2017 Lexus IS200t stop start

2084-2. Driving procedures
IS200t_EE(OM53D77E)
NOTICE
■To prevent battery discharge
●Do not leave the engine switch in ACCESSORY or IGNITION ON mode for long
periods of time without the engine running.
●If “ACCESSORY” or “IGNITION ON” is displayed on the meters while the engine is
not running, the engine switch is not off. Exit the vehicle after turning the engine
switch off.
●Do not stop the engine when the shift lever is in a position other than P. If the engine is
stopped in another shift lever position, the engine switch will not be turned off but
instead be turned to ACCESSORY mode. If the vehicle is left in ACCESSORY
mode, battery discharge may occur.
■When starting the engine
●Do not race a cold engine.
●If the engine becomes difficult to start or stalls frequently, have your vehicle checked
by any authorized Lexus retailer or Lexus au thorized repairer, or any reliable repairer
immediately.
■Symptoms indicating a malfun ction with the engine switch
If the engine switch seems to be operating s omewhat differently than usual, such as the
switch sticking slightly, th ere may be a malfunction. Contact any authorized Lexus
retailer or Lexus authorized repairer, or any reliable repairer immediately.

2904-5. Using the driving support systems
IS200t_EE(OM53D77E)
◆When the shift lever is in D
■Stopping the engine
While driving with the shift lever in D,
depress the brake pedal and stop
the vehicle.
The Stop & Start indicator will come
on.
■Restarting the engine
Release the brake pedal.
The Stop & Start indicator will turn off.
Stop & Start system
: If equipped
The Stop & Start system stops and restarts the engine according to the brake
pedal or shift lever operation when the vehicle is stopped.
Stop & Start system operation

2914-5. Using the driving support systems
4
Driving
IS200t_EE(OM53D77E)
◆When the shift lever is shifted to P
■Stopping the engineWhile driving with the shift lever
in D, depress the brake pedal and
stop the vehicle.
The engine will be stopped by the
Stop & Start system and the Stop &
Start indicator will come on.
Shift the shift lever to P.
(  P. 209)
The engine will remain stopped.
The engine may restart if the shift lever is shifted from D to P immediately after the
engine is stopped by the Stop & Start sy stem. Additionally, if the engine is not
stopped by the Stop & Start system when vehicle is stopped with the shift lever in
D, it may be stopped by the Stop & Start system when the shift lever is shifted to P.
■Restarting the engine
With the brake pedal depressed, shift the shift lever to a position other than P.
(  P. 209)
If the brake pedal was released after the engine was stopped by the Stop & Start
system, the engine will restart when the brake pedal is depressed again. If the
brake pedal was not released after the engine was stopped by the Stop & Start sys-
tem, the engine will restart when the shift le ver is shifted to a position other than P.
1
2

2924-5. Using the driving support systems
IS200t_EE(OM53D77E)
Press the Stop & Start cancel switch to
disable the Stop & Start system.
The Stop & Start cancel indicator will
come on.
Pressing the switch again will enable the
Stop & Start system and the Stop & Start
cancel indicator will turn off.
■Automatic reactivation of the Stop & Start system
Even if the Stop & Start system is disabled by the Stop & Start cancel switch, it
will be automatically re-enabled once the engine switch is turned off and then
the engine is started.
■If the Stop & Start cancel switch is pressed while the vehicle is stopped
●When the engine is stopped by the St op & Start system, pressing the Stop
& Start cancel switch will restart the engine.
From the next time the vehicle is st opped (after Stop & Start system has
been disabled), the engine will not be stopped.
●With the Stop & Start system disabl ed, pressing the Stop & Start cancel
switch will re-enable the system but not stop the engine.
From the next time the vehicle is st opped (after Stop & Start system has
been enabled), the engine will be stopped.
Disabling the Stop & Start system

