Acura TLX (2021 year). Manual in english - page 29

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Traffic Jam Assist

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

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Traffic Jam Assist will be activated once 
the camera has detected the white 
(yellow) traffic lane lines on either side of 
the lane and the radar sensor and 
camera have detected a vehicle driving 
ahead.
The dotted outer lines change to solid 
ones and a vehicle icon appears on the 
multi-information display.

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Traffic Jam Assist

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When no vehicle is traveling ahead

If the vehicle detected ahead disappears from 
the travel path of your vehicle (for example, it 
changes lanes), Traffic Jam Assist will be 
deactivated temporarily and your vehicle will 
gradually accelerate until it reaches the set 
speed, after which it will maintain that speed.

1

How Traffic Jam Assist Works

If the vehicle detected ahead suddenly slows down, 
or if another vehicle is detected cutting in front of 
yours, a warning buzzer will sound, and a warning in 
the multi-information display and head-up warning

*

 

will appear.

Depress the brake pedal and take direct control of 
steering.

Beep

Head-up Warning

*

The dotted outer lines and a 

vehicle icon with a dotted-line 

contour appear on the multi-

information display.

* Not available on all models

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Traffic Jam Assist

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To cancel Traffic Jam Assist, you can do any of the following:

•

Press the 

 button.

•

Press the LKAS button.

•

When the ACC with Low Speed Follow is deactivated.

■

When Traffic Jam Assist may automatically be suspended when:

The system is temporarily canceled automatically under the following circumstances.

•

The system fails to detect lane lines.

•

The vehicle ahead of you cannot be detected.

•

The steering wheel is turned quickly.

•

You fail to steer the vehicle.

•

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

•

The wipers are set to high.

•

The interval between your vehicle and the one traveling ahead is over 197 feet 
(60m).

Once these conditions no longer exist, the Traffic Jam Assist automatically resumes.

■

Canceling Traffic Jam Assist

1

How Traffic Jam Assist Works

If you are traveling slower than the vehicle detected 
ahead or a vehicle that is detected cutting in front of 
you and the interval between your vehicle and the 
detected vehicle gradually increases, your vehicle will 
continue to follow that vehicle without emitting any 
warning, even if the interval between the vehicle is 
minimal.

1

When Traffic Jam Assist may automatically be suspended when:

You are traveling over 45mph (72km/h).

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When the speed of the vehicle reaches 45mph 

(72km/h), Traffic Jam Assist is deactivated and LKAS 
is activated instead. Once the speed of the vehicle 
drops to under 42mph (68km/h), Traffic Jam Assist 
is reactivated.

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When Traffic Jam Assist may automatically be canceled when:

It is possible that under any of the following circumstances, broken lines 
representing traffic lane lines will appear in the multi-information display, a buzzer 
will sound, and Traffic Jam Assist will be canceled.

•

The temperature of the camera is too high.

•

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

Under the following circumstances, some features of Traffic Jam Assist may not 
work.

■

Vehicle conditions

•

The front grille is dirty.

•

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 up.

•

Your vehicle is fitted with tires or wheels of differing size, type, or structure, or the 
tires are not properly inflated.

•

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

•

The interval between your vehicle and the detected vehicle ahead of you is too 
short.

•

Snow chains are installed on the tires.

■

Traffic Jam Assist: Conditions and limitations

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Traffic Jam Assist

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Environmental conditions

•

Bad weather (rain, fog, snow, etc.).

•

You are driving into low sunlight (e.g., at dawn or dusk).

•

Strong light is reflected onto your vehicle or the roadway.

•

Brightness in the immediate are suddenly changes between light and dark, such 
as at the an entrance or exit of a tunnel.

•

The road has puddles or the surface of the road is shiny due to recent rainfall.

•

Shadows are cast across the lane lines (e.g., trees, buildings, guardrails, vehicle, 
etc.).

•

Spray or snow coming off the vehicle ahead.

•

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

■

Roadway conditions

Certain features of the road can interfere with proper camera operation. Here are 
some examples:

•

The lines are not very distinguishable from the surface of the road.

