power steering Lexus IS300h 2017 User Guide

1863-4. Adjusting the steering wheel and mirrors
IS300h_EE(OM53D89E)
To sound the horn, press on or close to
the mark.
■The steering wheel can be adjusted when (power type)
The power switch is in ACCESSORY or ON mode*.
*: If the driver’s seat belt is fastened, the steering wheel can be adjusted regardless of
power switch mode.
■Automatic adjustment of the steering position (if equipped)
A desired steering position ca n be entered to memory and recalled automatically by the
driving position memory system. ( P. 177)
■Power easy access system (if equipped)
The steering wheel and driver’s seat move in accordance with power switch mode and
the driver’s seat belt condition. ( P. 177)
Horn
WARNING
■Caution while driving
Do not adjust the steering wheel while driving.
Doing so may cause the driver to mishandle the vehicle and cause an accident, result- ing in death or serious injury.
■After adjusting the steering wheel (manual type)
Make sure that the steering wheel is securely locked. Otherwise, the steering wheel may move su ddenly, possibly causing an accident, and
resulting in death or serious injury. Also, th e horn may not sound if the steering wheel is
not securely locked.

1883-4. Adjusting the steering wheel and mirrors
IS300h_EE(OM53D89E)
◆Auto anti-glare inside rear view mirror
Responding to the level of brightness of the headlights of vehicles behind, the
reflected light is automatically reduced.
Changing automatic anti-glare func-
tion mode
ON/OFF
When the automatic anti-glare func-
tion is in ON mode, the indicator illu- minates.
The function will set to ON mode
each time the power switch is turned to ON mode.
Pressing the button turns the function
to OFF mode. (The indicator also turns off.)
■To prevent sensor error (veh icles with auto anti-glare inside rear view mirror)
Indicator
To ensure that the sensors operate properly, do
not touch or cover them.
WARNING
Do not adjust the position of the mirror while driving.
Doing so may lead to mishandling of the vehicle and cause an accident, resulting in
death or serious injury.

1913-4. Adjusting the steering wheel and mirrors
3
Operation of each component
IS300h_EE(OM53D89E)
When either “L” or “R” of the mirror select switch is selected, the outside rear
view mirrors will automatically angle down wards when the vehicle is reversing in
order to give a better view of the ground.
To disable this function, select neither “L” nor “R”.
■Adjusting the mirror angle when the vehicle is reversing
With the shift lever in R, adjust th e mirror angle at a desired position.
The adjusted angle will be memorized an d the mirror will automatically tilt to
the memorized angle whenever the shift lever is shifted to R from next time.
The memorized downward tilt position of the mirror is linked to the normal position
(angle adjusted with the shif t lever in other than R). Therefore, if the normal posi- tion is changed after adjustment, th e tilt position will also change.
When the normal position is change d, readjust the angle in reversing.
■Mirror angle can be adjusted when
The power switch is in ACCESSORY or ON mode.
■When disconnecting and reco nnecting battery terminals
The automatic folding/extending mirror function will return to off as default. To turn the
function on, press the switch again to select on.
■When the mirrors are fogged up
The outside rear view mirrors can be cleare d using the mirror defoggers. Turn on the
rear window defogger to turn on the outside rear view mirror defoggers. (P. 474)
■Automatic adjustment of the mirror angle (if equipped)
A desired mirror face angle can be entered to memory and recalled automatically by the
driving position memory. ( P. 177)
■Auto anti-glare function (if equipped)
When the anti-glare inside re ar view mirror is set to automatic mode, the outside rear
view mirrors will activate in conjunction with the anti-glare inside rear view mirror to
reduce reflected light. ( P. 188)
■Using automatic mode in cold weather
When automatic mode is used in cold weat her, the door mirror could freeze up and
automatic stowing and return ma y not be possible. In this case, remove any ice and snow from the door mirror, then either operate th e mirror using manual mode or move the mir-
ror by hand.
■Customization
The automatic mirror folding and extending operation can be changed. (Customizable features: P. 657)
Linked mirror function when reversing (if equipped)

