
Continued555
uuWhen Driving uStarting the Engine
Driving
■To stop the engine1Remote Engine Start with Vehicle Feedback*
•Another registered remo te is in the vehicle.•There is any antenna failure.
•The door is unlocked with the built-in key.
•The engine oil pressure is low.•The engine coolant temper ature is extremely high.
•The telematics unit* malfunctions.
•The security system alarm is not set.
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 not set.•The door is unlocked with the built-in key.
•The hood is open, or any  door, or the tailgate is 
unlocked.
•Any door is open.
•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.
The exterior lights will not flash when the remote 
is out of the smart entry system range.
The engine will not stop.Go within the range, 
and try again.
The exterior lights flash once if 
the engine stops successfully.
* Not available on all models
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557
uuWhen Driving uStarting the Engine
Driving
1. Depress and hold the brake  pedal, then press the ENGINE START/STOP  button.
2. Keeping your right foot on the br ake pedal, press the   button. Select 
(R 
when reversing.
3. With the parking brake applied, release  the brake pedal and gently depress the 
accelerator pedal.
u Make sure the parking brake and  brake system indicator goes off.
2Parking Brake P. 640
2 If the Transmission System Indicator Blinks along with the Warning 
Message P. 746
■Hill start assist system
Hill start assist keeps the brake engaged br iefly to help prevent the vehicle from 
rolling on inclines as you move your foot  from the brake pedal to the accelerator.
Change the gear position to 
(D or (S when facing uphill, or (R when facing 
downhill, then release the brake pedal.
■Starting to Drive1 Starting to Drive
The engine stops when the  gear position is changed 
from 
( P before the  ENGINE START/STOP  button is 
pressed. Follow the step  1 when starting to drive.
You can also release the parking brake by pulling the 
electric parking brake sw itch while depressing the 
brake pedal.
When facing downhill, you  can start your vehicle 
more smoothly by manually releasing it with the 
electric parking brake switch  than by releasing it with 
the accelerator pedal.
When the engine was started using the   button on 
the remote*When the engine was started using the   button on the remote*
When the engine was started in any case
D/S
1 Hill start assist system
Hill start assist may not  prevent the vehicle from 
rolling downhill on a very st eep or slippery slope, and 
will not operate on small inclines.
Hill start assist is not a replacement for the parking 
brake.
Hill start assist will operate even when VSA ® is 
switched off.
* Not available on all models
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![HONDA ODYSSEY 2021  Owners Manual (in English) uuWhen Driving uShifting
564
Driving
■If you want to keep the transmission in (N position [car wash mode]
With the engine running:
1. Press and hold the brake pedal.
2. Select 
(N, then release the  HONDA ODYSSEY 2021  Owners Manual (in English) uuWhen Driving uShifting
564
Driving
■If you want to keep the transmission in (N position [car wash mode]
With the engine running:
1. Press and hold the brake pedal.
2. Select 
(N, then release the](/manual-img/13/34447/w960_34447-565.png)
uuWhen Driving uShifting
564
Driving
■If you want to keep the transmission in (N position [car wash mode]
With the engine running:
1. Press and hold the brake pedal.
2. Select 
(N, then release the button to display (Neutral) (N hold mode on the driver 
information interface.
3. Press and hold 
(N again for two seconds.
u This puts the vehicle in car wash mode which must be used when your vehicle 
is pulled through a conveyor type automatic car wash where you or an 
attendant do not remain in the vehicle.
If the ENGINE STOP/START  button is pressed 
after car wash mode has been activated, the 
power mode will change to ACCESSORY and 
a message will be displayed on the driver 
information interface. u For 15 minutes the gear position remains 
in 
(N with the power mode in 
ACCESSORY. After that, the position 
automatically changes to 
(P and the 
power mode changes to OFF.
u Manually changing to 
(P cancels 
ACCESSORY mode. The 
(P indicator 
comes on and the power mode changes 
to OFF. You must always shift to 
(P 
when car wash mode is no longer 
needed.
1 If you want to keep the transmission in (N position [car wash 
mode]
NOTICE
When transmission is too hot, carwash mode may 
not be available. Let the engine idle and cool down 
transmission.
The transmission may not stay in 
(N position while 
the following indicator is on:
•Transmission system indicator.
•Malfunction indicator lamp.•Charging system indicator.
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568
uuWhen Driving uAuto Idle Stop
Driving
Auto Idle Stop
To help maximize fuel econ omy, the engine automatica lly stops when the vehicle 
comes to a stop, depending on environmen tal 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. 570, 
571
The engine then restarts once the vehicle is 
about to move again,  and the indicator 
(green) goes off.
