HONDA PASSPORT 2023 Owners Manual
Page 471 of 610
uuHonda Sensing ®u Road Departure Mitigation (RDM) System
470
Driving
The system activates 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 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. 82
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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Continued471
uuHonda Sensing ®u Road Departure Mitigation (RDM) System
Driving
Press the RDM button to turn the system on 
and off.
u The indicator in the button comes on and 
the message appears on the driver 
information interface when the system is 
on.
■RDM On and Off1RDM 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. 329
RDM Button
Indicator
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472
uuHonda Sensing ®u Road Departure Mitigation (RDM) System
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 la ne 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 interi or of the windshield.
• Driving at night or in a dark condition such as a tunnel.
■RDM Conditions and Limitations
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473
uuHonda Sensing ®u Road Departure Mitigation (RDM) System
Driving
■Roadway conditions
• Driving on a snowy or wet roadway (obs cured 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 extremel y 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 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, co mpact 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.
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474
uuHonda Sensing ®u Front Sensor Camera
Driving
Front Sensor Camera
The camera, used in systems such as LKAS, RDM, ACC, and CMBSTM, is designed to 
detect an object that triggers any of  the systems to operate its functions.
This camera is located behind the rearview 
mirror.
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 re flective sun shade, do 
not allow it to cover  the camera housing. 
Covering the camera can concentrate heat on 
it.
■Camera Location and Handling Tips
1 Front Sensor Camera
Never apply a film or attach any objects to the 
windshield, the hood, or th e front grille that could 
obstruct the camera’s fiel d of vision and cause the 
system to operate abnormally.
Scratches, nicks, and othe r damage to the windshield 
within the camera’s fiel d of vision can cause the 
system to operate abnormall y. If this occurs, we 
recommend that you replac e the windshield with a 
genuine Honda replacem ent windshield. Making 
even minor repairs within th e camera’s field of vision 
or installing an aftermarket replacement windshield 
may also cause the system to operate abnormally.
After replacing the winds hield, have a dealer 
recalibrate the camera. Pr oper calibration of the 
camera is necessary for the system to operate 
properly.
Do not place an object on the top of the instrument 
panel. It may reflect onto  the windshield and prevent 
the system from detecting lane lines properly.
Front Sensor 
Camera
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475
uuHonda Sensing ®u Front Sensor Camera
Driving
1Front Sensor Camera
If the Some Driver Assist Systems Cannot 
Operate:  Camera Temperature Too High   
message appears:
•Use the climate control system to cool down the 
interior and, if necessary,  also use defroster mode 
with the airflow directed towards the camera.
•Start driving the vehicle to lower the windshield 
temperature, which cool s down the area around 
the camera.
If the Some Driver Assist Systems Cannot 
Operate:  Clean Front Windshield   message 
appears:
•Park your vehicle in a sa fe place, and clean the 
windshield. If the message does not disappear after 
you have cleaned the winds hield and driven for a 
while, have your vehicle checked by a dealer.
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Page 477 of 610
476
uuHonda Sensing ®u Radar Sensor
Driving
Radar Sensor
The radar sensor is located behind the 
emblem.1Radar Sensor
Avoid strong impacts to  the radar sensor cover.
For the CMBS
TM to work properly:
Always keep the radar sensor cover clean.
Never use chemical solvents or polishing powder for 
cleaning the sensor cover.  Clean it with water or a 
mild detergent.
Do not put a sticker on the radar sensor cover or 
replace the radar sensor cover.
If you need the radar sensor to be repaired, or 
removed, or the radar se nsor cover is strongly 
impacted, turn off the syst em by using the collision 
mitigation braking system
TM (CMBSTM) OFF button 
and take your vehicle to a dealer. 2 CMBS
TM On and Off  P. 438
If the vehicle is involved in any of the following 
situations, the radar sens or may not work properly.
Have your vehicle checked by a dealer:
•Your vehicle is involved in a frontal collision
•Your vehicle drives th rough deep water or is 
submerged in deep water
•Your vehicle strongly strikes a bump, curb, chock, 
slope, or embankment th at could jar the radar 
sensor
Radar Sensor
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477Continued
Driving
Braking
Brake System
Use the parking brake to keep the vehicle stationary when parking.
