2021 HONDA ACCORD SEDAN check engine light

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uuWhen Driving uShifting
Driving
■Shift Operation1Shift Operation
NOTICE
When you change (D to (R and vice versa, depress
the brake pedal to come to a complete stop, then
select the intended shift position while maintaining
brake pressure.
Use the shift position indi cator and the shift button
indicator to check the shift position before selecting a
shift button.
If the indicator of the currently selected shift position,
or all the shift position indicators are blinking
simultaneously, there is a problem with the
transmission.
Avoid sudden acceleration and have the transmission
checked by a dealer as soon as possible.
The fuel supply may be cut of f if you drive at engine
speeds in or over the tac hometer’s red zone (engine
speed limit). If this happe ns, you may experience a
slight jolt.
When the engine speed is increased while the
transmission is in
( N, (P or (R, the fuel supply may
be cut off even without the engine speed entering
the tachometer’s red zone.
The beeper sounds once when you change to
( R.
2 Customized Features P. 352
Press the (P button.
Pull back the
( R button.
Press the
( N button.
Press the
( D button.
Shift Button Indicator M
(sequential mode) Indicator
Tachometer’s red zone Gear Selection Indicator
Shift Position Indicator

uuWhen Driving uShifting
430
Driving
■Shift Lever Operation1Shift Lever Operation
NOTICE
When you change the shift position from (D to ( R
and vice versa, come to a complete stop and keep the
brake pedal depressed.
Operating the shift lever be fore the vehicle has come
to a complete standstill can damage the transmission.
Use the shift position indicator to check the lever
position before pulling away.
If the transmission system indicator blinks when
driving, in any shift positi on, there is a problem with
the transmission.
Avoid sudden acceleration and have the transmission
checked by a dealer as soon as possible.
The fuel supply may be cut of f if you drive at engine
speeds in or over the tac hometer’s red zone (engine
speed limit). If this happe ns, you may experience a
slight jolt.
It may not be possible to operate the shift lever if the
brake pedal is applied while the shift lever release
button is held down.
Depress the brake pedal first.
When shifting positions in extremely low
temperatures (-22°F/-30°C), there may be a short
delay before the shift posit ion is displayed. Always
confirm you are in the corr ect shift position before
driving.
Depress the brake pedal and press the shift lever release
button to shift.
Shift without pres sing the shift lever release button.
Press the shift lever release button and shift.
Shift Position Indicator
(Transmission System Indicator)
Tachometer’s red zone

uuWhen Driving uShifting
432
Driving
■Shift Lever Operation1Shift Lever Operation
NOTICE
When you change the shift position from (D to ( R
and vice versa, come to a complete stop and keep the
brake pedal depressed.
Operating the shift lever be fore the vehicle has come
to a complete standstill can damage the transmission.
Use the shift position indicator to check the lever
position before pulling away.
If the transmission system indicator blinks when
driving, in any shift positi on, there is a problem with
the transmission.
Avoid sudden acceleration and have the transmission
checked by a dealer as soon as possible.
The fuel supply may be cut of f if you drive at engine
speeds in or over the tac hometer’s red zone (engine
speed limit). If this happe ns, you may experience a
slight jolt.
It may not be possible to operate the shift lever if the
brake pedal is applied while the shift lever release
button is held down.
Depress the brake pedal first.
When shifting positions in extremely low
temperatures (-22°F/-30°C), there may be a short
delay before the shift posit ion is displayed. Always
confirm you are in the corr ect shift position before
driving.
Depress the brake pedal and press the shift lever release
button to shift.
Shift without pressing the shift lever release button. Press the shift lever re lease button and shift.
Shift Position Indicator
(Transmission System Indicator)
Tachometer’s red zone
M
(7-Speed Manual Shift Mode)
Indicator
Gear Selection Indicator

