Page 445 of 713

443Continued
Driving
When Driving
Starting the Engine
1.Make sure the parkin g brake is applied.
u The Parking Brake and Brake System
indicator (red) comes on for 30 seconds
when you press the electric parking
brake switch.
2. Depress the brake pedal.
3. Press the ENGINE START/STOP button
without depressing the accelerator pedal.1 Starting the Engine
Keep your foot firmly on the brake pedal when
starting the engine.
The engine is harder to st art in cold weather and in
thinner air found at altit udes above 8,000 feet (2,400
meters).
When starting the engine in cold weather, turn off all
electrical accessories such as the lights, climate
control system, and rear de fogger in order to reduce
battery drain.
If you live in a region where winter is extremely cold,
an engine block heater will improve starting and
warming of the engine. Consult a dealer for details.
If the exhaust system sounds abnormal or you can
smell exhaust gas inside the vehicle, have your vehicle
checked by a dealer. There may be a problem with
the engine or exhaust system.
Bring the keyless remote close to the ENGINE
START/STOP button if the batte ry in the keyless
remote is weak. 2 If the Keyless Remote Battery is Weak
P. 665
The engine may not start if the keyless remote is
subjected to strong radio waves.Electric Parking
Brake Switch
Brake Pedal
23 ACURA RDX-31TJB6400.book 443 ページ 2022年8月4日 木曜日 午後1時51分
Page 484 of 713

482
uuWhen Driving uBlind Spot Information System
Driving
The blind spot information system alert indicator may not come on under the
following conditions:
• There is a large speed difference betwee n your vehicle and the vehicle in the
adjacent lane.
• A vehicle is parked in a side lane.
• An object not detected by the radar se nsors approaches or passes your vehicle.
• The vehicle driving in the adjacent lane is a motorcycle or other small vehicle.
The blind spot information system may not operate correctly under the following
conditions:
• Making a turn at an intersection.
• Objects (guard rails, poles, trees, etc.) are detected.
• An object that does not reflect radio wave s well or 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 signal interference such as other radar sensors from another
vehicle or strong radio wave transmitted from a facility nearby.
• The rear bumper or the area around the radar sensors is covered by dirt, mud,
snow, ice, etc.
• The rear bumper or the area around the radar sensors has been damaged or
deformed.
• In bad weather (heavy rain, snow, and fog).
• Making a short turn or driving on a bumpy road that slightly tilts the vehicle.
• An object such as a bicycle rack is attached to the rear of the vehicle.
■Blind Spot Information System Conditions and Limitations
23 ACURA RDX-31TJB6400.book 482 ページ 2022年8月4日 木曜日 午後1時51分
Page 493 of 713

Continued491
uuAcuraWatchTMuCollision Mitigation Braking SystemTM (CMBSTM)
Driving
In the following situations, the radar sensor or camera may be unable to correctly
detect vehicles, pedestrians, moving bicycles, or road conditions, potentially causing
the CMBS to operate improperly.
2 Front Sensor Camera P. 541
2 Radar Sensor P. 543
■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 objects and the background.
• Driving into low sunlight (e.g., at dawn or dusk).
• Strong light is reflec ted onto the roadway.
• Driving in the shadows of trees, buildings, etc.
• Roadway objects or structures are misinterpreted as vehicles and pedestrians.
• Reflections on the interi or of the windshield.
• Driving at night or in a dark condition such as a tunnel.
■Roadway conditions
• Driving on a snowy or wet roadway (obs cured lane marking, vehicle tracks,
reflected lights, road spray, high contrast).
• Driving on curvy, winding, or undulating roads.
• The road is hilly or the vehicle is approaching the crest of a hill.
■CMBSTM Conditions and Limitations1Collision Mitigation Braking SystemTM (CMBSTM)
Have your vehicle checked by a dealer if you find any
unusual behavior of the system (e.g., the warning
message appears too frequently).
23 ACURA RDX-31TJB6400.book 491 ページ 2022年8月4日 木曜日 午後1時51分
Page 494 of 713
492
uuAcuraWatchTMuCollision Mitigation Braking SystemTM (CMBSTM)
Driving
■Vehicle conditions
• Headlight lenses are dirty or the headlights are not properly adjusted.
• The outside of the windshie ld is blocked by dirt, mud, leaves, wet snow, etc.
• The inside of the windshield is fogged.
• An abnormal tire or wheel condition (incorre ct sizes, varied sizes or construction,
improperly inflated, compact spare tire
*, etc.).
• When tire chains are installed.
• The vehicle is tilted due to a heav y load or suspension modifications.
• The camera temperature gets too high.
• Driving with the parking brake applied.
• When the radar sensor behind the emblem gets dirty.
• The vehicle is towing a trailer.
* Not available on all models
23 ACURA RDX-31TJB6400.book 492 ページ 2022年8月4日 木曜日 午後1時51分
Page 511 of 713