2934-5. Using the driving support systems
4
Driving
IS200t_EE(OM53D77E)
After the engine is stopped by the Stop & Start system when the vehicle is on an
incline, brake force is temporarily maintained to prevent rolling backwards until
the engine is restarted and drive force is generated.
When drive force is generated, the ma intained brake force is automatically
canceled.
●This function operates on flat surfaces as well as steep inclines.
●Sound may be generated from the brak es, but this is not a malfunction.
●Brake pedal response may change and vibration may occur, but these are not
malfunctions.
■Operating conditions
●The Stop & Start system is operational when all of the following conditions are met:
• The brake pedal is being depressed firmly.
• The shift lever is in D or P.
• Normal mode or Eco drive mode is selected as the driving mode.
• is off.
• The driver’s seat belt is fastened.
• The engine is adequately warmed up.
• The driver’s door is closed.
• The accelerator pedal is not being depressed.
• The outside temperature is -5°C (23°F) or higher.
• The hood is closed.
●In the following situations the engine may not be stopped by the Stop & Start system.
This is not a malfunction of the Stop & Start system.
• The air conditioning system is being used when the ambient temperature is high or
low.
• The battery is not sufficiently charged, such as if the vehicle has been parked for a long time and the battery charge has decreased, the electric load is large, the bat-
tery temperature is excessively low or the battery has deteriorated, or is undergoing
a periodic recharge.
• The brake booster vacuum is low.
• The vehicle is stoppe d on a steep incline.
• The steering wheel is being operated.
• Due to traffic or other circumstances the vehicle is stopped repeatedly.
• The vehicle is being driven in a high altitude area.
• Engine coolant temperature or transmissi on fluid temperature is extremely low or
high.
• The battery fluid temperature is extremely low or high.
• For a while after the battery terminals have been disconnected and reconnected.
• For a while after the battery has been replaced.
• Vehicles with a power heater: The power heater is being used.
Hill-start assist control

2944-5. Using the driving support systems
IS200t_EE(OM53D77E)
●In the following situations, the engine will restart automatically if the engine is stopped
by the Stop & Start system. (To enable stoppi ng of the engine by the Stop & Start sys-
tem, drive the vehicle.)
• The air conditioning system is turned on.
• is turned on.
• The steering wheel is operated.
• The shift lever is shifted to M, N or R from D.
• The shift lever is shifted from P.
• Sport mode or snow mode is selected as the driving mode.
• The driver’s seat belt is unfastened.
• The driver’s door is opened.
• The accelerator pedal is depressed.
• The Stop & Start cancel switch is pressed.
• The vehicle starts to roll on an incline.
• Vehicles with a power heater: The power heater is turned on.
●In the following situations, the engine may re start automatically if the engine is stopped
by the Stop & Start system. (To enable stoppi ng of the engine by the Stop & Start sys-
tem, drive the vehicle.)
• The brake pedal is pumped or strongly depressed.
• The air conditioning system is being used.
• The battery is not sufficiently charged.
■If the steering wheel is turned shortly after the engine has started
If the steering wheel is turned shortly after the engine has been started by the Stop &
Start system, the steering wheel may feel heavy.
■Hood
●If the hood is opened while the engine is stopped by the Stop & Start system with the
shift lever in D, the engine will stall and will not be able to be restarted by the automatic
engine start function. In this case, restart the engine using the normal engine starting
procedure. ( P. 204)
●If the hood is opened while the engine is stopped by the Stop & Start system with the
shift lever in P, the engine will be restarted automatically.
●Even if the hood is closed after the engine is started with the hood open, the Stop &
Start system will not operate. Close the hood, turn the engine switch off, wait 30 sec-
onds or more, and then start the engine.
■When to use the Stop & Start system
●When the system does not operate, is canceled, or is malfunctioning, warning mes-
sages and a warning buzzer are used to inform the driver. ( P. 296)
●If the engine switch is pressed when the en gine is stopped by the Stop & Start system,
the engine will stall and will not be able to be restarted by the automatic engine start
function. In this case, restart the engine using the normal engine starting procedure.
(  P. 204)
●When the engine is restarted by the Stop & Start system, the power outlet may be tem-
porarily unusable, but this is not a malfunction.
●Installation and removal of electrical components and wireless devices may affect the
Stop & Start system. Contact any authorized Lexus retailer or Lexus authorized
repairer, or any reliable repairer for details.

