2015 Acura RLX Owner's Manual

uuWhen Driving uCruise Control
*
352Driving
Increase or decrease the vehicle speed using the RES/+/SET/– switch on the steering
wheel.
• Each time you press the switch up or down, the vehicle speed is increased or
decreased by about 1 mph (1.6 km/h).
• If you keep the switch pressed up or down, the vehicle speed increases or
decreases until you release it. This speed is then set.
To cancel cruise control, do any of the
following:
•Press the CANCEL button.
• Press the CRUISE button.
• Depress the brake pedal.
The CRUISE CONTROL indicator goes off.■
To Adjust the Vehicle Speed
1To Adjust the Vehicle Speed
You can set the vehicle speed pressing the RES/+/
SET/– switch down on the steering wheel when
adjusting the speed with the accelerator and brake
pedals.
■
To Cancel
To decrease speedTo increase speed
1 To Cancel
Resuming the prior set speed:
After cruise control has been canceled, you can still
resume the prior set speed by pressing the RES/+ /
SET/– switch up while driving at a speed of at least
25 mph (40 km/h) or more.
You cannot set or resume in the following situations:•When vehicle speed is less than 25 mph (40 km/h)•When the CRUISE button is turned off
At vehicle speeds of 22 mph (35 km/h) or less, cruise
control is canceled automatically.
CRUISE ButtonCANCEL Button

353
uuWhen Driving uAdaptive Cruise Control (ACC) with Low Speed Follow (LSF)
*
Continued
Driving
Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)
*
Helps maintain a constant vehicle speed and a set following distance behind a
vehicle detected ahead of yours and, if the detected vehicle slows to a stop,
decelerates and stops your vehicle, without you having to keep your foot on the
brake or the accelerator.
1Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)
*
3
WARNING
Improper use of ACC with LSF can lead to a
crash.
Use ACC with LSF only when driving on
expressways or freeways and in good
weather conditions.
3
WARNING
ACC with LSF has limited braking
capability and may not stop your vehicle
in time to avoid a collision with a vehicle
that quickly stops in front of you.
Always be prepared to apply the brake
pedal if the conditions require.
3
WARNING
Exiting a vehicle that has been stopped
while the ACC with LSF system is operating
can result in the vehicle moving without
operator control.A vehicle that moves without operator
control can cause a crash, resulting in
serious injury or death.Never exit a vehicle when the vehicle is
stopped by ACC with LSF.
* Not available on all models

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

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355
uuWhen Driving uAdaptive Cruise Control (ACC) with Low Speed Follow (LSF)
*
Driving
When driving at 25 mph (40 km/h) or above: Take your foot off the pedal and
press down the RES/+/SET/– switch when you reach the desired speed. The moment
you release the switch, the set speed is fixed, and ACC with LSF begins.
When driving at slower than 25 mph (40 km/h): You can set the vehicle speed
only when there is a vehicle detected ahead of you. If the vehicle is moving and the
brake pedal is not depressed, pressing the switch fixes the set speed to 25 mph (40
km/h) regardless of current vehicle speed. If the vehicle is stationary, you can set the
vehicle speed even with the brake pedal depressed. When ACC with LSF starts operating, the
vehicle icon, distance bars and set speed
appear on the multi-information display. ■
To Set the Vehicle Speed
1Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)
*
When the MAIN button is pressed, ACC with LSF and
Lane Keeping Assist System (LKAS) are both turned on
or off.
Do not use ACC with LSF under these conditions:•In poor visibility (e.g., bad weather, such as rain,
fog, and snow).•When you must slow down and speed up
repeatedly.•On winding roads.•When you enter a toll gate, interchange, service
area, parking area, etc. In these areas, there is no
vehicle ahead of you, but ACC with LSF would still
try to accelerate to your set speed.•On a slippery road (for example a road covered
with ice or snow).•When a spare tire
* is installed.
•When going down a steep hill where the engine
braking does not work sufficiently.
When not using ACC with LSF: Turn off adaptive
cruise by pressing the MAIN button. This also will
turn off the Lane Keeping Assist System (LKAS).
1 To Set the Vehicle Speed
You can switch the displayed set speed
measurements on the multi-information display
between mph and km/h.
2 Customized Features P. 102, 263
On when ACC with LSF
begins
Press down and release
RES/+ /SET/− Switch
Set Vehicle Speed
Set Vehicle Distance
* Not available on all models

