2021 HONDA ACCORD SEDAN ECO mode

589
Maintenance
Climate Control System Maintenance
Air Conditioning
To ensure proper and safe operation, the Society of Automotive Engineers (SAE
J2845) recommends that the refrigerant system only be serviced by trained and
certified technicians.
Never repair or replace the air conditio ning evaporator (cooling coil) with one
removed from a used or salvaged vehicle.
New replacement mobile air conditioning evaporators must be certified (and
labeled) as meeting SAE Standard J2842.
Dust and Pollen Filter
The climate control system is equipped with a dust and pollen filter that collects
pollen, dust, and other debris in the air. The Maintenance MinderTM messages will let
you know when to replace the filter.
We recommend that you repl ace the dust and pollen filter sooner when using your
vehicle in areas with high concentrations of dust.
1 Air Conditioning
NOTICE
Vented refrigerant is harmful to the environment.
To avoid refrigerant from venting, never replace the
evaporator with one re moved from a used or
salvaged vehicle.
Refrigerant in your vehicle’ s air conditioning system is
flammable and can be igni ted during servicing if
proper procedures are not followed.
The air conditioner labe l is found under the hood:
2 Safety Labels P. 79
2 Specifications P. 634, 636
Canadian models
: Caution
: Flammable Refrigerant
: Requires Registered
Technician to Service
: Air Conditioning
System
1Dust and Pollen Filter
If the airflow from the climate control system
deteriorates noticeably, and the windows fog up
easily, the filter may need to be replaced. Please
contact a dealer for replacement.

606
uuEngine Does Not Start uIf the Remote Battery is Weak
Handling the Unexpected
If the Remote Battery is Weak
If the beeper sounds, the To Start, Hold Remote Near Start Button message
appears on the driver information interface, and the ENGINE START/STOP button
flashes, and the engine won’t star t, start the engine as follows:
1.Touch the center of the ENGINE START/
STOP button with the H logo on the
remote while the ENGINE START/STOP
button is flashing. The buttons on the
remote should be facing you.
u The ENGINE START/STOP button
flashes for about 30 seconds.
2. Depress the brake pedal and press the
ENGINE START/STOP button within 10
seconds after the beeper sounds and the
ENGINE START/STOP button changes
from flashing to on.
u If you don’t depress the pedal, the mode
will change to ACCESSORY.

607
uuEngine Does Not Start uEmergency Engine Stop
Handling the Unexpected
Emergency Engine Stop
The ENGINE START/STOP button may be used to stop the engine due to an
emergency situation even while driving. If you must stop the engine, do either of the
following operations:
• Press and hold the ENGINE START/STOP button for about two seconds.
• Firmly press the ENGINE START/STOP button three times.
The steering wheel will not lock. However, because turning off the engine disables
the power assist the engine provides to the steering and braking systems, it will
require significantly more physical effort an d time to steer and slow the vehicle. Use
both feet on the brake pedal to slow down the vehicle and stop immediately in a
safe place.
The transmission automa tically changes to
(P after the vehicle comes to a complete
stop. Then, the power mode changes to VEHICLE OFF.
The power mode is in ACCESSORY when the engine is stopped.
To change the mode to VEHICLE OFF, put the transmission into
(P after the vehicle
comes to a complete stop.
Then press the ENGINE START/STOP button twice without depressing the brake
pedal.
1 Emergency Engine Stop
Do not press the ENGINE START/STOP button while
driving unless it is absolute ly necessary for the engine
to be turned off.
If you press the ENGINE START/STOP button while
driving, the beeper sounds.
Automatic transmission models
Continuously variable transmission models
Continuously variable transmission models for Canadian models

608
Handling the Unexpected
If the Battery Is Dead
Jump Starting Procedure
Turn off the power to electric devices, such as audio and lights. Turn off the engine,
then open the hood. 1.Open the cover on the positive + terminal.
2. Connect the first jump er cable to your
vehicle’s battery + terminal.
3. Connect the other end of the first jumper
cable to the booster battery + terminal.
u Use a 12-volt booster battery only.
u When using an automotive battery
charger to boost your 12-volt battery,
select a lower charging voltage than
15-volt. Check the charger manual for
the proper setting.
4. Connect the second jumper cable to the
booster battery - terminal.1If the Battery Is Dead
Securely attach the jumper cables clips so that they
do not come off when the e ngine vibrates. Also be
careful not to tangle the ju mper cables or allow the
cable ends to touch each other while attaching or
detaching the jumper cables.
3WARNING
A battery can explode if you do not follow
the correct procedure, seriously injuring
anyone nearby.
Keep all sparks, open flames, and smoking
materials away from the battery.
Booster Battery
1.5 L engine models
2.0 L engine models
Booster Battery

Continued609
uuIf the Battery Is Dead uJump Starting Procedure
Handling the Unexpected
5. Connect the other end of the second
jumper cable to the engine mounting bolt
as shown. Do not connect this jumper cable
to any other part.
6. If your vehicle is connected to another
vehicle, start the assisting vehicle’s engine
and increase its rpm slightly.
7. Attempt to start your ve hicle’s engine. If it
turns over slowly, check that the jumper
cables have good metal-to-metal contact.1 If the Battery Is Dead
Battery performance degrades in cold conditions and
may prevent the engi ne from starting.1.5 L engine models
2.0 L engine models
Engine Mounting Bolt
Engine Mounting Bolt

uuIf the Battery Is Dead uJump Starting Procedure
610
Handling the Unexpected
Once your vehicle’s engine has started, re move the jumper cables in the following
order.
1. Disconnect the jumper cable from your vehicle’s ground.
2. Disconnect the other end of the jumper cable from the booster battery -
terminal.
3. Disconnect the jumper cable from your vehicle’s battery + terminal.
4. Disconnect the other end of the jumper cable from the booster battery +
terminal.
Have your vehicle inspected by a n earby service station or a dealer.
■What to Do After the Engine Starts1What to Do After the Engine Starts
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.

