2021 HONDA CIVIC SEDAN brake sensor

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Quick Reference Guide
Honda Sensing® (P 450)
Honda Sensing ® is a driver support system
which employs the use of two distinctly
different kinds of sensors, a radar sensor
located in the lower bumper and a front
sensor camera mounted to the interior side
of the windshield, behind the rearview
mirror.
Front Sensor Camera The camera is located
behind the rearview
mirror.
Radar Sensor The radar sensor is in
the lower bumper.
Collision Mitigation
Braking System
TM
(CMBS
TM) (P 453)
Can assist you when there is a possibility of
your vehicle colliding with a vehicle or a
pedestrian detected in front of yours. The
CMBS
TM is designed to alert you when the
potential for a collision is determined, as
well as to reduce your vehicle speed to help
minimize collision severity when a collision is
deemed unavoidable.
Adaptive Cruise Control
(ACC) with Low Speed
Follow
(P463)
Helps maintain a constant vehicle speed and
a set following interval behind a vehicle
detected ahead of yours and, if the detected
vehicle comes to a stop, can decelerate and
stop your vehicle, without you having to
keep your foot on the brake or the
accelerator.
Lane Keeping Assist
System (LKAS)
(P 479)
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.
Road Departure
Mitigation (RDM) System
(P 487)
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.
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80
uuIndicators u
Instrument Panel
*1:Models with the smart entry system have an ENGINE START/STOP button instead of an ignition switch.
IndicatorNameOn/BlinkingExplanationMessage
Parking Brake
and Brake
System Indicator
(Amber)
●Comes on if there is a problem
with the radar sensor.
●Indicator may come on temporarily
when the Maximum Load Limit is
exceeded.
●Make sure the total load is within the
Maximum Load Limit.
2Maximum Load Limit P. 419●Stays on constantly - Have your vehicle
checked by a dealer.—
Automatic Brake
Hold System
Indicator
●Comes on for a few seconds when
you turn the igniti on switch to ON
(w*1, then goes off.●Comes on when the automatic
brake hold system is on.
2Automatic Brake Hold P. 497
Automatic Brake
Hold Indicator
●Comes on for a few seconds when
you turn the ignition switch to ON
(w*1, then goes off.●Comes on when the automatic
brake hold is activated.2Automatic Brake Hold P. 497—
U.S.
Canada
(Amber)
U.S.
Canada
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83
uuIndicators u
Continued
Instrument Panel
*1:Models with the smart entry system have an ENGINE START/STOP button instead of an ignition switch.
IndicatorNameOn/BlinkingExplanationMessage
Seat Belt
Reminder
Indicator
●Comes on and the beeper sounds
if you are not wearing a seat belt
when you turn the ignition switch
to ON
(w*1.●If the front passenger is not
wearing a seat belt, the indicator
comes on a few seconds later.
●Blinks while driving if either you or
the front passenger has not
fastened a seat belt. The beeper
sounds and the indicator blinks at
regular intervals.
●The beeper stops and the indicator goes
off when you and the front passenger
fasten their seat belts.
●Stays on after you or the front
passenger has fastened the seat belt
- A detection error may have occurred in
the sensor. Have your vehicle checked by
a dealer.
2 Seat Belt Reminder P. 40
Low Fuel
Indicator
●Comes on when the fuel reserve is
running low (approximately 1.8
U.S. gal/7.0 Liter left).
●Blinks if there is a problem with
the fuel gauge.
●Comes on - Refuel your vehicle as soon
as possible.
●Blinks - Have your vehicle checked by a
dealer.
Anti-lock Brake
System ( ABS)
Indicator
●Comes on for a few seconds when
you turn the ignition switch to ON
(w*1, then goes off.●If it comes on at any other time,
there is a problem with the ABS.
●Stays on constantly - Have your vehicle
checked by a dealer. With this indicator
on, your vehicle still has normal braking
ability but no anti-lock function.
2 Anti-lock Brake System (ABS) P. 499
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175
uuAdjusting the Seats uRear Seats
Controls
Rear Seats
1. Pull the release lever in the trunk to release
the lock.
2. Fold the seat-back down.
■Folding Down the Rear Seats1Folding Down the Rear Seats
The rear seat-back(s
*) can be folded down to
accommodate bulkier items in the trunk.
Never drive with the seat-back folded down and the
trunk lid open. 2 Exhaust Gas Hazard P. 75
To lock a seat-back upright, push it backwards until it
locks.
When returning the seat-back to its original position,
push it firmly back. Also, m ake sure all rear shoulder
belts are positioned in front of the seat-back.
Make sure that the folded seat-back does not press
against the front passenger seat, as this can cause the
weight sensors in the front passenger seat to work
improperly. 2 Passenger Airbag Off Indicator P. 59
Make sure all items in the trunk or items
extending through the opening into the rear
seats are properly secured. Loose items can fly
forward if you have to brake hard.
The front seat(s) must be far enough forward so they
do not interfere with the rear seats as they fold
down.
Release
Lever*
Release Lever
* Not available on all models
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415
Driving
This chapter discusses driving and refueling.