201
4Driving
IS300h_EE(OM53D89E)
4-1. Before driving
Driving the vehicle .....................202
Cargo and luggage ...................209
Trailer towing (vehicles
without a towing
package) ...................................... 210
Trailer towing (vehicles with
a towing package) ..................... 211
4-2. Driving procedures
Power (ignition) switch ............. 219
EV drive mode ............................ 224
Hybrid transmission .................. 226
Turn signal lever .........................233
Parking brake ..............................235
ASC
(Active Sound Control)........ 236
4-3. Operating the lights
and wipers
Headlight switch ......................... 237
Automatic High Beam .............240
Fog light switch ........................... 244
Windshield wipers and
washer .........................................245
4-4. Refueling
Opening the fuel tank cap......253
4-5. Using the driving support
systems
Lexus Safety System+ .............. 257
PCS (Pre-Collision
System) ....................................... 265
LDA (Lane Departure Alert
with steering control) ............ 279
RSA (Road Sign Assist) ..........288
Dynamic radar cruise
control ......................................... 293
Cruise control .............................305
Lexus parking
assist-sensor..............................309
Lexus parking assist
monitor ......................................... 318
BSM
(Blind Spot Moni tor) ............. 334
• BSM function.........................340
• RCTA function...................... 343
Driving mode select
switch ...........................................348
Driving assist systems .............. 352
4-6. Driving tips
Hybrid vehicle
driving tips..................................358
Winter driving tips ...................... 361

2044-1. Before driving
IS300h_EE(OM53D89E)
■Drum-in-disc type parking brake system
Your vehicle has a drum-in-disc type parkin g brake system. This type of brake system needs bedding-down of the brake shoes peri odically or whenever the parking brake
shoes and/or drum are replaced. Have any au thorized Lexus retailer or Lexus authorized
repairer, or any reliable repairer, perform the bedding down operation.
■Operating your vehicle in a foreign country
Comply with the relevant vehi cle registration laws and confirm the availability of the cor-
rect fuel. ( P. 646)
WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury.
■When starting the vehicle
Always keep your foot on the brake pedal while stopped with the “READY” indicator is
illuminated. This prevents the vehicle from creeping.
■When driving the vehicle
●Do not drive if you are unfamiliar with the location of the brake and accelerator ped-
als to avoid depressing the wrong pedal.
• Accidentally depressing the accelerator pedal instead of the brake pedal will result in sudden acceleration that may lead to an accident.
• When backing up, you may twist your body around, leading to a difficulty in oper-
ating the pedals. Make sure to operate the pedals properly. • Make sure to keep a correct driving po sture even when moving the vehicle only
slightly. This allows you to depress the brake and accelerator pedals properly.
• Depress the brake pedal using your right foot. Depressing the brake pedal using your left foot may delay re sponse in an emergency, resulting in an accident.
●The driver should pay extra attention to pedestrians when the vehicle is powered only by the electric motor (traction motor). As there is no engine noise, the pedestrians
may misjudge the v ehicle’s movement.
●Do not drive the vehicle over or stop the vehicle near flammable materials. The exhaust system and exhaust gases can be extremely hot. These hot parts may
cause a fire if there is any flammable material nearby.
●During normal driving, do not turn off the hybrid system. Turning the hybrid system off while driving will not cause loss of steering or braking control, however, power assist
to the steering will be lost. This will make it more difficult to steer smoothly, so you
should pull over and stop the vehicle as soon as it is safe to do so. In the event of an emergency, such as if it becomes impossible to stop the vehicle in
the normal way: P. 567
●Use engine braking (downshift) to maintain a safe speed when driving down a steep hill.
Using the brakes continuously may cause th e brakes to overheat and lose effective-
ness. ( P. 226)

