sensor HONDA RIDGELINE 2021 (in English) Workshop Manual

473
uuParking Your Vehicle uParking Sensor System*
Continued
Driving
Parking Sensor System*
The corner and center sensors monitor obstacles around your vehicle, and the
beeper, multi-information display and audi o/information screen let you know the
approximate distance between your vehicle and the obstacle.
■The sensor location and range
1 Parking Sensor System*
Even when the system is on, always confirm if there is
no obstacle near your ve hicle before parking.
The system may not work properly when:
•The sensors are covered with snow, ice, mud or
dirt.
•The vehicle is on uneven su rface, such as grass,
bumps, or a hill.
•The vehicle has been out in hot or cold weather.•The system is affected by devices that emit
ultrasonic waves.
•Driving in bad weather.
The system may not sense:
•Thin or low objects.•Sonic-absorptive materials, such as snow, cotton,
or sponge.
•Objects directly under the bumper.
Do not put any accessories on or around the sensors.Front: Within about 24 in (60 cm) or less
Rear: Within about 27 in (70 cm) or less
Front Corner Sensors
Rear Corner Sensors Rear Center Sensors
Within about 47 in (120 cm) or less
* Not available on all models

uuParking Your Vehicle uParking Sensor System*
474
Driving
■Parking sensor system on and off
With the power mode in ON, press the
parking sensor system button to turn on or off
the system. The indicator in the button comes
on when the system is on.
The front corner, rear center and corner
sensors start to detect an obstacle when the
transmission is in
(R, and the vehicle speed is
less than 5 mph (8 km/h).
The front corner sensors start to detect an
obstacle when the transmission is not in
(P,
and the vehicle speed is less than 5 mph (8
km/h).
1 Parking Sensor System*
When you set the power mode to ON, the system will
be in the previously selected condition.Indicator
* Not available on all models

475
uuParking Your Vehicle uParking Sensor System*
Continued
Driving
■When the distance between your vehicle and detected obstacles becomes shorter
*1: At this stage, only the center sensors detect obstacles.
Interval between beepsDistance between the Bumper and ObstacleIndicatorMulti-Information Display/
Audio/information screen
Corner SensorsCenter Sensors
Moderate—Rear: About 47-27 in (120-70 cm) Blinks in Yellow*1
Short
Front: About 24-18 in (60-45 cm)
Rear: About 27-22 in (70-55 cm)
Rear: About 27-22 in
(70-55 cm)
Blinks in Amber
Very short
Front: About 18-14 in (45-35 cm)
Rear: About 22-18 in (55-45 cm)
Rear: About 22-18 in
(55-45 cm)
Continuous
Front: About 14 in (35 cm) or less
Rear: About 18 in
(45 cm) or less
Rear: About 18 in (45 cm) or lessBlinks in Red
Indicators light up where the
sensor detects an obstacle
Audio/Information Screen
Multi-Information Display
Indicators light up where the
sensor detects an obstacle

uuParking Your Vehicle uParking Sensor System*
476
Driving
1. Make sure that the parking sensor system is not activated. Set the power mode to
VEHICLE OFF.
2. Press and hold the parking sensor system button, and set the power mode to ON.
3. Keep pressing the button for 10 seconds. Release the button when the indicator
in the button flashes.
4. Press the button again. The indi cator in the button goes off.
u The beeper sounds twice. The re ar sensors are now turned off.
To turn the rear sensors on again, follow the above procedure. The beeper sounds
three times when the rear sensors come back on.
■Turning off All Rear Sensors1 Turning off All Rear Sensors
When you shift to
(R, the indicator in the parking
sensor system button blinks as a reminder that the
rear sensors have been turned off.

477
uuParking Your Vehicle uCross Traffic Monitor*
Continued
Driving
Cross Traffic Monitor*
Monitors the rear corner areas using the radar sensors when reversing, and alerts
you if a vehicle approaching from a rear corner is detected.
The system is convenient when you are backing out of a parking space.1Cross Traffic Monitor*
The parking sensor system’s alerting buzzer overrides
the Cross Traffic Monitor buzzer when the sensors
are detecting obstacles at the closest range.
3CAUTION
Cross Traffic Monitor cannot detect all
approaching vehicles and may not detect
an approaching vehicle at all.
Failure to visually confirm that it is safe to
back up the vehicle before doing so may
result in a collision.
Do not solely rely on the system when
reversing; always also use your mirrors, and
look behind and to the sides of your vehicle
before reversing.
Models with parking sensor system
* Not available on all models

uuParking Your Vehicle uCross Traffic Monitor*
478
Driving
The system activates when:
• The power mode is in ON.
• The Cross Traffic Monitor is turned on.
2 Cross Traffic Monitor On and Off P. 480
•The transmission is in (R.
• Your vehicle is moving at 3 mph (5 km/h) or
lower.
When a vehicle is detected approaching from a rear corner, Cross Traffic Monitor
alerts you with a buzzer and a displayed warning.
The system will not detect a vehicle that approaches from directly behind your
vehicle, nor will it provide alerts about a detected vehicle when it moves directly
behind your vehicle.
The system does not provide alerts for a vehicle that is moving away from your
vehicle, and it may alert for pedestri ans, bicycles, or stationary objects.
■How the System Works1Cross Traffic Monitor*
Cross Traffic Monitor may not detect or may delay
alerting an approach ing vehicle, or may alert without
an approaching vehicle under the following
conditions:
•An obstacle, such as a nother vehicle and a wall,
near your vehicle’s rear bumper, is blocking the
radar sensor’s scope.
•Your vehicle is moving at the speed of about 3 mph
(5 km/h) or higher.
•A vehicle is approaching at the speed other than
between about 6 mph (10 km/h) and 16 mph
(25 km/h).
•The system picks up external interference such as
other radar sensors from an other vehicle or strong
radio wave transmitted fr om a facility nearby.
•Either corner of the rear bumper is covered with
snow, ice, mud or dirt.
•When there is bad weather.
•Your vehicle is on an incline.
•Your vehicle is tilted due to a heavy load in the rear.•Your vehicle is reversing towards a wall, a pole, a
vehicle, and so on.
The rear bumper or the sens ors have been improperly
repaired or the rear bum per has been deformed.
Have your vehicle checked by a dealer.
For proper operation, always keep the rear bumper
corner area clean.
Do not cover the rear bumper corner area with labels
or stickers of any kind.
Radar sensors:
Underneath the rear bumper
corners
* Not available on all models

