2021 HONDA RIDGELINE sensor

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uuAirbags uSide Airbags
Safe Driving
Side Airbags
The side airbags help protect the torso and pelvis of the driver or a front passenger
during a moderate-to-severe side impact.
The side airbags are housed in the outside
edge of the driver’s and passenger’s seat-
backs.
Both are marked SIDE AIRBAG.
When the sensors detect a moderate-to-
severe side impact, the control unit signals the
side airbag on the impact side to immediately
inflate.
■Housing Locations
1 Side Airbags
Make sure you and your front seat passenger always
sit upright. Leaning into the path of a side airbag can
prevent the airbag from deploying properly and
increases your risk of serious injury.
Do not attach accessories on or near the side airbags.
They can interfere with the proper operation of the
airbags, or hurt someone if an airbag inflates.
Do not cover or replace the front seat-back covers
without consulting a dealer.
Improperly replac ing or covering front seat-back
covers can prevent your si de airbags from properly
deploying during a side impact.
Housing
Location
■Operation
When
inflated
Side
Airbag

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uuAirbags uSide Airbags
Safe Driving
■When a side airbag deploys with little or no visible damage
Because the airbag system senses sudden acceleration, a strong impact to the side
of the vehicle’s framework can cause a side airbag to deploy. In such cases, there
may be little or no damage, but the side impact sensors detected a severe enough
impact to deploy the airbag.
■When a side airbag may not deploy, even though visible damage appears
severe
It is possible for a side airbag not to deploy during an impact that results in
apparently severe damage. This can occur when the point of impact was toward the
far front or rear of the vehicle, or when the vehicle’s crushable body parts absorbed
most of the crash energy. In either case , the side airbag would not have been
needed nor provided protection even if it had deployed.

uuAirbags uAirbag System Indicators
56
Safe Driving■When the passenger airbag off
indicator comes on
The indicator comes on to alert you that the
passenger’s airbag ha s been turned off.
This occurs when the weight sensors
determine that a small child or infant is on the
passenger seat.
Children age 12 or under should always ri de properly restrained in a back seat.
2Child Safety P. 59
Objects placed on the seat ca n also cause the indicator to come on. If the indicator
is on, in the event of a crash the passenger’s airbag will not deploy.
If the front passenger’s seat is empty, the passenger’s airbag will not deploy and the
indicator will not come on.
■Passenger Airbag Off Indicator1 Passenger Airbag Off Indicator
To ensure the passenger is detected properly, confirm
that:
•The occupant is sitting in an upright position,
wearing the seat belt prope rly and the seat back is
not excessively reclined.
•The occupant is not leaning against the door or
center console.
•The occupant’s feet are plac ed on the floor in front
of them.
•There are no objects ha nging from the front
passenger’s seat.
•Only small, lightweight objec ts are in the seat back
pocket.
•No liquid has been spille d on or under the seat.
•There is no child seat or other object pressing
against the rear of the seat or seat back.
•There is no rear passenger pushing or pulling on
the back of the front passenger’s seat.
•There are no objects placed under or beside the
front passenger’s seat . Improperly positioned
objects can interfere with the advanced airbag
sensors.
•The floor mat behind the front passenger’s seat is
hooked to the floor mat anchor. An improperly
placed mat can interfere with the advanced airbag
sensors.
•The head restraint is not contacting the roof.
U.S.Canada

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uuAirbags uAirbag Care
Safe Driving
Airbag Care
You do not need to, and should not, perform any maintenance on or replace any
airbag system components yourself. However, you should have your vehicle
inspected by a dealer in the following situations:
■When the airbags have deployed
If an airbag has inflated, th e control unit and other related parts must be replaced.
Similarly, once an automatic seat belt te nsioner has been activated, it must be
replaced.
■When the vehicl e has been in a moderate-to-severe collision
Even if the airbags did not inflate, have your dealer inspect the following: the driver’s
seat position sensor, weight sensors in the passenger’s seat, front seat belt
tensioners, and each seat belt that was worn during the crash.
■Do not remove or modify a front seat without consulting a dealer
This would likely disable or affect the prop er operation of the driver’s seat position
sensor or the weight sensors in the passenger ’s seat. If it is necessary to remove or
modify a front seat to accommodate a pe rson with disabilities, contact a Honda
dealer, or for U.S. vehicles, American Honda Automobile Customer Service at
1-800-999-1009 and for Canadian vehicles , Honda Canada Customer Relations at
1-888-9-HONDA-9.
1 Airbag Care
We recommend against the use of salvaged airbag
system components, includi ng the airbag, tensioners,
sensors, and control unit.