To apply:
Depress the parking brake pedal down with 
your foot.
To release:
1. Depress the brake pedal.
2. Depress the parking brake.
■Parking Brake1Parking Brake
NOTICE
Release the parking brake fu lly before driving. The 
rear brakes and axle can  be damaged if you drive 
with the parki ng brake applied.
If you start driving without  fully releasing the parking 
brake, a buzzer sounds  as a warning, and Release 
Parking Brake  appears on the driver information 
interface.
Always apply the parki ng brake when parking.
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uuBraking uBrake System
478
Driving
Your vehicle is equipped with disc brakes at all four wheels. A vacuum power assist 
helps reduce the effort needed on the brake  pedal. The brake assist system increases 
the stopping force when you depress th e brake pedal hard in an emergency 
situation. The anti-lock brake system (ABS ) helps you retain steering control when 
braking very hard.
2 Brake Assist System  P. 480
2 Anti-lock Brake System (ABS)  P. 479
■Foot Brake1Foot Brake
Check the brakes after driving through deep water, 
or if there is a buildup of  road surface water. If 
necessary, dry the brakes by  lightly depressing the 
pedal several times.
If you hear a continuous me tallic friction sound when 
applying the brakes, this is  caused by the brake wear 
indicator rubbing on the  brake rotor and indicates 
that the brake pads need to be replaced. Have the 
vehicle checked by a deal er. If you hear only an 
occasional squeak or squeal  when you initially apply 
the brake pedal, this may be normal and caused by 
high frequency vibration of the brake pads against 
the rotating brake disc.
Constantly using the brake pedal while going down a 
long hill builds up heat, which reduces the brake 
effectiveness. Apply engine  braking by taking your 
foot off the accelerator pe dal and downshifting to a 
lower gear.
Do not rest your foot  on the brake pedal while 
driving, as it will lightly  apply the brakes and cause 
them to lose effectiveness  over time and reduce pad 
life. It will also conf use drivers behind you.
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479
uuBraking uAnti-lock Brake System (ABS)
Driving
Anti-lock Brake System (ABS)
Helps prevent the wheels from locking up,  and helps you retain steering control by 
pumping the brakes rapidly, much faster than you can.
The electronic brake distribu tion (EBD) system, which is part of the ABS, also 
balances the front-to-rear braking distribution according to vehicle loading.
You should never pu mp the brake pedal. Let the ABS work for you by always 
keeping firm, steady pressure on the brake pe dal. This is sometimes referred to as 
“stomp and steer.”
■ABS operation
The brake pedal may pulsate slightly when  the ABS is working. Depress the brake 
pedal and keep holding the pedal firmly do wn. On dry pavement, you will need to 
press on the brake pedal very hard before th e ABS activates. However, you may feel 
the ABS activate immediately if you  are trying to stop on snow or ice.
ABS may activate when you depres s the brake pedal when driving on:
• Wet or snow covered roads.
• Roads paved with stone.
• Roads with uneven surf aces, such as potholes, cracks, manholes, etc.
When the vehicle speed goes unde r 6 mph (10 km/h), the ABS stops.
■ABS1Anti-lock Brake System (ABS)
NOTICE
The ABS may not function correctly if you use a tire of 
the incorrect size or type.
If the ABS indicator comes on while driving, there 
may be a problem with the system.
While normal braking will not  be affected, there is a 
possibility that the ABS wi ll not be operating. Have 
your vehicle checked by  a dealer immediately.
The ABS is not designed  for the purpose of reducing 
the time or distance it takes  for a vehicle to stop: It is 
designed to limit brake lockup which can lead to 
skidding and loss of steering control.
In the following cases, yo ur vehicle may need more 
distance to stop than a vehicle without the ABS:
•You are driving on rough or uneven road surfaces, 
such as gravel or snow.
•The tires are equipped  with snow chains.
The following may be observed with the ABS system:
•Motor sounds coming from the engine
compartment when the brakes are applied, or when 
system checks are being performed after the engine 
has been started and while the vehicle accelerates.
•Brake pedal and/or the vehicle body vibration when 
ABS activates.
These vibrations and sou nds are normal to ABS 
systems and are no cause for concern.
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