not rely only on the blind spot
information system when changing lanes.
Always look in your mirrors, to either side
of your vehicle, and behind you for other
vehicles before changing lanes.
●The shift lever is in
( D.
●Your vehicle speed is
between 20 mph (32 km/h)
and 100 mph (160 km/h)
Alert zone range
A: Approx. 1.6 ft. (0.5 m)
B: Approx. 10 ft. (3 m)
C: Approx. 10 ft. (3 m) Radar Sensors:
underneath the
rear bumper
corners
Alert Zone
A
B
C
* Not available on all models

uuWhen Driving uBlind Spot Information (BSI) System
*
380Driving
■When the system detects a vehicle
1Blind Spot Information (BSI) System
*
You can change the setting for BSI.
2 Customized Features P. 102, 263
BSI may be adversely affected when:•Objects (guard rails, poles, trees, etc,.) are
detected.•An object that does not reflect radio waves well,
such as a motorcycle, is in the alert zone.•Driving on a curved road.•A vehicle is moving from a far lane to the adjacent
lane.•The system picks up external electrical interference.•The rear bumper or the sensors have been improperly
repaired or the rear bumper has been deformed.•The orientation of the sensors has been changed.•In bad weather (Heavy rain, snow, and fog).
For proper BSI operation:•Always keep the rear bumper corner area clean.•Do not cover the rear bumper corner area with
labels or stickers of any kind.•Take your vehicle to a dealer if you need the rear
bumper corner area or the radar sensors to be repaired,
or the rear bumper corner area is strongly impacted.
Comes on when:●A vehicle enters the alert zone from behind
to overtake you with a speed difference of
no more than 31 mph (50 km/h) from your
vehicle.●You pass a vehicle with a speed difference
of no more than 12 mph (20 km/h).
BSI Alert Indicator: Located near the outside
rearview mirror on both sides.
Blinks and a beeper sounds when:
You move the turn signal lever in the direction
of the detected vehicle. The beeper sounds
three times. Comes On
Blinks
* Not available on all models

392
uuBraking uCollision Mitigation Braking System
TM (CMBS
TM)*
Driving
Collision Mitigation Braking System
TM
(CMBS
TM
)*
Can assist you when there is a possibility of your vehicle colliding with a vehicle
detected in front of yours. The CMBS
TM is designed to alert you when a potential
collision is determined, as well as to reduce your vehicle speed when a collision is
deemed unavoidable to help minimize collision severity.
■How the system works
1 Collision Mitigation Braking System
TM (CMBS
TM)*
Important Safety Reminder
The CMBS
TM is designed to reduce the severity of an
unavoidable collision. It does not prevent collision nor
stop the vehicle automatically. It is still your
responsibility to operate the brake pedal and steering
wheel appropriately according to the driving
conditions.
The CMBSTM may not activate or may not detect a
vehicle in front of your vehicle under the following
conditions:
•The distance between your vehicle and the vehicle
ahead of you is too short.•A vehicle cuts in front of you at a slow speed, and
it brakes suddenly.•When you accelerate rapidly and approach the
vehicle ahead of you at high speed.•The vehicle ahead of you is a motorcycle or other
small vehicle.•A vehicle suddenly crosses in front of you.•When you drive on a curved or winding road that
makes it difficult for the sensor to properly detect a
vehicle in front of you.•When there are pedestrians or animals in front of
your vehicle.
A radar sensor starts to monitor if there is a vehicle in front of you when your
vehicle speed is above 10 mph (15 km/h).
The radar sensor is
in the front grille.
The CMBS
TM activates when the speed difference between your vehicle and a
vehicle detected in front of you becomes more than 10 mph (15 km/h) with a
chance of a collision.
* Not available on all models

394
uuBraking uCollision Mitigation Braking System
TM (CMBS
TM)*
Driving
The system has four alert stages for a possible collision. However, depending on the circumstances, the CMBS
TM may not go through all of
the stages before initiating the last stage.
■
Collision Alert Stages
Distance between vehicles
CMBS
TM
The radar sensor detects a vehicle
E-pretensioner
Audible & Visual WARNINGS
Braking
Stage one
There is a risk of a
collision with the
vehicle ahead of
you.
—
You can change the distance
between vehicles at which visual
alerts will display (Long /Normal /
Short ).
2List of customizable options
P. 105, 270
When your setting is:●Long : Visual alerts flash twice at
Long distance. When the Short
distance is reached, visual and
audible alerts are provided.●Normal : Visual alerts flash twice
at the Normal distance. When
the Short distance is reached,
visual and audible alerts are
provided.●Short : Visual and audible alerts
are provided immediately.
—
Stage two
There is a risk of a
collision with the
vehicle ahead of
you.
—
Visual and audible alerts.
—
Your Vehicle Vehicle
Ahead
Normal
Short
LongYour
Vehicle Vehicle
Ahead