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uuChild Safety uSafety of Infants and Small Children
Continued
Safe Driving
Safety of Infants and Small Children
An infant must be properly restrained in a rear-facing child seat until the infant
reaches the seat manufacturer’s weight or height limit for the seat.
■Positioning a rear-facing child seat
Child seats must be placed and secured in a
rear seating position.
When properly installed, a rear-facing chil d seat may prevent the driver or a front
passenger from moving their seat all the wa y back, or from locking their seat-back
in the desired position. Make sure that there is no contact between the child seat
and the seat in front of it.
It can also interfere with proper operation of the passenger’s advanced front airbag
system.
2 Airbags P. 44
If this occurs, we recommend that you insta ll the child seat directly behind the front
passenger’s seat, move the seat as far fo rward as needed, and leave it unoccupied.
Or, you may wish to get a smaller rear-facing child seat.
■Protecting Infants1 Protecting Infants
Experts recommend use of a rear-facing seat for a
child so long as the child’ s height and weight are
appropriate for a rear facing seat.
Infants should never be s eated in a forward-facing
position.
Always refer to the child seat manufacturer’s
instructions before installation.
Do not allow a front seat to rest against a child seat
installed in a rear seating position:
The weight sensor in the fr ont seat may not correctly
detect the actual weight of the occupant.
3WARNING
Placing a rear-facing child seat in the front
seat can result in serious injury or death
during a crash.
Always place a rear-fac ing child seat in the
rear seat, not the front.

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uuIndicators u
Continued
Instrument Panel
IndicatorNameOn/BlinkingExplanationMessage
Transmission
System
Indicator
●The current shift position or all the
shift positions blink if there is a
problem with the transmission system
and the vehicle will no longer move.●Immediately stop in a safe place.
2Emergency Towing P. 568●Have your vehicle checked by a dealer.
●The current shift position or all the
shift positions blink if you cannot
select
(P due to the transmission
system failure.
●The engine can be activated as a
temporary measure.
2 If the Transmission System Indicator
Blinks along with the Warning
Message P. 561
●Set the parking brake when parking.●Have your vehicle checked by a dealer
immediately.
Seat Belt
Reminder
Indicator
●Blinks and the beeper sounds for a
few seconds if you are not wearing a
seat belt when you set the power
mode to ON, then the indicator
comes on.
●If the front passenger is not wearing a
seat belt, the indicator comes on a
few seconds later.
●Blinks while driving if you and/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 and/or the front
passenger has fastened the seat
belt(s) - A detection error may have
occurred in the sensor. Have your vehicle
checked by a dealer.
2 Seat Belt Reminder P. 38

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uuIndicators u
Instrument Panel
IndicatorNameOn/BlinkingExplanationMessage
Road Departure
Mitigation
Indicator
●Comes on for a few seconds
when you set the power mode
to ON, then goes off.
●Comes on if there is a problem
with the Road Departure
Mitigation system.
●Stays on constantly - Have your vehicle
checked by a dealer.
●Comes on when the Road
Departure Mitigation system
shuts itself off.●Stays on - The temperature inside the camera
is too high.
Use the climate control system to cool down
the camera.
The system activates when the temperature
inside the camera cools down.
2 Front Sensor Camera P. 465
●Stays on - The area around the camera is
blocked by dirt, mud, etc. Stop your vehicle in
a safe place and wipe the debris off with a soft
cloth.
●Have your vehicle checked by a dealer if the
indicator and message come back on after
you cleaned the area around the camera.
2 Front Sensor Camera P. 465

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uuIndicators u
Continued
Instrument Panel
IndicatorNameOn/BlinkingExplanationMessage
Adaptive Cruise
Control (ACC)
Indicator (Amber)
●Comes on for a few seconds
when you set the power mode to
ON, then goes off.
●Comes on if there is a problem
with ACC.
●Comes on while driving - Have your
vehicle checked by a dealer.
●Comes on if anything covers the
radar sensor cover and prevents
the sensor from detecting a
vehicle in front.
●May come on when driving in
bad weather (rai n, snow, fog,
etc.)
●ACC has been automatically
canceled.
●When the radar sensor gets dirty, stop
your vehicle in a safe place, and then
clean the sensor using a soft cloth.
Indicator may take some time to go off
after the radar sensor is cleaned.
●Have your vehicle checked by a dealer if
the message does not disappear even
after you clean the front grille.
2 Radar Sensor P. 467
Adaptive Cruise
Control (ACC)
Indicator (Green)●Comes on when you press the
MAIN button.2Adaptive Cruise Control (ACC)
P. 438—
Lane Keeping
Assist System
( LKAS ) Indicator
(Amber)●Comes on for a few seconds
when you set the power mode to
ON, then goes off.
●Comes on if there is a problem
with the LKAS.
●Stays on constantly - Have your vehicle
checked by a dealer.