2054-1. Before driving
4
Driving
IS300h_EE(OM53D89E)
WARNING
Observe the following precautions. Failure to do so may result in death or serious injury.
■When starting the vehicle
●Do not adjust the positions of the steering wheel, the seat, or the inside or outside rearview mirrors while driving.
Doing so may result in a loss of vehicle control.
●Always check that all passeng ers’ arms, heads or other parts of their body are not outside the vehicle.
■When driving on slippery road surfaces
●Sudden braking, acceleration and steering may cause tire slippage and reduce your ability to control the vehicle.
●Sudden acceleration, engine braking due to shifting, or changes in engine speed
could cause the vehicle to skid.
●After driving through a puddle, depress the brake pedal to make sure that the brakes
are functioning properly. Wet brake pads may prevent the brakes from functioning
properly. If the brakes on only one side are wet and not functioning properly, steering control may be affected.
■When shifting the shift lever
●Do not let the vehicle roll backward while the shift lever is in a driving position, or roll forward while the shift lever is in R.
Doing so may result in an acci dent or damage to the vehicle.
●Do not shift the shift lever to P while the vehicle is moving. Doing so can damage the transmission and may result in a loss of vehicle control.
●Do not shift the shift lever to R while the vehicle is moving forward.
Doing so can damage the transmission and may result in a loss of vehicle control.
●Do not shift the shift lever to D while the vehicle is moving backward.
Doing so can damage the transmission and may result in a loss of vehicle control.
●Shifting the shift lever to N while the vehicle is moving will disengage the hybrid sys- tem. Engine braking is not av ailable when N is selected.
●Be careful not to shift the shift lever with the accelerator pedal depressed. Shifting the
shift lever to any position other than P or N may lead to unexpected rapid accelera- tion of the vehicle that may cause an accide nt and result in death or serious injury.
■If you hear a squealing or scraping noise (brake pad wear indicators)
Have the brake pads checked and replaced by any authorized Lexus retailer or Lexus authorized repairer, or any reliable repairer as soon as possible.
Rotor damage may result if the pads are not replaced when needed.
Moderate levels of brake pad and disc wear allow enhanced braking power. As a
result, the discs may wear more quickly than conventional brake discs. Therefore, when replacing the brake pads, Lexus recommends that you also have the thickness of the
discs measured.
It is dangerous to drive the vehicle when the wear limits of the brake pads and/or those of the brake discs are exceeded.

2084-1. Before driving
IS300h_EE(OM53D89E)
NOTICE
■When driving the vehicle
●Do not depress the accelerator and brake pedals at the same time during driving, as
this may restrain the hybrid system output.
●Do not use the accelerator pedal or depress the accelerator and brake pedals at the same time to hold the vehicle on a hill.
■When parking the vehicle
Always set the parking brake, and shift the shift lever to P. Failure to do so may cause the vehicle to move or the vehicle may accelerate suddenly if the accelerator pedal is
accidentally depressed.
■Avoiding damage to vehicle parts
●Do not turn the steering wheel fully in either direction and hold it there for an
extended period of time.
Doing so may damage the power steering motor.
●When driving over bumps in the road, drive as slowly as possible to avoid damaging
the wheels, underside of the vehicle, etc.
■If you get a flat tire while driving
A flat or damaged tire may cause the following situations. Hold the steering wheel
firmly and gradually depress the brake pedal to slow down the vehicle.
●It may be difficult to control your vehicle.
●The vehicle will make abnormal sounds or vibrations.
●The vehicle will lean abnormally.
Information on what to do in case of a flat tire (P. 610, 625)
■When encountering flooded roads
Do not drive on a road that has flooded af ter heavy rain etc. Doing so may cause the
following serious damage to the vehicle:
●Engine stalling
●Short in electrical components
●Engine damage caused by water immersion
In the event that you drive on a flooded road and the vehicle is flooded, be sure to have
any authorized Lexus retailer or Lexus auth orized repairer, or any reliable repairer
check the following:
●Brake function
●Changes in quantity and quality of oil and fluid used for the engine, hybrid transmis-
sion, differential, etc.
●Lubricant condition for the pr opeller shaft, bearings and suspension joints (where
possible), and the function of all joints, bearings, etc.

