Acura MDX (2020 year). Manual in english - page 32

509

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When Driving

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Road Departure Mitigation (RDM) System

Driving

■

Roadway conditions

•

Driving on a snowy or wet roadway (obscured lane marking, vehicle tracks, 
reflected lights, road spray, high contrast).

•

Driving on a road with temporary lane markings.

•

Faint, multiple, or varied lane markings are visible on the roadway due to road 
repairs or old lane markings.

•

The roadway has merging, split, or crossing lines (e.g., such as at an intersection 
or crosswalk).

•

The lane markings are extremely narrow, wide, or changing.

•

The vehicle in front of you is driving near the lane lines.

•

The road is hilly or the vehicle is approaching the crest of a hill.

•

Driving on rough or unpaved roads, or over bumpy surfaces. 

•

When objects on the road (curb, guard rail, pylons, etc.) are recognized as white 
lines (or yellow lines).

•

Driving on roads with double lines.

■

Vehicle conditions

•

Headlight lenses are dirty or the headlights are not properly adjusted.

•

The outside of the windshield is streaked or blocked by dirt, mud, leaves, wet 
snow, etc.

•

The inside of the windshield is fogged.

•

The camera temperature gets too high.

•

An abnormal tire or wheel condition (wrong sized, varied size or construction, 
improperly inflated, compact spare tire

*

, etc.).

•

The vehicle is tilted due to a heavy load or suspension modifications.

•

When tire chains are installed.

•

The vehicle is towing a trailer.

* Not available on all models

510

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When Driving

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Lane 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 vehicle is detected drifting out of its lane.

1

Lane Keeping Assist System (LKAS)

Important Safety Reminders

The LKAS is for your convenience only. It is not a 
substitute for your vehicle control. The system does 
not work if you take your hands off the steering 
wheel or fail to steer the vehicle.

2

Multi-Information Display Warning and 
Information Messages

 P. 115

Do not place objects on the instrument panel. 
Objects may reflect on the windshield and prevent 
correct detection of the traffic lanes.

The LKAS only alerts you when lane drift is detected 
without a turn signal in use. The LKAS may not detect 
all lane markings or lane departures; accuracy will 
vary based on weather, speed, and 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. 516

The LKAS may not function as designed while driving 
in frequent stop and go traffic, or on roads with 
sharp curves.

You can read about handling information for the 
camera equipped with this system.

2

Front Sensor Camera

 P. 487

When you operate the turn signals to change lanes, the system is suspended, and 
resumes after the signals are off.
If you make a lane change without operating the turn signals, the LKAS alerts 
activate, and torque is applied to the steering.

■

Front Sensor 

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.

Continued

511

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When Driving

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Lane Keeping Assist System (LKAS)

Driving

Provides assistance to keep the vehicle in the center of the lane. When the vehicle 
nears a white or yellow line, steering force of the electric power steering will become 
stronger.

When the vehicle enters the warning area, the LKAS alerts you with slight steering 
wheel vibration as well as a warning display.

■

Lane Keep Support Function

1

Lane Keeping Assist System (LKAS)

When it fails to detect lanes, the system will 
temporarily be canceled. When a lane is detected, the 
system will recover automatically.

■

Lane Departure Warning Function

Warning Area

Warning Area

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When Driving

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Lane Keeping Assist System (LKAS)

512

Driving

The system can be used when the following conditions are met.

•

The lane in which you are driving has detectable lane markers on both sides, and 
your vehicle is in the center of the lane.

•

The vehicle is traveling between about 45 and 90 mph (72 and 145 km/h).

•

You are driving 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.

■

How to activate the system

1.

Press the 

MAIN

 button.

u

The LKAS is on in the MID.
The system is ready to use.

2.

Press the LKAS button.

u

Lane outlines appear on the MID.
The system is activated.

■

When the System can be Used

1

When the System can be Used

If the vehicle drifts toward either left or right lane line 
due to the system applying torque, turn off the LKAS 
and have your vehicle checked by a dealer.

MAIN

 Button

LKAS Button

Continued

513

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When Driving

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Lane Keeping Assist System (LKAS)

Driving

3.

