steering Acura MDX 2017 Repair Manual
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380
uuWhen Driving uShifting
Driving
Use the paddle shifters to change between 1st and 9th gears without removing your 
hands from the steering wheel. The transmiss ion will switch to the sequential mode.
■When the transmission is in (D:
The vehicle will go into the sequential mo de momentarily, and the sequential mode 
gear selection indicator will come on.
Once you start traveling at a constant sp eed, the sequential mode will automatically 
switch off, and the sequential mode gear selection indicator will go off.
Hold the 
(+ paddle shifter for two seconds or push (D button to return to normal 
drive.
■When the transmission is in (S
The vehicle will go into th e sequential mode, and the  M (sequential mode) indicator 
and sequential mode gear selection indicator will come on.
If the vehicle speed increases and the engi ne speed reaches near the tachometer’s 
red zone, the transmission automatica lly shifts up to the next gear.
You can cancel this mode by holding the 
(+ paddle shifter for two seconds or push 
(D button. When the sequential mode is  canceled, the sequential mode indicator 
and sequential mode gear selection indicator go off.
■Sequential Mode
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384
uuWhen Driving uAuto Idle Stop*
Driving
■Auto idle stop m ay not activate when:
• The vehicle is stopped by braking suddenly.
• The steering wheel is operated.
• The fan speed is high.
• Altitude is high.
• The vehicle is repeated ly accelerated and dece lerated at a low speed.
• The climate control system is in use, and  there is a significant difference between 
the set temperature and the actual interior temperature.
• Humidity in the interior is high.
• The rear fan is set to maximum speed.
u Auto Idle Stop may not ac tivate under other conditions when the rear climate 
control system is in use.
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Continued385
uuWhen Driving uAuto Idle Stop*
Driving
• The brake pedal is released (without the  automatic brake hold system activated).
• The accelerator pedal is depressed (with the automatic brake hold system 
activated).
2 Automatic Brake Hold  P. 432
■The engine restarts even if the brake pedal is depressed*1 when:
• The Auto Idle Stop  OFF button is pressed.
• When a steering wheel is operated.
• The gear position is change to 
(R or (S, or when it is change from (N to (D.
• The pressure on the brake pedal is reduced  and the vehicle starts moving while 
stopped on an incline.
• The pressure on the brake pedal is repeat edly applied and released slightly during 
a stop.
• The battery charge becomes low.
• The accelerator pedal is depressed.
• The driver’s seat belt is unlatched.
•  is ON (indicator on).
• The climate control system  is in use, and the difference between the set 
temperature and actual interior  temperature becomes significant.
• The climate control system  is being used to dehumidify the interior.
• The vehicle ahead of you starts again when  your vehicle stops automatically with 
ACC with LSF.
■The Engine Automatically Restarts When:1 The Engine Automatically Restarts When:
•If you are using an elec tronic device during Auto 
Idle Stop, the device may temporarily be turned off 
when the engine restarts.
1 The engine restarts even if the brake pedal is depressed*1 when:
*1: With the automatic brake hold system activated, 
you can release the brake pe dal during Auto Idle Stop 
is in operation.
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387
uuWhen Driving uIntegrated Dynamics System
Driving
Integrated Dynamics System
Modifies the dynamic characte r of the vehicle. There are three modes to select from: 
Comfort,  Normal, and Sport.
Press the  Dynamic Mode  button to select a mode. The mode you have selected 
appears on the MID.
You can customize the mode default setting using the MID.
2 Customized Features  P. 123
Normal
Balanced driving 
performance for most 
driving situations.
Sport
Enhances vehicle response 
feel through decreased 
steering assist, heightened 
throttle response, increased 
SH-AWD
* torque bias, and 
modified active sound 
control. Comfort
Maximizes driver comfort 
through increased steering 
assist.
Dynamic Mode  
Button
* Not available on all models
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Continued391
uuWhen Driving uAdaptive Cruise Control (ACC) with Low Speed Follow (LSF)
Driving
■How to activate the system1Adaptive 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.
ACC with LSF may not work  properly under certain 
conditions. 2 ACC with LSF Conditions and Limitations  
P. 396
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).
Do not use the ACC with LSF under the following 
conditions.
•On roads with heavy traf fic or while driving in 
continuous stop and go traffic.
•On roads with sharp turns.
•On roads with steep downhill sections, as the set 
vehicle speed can be exceeded by coasting. In such 
cases, the ACC with LSF will not apply the brakes to 
maintain the set speed.
•On roads with toll collection facilities or other 
objects between lanes of  traffic, or in parking 
areas, or faci lities with driv e through access.
■Press the MAIN button on 
the steering wheel. ACC
 (green) is on in the 
instrument panel.
ACC with LSF is ready to 
use.
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uuWhen Driving uAdaptive Cruise Control (ACC) with Low Speed Follow (LSF)
398
Driving
Increase or decrease the vehicle speed using the  RES/+/SET/–  switch on the steering 
wheel.
• Each time you press the switch up or do wn, 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 mph or 5 km/h accordingly.
■To Adjust the Vehicle Speed1 To Adjust the Vehicle Speed
If a vehicle detected 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 betwee n your vehicle and the 
vehicle ahead.
To increase speed
To decrease speed
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uuWhen Driving uAdaptive Cruise Control (ACC) with Low Speed Follow (LSF)
402
Driving
■Automatic cancellation
The beeper sounds and a message app ears on the MID when ACC with LSF is 
automatically canceled. Any of these co nditions may cause the ACC with LSF to 
automatically cancel:
• 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.