uuWhen Driving uAdaptive Cruise Control (ACC) with Low Speed Follow (LSF)
*
356Driving
■There is a vehicle ahead
ACC with LSF monitors if a vehicle ahead of you enters the ACC with LSF range. If it
does, the ACC with LSF system maintains or decelerates your vehicle’s set speed in
order to keep the vehicle’s set following distance from the vehicle ahead.2 To Set or Change Following Distance P. 359
When a vehicle whose speed is slower than
your set speed comes in front of you and is
detected by the radar, your vehicle starts to
slow down.
■
When in Operation
1When in Operation
If the vehicle ahead of you slows down abruptly, or if
another vehicle cuts in front of you, the beeper
sounds and a message appears on the multi-
information display to alert you to brake.
Depress the brake pedal, and keep an appropriate
distance from the vehicle ahead.
Even if the distance between your vehicle and the
vehicle ahead is short, ACC with LSF may start
accelerating your vehicle under the following
circumstances:•The vehicle ahead of you is going at almost the
same speed as, or faster than, your vehicle.•A vehicle that cuts in front of you is going faster than
your vehicle, gradually distancing itself from you.
If you do not want to hear a beep when the system
detects a vehicle, or when the vehicle goes out of the
ACC with LSF range, you can change the pre-running
detect car beep setting. 2 Customized Features P. 102, 263
Beep
ACC with LSF Range: 394 ft. (120 m)
A vehicle icon appears on the
multi-information display

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357
uuWhen Driving uAdaptive Cruise Control (ACC) with Low Speed Follow (LSF)
*
Driving
■There is no vehicle ahead
When driving at 22 mph (35 km/h) or above:
Your vehicle maintains the set speed without
having to keep your foot on the brake or
accelerator pedal.
If there previously was a vehicle detected
ahead that kept your vehicle from traveling at
the set speed, ACC with LSF accelerates your
vehicle to the set speed, and then maintains it.
When driving under 22 mph (35 km/h) and no
vehicle is detected ahead: ACC with LSF
automatically cancels. The beeper sounds once.
■When you depress the accelerator pedal
You can temporarily increase the vehicle speed. In this case, there is no audible or
visual alert even if a vehicle is in the ACC with LSF range.
ACC with LSF stays on unless you cancel it. Once you release the accelerator pedal,
the system resumes the set speed.■A vehicle detected ahead is within ACC with LSF range and slows to a stops
Your vehicle also stops, automatically. The
Stopped message appears on the multi-
information display.
When the vehicle ahead of you starts again,
the vehicle icon on the multi-information
display blinks. If you press the RES/+/SET/–
switch up or down, or depress the accelerator
pedal, ACC with LSF operates again within the
prior set speed.A vehicle icon with dotted-line
contour appears on the multi-
information display
1 When in Operation
Limitations
You may need to use the brake to maintain a safe
distance when using ACC with LSF. Additionally,
ACC with LSF may not work properly when:•A vehicle ahead of you is parked when your vehicle
is moving.•Motorcycles or other small vehicles are ahead of
you.•A vehicle cuts in front of you at a short distance.
ACC with LSF may momentarily apply brakes or
sound a beep if there is a vehicle, or even a building,
next to you if:•You make a sudden turn or drive on a narrow road.•You abruptly move the steering wheel.•You are in an unusual position within your lane.
When your vehicle stops automatically because a
vehicle detected ahead of you has stopped, the
distance between the two vehicles will vary based on
the ACC with LSF distance setting, as follows:
Short: 11.5 ft (3.5 m)
Middle: 14.1 ft (4.3 m)
Long, Extra Long: 16.4 ft (5.0 m) 2 To Set or Change Following Distance P. 359

uuWhen Driving uAdaptive Cruise Control (ACC) with Low Speed Follow (LSF)
*
358Driving
Increase or decrease the vehicle speed using the RES/+/SET/– switch on the steering
wheel.
• Each time you press the switch up or down, the vehicle speed is increased or
decreased by about 1 mph or 1 km/h accordingly.
• If you keep the switch pressed up or down, the vehicle speed increases or
decreases by about 5 mp h or 5 km/h accordingly.■
To Adjust the Vehicle Speed
1To Adjust the Vehicle Speed
If a vehicle ahead is going at a speed slower than your
increased set speed, ACC with LSF may not
accelerate your vehicle. This is to maintain the set
following distance between your vehicle and the
vehicle ahead.
To increase speedTo decrease speed

359
uuWhen Driving uAdaptive Cruise Control (ACC) with Low Speed Follow (LSF)
*
Continued
Driving
Press the (distance) button to change the
ACC with LSF following distance.
Each time you press the button, the following
distance (the distance behind a vehicle
detected ahead of you) setting cycles through
short, middle, long, and extra long following
distances.
Determine the most appropriate following
distance setting based on your specific driving
conditions. Be sure to adhere to any following
distance requirements set by local regulation.
■
To Set or Change Following Distance
Distance Button