Keep your vehicle near the center of the 
lane while driving.

u

The dotted outer lines change to solid 
ones once the system starts operating 
after detecting the left and right lane 
markings.

To cancel the LKAS:
Press the 

MAIN

 or LKAS button.

The LKAS is turned off every time you stop the 
engine, even if you turned it on the last time 
you drove the vehicle.

■

To Cancel

1

To Cancel

Pressing the 

MAIN

 button also turns ACC with Low 

Speed Follow on and off.

MAIN

 Button

LKAS Button

514

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When Driving

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Lane Keeping Assist System (LKAS)

Driving

■

The system operation is suspended if 
you:

•

Set the wipers to continuous operation.

u

Turning the wipers off resumes the 
LKAS.

•

Set the wiper switch to 

AUTO

 and the 

wipers operate continuously.

u

The LKAS resumes when the wipers stop 
or operate intermittently.

•

Decrease the vehicle speed to about 40 
mph (64 km/h) or less.

u

Increasing the vehicle speed to about 45 
mph (72 km/h) or more resumes the 
LKAS.

•

Depress the brake pedal.

u

The LKAS resumes and starts detecting 
the lane lines again once you release the 
brake pedal.

When the LKAS is suspended, 
the lane lines on the MID 
change to contour lines, and the 
beeper sounds (if activated).

Models with automatic intermittent wipers

All models

515

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When Driving

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Lane Keeping Assist System (LKAS)

Continued

Driving

■

The LKAS may automatically be suspended when:

•

The system fails to detect lane lines.

•

The steering wheel is quickly turned.

•

You fail to steer the vehicle.

•

Driving through a sharp curve.

•

Driving at a speed in excess of approximately 90 mph (145 km/h).

Once these conditions no longer exist, the LKAS automatically resumes.

■

The LKAS may automatically be canceled when:

•

The camera temperature gets extremely high or low.

•

The camera behind the rearview mirror, or the area around the camera, including 
the windshield, gets dirty.

•

The ABS or VSA

®

 system engages.

The beeper sounds if the LKAS is automatically canceled.

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When Driving

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Lane Keeping Assist System (LKAS)

Driving

The system may not detect lane markings and therefore may not keep the vehicle in 
the middle of a lane under certain conditions, including the following:

■

Environmental conditions

•

Driving in bad weather (rain, fog, snow, etc.).

•

Sudden changes between light and dark, such as an entrance or exit of a tunnel.

•

There is little contrast between lane lines and the roadway surface.

•

Driving into low sunlight (e.g., at dawn or dusk).

•

Strong light is reflected onto the roadway.

•

Driving in the shadows of trees, buildings, etc.

•

Shadows of adjacent objects are parallel to lane markings.

•

Roadway objects or structures are misinterpreted as lane markers.

•

Reflections on the interior of the windshield.

•

Driving at night or in a dark condition such as a tunnel.

■

LKAS Conditions and Limitations

517

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When Driving

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Lane Keeping Assist System (LKAS)

Driving

■

Roadway conditions

•

Driving on a snowy or wet roadway (obscured lane marking, vehicle tracks, 
reflected lights, road spray, high contrast).

•

Driving on a road with temporary lane markings.

•

Faint, multiple, or varied lane markings are visible on the roadway due to road 
repairs or old lane markings.

•

The roadway has merging, split, or crossing lines (e.g., such as at an intersection 
or crosswalk).

•

The lane markings are extremely narrow, wide, or changing.

•

The vehicle in front of you is driving near the lane lines.

•

The road is hilly or the vehicle is approaching the crest of a hill.

•

Driving on rough or unpaved roads, or over bumpy surfaces. 

•

When objects on the road (curb, guard rail, pylons, etc.) are recognized as white 
lines (or yellow lines).

•

Driving on roads with double lines.

■

Vehicle conditions

•

Headlight lenses are dirty or the headlights are not properly adjusted.

•

The outside of the windshield is streaked or blocked by dirt, mud, leaves, wet 
snow, etc.

•

The inside of the windshield is fogged.

•

The camera temperature gets too high.

•

An abnormal tire or wheel condition (wrong sized, varied size or construction, 
improperly inflated, compact spare tire

*

, etc.).