635
uuSpecifications u
Continued
Information
■
Brake Fluid
■ Continuously Variable Transmission
Fluid
SpecifiedHonda Heavy Duty Brake Fluid DOT 3
SpecifiedHonda HCF-2
Capacity Change 3.9 US qt (3.7 L)
■ Engine Oil
■ Engine Coolant
Recommended·Honda Genuine Motor Oil 0W-20
·API Premium-grade 0W-20 detergent oil
Capacity Change 3.4 US qt (3.2 L)
Change
including
filter
3.7 US qt (3.5 L)
SpecifiedHonda Long-Life Antifreeze/Coolant Type2
Ratio 50/50 with distilled water
Capacity1.59 US gal (6.03 L)
(change including the remaining
0.17 US gal (0.66 L) in the reserve tank)
■ Tire
*1: Models with 17 inch wheel
*2: Models with 19 inch wheel
Regular
Size225/50R17 94V*1
235/40R19 96V*2
Pressure
psi (kPa [kgf/cm2])
Front32 (220 [2.2])*1
33 (225 [2.25])*2
Rear32 (220 [2.2])*1
33 (225 [2.25])*2
Compact
Spare Size
T135/90D16 102M
*1
T135/80D17 103M*2
Pressure
psi (kPa [kgf/cm2])
60 (420 [4.2])
Wheel SizeRegular17 x 7 1/2J*1
19 x 8 1/2J*2
Compact Spare16 x 4T*1
17 x 4T*2

Index
648
Index
Index
Numbers
7-Speed Manual Shift Mode.................... 433
Operation ................................................ 434
A
ABS (Anti-lock Brake System) ................... 518
Accessories and Modifications ................. 595
Accessory Power Sockets .......................... 231
Adaptive Cruise Control (ACC) with Low
Speed Follow ........................... 103, 104, 472
Adaptive Damper System ......................... 442
Additives
Coolant ................................................... 561
Engine Oil ................................................ 553
Washer .................................................... 565
Additives, Engine Oil ................................ 553
Adjusting
Armrest ................................................... 222
Front Seats .............................................. 212
Head Restraints........................................ 219
Mirrors .................................................... 210
Rear Seats................................................ 216
Steering Wheel ........................................ 209
Agile Handling Assist ................................ 445
Air Conditioning System (Climate Control System) ........................ 240
Changing the Mode ................................ 240
Defrosting the Windshield and Windows ............................................... 241
Dust and Pollen Filter ............................... 589 Recirculation/Fresh Air Mode ................... 240
Sensors ................................................... 243
Synchronized Mode................................. 242
Using Automatic Climate Control ............ 240
Air Pressure ............................... 578, 635, 637
Airbags ........................................................ 46
Advanced Airbags ..................................... 52
After a Collision ........................................ 49
Airbag Care............................................... 63
Event Data Recorder .................................... 0
Front Airbags (SRS) .................................... 49
Indicator.............................................. 60, 93
Knee Airbags............................................. 54
Passenger Front Airbag Off Indicator ......... 61
Sensors ..................................................... 46
Side Airbags .............................................. 57
Side Curtain Airbags.................................. 59
AM/FM Radio ............................................ 278
Android Auto ........................................... 321
Anti-lock Brake System (ABS) .................. 518
Indicator.................................................... 93
Apple CarPlay ........................................... 314
Armrest ..................................................... 222
AT&T Hotspot ........................................... 312
Audio Remote Controls ........................... 250
Audio System ............................................ 246
Adjusting the Sound................................ 272
Audio/Information Screen........................ 254
Display Setup .......................................... 273
Error Messages ........................................ 328
General Information ................................ 330 Home Screen .......................................... 259
How to Update Wirelessly ....................... 266
How to Update with a USB Device .......... 270
How to use Siri Eyes Free ........................ 313
iPod ........................................................ 293
Limitations for Manual Operation ............ 274
MP3/WMA/AAC ..................................... 296
Reactivating ............................................ 249
Remote Controls ..................................... 250
Security Code ......................................... 249
Selecting an Audio Source ...................... 274
Status Area ............................................. 264
System Updates ...................................... 266
Theft Protection ...................................... 249
USB Flash Drives.............................. 296, 331
USB Ports ................................................ 247
Wallpaper Setup ..................................... 257
Audio/Information Screen ....................... 254
Authorized Manuals ................................ 646
Auto Door Locking/Unlocking ................ 180
Customize .............................................. 369
Auto High-Beam ...................................... 199
Indicator ................................................... 94
Auto Idle Stop .......................................... 437
Auto Idle Stop OFF Button ...................... 438
Automatic Brake Hold ............................. 515
Indicator ........................................... 86, 515
Automatic Brake Hold System
Indicator ........................................... 86, 515
Automatic Intermittent Wipers .............. 203
Automatic Lighting .................................. 196