•

The section of the road has lane restrictions or temporarily marked lanes.

•

The lines are faded, removed lines remain visible next to newer lines (duplicate 
lines), or the road is marked with tire tracks.

Faded lines

Duplicate lines

Tire tracks

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•

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 of inconsistent width.

•

The lane lines are partly concealed by your vehicle or another vehicle.

•

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

•

The vehicle is shaking considerably because of an uneven road surface, etc.

•

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

•

The lines appear distorted or they briefly disappear out of the camera detection 
range due to an uneven road surface.

•

The road is unpaved, or has a rough or bumpy surface.

•

The roads has double lines.

•

The surface of the road is slippery due to icy or snowy conditions.

•

Sections of the paved road are obscured by puddles or snow.

•

The road has ruts.

Very wide or narrow traffic lane

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Traffic Jam Assist

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The section of the road branches off or merges with another road.

■

Certain features of the road can interfere with proper radar sensor 
operation. Here are some examples:

•

The road has curves, undulations, slopes, etc.

•

The radar beam is reflecting off multiple items that are within close proximity of 
your vehicle. This can happen when you are driving, for example, across a narrow 
truss bridge.

Lane void of lines at junction

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Detection limitations

•

The vehicle ahead suddenly accelerates.

•

The vehicle ahead is a panel truck or a vehicle whose shape is not of standard 
dimensions.

•

The vehicle ahead of you is a motorcycle, bicycle, mobility scooter, or other small 
vehicle.

•

The ground clearance of the vehicle ahead is unusually high.

•

A vehicle suddenly cuts in front of yours. 

Radar detects upper 

section of an empty 

carrier truck.

Panel truck, 

tanker truck, 

etc.

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Road Departure Mitigation (RDM) System

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Road Departure Mitigation (RDM) System

Alerts and helps to assist you when the system detects a possibility of your vehicle 
unintentionally crossing over detected lane markings and/or leaving the roadway 
altogether.

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 steering torque and alerts you 
with rapid vibrations on the steering wheel, to 
help you remain within the detected lane.

2

Customized Features

 P. 300

As a visual alert, the 

Lane Departure

 

message appears on the multi-information 
display.

If the system determines that its steering input 
is insufficient to keep your vehicle on the 
roadway, it may apply braking.

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Braking is applied only when the lane 
markings are solid continuous lines.

The system cancels assisting operations when you turn the steering wheel to avoid 
crossing over detected lane markings.

If the system operates several times without 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 lane markings or lane or 
roadway 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.

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

2

Front Sensor Camera

 P. 480

The RDM system may not work properly or may work 
improperly under the certain conditions:

2

RDM Conditions and Limitations

 P. 472

There are times when you may not notice RDM 
functions due to your operation of the vehicle, or 
road surface conditions.

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Road Departure Mitigation (RDM) System

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The system becomes ready to start searching 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 high speed 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 Activates

1

How the System Activates

The RDM system may automatically shut off and the 
safety support indicator (amber) comes and stays on.

2

Indicators

 P. 78

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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Road Departure Mitigation (RDM) System

Driving

When you turn the RDM on and off, do the 
following.

1.

Press the safety support switch.

2.

Roll the right selector wheel to the 

 

symbol and push it.

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The message appears on the multi-
information display when the system 
becomes on or off.

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A check mark appears in the box and the 
color of the 

 symbol changes green 

when the system is on. The check mark 
disappears and the color of the 

 

symbol changes gray when the system is 
off.

The RDM is in the previously selected on 
(checked) or off (unchecked) setting each time 
you start the engine.

■

RDM On and Off

1

RDM On and Off

When you have selected 

Warning Only

 from the 

customized options using the audio/information 
screen, the system does not operate the steering 
wheel and braking.

2

Customized Features

 P. 300

If LKAS is off and you have selected 

Narrow

 from the 

customized options using the multi information 
display, the message below will appear in case the 
system determines a possibility of your vehicle 
crossing over detected lane markings.