2 The Engine Automatically Restarts When:  
P. 571
The Auto Idle Stop suspend indicator comes 
on and a message appears on the driver 
information interface when the Auto Idle Stop 
system cannot be activated.
2 Indicators P. 88
If the driver’s door is opened while the 
indicator comes on, a buzzer sounds to notify 
you that the Auto Idle Stop function is in 
operation.
1Auto Idle Stop
The 12-volt battery insta lled in this vehicle is 
specifically designed for a  model 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.
2ECON Button  P. 574
Auto Idle Stop 
Indicator (Green)
Auto Idle Stop 
Suspend Indicator
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Continued569
uuWhen Driving uAuto Idle Stop
Driving
A message associated with Auto Idle St op appears on the driver information 
interface.
2 Indicators  P. 102
To turn the Auto Idle  Stop system off, press 
this button. The Auto Id le Stop system stops.
u The Auto Idle Stop system will stop and 
the indicator will come on.
The Auto Idle Stop syst em is turned on every 
time you start the engine, even if you turned it 
off the last time you drove the vehicle.
■Auto Idle Stop System ON/OFF
1 Auto Idle Stop
If you hold the Auto Idle Stop  OFF button, you can 
disable idle stop messages. 2 Indicators P. 102
1Auto Idle Stop System ON/OFF
If you turn off the Auto Idle Stop system while it is 
activated, the engine will restart.
Auto Idle Stop  OFF Indicator
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uuWhen Driving uAuto Idle Stop
570
Driving
The vehicle stops with  the gear position in (D and the brake pedal depressed.
When you put the  transmission into 
(P, the Auto Idle Stop continues to operate, 
even if the brake pedal is released. u If you depress the brake pedal, the engine may automatically restart.
■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 transmission fluid temperature is low or high.
• 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.
• The transmission is in  a position other than 
(D.
• 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 14°F (−10°C) or less.
• The climate control system is in use, an d the outside temperature is below −4°F 
(−20°C) or over 104°F (40°C).
• The climate control system is in us e, and the temperature is set to Hi or  Lo.
•  is on (indicator on).
• The rear fan is set to maximum speed.
u Auto Idle Stop may not ac tivate under other conditions when the rear climate 
control system is in use.
• When the Intelligent Traction Management is set to  Snow.
■Auto Idle Stop Activates When:1Auto 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 re start automatically.
In this case, restart the engine with the  ENGINE 
START/STOP  button.
2 Starting the Engine  P. 552
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 rest art automatically. Follow 
the standard procedure  to start the engine.
2 Starting the Engine  P. 552
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uuWhen Driving uAuto Idle Stop
572
Driving
■The engine restarts even if  the brake pedal is depressed*1 when:
• The Auto Idle Stop  OFF button is pressed.
• The steering wheel is operated.
• The transmission is put into 
(R or (S, or when it is set from (N to (D.
u If you put the transmission into 
(P after the Auto Idle Stop activates, the Auto 
Idle Stop continues to operate. In this  case, the engine restarts when you 
depress the brake pedal.
• The pressure on the brake pedal is redu ced 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 us e, and the difference between the set 
temperature and actual interior  temperature becomes significant.
• The climate control system is bein g used to dehumidify the interior.
• The rear fan is set to maximum speed.
u Auto Idle Stop may not ac tivate under other conditions when the rear climate 
control system is in use.
• When the Intelligent Traction Management is set to  Snow.
• The vehicle ahead of you starts again when  your vehicle stops automatically with 
ACC with Low Speed Follow.
1 The engine restarts even if the brake pedal is depressed*1 when:
*1: With the automatic brake 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. 644
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uuHonda Sensing ®u Adaptive Cruise Control (ACC) with Low Speed Follow
608
Driving
■A vehicle detected ahead is within  ACC with Low Speed Follow range and 
slows to a stop Your vehicle also stops, automatically. The 
Stopped message appears on the driver 
information interface.
When the vehicle ahead of you starts again, 
the vehicle icon on the driver information 
interface blinks. If you press the  RES/+ or –/
SET  button, or depress the accelerator pedal, 
ACC with Low Speed Follow operates again 
within the prior set speed.
If no vehicle is ahead of you before you 
resume driving, depressing the accelerator 
pedal will resume operation of ACC with Low 
Speed Follow within the prior set speed.1 A vehicle detected ahead is within ACC with Low Speed Follow 
range and slows to a stop
3WARNING
Exiting a vehicle that  has been stopped 
while the ACC with  Low Speed Follow 
system is operating can result in the vehicle 
moving without operator control.
A vehicle that moves without operator 
control can cause a crash, resulting in 
serious injury or death.
Never exit a vehicle when the vehicle is 
stopped by ACC with  Low Speed Follow.
 (green)
 (green)
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