• When a detected vehicle goes out of th e ACC with LSF range while your vehicle 
is stationary.
• The camera behind the rearview mirror, or the area around the camera, including 
the windshield, gets dirty.
The ACC with LSF automatic cancellation  can be also triggered by the following 
causes. In these cases, the electric park ing brake will be automatically applied.
• The driver’s seat belt is unfastened when the vehicl e is stationary.
• The vehicle stops for mo re than 10 minutes.
• The engine is turned off.
• When trailer stability assist is activated.
2 Trailer Stability Assist  P. 362
1Automatic cancellation
Even though ACC with LSF has been automatically 
canceled, you can still resu me the prior set speed. 
Wait until the condition that caused ACC with LSF to 
cancel improves, then press the  RES/+/SET/–  switch 
up.
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405
uuWhen Driving uRoad Departure Mitigation (RDM) System
Continued
Driving
Road Departure Mitigation (RDM) System
Alerts and helps to assist you when the  system determines a possibility of your 
vehicle unintentionally crossing over detected lane markings.
The front camera behind the rearview mirror 
monitors left and right lane markings (in white 
or yellow). If your vehicle is getting too close 
to detected lane markings without a turn 
signal activated, the system, in addition to a 
visual alert, applies st eering torque and alerts 
you with rapid vibrations on the steering 
wheel, to help you remain within the detected 
lane.
As a visual alert, the  Lane Departure 
message appears on the MID.
If the system determines that its steering input 
is insufficient to keep your vehicle on the 
roadway, it may apply braking. u Braking is applied only when the lane 
markings are solid continuous lines.
The system cancels assisting operations wh en you turn the steering wheel to avoid 
crossing over detected lane markings.
If the system operates several times with out detecting driver response, the system 
beeps to alert you.
■How the System Works
1 Road Departure Mitigation (RDM) System
Important Safety Reminder
Like all assistance systems, the RDM system has 
limitations.
Over-reliance on the RDM system may result in a 
collision. It is always your  responsibility to keep the 
vehicle within your driving lane.
The RDM system only alerts  you when lane drift is 
detected without a turn signal in use. The RDM 
system may not detect all la ne markings or lane or 
roadway departures; accu racy will vary based on 
weather, speed and lane marker condition. It is 
always your responsibilit y to safely operate the 
vehicle and avoid collisions.
You can read about handling information for the 
camera equipped with this system.
2 Front Sensor Camera  P. 388
The RDM system may not wo rk properly or may work 
improperly under the certain conditions: 2 RDM Conditions and Limitations  P. 408
There are times when you may not notice RDM 
functions due to your opera tion of the vehicle, or 
road surface conditions. If the  Lane Departure 
message displays repeated ly and you do not apply 
responsive actions, the sy stem beeps and cancels 
RDM functions.
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uuWhen Driving uRoad Departure Mitigation (RDM) System
406
Driving
The system becomes ready to start sear ching for lane markings when all the 
following conditions are met:
• The vehicle is traveling between about 45 and 90 mph (72 and 145 km/h).
• The vehicle is on a straight  or slightly curved road.
• The turn signals are off.
• The brake pedal is not depressed.
• The wipers are not in continuous operation.
• The vehicle is not accelerating or braking, and the steering wheel is not being 
turned.
• The system makes a determination that the driver is not actively accelerating, 
braking or steering.
■How the System Activates1How the System Activates
The RDM system may automa tically shut off and the 
 indicator comes and stays on.
2 Indicators P. 90
RDM system function can  be impacted when the 
vehicle is:
•Not driven within a traffic lane.
•Driven on the inside edge of a curve, or outside of 
a lane.
•Driven in a narrow lane.
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410
uuWhen Driving uLane Keeping Assist System (LKAS)
Driving
Lane Keeping Assist System (LKAS)
Provides steering input to help keep the vehicle in the middle of a detected lane and 
provides tactile and visual alerts if the ve hicle is detected drifting out of its lane.1Lane Keeping Assist System (LKAS)
Important Safety Reminders
The LKAS is for your convenience only. It is not a 
substitute for your vehicl e control. The system does 
not work if you take y our hands off the steering 
wheel or fail to steer the vehicle.
2 Multi-Information Display Warning and 
Information Messages  P. 113
Do not place objects on the instrument panel. 
Objects may reflect on th e front windshield and 
prevent correct detectio n of the traffic lanes.
LKAS only alerts you when  lane drift is detected 
without a turn signal in use.  LKAS may not detect all 
lane markings or  lane departures; a ccuracy will vary 
based on weather, speed, an d lane marker condition. 
It is always your  responsibility to  safely operate the 
vehicle and avoid collisions.
The LKAS is convenient when it is used on freeways.
The LKAS may not work  properly or may work 
improperly under the certain conditions: 2 LKAS Conditions and Limitations  P. 416
LKAS may not function as  designed on while driving 
in frequent stop and go traf fic, or on roads with 
sharp curves.
You can read about handling information for the 
camera equipped with this system. 2 Front Sensor Camera  P. 388
When you operate the turn signals to chan ge lanes, the system is suspended, and 
resumes after the signals are off.
If you make a lane change without operat ing the turn signals, the LKAS alerts 
activate, and torque is  applied to the steering.
■LKAS camera
Monitors the lane 
lines■Tactile and visual alerts
Rapid vibrations on the steering 
wheel and a warning display alert 
you that the vehicle is drifting out 
of a detected lane.
■Steering input assist
The system applies torque to the steering to  keep the vehicle between the left and 
right lane lines. The applied torque becomes stronger as the vehicle gets closer to 
either of the lane lines.
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