2224-2. Driving procedures
IS300h_EE(OM53D89E)
■Steering lock
After turning the power switch off and openin g and closing the doors, the steering wheel will be locked due to the steering lock func tion. Operating the power switch again auto-
matically cancels the steering lock.
■When the steering lock cannot be released
■Steering lock motor overheating prevention
To prevent the steering lock motor from overheating, operation of the motor may be sus-
pended if the hybrid system is turned on an d off repeatedly in a short period of time. In this case, refrain from operating the hybrid system. After about 10 seconds, the steering
lock motor will resume functioning.
■When “Smart Entry & Start System Malfunction See Owner's Manual” is displayed on the multi-information display
The system may be malfunctioning. Have the vehicle inspected by any authorized Lexus
retailer or Lexus authoriz ed repairer, or any reliable repairer immediately.
■If the “READY” indicator does not come on
In the event that the “READY” indicator does not come on even after performing the
proper procedures for starting the vehicle, contact any authorized Lexus retailer or
Lexus authorized repairer, or any reliable repairer immediately.
■If the hybrid system is malfunctioning
 P. 585
■If the electronic key battery is depleted
 P. 549
■Operation of the power switch
●If the switch is not pressed shortly and firmly, the power switch mode may not change or the hybrid system may not start.
●If attempting to restart the hybrid system immediately after turning the power switch off,
the hybrid system may not start in some cases. After turning the power switch off, please wait a few seconds before restarting the hybrid system.
■If the smart entry & start system has been deactivated by a customized setting
 P. 628
“Steering Wheel Lock Pr ess Power Switch while
Turning Wheel” will be displayed on the multi- information display.
Check that the shift lever is in P. Press the power
switch while turning the steering wheel left and right.

2234-2. Driving procedures
4
Driving
IS300h_EE(OM53D89E)
WARNING
■When starting the hybrid system
Always start the hybrid system while sittin g in the driver’s seat. Do not depress the
accelerator pedal while starting the hy brid system under any circumstances.
Doing so may cause an accident resu lting in death or serious injury.
■Caution while driving
If hybrid system failure occu rs while the vehicle is moving, do not lock or open the
doors until the vehicle reaches a safe and complete stop. Activation of the steering lock in this circumstance may lead to an accident, resulting in death or serious injury.
■Stopping the hybrid system in an emergency
If you want to stop the hybrid system in an emergency while driving the vehicle, press and hold the power switch for more than 2 se conds, or press it briefly 3 times or more
in succession. ( P. 567)
However, do not touch the power switch while driving except in an emergency. Turning the hybrid system off while driving will not cause loss of steering or braking control,
however, power assist to the stee ring will be lost. This will make it more difficult to steer
smoothly, so you should pull over and stop the vehicle as soon as it is safe to do so.
NOTICE
■To prevent 12-volt battery discharge
●Do not leave the power switch in ACCESSORY or ON mode for long periods of time without the hybrid system on.
●If “ACCESSORY” or “IGNITION ON” is di splayed on the meters while the hybrid
system is not operating, the power switch is not off. Exit the vehicle after turning the power switch off.
●Do not stop the hybrid system when the shift lever is in a position other than P. If the
hybrid system is stopped in another shift lever position, the power switch will not be turned off but instead be turned to ACCESSORY mode. If the vehicle is left in
ACCESSORY mode, 12-volt ba ttery discharge may occur.
■When starting the hybrid system
If the hybrid system becomes difficult to st art, have your vehicle checked by any autho-
rized Lexus retailer or Lexus authorized repa irer, or any reliable repairer immediately.
■Symptoms indicating a malfunction with the power switch
If the power switch seems to be operating somewhat 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.

2924-5. Using the driving support systems
IS300h_EE(OM53D89E)
●Side road speed signs may be detected and displayed (if positioned in sight of the cam-
era sensor) while the vehicle is traveling on the main road.
●Roundabout exit road speed signs may be detected and displayed (if positioned in sight
of the camera sensor) while traveling on a roundabout.
■When driving vehicle in country with different speed unit
Since RSA recognizes signs based on the set un it of the meter, it is necessary to change
the set unit of the meter. Adjust the set unit of the meter to the speed unit of signs in the
current location. ( P. 657)
■Turning the system on/off
■Speed limit sign display
If the power switch was last turned off while a speed limit sign was displayed on the multi- information display, the same sign displays again when the power switch is turned to ON
mode.
■Customization
Setting (e.g. speeding warning threshold) can be changed.
(Customizable feature: P. 119)
Select on the settings display
( P. 111)
Press on the steering wheel.
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