ECO mode Lexus HS250h 2010 Using the Bluetooth audio system / LEXUS 2010 HS250H (OM75006U) Workshop Manual

498
5-2. Steps to take in an emergency
The tire pressure warning system may be disabled in the following conditions:
(When the condition becomes normal, the system will work properly.)
●If electronic devices or facilities using similar radio wave frequencies are nearby.
●If a radio set at similar frequency is in use in the vehicle.
●If a window tint that affects the radio wave signals is installed.
●If there is a lot of snow or ice on the vehicle, particularly around the wheels or
wheel housings.
●If non-genuine Lexus wheels are used (Even if you use Lexus wheels, the tire
pressure warning system may not work properly with some types of tires.)
●If tire chains are used.
■If the tire pressure warning light comes on after flashing frequently for 1 minute
If the tire pressure warning light comes on after flashing frequently for 1 minute
when the “POWER” switch is turned to ON mode, have it checked by your Lexus
dealer.
■Customization that can be configured at Lexus dealer
The vehicle speed linked seat belt reminder buzzer can be disabled. 
(Customizable features P. 5 7 2 )
CAUTION
■When the electric power steering system warning light comes on
The steering wheel may become extremely heavy. 
If the steering wheel becomes heavier than usual when operating, hold firmly and
operate it using more force than usual.
■If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could cause loss of
vehicle control and result in death or serious injury.
●Stop your vehicle in a safe place as soon as possible. Adjust the tire inflation pres-
sure immediately.
●If the tire pressure warning light comes on even after tire inflation pressure adjust-
ment, it is probable that you have a flat tire. Check the tires. If a tire is flat, change
it with the spare tire and have the flat tire repaired by the nearest Lexus dealer.

5
When trouble arises
503
5-2. Steps to take in an emergency
(If equipped)
Indicates a malfunction in the intuitive parking assistA buzzer also sounds.
The malfunctioning assi st-sensor is flashing.
(Flashes)
Indicates a malfunction in the cruise control system
A buzzer also sounds.
Press the “ON-OFF” button once to deactivate the
system, and then press the button again to reactivate
the system.
(Flashes)
(If equipped)
Indicates a malfunction in the radar cruise control
system A buzzer also sounds.
Stop the vehicle in a safe place. Turn the “POWER”
switch off and then turn it to ON mode again to reset
the cruise control system.
Indicates a malfunction in the EPS (Electric Power
Steering) systemA buzzer also sounds.
If the steering wheel becomes heavier than usual
when operating, hold firm ly and operate using more
force than usual.
Wa r n i n g m e s s a g eDetails

5
When trouble arises
511
5-2. Steps to take in an emergency
(Flashes)
Indicates that the driver’s
door was opened with the
shift position in any posi-
tion other than P with the
hybrid system operatingThe warning buzzer
sounds continuously.
Change the shift position
to P.
Indicates that the EV
drive mode is not avail-
able*A buzzer also sounds.
The reason the EV drive
mode is not available
(the vehicle is idling, bat-
tery charge is low, speed
is higher than the EV
drive mode operating
speed range, accelera-
tor pedal is depressed
too much) may be dis-
played.
Use the EV drive mode
when it becomes avail-
able.
Wa r n i n g m e s s a g eDetailsCorrection procedure

5
When trouble arises
519
5-2. Steps to take in an emergency
Once
(Flashes)
The driver's door
was opened and
closed with the
“POWER” switch
turned off and
then the
“POWER” switch
was put in
ACCESSORY
mode twice with-
out the hybrid sys-
tem being started.
Press the
“POWER” switch
while depressing
the brake pedal.
During a hybrid
system starting
procedure in the
event that the
electronic key was
not functioning
properly 
( P. 5 3 3 ) , t h e
“POWER” switch
was touched with
the electronic key.
Press the
“POWER” switch
within 10 seconds
of the buzzer
sounding.
Interior
buzzerExterior buzzerWa r n i n g m e s s a g eDetailsCorrection
procedure

5
When trouble arises
531
5-2. Steps to take in an emergency
Emergency start function
When the hybrid system does not start, the following steps can be used as
an interim measure to start the hybrid system if the “POWER” switch is
functioning normally:Set the parking brake.
Turn the “POWER” switch to ACCESSORY mode.
Press and hold the “POWER” swit ch for abou
t 15 seconds while
depressing the brake pedal firmly.
Even if the hybrid system can be started using the above steps, the system
may be malfunctioning. Ha
ve the vehicle inspected by your Lexus dealer.
■The interior lights and headlights do not turn on, or the horn does
not sound.
One of the following may be the cause of the problem:
●One or both of the 12-
volt battery terminals may be discon -
nected.
● The 12-
volt battery may be discharged. (P. 5 3 6 )
Contact your Lexus dealer if the problem cannot be repaired, or if
repair procedures are unknown.