uuHonda Sensing ®u Road Departure Mitigation (RDM) System
498
Driving
When you turn the RDM on and off, do the
following.
1. Press the safety support switch.
2. Roll the left selector wheel to the
symbol and push it.
u The message appears on the driver
information interface when the system
becomes on or off.
The RDM is in the previously selected ON or
OFF setting each time you start the engine.
The system may not properly detect lane markings and the position of your vehicle
under certain conditions. Some examples of these conditions are listed below.
■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 la ne lines and the roadway surface.
• 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.
• Shadows of adjacent objects are parallel to lane markings.
• Roadway objects or structures are misinterpreted as lane markers.
• Reflections on the interi or of the windshield.
• Driving at night or in a dark condition such as a tunnel.
■RDM On and Off1RDM On and Off
When you have selected Warning Only from the
customized options using the audio/information
screen, the system does not operate the steering
wheel and braking. 2 Customized Features P. 352
The Vehicle Stability Assist
TM (VSA ®) system, Vehicle
Stability AssistTM (VSA ®) OFF, adaptive cruise control
(ACC) with Low Speed Follow, safety support and
low tire pressure/TPMS indicators may come on in
amber along with a message in the driver information
interface when you set the power mode to ON after
reconnecting the battery.
Drive a short distance at more than 12 mph (20 km/h).
Each indicator should go off. If any do not, have your
vehicle checked by a dealer.
Safety Support Switch Left Selector Wheel
■RDM Conditions and Limitations

uuBraking uBrake System
514
Driving
Your vehicle is equipped with disc brakes at all four wh eels. The brake assist system
increases the stopping force when you depress the brake pedal hard in an
emergency situation. The anti-lock brake system (ABS) helps you retain steering
control when braking very hard.
2 Brake Assist System P. 519
2 Anti-lock Brake System (ABS) P. 518
■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 vibr ation 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
lower gear/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.
Whenever the brakes are activated by CMBS
TM or
another system that automa tically controls braking,
the brake pedal is depressed and released in
accordance with braking function.

518
uuBraking uAnti-lock Brake System (ABS)
Driving
Anti-lock Brake System (ABS)
Helps prevent the wheels from locking up, a nd helps you retain steering control by
pumping the brakes rapidly, much faster than you can.
The electronic brake distribution (EBD) system, which is part of the ABS, also
balances the front-to-rear braking distri bution according to vehicle loading.
You should never pump 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 dow n. On dry pavement, you will need to
press on the brake pedal very hard before the ABS activates. However, you may feel
the ABS activate immediately if yo u are trying to stop on snow or ice.
ABS may activate when you depress the brake pedal when driving on:
• Wet or snow covered roads.
• Roads paved with stone.
• Roads with uneven surfaces, 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 will not be opera ting. 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 lo ckup 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 tire 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 sounds are normal to ABS
systems and are no cause for concern.
* Not available on all models

539
Maintenance
This chapter discusses basic maintenance.
Before Performing MaintenanceInspection and Maintenance ............ 540
Safety When Performing Maintenance..... 541Parts and Fluids Used in Maintenance Service ........................................... 542
Maintenance Minder
TM..................... 543
Maintenance Under the Hood
Maintenance Items Under the Hood ..... 550Opening the Hood ........................... 552
Recommended Engine Oil ................ 553
Oil Check ......................................... 554
Adding Engine Oil ............................ 556
Changing the Engine Oil and Oil Filter ..... 557
Engine Coolant ................................ 561
Transmission Fluid ............................ 563
Brake Fluid ....................................... 564
Refilling Window Wa sher Fluid......... 565
Replacing Light Bulbs ....................... 566
Checking and Maintaining Wiper
Blades .......................................... 574
Checking and Maintaining Tires
Checking Tires ................................. 577
Tire and Loading Information Label ...... 578Tire Labeling .................................... 578DOT Tire Quality Grading (U.S. Vehicles)....... 580Wear Indicators................................ 582 Tire Service Life ................................ 582
Tire and Wheel Replacement ........... 583
Tire Rotation .................................... 584
Winter Tires ..................................... 585
Battery ............................................... 586
Remote Transmitter Care
Replacing the Button Battery ........... 588
Climate Control System Maintenance.... 589Cleaning
Interior Care .................................... 590
Exterior Care.................................... 592
Accessories and Modifications ........ 595

552
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. Push the hood latch lever (located under
the front edge of the hood to the center) to
the side 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 wipe rs, resulting in possible
damage to the hood and/or the wipers.
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.
Do not open the hood while the Auto Idle Stop
function is activated.
3WARNING
The hood support rod can become very hot
due to heat fr om the engine.
To ensure against po ssible burns, do not
handle the metal section of the rod:
Use the foam grip instead.
2.0 L engine models
Models with Auto Idle Stop
Hood Release Handle
Pull
Lever
Support Rod
Grip
Clamp