Continued509
uuAcuraWatchTMuAdaptive Cruise Control (ACC) with Low Speed Follow
Driving
The system may automatically shut off u nder certain conditions. Some examples of
these conditions are listed below. Othe r conditions may reduce some of the ACC
with Low Speed Follow functions.
2 Front Sensor Camera P. 541
2 Radar Sensor P. 543
■Environmental conditions
Driving in bad weather (r ain, fog, snow, etc.).
■Roadway conditions
Driving on a snowy or wet roadway (obscured lane marking, vehicle tracks, reflected
lights, road spra y, high contrast).
■Vehicle conditions
• The outside of the windshield is blocked by dirt, mud, leaves, wet snow, etc.
• An abnormal tire or wheel condition (inco rrect sizes, varied sizes or construction,
improperly inflated, compact spare tire
*, etc.).
• The camera temperature gets too high.
• The parking brake is applied.
• The radar sensor cover is dirty.
• The vehicle is tilted due to a heavy load or suspension modifications.
• Tire chains are installed.
• The vehicle is towing a trailer.
■ACC with Low Speed Follow Conditions and Limitations1ACC with Low Speed Follow Conditions and Limitations
If you need the radar sensor to be repaired, or
removed, or the radar se nsor cover is strongly
impacted, turn off the system by pressing the
button and take your vehicle to a dealer.
Have your vehicle checked by a dealer if you find any
unusual behavior of the system (e.g., the warning
message appears too frequently).
If the front of the vehicle is impacted in any of the
following situations, the ra dar sensor may not work
properly. Have your vehi cle checked by a dealer:
•The vehicle mounted onto a bump, curb, chock,
embankment, etc.
•You drive the vehicle where water is deep.
•Your vehicle has a frontal collision.
* Not available on all models
23 ACURA RDX-31TJB6400.book 509 ページ 2022年8月4日 木曜日 午後1時51分
Page 529 of 713

527
uuAcuraWatchTMuLane Keeping Assist System (LKAS)
Continued
Driving
■The LKAS may be automatically 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.
The system may not detect lane markings and therefore may not keep the vehicle in
the middle of the 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 reflec ted 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 interi or of the windshield.
• Driving at night or in a dark condition such as a tunnel.
■LKAS Conditions and Limitations
23 ACURA RDX-31TJB6400.book 527 ページ 2022年8月4日 木曜日 午後1時51分
Page 531 of 713
529
uuAcuraWatchTMuLane Keeping Assist System (LKAS)
Driving
• When objects on the road (curb, guard rail, pylons, etc.) are recognized as white
(or yellow) lines.
• Driving on roads with double lines.
■Vehicle conditions
• Headlight lenses are dirty or the h eadlights 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 (inco rrect sizes, varied sizes 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.
Lane void of lines at exit or
interchange
* Not available on all models
23 ACURA RDX-31TJB6400.book 529 ページ 2022年8月4日 木曜日 午後1時51分
Page 535 of 713
533
uuAcuraWatchTMuRoad Departure Mitigation System
Continued
Driving
The system may not properly detect lane ma rkings 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 reflec ted 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 interi or of the windshield.
• Driving at night or in a dark condition such as a tunnel.
■Road Departure Mitigation Conditions and Limitations
23 ACURA RDX-31TJB6400.book 533 ページ 2022年8月4日 木曜日 午後1時51分