2017 Lexus IS200t Battery

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.

2204-3. Operating the lights and wipers
IS200t_EE(OM53D77E)
■Light reminder buzzer
A buzzer sounds when the engine switch is turned off or turned to ACCESSORY mode
and the driver’s door is opened while the lights are turned on.
■Automatic headlight leveling system
The level of the headlights is automatically ad justed according to the number of passen-
gers and the loading condition of the vehicle to ensure that the headlights do not inter-
fere with other road users.
■Customization
Settings (e.g. light sensor se nsitivity) can be changed.
(Customizable features: P. 646)
NOTICE
■To prevent battery discharge
Do not leave the lights on longer than necessary when the engine is not running.

2514-5. Using the driving support systems
4
Driving
IS200t_EE(OM53D77E)
■Operational conditions
Availability of the pedestrian detection function and pre-collision braking function
depend on the region in which the vehicle was sold.
Read the following for details:
Region A
(The pedestrian detection fu nction and pre-collision braking function are available)
The pre-collision system is en abled and the system determin es that the possibility of a
frontal collision with a vehicle or pedestrian is high.
Each function is operational at the following speeds:
●Pre-collision warning:
• Vehicle speed is between approximately 10 and 180 km/h (7 and 110 mph). (For
detecting a pedestrian, vehicle speed is between approximately 10 and 80 km/h [7
and 50 mph].)
• The relative speed between your vehicle and the vehicle or pedestrian ahead is approximately 10 km/h (7 mph) or more.
●Pre-collision brake assist:
• Vehicle speed is between approximately 30 and 180 km/h (19 and 110 mph). (Fordetecting a pedestrian, vehicle speed is between approximately 30 and 80 km/h
[19 and 50 mph].)
• The relative speed between your vehicle and the vehicle or pedestrian ahead is approximately 30 km/h (19 mph) or more.
●Pre-collision braking:
• Vehicle speed is between approximately 10 and 180 km/h (7 and 110 mph). (For
detecting a pedestrian, vehicle speed is between approximately 10 and 80 km/h [7
and 50 mph].)
• The relative speed between your vehicle and the vehicle or pedestrian ahead is
approximately 10 km/h (7 mph) or more.
The system may not operate in the following situations:
●If a battery terminal has been disconnected and reconnected and then the vehicle has
not been driven for a certain amount of time
●If the shift lever is in R
●If VSC is disabled (only the pre-collisio n warning function will be operational)
●If the PCS warning light is flashing or illuminated
RegionsFunction availability
Region AThe pedestrian detection function and pre-collision braking
function are available
Region BThe pedestrian detection function is not available and the pre-
collision braking function is available
Region CThe pedestrian detection functi on and pre-collision braking
function are not available

2524-5. Using the driving support systems
IS200t_EE(OM53D77E)
Region B
(The pedestrian detection function is not available and the pre-collision braking func-
tion is available)
The pre-collision system is en abled and the system determin es that the possibility of a
frontal collision with a vehicle is high.
Each function is operational at the following speeds:
●Pre-collision warning:
• Vehicle speed is between approximately 15 and 180 km/h (10 and 110 mph).
• The relative speed between your vehicle and the vehicle ahead is approximately 10
km/h (7 mph) or more.
●Pre-collision brake assist:
• Vehicle speed is between approximately 30 and 180 km/h (19 and 110 mph).
• The relative speed between your vehicle and the vehicle ahead is approximately 30km/h (19 mph) or more.
●Pre-collision braking:
• Vehicle speed is between approximately 15 and 180 km/h (10 and 110 mph).
• The relative speed between your vehicle and the vehicle ahead is approximately 10km/h (7 mph) or more.
The system may not operate in the following situations:
●If a battery terminal has been disconnected and reconnected and then the vehicle has
not been driven for a certain amount of time
●If the shift lever is in R
●If VSC is disabled (only the pre-collisio n warning function will be operational)
●If the PCS warning light is flashing or illuminated

2534-5. Using the driving support systems
4
Driving
IS200t_EE(OM53D77E)
Region C
(The pedestrian detection function and pre-collision braking function are not avail-
able)
The pre-collision system is en abled and the system determin es that the possibility of a
frontal collision with a vehicle is high.
Each function is operational at the following speeds:
●Pre-collision warning:
• Vehicle speed is between approximately 15 and 180 km/h (10 and 110 mph).
• The relative speed between your vehicle and the vehicle ahead is approximately 10
km/h (7 mph) or more.
●Pre-collision brake assist:
• Vehicle speed is between approximately 30 and 180 km/h (19 and 110 mph).
• The relative speed between your vehicle and the vehicle ahead is approximately 30km/h (19 mph) or more.
The system may not operate in the following situations:
●If a battery terminal has been disconnected and reconnected and then the vehicle has
not been driven for a certain amount of time
●If the shift lever is in R
●If VSC is disabled (only the pre-collisio n warning function will be operational)
●If the PCS warning light is flashing or illuminated

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