2

Customized Features

 P. 300

In the following case, a beeper sounds, a message 
related to the ACC with Low Speed Follow appears 
on the multi-information display, and the braking 
function controlled by the Road Departure Mitigation 
system is canceled.

•

The vehicle has repeatedly applied the brakes to 
maintain the set speed (for example, you are 
descending a long slope).

Right Selector Wheel

Safety Support Switch

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Road Departure Mitigation (RDM) System

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The system may not properly detect lane markings and the position of your vehicle 
under certain conditions. Some examples of these conditions are listed below.

■

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.

■

RDM Conditions and Limitations

1

RDM On and Off

The vehicle stability assist

TM

 (VSA

®

) system, vehicle 

stability assist

TM

 (VSA

®

) OFF, adaptive cruise control 

(ACC) with low speed follow, and safety support   
indicators may come on in amber along with a 
message in the multi-information display when you 
set the power mode to ON after reconnecting a 
battery.
Drive a short distance at more than 12 mph (20 
km/h).
Each indicator should go off. If any do not, have your 
vehicle checked by a dealer.

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Road Departure Mitigation (RDM) System

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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.

* Not available on all models

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Traffic Sign Recognition System

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Traffic Sign Recognition System

Reminds you of road sign information of the current speed limit, your vehicle has 
just passed through, showing it on the multi-information display and the head-up 
display

*

.

When the camera located behind the rearview mirror captures traffic signs while 
driving, the system displays the ones that are recognized as designated for your 
vehicle. The sign icon will be displayed until the vehicle reaches a predetermined 
time and distance.

The sign icon also may switch to another one or disappear when:

•

The other designated limit is detected.

•

You make a turn with a turn signal at an intersection.

■

How the System Works

1

Traffic Sign Recognition System

Not all signs may be displayed, but any signs posted 
on roadsides should not be ignored. The system does 
not work on the designated traffic signs of all the 
countries you travel, nor in all situations.
Do not rely too much on the system. Always drive at 
speeds appropriate for the road conditions.

Never apply a film or attach any objects to the 
windshield that could obstruct the camera’s field of 
vision and cause the system to operate abnormally.
Scratches, nicks, and other damage to the windshield 
within the camera’s field of vision can cause the 
system to operate abnormally. If this occurs, we 
recommend that you replace the windshield with a 
genuine Acura replacement windshield. Making even 
minor repairs within the camera’s field of vision or 
installing an aftermarket replacement windshield 
may also cause the system to operate abnormally. 
After replacing the windshield, have a dealer 
recalibrate the camera. Proper calibration of the 
camera is necessary for the system to operate 
properly.

* Not available on all models

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Traffic Sign Recognition System

Driving

If the system does not detect any traffic signs while you are driving, the image below 
may appear.

1

Traffic Sign Recognition System

To help reduce the likelihood that high interior 
temperatures will cause the camera’s sensing system 
to shut off, when parking, find a shady area or face 
the front of the vehicle away from the sun. If you use 
a reflective sun shade, do not allow it to cover the 
camera housing.
Covering the camera can concentrate heat on it.

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

2

Front Sensor Camera

 P. 480

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Traffic Sign Recognition System

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The traffic sign recognition system may not be able to recognize the traffic sign in 
the following cases.

■

Vehicle conditions

•

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

•

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

•

The inside of the windshield is fogged.

•

There are portions remaining to be wiped.

•

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.

■

Environmental conditions

•

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

•

Strong light is reflected onto the roadway.

•

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

•

When you drive in the shadows of trees, buildings, etc.

•

Driving at night, in dark areas such as long tunnels.

•

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

•

A vehicle in front of you is traveling flying up spray or snow.

■

Traffic Sign Recognition System Conditions and Limitations

1

Traffic Sign Recognition System Conditions and Limitations

When the traffic sign recognition system 
malfunctions,  

appears 

on the multi-information 

display. If this message does not disappear, have your 
vehicle checked by a dealer.

* Not available on all models