Continued479
uuParking Your Vehicle uCross Traffic Monitor*
Driving
An arrow icon appears on the side a vehicle is approaching on the audio/information
screen.
■When the System Detects a Vehicle1When the System Detects a Vehicle
If the on the lower right changes to in amber
when the transmission is in
( R, mud, snow or ice,
etc. may have accumulated in the vicinity of the
sensor. The system is temporarily canceled. Check the
bumper corners for any obs tructions, and thoroughly
clean the area if necessary.
If the comes on when the transmission is in
( R,
there may be a problem with the Cross Traffic
Monitor system. Do not use the system and have your
vehicle checked by a dealer.
If the display remains the same with the transmission
in
( R, there may be a problem with the rear camera
system and the Cross Traffic Monitor system.
Do not use the system and have your vehicle checked
by a dealer.
Wide View Normal View
Arrow IconTop Down View

507
uuMaintenance Under the Hood uBrake Fluid
Maintenance
Brake Fluid
The fluid level should be between the MIN
and MAX marks on the side of the reserve
tank.
Refilling Window Washer Fluid
Check the amount of window washer fluid.
If the level is low, fill the washer reservoir.
If the washer fluid is low, a message appears on the multi-information display.
Pour the washer fluid carefully. Do not overflow the reservoir.
Specified fluid: Honda Heavy Duty Brake Fluid DOT 3
■Checking the Brake Fluid
1Brake Fluid
NOTICE
Brake fluid marked DOT 5 is not compatible with your
vehicle’s braking system and can cause extensive
damage.
If the specified br ake fluid is not av ailable, you should
use only DOT 3 or DOT 4 fluid from a sealed
container as a temporary replacement.
Using any non-Honda brake fluid can cause corrosion
and decrease the longevity of the system. Have the
brake system flushed and re filled with Honda Heavy
Duty Brake Fluid DOT 3 as soon as possible.
If the brake fluid level is at or below the MIN mark,
have a dealer inspect the vehicle for leaks or worn
brake pads as soon as possible.
Reserve Tank
MIN
MAX
1 Refilling Window Washer Fluid
NOTICE
Do not use engine antifreeze or a vinegar/water
solution in the windshield washer reservoir.
Antifreeze can damage y our vehicle’s paint. A
vinegar/water solution ca n damage the windshield
washer pump.
Use only commercially avai lable windshield washer
fluid.
Avoid prolonged use of hard water to prevent lime
scale build up.
Models without washer level sensor
Models with washer level sensor

522
uuChecking and Maintaining Tires uTire and Wheel Replacement
Maintenance
Tire and Wheel Replacement
Replace your tires with radials of the sa me size, load range, speed rating, and
maximum cold tire pressure ra ting (as shown on the tire’s sidewall). Using tires of a
different size or construction can cause ce rtain vehicle systems such as the ABS and
Vehicle Stability Assist
TM (VSA ®) system to work incorrectly.
It is best to replace all four tires at the same time. If that isn’t possible, replace the
front or rear tires in pairs.
Whenever you have a tire replaced or reset, make sure that the rubber valve stem is
replaced and that the TPMS sensor is trans ferred from the old valve stem to the new
one.
If you replace a wheel, make sure that the wheel’s specifications match those of the
original wheels.
1 Tire and Wheel Replacement
3WARNING
Installing improper tires on your vehicle can
affect handling and stability. This can cause
a crash in which you can be seriously hurt or
killed.
Always use the size and type of tires
recommended in this owner’s manual.

525
Maintenance
Battery
Checking the Battery
The condition of the battery is monitored by a
sensor located on the negative terminal of the
battery. If there is a problem with this sensor,
the multi-information display will display a
warning message. If this happens, have your
vehicle inspected by a dealer.
Check the battery termi nals for corrosion
monthly.
To access the battery terminals:
1. Remove the engine compartment cover.
2 Engine Compartment Cover P. 498
2.Remove the clips using a phillips-head scre wdriver, then remove the air intake
duct.
2 High Beam Headlights P. 508
If your vehicle’s battery is disconnected or goes dead:
•The audio system is disabled.
2 Audio System Theft Protection P. 208
•The clock resets.
2 Clock P. 116
1Battery
WARNING: Battery post, terminals,
and related accessories contain lead
and lead compounds.
Wash your hands after handling.
When you find corrosion, cl ean the battery terminals
by applying a baking powder and water solution.
Clean the terminals with a damp towel. Cloth/towel
dry the battery. Coat the terminals with grease to
help prevent future corrosion.
When replacing the battery, the replacement must be
of the same specifications.
Consult a dealer for more information.
3WARNING
The battery gives off explosive hydrogen
gas during normal operation.
A spark or flame can cause the battery to
explode with enough force to kill or
seriously hurt you.
When conducting any battery
maintenance, wear prot ective clothing and
a face shield, or have a skilled technician do
it.
Models without navigation system