•

The vehicle is tilted due to a heavy load or suspension modifications.

•

The vehicle is towing a trailer.

* Not available on all models

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When Driving

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Vehicle Stability Assist

®

 (VSA

®

), aka Electronic Stability Control (ESC), System

Driving

Vehicle Stability Assist

®

 (VSA

®

), aka Electronic 

Stability Control (ESC), System

VSA

®

 helps to stabilize the vehicle during cornering if the vehicle turns more or less 

than what was intended. It also assists in maintaining traction on slippery surfaces. 
It does so by regulating engine output and selectively applying the brakes.

When VSA

®

 activates, you may notice that the 

engine does not respond to the accelerator. 
You may also notice some noise from the 
hydraulic system. You will also see the 
indicator blink.

■

VSA

®

 Operation

1

Vehicle Stability Assist

®

 (VSA

®

), aka Electronic Stability Control 

(ESC), System

The VSA

®

 may not function properly if tire type and 

size are mixed. Make sure to use the same size and 
type of tire, and the air pressures as specified.

When the VSA

®

 system indicator comes on and stays 

on while driving, there may be a problem with the 
system. While this may not interfere with normal 
driving, have your vehicle checked by a dealer 
immediately.

VSA

®

 cannot enhance stability in all driving situations 

and does not control the entire braking system. You 
still need to drive and corner at speeds appropriate 
for the conditions and always leave a sufficient 
margin of safety.

The main function of the VSA

®

 system is generally 

known as Electronic Stability Control (ESC). The 
system also includes a traction control function.

VSA

®

 System 

Indicator

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When Driving

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Vehicle Stability Assist

®

 (VSA

®

), aka Electronic Stability Control (ESC), System

Driving

This button is on the driver side control panel. 
To partially disable VSA

®

 functionality/

features, press and hold it until you hear a 
beep.

Your vehicle will have normal braking and 
cornering ability, but traction control function 
will be less effective.

To restore VSA

®

 functionality/features, press 

the  

(VSA

®

 OFF) button until you hear a 

beep.

VSA

®

 is turned on every time you start the 

engine, even if you turned it off the last time 
you drove the vehicle.

■

VSA

®

 On and Off

1

Vehicle Stability Assist

®

 (VSA

®

), aka Electronic Stability Control 

(ESC), System

In certain unusual conditions when your vehicle gets 
stuck in shallow mud or fresh snow, it may be easier 
to free it with the VSA

®

 temporarily switched off.

When the 

 button is pressed, the traction control 

function becomes less effective. This allows for the 
wheels to spin more freely at low speed. You should 
only attempt to free your vehicle with the VSA

®

 off if 

you are not able to free it when the VSA

®

 is on.

Immediately after freeing your vehicle, be sure to 
switch VSA

®

 on again. We do not recommend driving 

your vehicle with the VSA

®

 system switched off.

You may hear a motor sound coming from the 
engine compartment while system checks are being 
performed immediately after starting the engine or 
while driving. This is normal.

VSA

®

 OFF Indicator

520

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When Driving

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Agile Handling Assist

Driving

Agile Handling Assist

Lightly brakes each of the front and rear wheels, as needed, when you turn the 
steering wheel, and helps support the vehicle’s stability and performance during 
cornering.

1

Agile Handling Assist

The agile handling assist cannot enhance stability in 
all driving situations. You still need to drive and 
corner at speeds appropriate for the conditions and 
always leave a sufficient margin of safety.

When the VSA

®

 system indicator comes on and stays 

on while driving, the agile handling assist does not 
activate.

You may hear a sound coming from the engine 
compartment while the agile handling assist is 
activated. This is normal.

521

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When Driving

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Super Handling-All Wheel Drive

TM

 (SH-AWD

®

)

*

Driving

Super Handling-All Wheel Drive

TM

 (SH-AWD

®

)

*

The system controls and transfers varying amounts of engine torque to each wheel 
in accordance with the driving conditions.

SH-AWD

®

 helps to enhance driving stability, and lets you handle situations like 

slippery surfaces, such as on wet, icy, or snowy roads, better than when driving with 
two wheel drive. However, the system does not help to enhance braking. Be 
precautious about the following:

•

It is still your responsibility to drive safely when you steer, accelerate, and apply 
brakes.