2954-5. Using the driving support systems
4
Driving
IS200t_EE(OM53D77E)
■If the windshield is fogged up while the engine is stopped by the Stop & Start system
Turn on. (The engine will start due to the automatic engine start function.):
P. 458
If the windshield fogs up frequently, press the Stop & Start cancel switch to disable the
system.
■If an odor comes from the air conditioning system while the engine is stopped by the
Stop & Start system
Press the Stop & Start cancel switch to deactivate the Stop & Start system.
■Air conditioning system operation while the engine is stopped by the Stop & Start sys-
tem
●If the air conditioning system is being us ed in automatic mode, the fan speed may be
reduced or the fan may be stopped while the engine is stopped by the Stop & Start sys-
tem in order to reduce changes in the cabin temperature.
●To ensure air conditioning system performanc e when the vehicle is stopped, disable the
Stop & Start system by pressing the Stop & Start cancel switch.
■Changing the idling stop time with the air conditioning system on
The length of time the Stop & Start system will operate when the air conditioning system
is on can be changed by performing the followi ng operation. (The length of time the Stop
& Start system will operate when the air condit ioning system is off cannot be changed.)
●Setting by pressing and holding the Stop & Start cancel switch
Each time the Stop & Start cancel switch is pressed and held for 3 seconds or more, the
system changes between standard and extended. The system status can be confirmed
on the multi-information display screen. ( P. 97)
●Settings using the multi-information display
( P. 106) or ( P. 107).
■The Stop & Start system protection function
●When the volume of the audio system is ex cessively high, sound output from the audio
system may suddenly be cut of f in order to reduce battery consumption. To prevent the
audio system from being cut off, keep the vo lume of audio system at a moderate level.
If the audio system has been cut off, turn the engine switch off, wait for 3 seconds or
more and then turn it to ACCESSORY mode or IGNITION ON mode to re-enable
the audio system.
●The audio system may not be activated if the battery terminals are disconnected and
then reconnected. If this occurs, turn the engine switch off and then turn it to IGNI-
TION ON mode and then off twice to activate the audio system.
■To prevent damage to the turbocharger
Allow the engine to idle immediately after driving at high speeds or long periods of uphill
driving. To allow the engine idle when the vehicle is stopped, disable the Stop & Start sys-
tem by pressing the Stop & Start cancel switch. ( P. 292)
■Replacing the battery
P. 620
■Displaying the Stop & Start system status
P. 106

2964-5. Using the driving support systems
IS200t_EE(OM53D77E)
■Multi-information display messages
If the following situations, and a message may be displayed on the multi-informa-
tion display.
●When the engine cannot be stopped by the Stop & Start system
MessageDetails
“Depress Brake
Firmly to Activate.”
The brake pedal is not depressed enough. If the brake pedal is depressed further, the sys-
tem will operate.
“For Climate Con-
trol.”
• The air conditioning system is being used when the ambient temperature is high or low.
If the difference between the set temperature
and cabin temperature is small, the system will be
enabled.
• is ON.
“Battery Charging.”
• The battery charge amount may be low. Engine stop is temporarily prohibited to priori-
tize charging of the battery, but if the engine is
operated for a short while, engine stop is
allowed.
• A refresh charge may be occurring, such as when the battery is undergoing a periodic
recharge, for a while after the battery terminals
have been disconnected and reconnected, for
a while after the battery has been replaced, etc.
After a refresh charge of approximately 5 to 60
minutes completes, the system can be operated.
• The engine may have been started with the hood opened.
Close the hood, turn the engine switch off, wait
30 seconds or more, and then start the engine.
• The battery may be cold.
Operating the engine for a short while allows the
system to recover due to the temperature
increase in the engine compartment.
• The battery may be extremely hot. If the engine compartment is allowed to cool suf-
ficiently, the system recovers.
If the message is displaye d continuously (more than
60 minutes), the battery may have deteriorated.
Contact any authorized Lexus retailer or Lexus
authorized repairer, or any reliable repairer.