2021 HONDA CIVIC SEDAN check engine

Continued457
uuHonda Sensing ®u Collision Mitigation Braking SystemTM (CMBSTM)
Driving
Press and hold the button until the beeper
sounds to switch the system on or off.
When the CMBS
TM is off:
• The CMBSTM indicator in the instrument
panel comes on.
• A message on the driver information
interface reminds you th at the system is off.
The CMBS
TM is turned on every time you start
the engine, even if you turned it off the last
time you drove the vehicle.
■CMBSTM On and Off1 Collision Mitigation Braking SystemTM (CMBSTM)
The CMBS
TM may automatically shut off, and the
CMBSTM indicator will come and stay on under certain
conditions:
2 CMBS
TM Conditions and Limitations P. 458
When the CMBS
TM is activated, it will continue to
operate even if the accele rator pedal is partially
depressed. However, it w ill be canceled if the
accelerator pedal is deeply depressed.
The indicators for the Adaptive Cruise Control (ACC)
with Low Speed Follow, Road Departure Mitigation
(RDM), Vehicle Stability Assist
TM (VSA ®) system,
Vehicle Stability AssistTM (VSA ®) OFF, Low Tire
Pressure/TPMS* and Collision Mitigation Braking
SystemTM (CMBSTM) may come on after reconnecting
the battery. Drive a short distance at more than 12
mph (20 km/h). The indicators should go off. If they
do not, have your vehicl e checked by a dealer.
* Not available on all models
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uuBraking uBrake System
496
Driving
Your vehicle is equipped with disc brakes at all four wheels. A vacuum power assist
helps to reduce the effort needed on the brake pedal. The brake assist system
increases the stopping force when you depress the brake pedal hard in an
emergency situation. The an ti-lock brake system (ABS) helps you retain steering
control when braking very hard.
2 Brake Assist System P. 500
2 Anti-lock Brake System (ABS) P. 499
■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
speed position.
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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499
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 wrong 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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511
Maintenance
This chapter discusses basic maintenance.
Before Performing MaintenanceInspection and Maintenance ............ 512
Safety When Performing Maintenance .... 513Parts and Fluids Used in Maintenance Service ........................................... 514
Maintenance Minder
TM..................... 515
Maintenance Under the Hood
Maintenance Items Un der the Hood .... 521Opening the Hood ........................... 523
Recommended Engine Oil ................ 524
Oil Check ......................................... 525
Adding Engine Oil ............................ 527
Changing the Engine Oil and Oil Filter..... 528
Engine Coolant ................................ 531
Transmission Fluid ............................ 533
Brake Fluid ....................................... 534
Refilling Window Washer Fluid......... 535
Replacing Light Bulbs ....................... 536
Checking and Maintaining Wiper Blades.... 545Checking and Maintaining Tires
Checking Tires ................................. 548
Tire and Loading Information Label .. 549
Tire Labeling .................................... 549
DOT Tire Quality Grading (U.S. Vehicles).. 551Wear Indicators................................ 553
Tire Service Life ................................ 553 Tire and Wheel Replacement ........... 554
Tire Rotation .................................... 555
Winter Tires ..................................... 556
Battery ............................................... 558
Remote Transmitter Care Replacing the Button Battery ........... 560
Climate Control System Maintenance....562CleaningInterior Care .................................... 563
Exterior Care.................................... 565
Accessories and Modifications Accessories ...................................... 568
Modifications................................... 569
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523
uuMaintenance Under the Hood uOpening the Hood
Maintenance
Opening the Hood
1. Park the vehicle on a level surface, and set
the parking brake.
2. Pull the hood release handle under the
driver’s side lower corner of the dashboard.
u The hood will pop up slightly.
3. Pull up the hood latch lever (located under
the front edge of the hood to the center)
and raise the hood. Once you have raised
the hood slightly, you can release the lever.
4. Remove the support rod from the clamp
using the grip. Mount the support rod in
the hood.
When closing, remove the support rod, and
stow it in the clamp, then gently lower the
hood. Remove your hand at a height of
approximately 12 inches (30 cm) and let the
hood close.1 Opening the Hood
NOTICE
Do not open the hood when the wiper arms are
raised. The hood will strike the wipers, resulting in
possible damage to the hood and/or the wipers.
NOTICE
Do not press the engine cover forcibly. This may
damage the engine cover and component parts.
When closing the hood, check that the hood is
securely latched.
If the hood latch lever moves stiffly, or if you can
open the hood without lifti ng the lever, the latch
mechanism should be cl eaned and lubricated.
3WARNING
The hood support rod can become very hot
due to heat from the engine.
To ensure against possible burns, do not
handle the metal section of the rod: Use
the foam grip instead.
2.0 L engine models
Hood Release Handle
Pull
Lever
Support Rod
Grip
Clamp
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525
uuMaintenance Under the Hood uOil Check
Continued
Maintenance
Oil Check
We recommend that you check the engi ne oil level every time you refuel.
Park the vehicle on level ground.
Wait approximately three minutes after turn ing the engine off before you check the
oil. 1.Remove the dipstick (orange).
2. Wipe the dipstick with a clean cloth or
paper towel.
3. Insert the dipstick back all the way into its
hole.1Oil Check
If the oil level is near or below the lower mark, slowly
add oil, being carefu l not to overfill.
1.5 L engine models
2.0 L engine models
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uuMaintenance Under the Hood uOil Check
526
Maintenance
4. Remove the dipstick again, and check the
level. It should be between the upper and
lower marks. Add oil if necessary.
Upper Mark
Lower Mark
1.5 L engine models
Upper Mark
Lower Mark
2.0 L engine models
1Oil Check
Under certain driving conditions, it is normal for the
engine oil level to rise above the upper mark. If you
have a concern, consult a dealer for details.
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527
uuMaintenance Under the Hood uAdding Engine Oil
Maintenance
Adding Engine Oil
1. Unscrew and remove the engine oil fill cap.
2. Add oil slowly.
3. Reinstall the engine oil fill cap, and tighten
it securely.
4. Wait for three minutes and recheck the
engine oil dipstick.1Adding Engine Oil
NOTICE
Do not fill the engine oil above the upper mark.
Overfilling the engine oil may result in leaks and
engine damage.
If any oil spills, wipe it away immediately. Spilled oil
may damage the engine compartment components.
Engine Oil
Fill Cap
1.5 L engine models
Engine Oil
Fill Cap
2.0 L engine models
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