2021 HONDA ACCORD SEDAN climate control

413
uuTowing a Trailer uTowing Behind a Motorhome
Driving
• Monitor your temperature gauge. If it nears the red (Hot) mark, turn off the
climate control system and reduce speed. Pull to the side of the road safely to cool
down the engine if necessary.
Towing Behind a Motorhome
Your vehicle is not designed to be towed behind a motorhome. If your vehicle needs
to be towed in an emergency, refer to the emergency towing information.
2Emergency Towing P. 628
■Driving in Hilly Terrain

414
Driving
When Driving
Starting the Engine
1.Make sure the parking brake is applied.
u The parking brake and brake system
indicator (red) comes on for 30 seconds
when you pull up the electric parking
brake switch.
2. Depress the brake pedal.
2. Check that the tr ansmission is in
(P, then
depress the brake pedal.
u Although it is possible to start the vehicle
in
(N, it is safer to start it in (P.
1Starting the Engine
Keep your foot firmly on the brake pedal when
starting the engine.
The engine is harder to st art in cold weather and in
thinner air found at altit udes above 8,000 feet (2,400
meters).
When starting the engine in cold weather, turn off all
electrical accessories such as the lights, climate
control system and rear de fogger in order to reduce
battery drain.
If you live in a region where winter is extremely cold,
an engine block heater will improve starting and
warming of the engine. Cons ult a dealer for details.
If the exhaust system sounds abnormal or you can
smell exhaust gas inside the vehicle, have your vehicle
checked by a dealer. There may be a problem with
the engine or exhaust system.
The immobilizer system pr otects your vehicle from
theft.
If an improperly c oded device is used, the engine’s
fuel system is disabled. 2 Immobilizer System P. 184
Electric Parking Brake Switch
Brake Pedal
Automatic transmission models
Brake Pedal
Continuously variable transmission models

uuWhen Driving uStarting the Engine
418
Driving
1Remote 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 remote.
•The engine is stopped by using the remote.•The security system alarm is activated.•The door is unlocked with the built-in key.•The hood is open.•The engine coolant temper ature is extremely high.•The battery is low.•The engine oil pressure is low.•The malfunction indicator la mp comes on if there is
a problem with the emissions control systems.
•You press the ENGINE START/STOP button
without depressing the brake pedal.
•The transmission is in a position other than ( P.
•You press the shift lever release button.
While the engine is running, the vehicle will
automatically preconditi on inside the vehicle.
When it is warm outside:
•The climate control system is activated in auto
mode.
When it is cold outside:
•The defroster is activated at a moderately warm
temperature.
•The rear defogger and door mirror heaters are
activated.
•The seat heaters* and heated steering wheel* are
activated. 2 Heated Steering Wheel
* P. 236
2 Front Seat Heaters* P. 237
2 Front Seat Heaters and Seat Ventilation*
P. 238
Automatic transmission models
Continuously variable transmission models
* Not available on all models

436
uuWhen Driving uECON Mode
Driving
ECON Mode
The ECON button turns the ECON mode on and off.
The ECON mode helps you improve your fuel economy by adjusting the
performance of the engine, transmiss ion and climate control system.
*1 : Models without the adaptive damper system
*2 : Models with the adaptive damper system
*3 : Models without SPORT mode
*4 : Models with SPORT mode
1ECON Mode
While in ECON mode, the climate control system has
greater temperature fluctuation.
*1
*2 *3
*4ECON
Button
ECON Mode Indicator

437
uuWhen Driving uAuto Idle Stop*
Continued
Driving
Auto Idle Stop*
To help maximize fuel economy, the engine automatically stops when the vehicle
comes to a stop, depending on environmental and vehicle operating conditions. The
indicator (green) comes on at this time.
The environmental and vehicle conditions that
impact Auto Idle Stop system operation are
varied.
2Auto Idle Stop Activates When: P. 439
The engine then restarts once the vehicle is
about to move again, and the indicator
(green) goes off.
2The Engine Automatically Restarts When:
P. 441
If the driver’s door is opened while the
indicator (green) come s on, a buzzer sounds
to notify you that the Auto Idle Stop function
is in operation.
1 Auto Idle Stop*
The 12-volt battery insta lled in this vehicle is
specifically designed for a m odel with Auto Idle Stop.
Using a 12-volt battery other than this specified type
may shorten the 12-volt ba ttery life, and prevent
Auto Idle Stop from activati ng. If you need to replace
the 12-volt battery, make sure to select the specified
type. Ask a dealer for more details.
The duration of the Au to Idle Stop operation:
•Increase in the ECON mode, compared to when the
ECON mode is off, with climate control in use.
2 ECON Mode P. 436
Auto Idle Stop
Indicator (Green)
* Not available on all models