•

Leave a sufficient margin when braking on slippery surfaces.

1

Super Handling-All Wheel Drive

TM

 (SH-AWD

®

)

*

The SH-AWD

®

 system may not function properly if 

tire type and size are mixed.
Make sure to use the same size and type of tire, and 
the air pressures as specified.

2

Tire and Wheel Replacement

 P. 608

Do not continuously spin the front tires of your 
vehicle. Continuously spinning the front tires can 
cause damage to the transmission and SH-AWD

®

 

unit.

If the 

SH-AWD

 indicator blinks while driving, it 

indicates the differential temperature is too high. If 
this happens, pull to the side of the road when it is 
safe, change the gear position to 

(

P

, and idle the 

engine until the indicator goes out.

* Not available on all models

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When Driving

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Tire Pressure Monitoring System (TPMS) with Tire Fill Assist

Driving

Tire Pressure Monitoring System (TPMS) with Tire 
Fill Assist

Monitors the tire pressure while you are 
driving. If your vehicle’s tire pressure becomes 
significantly low, the low tire pressure/TPMS 
indicator comes on and a message appears on 
the MID.

1

Tire Pressure Monitoring System (TPMS) with Tire Fill Assist

Conditions such as low ambient temperature and 
altitude change directly affect tire pressure and can 
trigger the low tire pressure/TPMS indicator to come 
on.

2

If the Low Tire Pressure/TPMS Indicator 
Comes On or Blinks

 P. 660

Tire pressure checked and inflated in:

•

Warm weather can become under-inflated in 
colder weather.

•

Cold weather can become over-inflated in warmer 
weather.

The low tire pressure/TPMS indicator will not come 
on as a result of over inflation.

The TPMS audibly and visually informs you of 
changes in tire pressure of the individual tire that you 
are adjusting using audible and visual indications.

If a change in tire pressure has been significant, the 
system beeps and the hazard lights flash continuously 
for five seconds when the specified tire pressure is 
reached. Stop filling the tire.

Low Tire Pressure/
TPMS Indicator

523

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When Driving

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Tire Pressure Monitoring System (TPMS) with Tire Fill Assist

Driving

To select the tire pressure monitor, set the power 
mode to ON, and roll the multi-function 
steering-wheel controls until you see the tire 
pressure screen.

The pressure for each tire is displayed in psi 
(U.S.) or kPa (Canada).

Tire Pressures Low

 is displayed when a tire 

has significantly low pressure. The specific tire 
is displayed on the screen.

■

Tire Pressure Monitor

1

Tire Pressure Monitor

The pressure displayed on the MID can be slightly 
different from the actual pressure as measured by a 
gauge. If there is a significant difference between the 
two values, or if the low tire pressure/TPMS indicator 
and the message on the MID do not go off after you 
have inflated the tire to the specified pressure, have 
the system checked by a dealer.

Tire Pressure Monitor Problem

 may appear if you 

drive with the compact spare tire

*

, or there is a 

problem with the TPMS.

* Not available on all models

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When Driving

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Tire Pressure Monitoring System (TPMS) - Required Federal Explanation

Driving

Tire Pressure Monitoring System (TPMS) - Required 
Federal Explanation

Each tire, including the spare (if provided), should be checked 
monthly when cold and inflated to the inflation pressure 
recommended by the vehicle manufacturer on the vehicle placard 
or tire inflation pressure label.

(If your vehicle has tires of a different size than the size indicated 
on the vehicle placard or tire inflation pressure label, you should 
determine the proper tire inflation pressure for those tires.)

As an added safety feature, your vehicle has been equipped with 
a tire pressure monitoring system (TPMS) that illuminates a low 
tire pressure telltale 

when one or more of your tires is significantly under-inflated.

Accordingly, when the low tire pressure telltale illuminates, you 
should stop and check your tires as soon as possible, and inflate 
them to the proper pressure.

Driving on a significantly under-inflated tire causes the tire to 
overheat and can lead to tire failure. Under-inflation also reduces 
fuel efficiency and tire tread life, and may affect the vehicle’s 
handling and stopping ability.