5
When trouble arises
535
5-2. Steps to take in an emergency
To change “POWER” switch modes: Within 10 seconds of the
buzzer sounding, release the brake pedal and press the
“P
OWER” switch. Modes can be changed each time the switch is
pressed. ( P. 1 4 8 )
To start the hybrid system: Press the “POWER” switch within 10
seconds of the buzz
er sounding, keeping the brake pedal
depressed.
In the event that the hybrid system still cannot be oper
ated, contact your
Lexus dealer.
■Stopping the hybrid system
In the same method as the normal hybrid system stopping procedure, completely
stop
the vehicle and then press the “POWER” switch.
■Replacing the key battery
As the above procedure is a temporary measure, it is recommended that the elec -
tronic key battery be replaced immediately when the battery is depleted. 
(  P. 4 5 3 )
■When the electronic key does not work properly
Make sure that the smart access system wi th
push-button start has not been deacti-
vated in the customization setting. If it is off, turn the function on. 
(Customizable features  P. 5 7 2)

5
When trouble arises
537
5-2. Steps to take in an emergency
Connect the jumper cables according to the following procedure:
Connect a positive jumper cable clamp to the exclusive jump start-
ing terminal on your vehicle
Connect the clamp on the other end of the positiv
e cable to the pos-
itive (+) battery terminal on the second v
ehicle
Connect a negative cable clamp to the negative (-) battery terminal
on the second vehicle
Connect the clamp at the other end of the negative cable to a solid,
stationary, unpainted metallic point aw
ay from the exclusive jump
starting terminal and any moving part s, as shown in the illustration.
Start the engine of the second v
ehicle. Increase the engine
speed slightly and maintain that le
vel for approximately 5 min-
utes to recharge the 12-volt battery of your vehicle.
Maintain the engine sp eed of the second v
ehicle and start the
hybrid system of your vehicle by turning the “POWER” switch
to ON mode.
Make sure the “READY” indicator comes on. If the indicator
does not come on, contact your Lexus dealer.
Once the hybrid system has star
ted, remove the jumper cables
in the exact reverse order from which they were connected.

569
6-1. Specifications
6
Vehicle specifications
Intended outboard side-
wall
(a) The sidewall that contains a whitewall, bears white lettering, or bear s manufacturer, brand,
and/or model name molding that is higher or
deeper than the same molding on the other side-
wall of the tire, or
(b) The outward facing sidewall of an asymmetrical
tire that has a particular side that must always
face outward when mounted on a vehicle
Light truck (LT) tire
A tire designated by its manufacturer as primarily
intended for use on lightweight trucks or multipur-
pose passenger vehicles
Load ratingThe maximum load that a tire is rated to carry for a
given inflation pressure
Maximum load ratingThe load rating for a tire at the maximum permissible
inflation pressure for that tire
Maximum permissible
inflation pressureThe maximum cold inflation pressure to which a tire
may be inflated
Measuring rimThe rim on which a tire is fitted for physical dimension
requirements
Open spliceAny parting at any junction of tread, sidewall, or
innerliner that extends to cord material
Outer diameterThe overall diameter of an inflated new tire
Overall width
The linear distance between the exteriors of the side-
walls of an inflated tire, including elevations due to
labeling, decorations, or protective bands or ribs
Passenger car tire
A tire intended for use on passenger cars, multipur-
pose passenger vehicles, and trucks, that have a
gross vehicle weight rating (GVWR) of 10,000 lb. or
less.
PlyA layer of rubber-coated parallel cords
Tire related termMeaning

579
6-2. Customization
6
Vehicle specifications
Automatic
air condi-
tioning sys-
tem 
( P. 252)A/C Auto switch
operationAutoManualO——O
Turning on the
windshield
defogger acti-
vates the A/C
OnOff———O
Front seats 
(
P. 6 4 )
Driver’s seat
movement when
exiting the vehi-
cle (on some
models)
Pa r t i a l
Off
O—OO
Full
Multi-infor-
mation dis-
play 
(
P. 1 6 9 )
Eco Driving Indi-
cator LightOnOff—OO—
Pow e r w i n -
dows 
(
P. 8 6 )
Mechanical key
linked operationOffOn———O
Wireless remote
control linked
operation
Off
On
(Open only)
———O
Buzzer sounds if
operated using
wireless remote
OnOff———O
ItemFunctionDefault settingCustom- ized
setting

595
Alphabetical index
Electric power steering ......................225
Electronic keyIf the electronic key does not 
operate properly ............................ 533
Emergency, in case of If the electronic key does not 
operate properly ............................ 533
If the engine will not start ...............530
If the hybrid system will not 
start........................................................530
If the 12-volt battery is 
discharged ........................................ 536
If the warning buzzer sounds...... 492
If the warning light turns on .......... 492
If the warning message is 
displayed ............................................. 501
If you have a flat tire .......................... 521
If you lose your keys ........................ 532
If you think something is 
wrong................................................... 489
If your electronic key does 
not operate properly.................... 533
If your vehicle becomes stuck .... 545
If your vehicle needs to be  towed ................................................... 483
If your vehicle overheats.................. 541
Emergency flasher Switch ...................................................... 482 Engine
Accessory mode................................. 148
Compartment...................................... 422
Engine switch .........................................147
Hood ......................................................... 419
How to start the engine ....................147
How to start the hybrid 
system ....................................................147
Identification number ...................... 548
If the engine will not start............... 530
If the hybrid system will not 
start ....................................................... 530
Ignition switch ........................................147
Overheating .......................................... 541
Power switch..........................................147
Engine compartment cover ............. 423
Engine coolant Capacity .................................................552
Checking ...............................................428
Preparing and checking before winter .................................... 244
Engine/power control unit coolant Capacity .................................................552
Checking ...............................................428
Preparing and checking before winter .................................... 244
Engine immobilizer system.................. 96E