Continued439
uuWhen Driving uAuto Idle Stop*
Driving
The vehicle stops with the shift position in (D and the brake pedal depressed.
When you shift into
(P quickly with depressing the brake pedal, the Auto Idle Stop
continues to operate, even if the brake pedal is released. u If you move the shift lever slowly, the engine may automatically restarts.
■Auto Idle Stop does not activate when:
• The Auto Idle Stop OFF button is pressed.
• The driver’s seat belt is not fastened.
• The engine coolant temperature is low or high.
• The engine is started with the hood open.
u Turn off the engine. Close the hood before you restart the engine to activate
Auto Idle Stop.
• The battery charge is low.
• The internal temperature of the battery is 41°F (5°C) or less.
• The transmission fluid temperature is low or high.
• The transmission is in a position other than
(D.
• The vehicle comes to a stop again before the vehicle speed reaches 3 mph (5 km/h)
after the engine starts.
• Stopped on a steep incline.
• is on (indicator on).
• The climate control system is in use, and the temperature is set to Hi or Lo .
• The climate control system is in use, and the outside temperature is below -4°F
(-20°C) or over 104°F (40°C).
■Auto Idle Stop Activates When:1 Auto Idle Stop Activates When:
Do not open the hood while the Auto Idle Stop
function is activated.
If the hood is opened, the engine will not restart
automatically.
In this case, restart the engine with the ENGINE
START/STOP button.
2 Starting the Engine P. 414
When ACC with Low Speed Follow is in operation,
the vehicle stops without de pressing the brake pedal
and Auto Idle Stop may activate.
In such cases, the engine may restart if you change
the shift position other than
( D.
Pressing the ENGINE START/STOP button causes
the engine to no longer restar ts automatically. Follow
the standard procedure to start the engine.
2 Starting the Engine P. 414

440
uuWhen Driving uAuto Idle Stop*
Driving
■Auto Idle Stop m ay not activate when:
• The steering wheel is operated.
• Altitude is high.
• The vehicle is stopped by braking suddenly.
• The vehicle is repeated ly accelerated and dece lerated at a low speed.
• The fan speed is high.
• The climate control system is in use, and there is a significant difference between
the set temperature and the actual interior temperature.
• The climate control system is in use, and humidity in the interior is high.

441
uuWhen Driving uAuto Idle Stop*
Driving
• The brake pedal is released (without the automatic brake hold system activated).
• The accelerator pedal is depressed (with th e automatic brake hold system activated).
2Automatic Brake Hold P. 515
■The engine restarts even if the brake pedal is depressed*1 when:
• The Auto Idle Stop OFF button is pressed.
• A steering wheel is operated.
• The transmission is put into
(R, (S*, and (L*, or when it is set from (N to (D.
u If you put the tra nsmission into
(P after the Auto Idle Stop activates, the Auto
Idle Stop continues to operate. In this case, the engine restarts when you move
the shift lever other than
(P. When operating the shift lever, the brake pedal
must be firmly depressed.
• The pressure on the brake pedal is reduced and the vehicle starts moving while
stopped on an incline.
• The brake pedal is released slightly during a stop.
• The battery charge becomes low.
• The accelerator pedal is depressed.
• The driver’s seat belt is unlatched.
• is on (indicator on).
• The climate control system is in use, and the difference between the set
temperature and actual interior temperature becomes significant.
• The climate control system is being used to dehumidify the interior.
• The vehicle ahead of you starts again when your vehicle stops automatically with
ACC with Low Speed Follow.
Briefly keeps the brake applied after releasin g the brake pedal to restart the engine.
This can keep your vehicle from unexpe ctedly moving while on an incline.
■The Engine Automatically Restarts When:
■Starting Assist Brake Function
1The Engine Automatically Restarts When:
If you are using an electroni c device during Auto Idle
Stop, the device may tempor arily be turned off when
the engine restarts.
1 The engine restarts even if the brake pedal is depressed*1 when:
*1: With the automatic brak e hold system activated,
you can release the brake pedal while Auto Idle Stop
is in operation.
If the automatic brake hold system has been turned
off, or if there is a problem with the system, the
engine will restart automatically when you release
the brake pedal.
2 Automatic Brake Hold P. 515
* Not available on all models