Before Driving................................... 416
Towing a Trailer ................................ 421
When Driving Starting the Engine .................. 422, 425
Precautions While Driving................. 430
Continuously Variable Transmission ..... 431
Shifting .................................... 432, 434
ECON Mode .................................... 438
Vehicle Stability AssistTM (VSA®), aka Electronic
Stability Control (ESC), System .............. 439
Agile Handling Assist ....................... 441
Tire Pressure Monitoring System (TPMS)*.. 442
Tire Pressure Monitoring System (TPMS) - Required Federal Explanation*........ 446
LaneWatchTM*.................................. 448
Honda Sensing ®................................ 450
Collision Mitigati on Braking System
TM
(CMBSTM) ....................................... 453
Adaptive Cruise Control (ACC) with Low Speed Follow ................................. 463
Lane Keeping Assist System (LKAS) .. 479
Road Departure Mitigation (RDM) System.... 487
Front Sensor Camera ....................... 491
Radar Sensor.................................... 493 Braking
Brake System ................................... 494
Anti-lock Brake System (ABS) ........... 499
Brake Assist System ......................... 500
Parking Your Vehicle ........................ 501
Multi-View Rear Camera .................. 503
Refueling ........................................... 505
Fuel Economy and CO
2 Emissions .... 508
Turbo Engine Vehicle*...................... 509
* Not available on all models
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453
uuHonda Sensing ®u Collision Mitigation Braking SystemTM (CMBSTM)
Continued
Driving
Collision Mitigation Braking SystemTM (CMBSTM)
Can assist you when there is a possibility of your vehicle colliding with a vehicle or a
pedestrian detected in front of yours. The CMBSTM is designed to alert you when the
potential for a collision is determined, as well as to reduce your vehicle speed to help
minimize collision severity when a collision is deemed unavoidable.
1 Collision Mitigation Braking SystemTM (CMBSTM)
Important Safety Reminder
The CMBS
TM is designed to reduce the severity of an
unavoidable collision. It doe s not prevent collision nor
stop the vehicle automatically. It is still your
responsibility to operate the brake pedal and steering
wheel appropriately acco rding to the driving
conditions.
The CMBS
TM may not activate or may not detect a
vehicle in front of y our vehicle under certain
conditions:
2 CMBS
TM Conditions and Limitations P. 458
You can read about handling information for the
camera equipped with this system. 2 Front Sensor Camera P. 491
For directions on the prop er handling of the radar
sensor, refer to the following page. 2 Radar Sensor P. 493
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uuHonda Sensing ®u Collision Mitigation Braking SystemTM (CMBSTM)
454
Driving
■How the system works1How the system works
When the CMBS
TM activates, it may automatically
apply the brake. It will be canceled when your vehicle
stops or a potential coll ision is not determined.
The radar sensor is in
the lower bumper.
The camera is located
behind the rearview
mirror.
The system starts monitoring the roadway ah ead when your vehicle speed is about
3 mph (5 km/h) and there is a vehicle in front of you.
When to use
The CMBSTM activates when:●The speed difference between your vehicle and a vehicle or pedestrian detected
in front of you becomes about 3 mph (5 km/h) and over with a chance of a
collision.
●Your vehicle speed is about 62 mph (100 km/h) or less and the system determines
there is a chance of a collision with:
- Vehicles detected in front of you that ar e stationary, oncoming, or traveling in your
same direction.
- A pedestrian who is detected in front of you.
●Your vehicle speed is above 62 mph (100 km/h), and the system determines there
is a chance of a collision with a vehicle detected in front of you traveling in your
same direction.
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459
uuHonda Sensing ®u Collision Mitigation Braking SystemTM (CMBSTM)
Continued
Driving
■Vehicle conditions
• Headlight lenses are dirty or the h eadlights 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.
• An abnormal tire or wheel condition (wro ng size, varied size or construction,
improperly inflated, co mpact spare tire, etc.).
• When tire chains are installed.
• The vehicle is tilted due to a heavy load or suspension modifications.
• The camera temperature gets too high.
• Driving with the parking brake applied.
• When the radar sensor in the lower bumper gets dirty.
•Driving at night or in a dark condition such as a tunnel with the headlights turned off.
■Detection limitations
• A vehicle or pedestrian suddenly crosses in front of you.
• The distance between your vehicle and the vehicle or pedestrian ahead of you is
too short.
• A vehicle cuts in front of you at a slow speed, and it brakes suddenly.
• When you accelerate rapidly and approach the vehicl e or pedestrian ahead of you
at high speed.
•The vehicle ahead of you is a motorcycle, bicycle, mobility scooter or other small vehicle.
• When there are animals in front of your vehicle.
• When you drive on a curved, winding or undulating road that makes it difficult for
the sensor to properly detect a vehicle in front of you.
• The speed difference between your vehicle an d a vehicle or pedestrian in front of
you is significantly large.
• An oncoming vehicle suddenly comes in front of you.
• Another vehicle suddenly comes in front of you at an intersection, etc.
• Your vehicle abruptly crosses over in front of an oncoming vehicle.
• When driving through a narrow iron bridge.
• When the lead vehicl e suddenly slows down.
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