2021 HONDA RIDGELINE lights

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uuWhen Driving uStarting the Engine
Driving
■To stop the engine1Remote Engine Start
The engine may stop whil e it is running if:
•You do not start the vehicl e within 10 minutes of
starting the engine with the smart entry remote.
•The engine is stopped by using the smart entry
remote.
•There is any antenna failure.
•The security system alarm is not set.•The door is unlocked with the built-in key.
•The hood is open, or any door, or the trunk is
unlocked.
•The transmission is in a position other than ( P.
•The engine coolant temper ature is extremely high.
•The battery is low.•The engine oil pressure is low.
•The Malfunction Indicator Lamp comes on if there
is a problem with the emissions control systems.
Press and hold the
button for one second.
Go within the range, and try again.
The exterior lights will not flash when the remote is out of
the smart entry system range.
The engine will not stop.
The exterior lights flash once if the engine stops
successfully.

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uuWhen Driving uTire Pressure Monitoring System (TPMS) with Tire Fill Assist
Driving
Tire Pressure Monitoring System (TPMS) with Tire
Fill Assist
Monitors the tire pressure while you are
driving. If your vehicle’s tire pressure becomes
significantly low, the Low Tire Pressure/TPMS
indicator comes on and a message appears on
the multi-information display.1 Tire Pressure Monitoring System (TPMS) with Tire Fill Assist
Conditions such as low ambient temperature and
altitude change directly affect tire pressure and can
trigger the Low Tire Pressure/TPMS indicator to come
on. 2 If the Low Tire Pressure/TPMS Indicator
Comes On or Blinks P. 560
Tire pressure checked and inflated in:
•Warm weather can beco me under-inflated in
colder weather.
•Cold weather can become over-inflated in warmer
weather.
The Low Tire Pressure/TPMS indicator will not come
on as a result of over inflation.
Only use genuine TPMS specified wheels since your
vehicle’s wheels are equipped with the low tire
pressure/TPMS sensor.
If you drive your vehicle without the genuine TPMS
specified wheels, the low ti re pressure/TPMS indicator
blinks for about one minute and then stays on. 2 Tire and Wheel Replacement P. 522
The TPMS audibly and visually informs you of
changes in tire pressure of the individual tire that you
are adjusting using audibl e and visual indications.
If a change in tire pressure has been significant, the
system beeps and the hazard lights flash continuously
for five seconds when the specified tire pressure is
reached. Stop filling the tire.
Low Tire Pressure/
TPMS indicator

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uuHonda Sensing ®u Collision Mitigation Braking SystemTM (CMBSTM)
Driving
The system may automatically shut off and the CMBSTM indicator will come on under
certain conditions. Some examples of th ese conditions are listed below. Other
conditions may reduce some of the CMBS
TM functions.
2 Front Sensor Camera P. 465
2 Radar Sensor P. 467
■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 reflected onto the roadway.
• Driving in the shadows of trees, buildings, etc.
• Roadway objects or structures are misint erpreted 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 Limitations

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uuHonda Sensing ®u Collision Mitigation Braking SystemTM (CMBSTM)
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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 (wrong 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 behind the emblem gets dirty.
• The vehicle is towing a trailer.

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uuHonda Sensing ®u Adaptive Cruise Control (ACC)
Driving
The system may automatically shut off and the ACC indicator will come on under
certain conditions. Some examples of these conditions are listed below. Other
conditions may reduce some of the ACC functions.
2 Front Sensor Camera P. 465
2 Radar Sensor P. 467
■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 (wrong size, varied size or construction,
improperly inflated, co mpact spare tire, etc.).
• The camera temperature gets too high.
• The parking brake is applied.
• The front grille 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 Conditions and Limitations1ACC Conditions and Limitations
If you need the radar sensor to be repaired, or
removed, or the front grille is strongly impacted, turn
off the system by pressing the MAIN 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).

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uuHonda Sensing ®u Lane Keeping Assist System (LKAS)
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 extremely 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.
Faded lines Duplicate lines Tire tracks
Very wide or narrow traffic lane

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uuHonda Sensing ®u Lane Keeping Assist System (LKAS)
Driving
• 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 (wrong size, varied size or construction,
improperly inflated, co mpact 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 junction

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uuHonda Sensing ®u Road Departure Mitigation 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 extremely 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 headlights are not properly adjusted.
• The outside of the windshield is streake d 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 (wrong size, varied size or construction,
improperly inflated, comp act spare tire, etc.).
• The vehicle is tilted due to a heav y load or suspension modifications.
• When tire chains are installed.
• The vehicle is towing a trailer.