run flat Lexus HS250h 2010 Hybrid system / LEXUS 2010 HS250H OWNERS MANUAL (OM75006U)

9
Tail lights P. 183
Rear window defogger P. 260
Tires
●Rotation
● Replacement
● Inflation pressure
● Information
P. 437
P. 521
P. 555
P. 560Side marker lights P. 183
Fuel filler door P. 92
Turn signal lights P. 159
License plate lights
P. 183
Doors P. 57Trunk P. 60

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4-2. Maintenance
Vehicle exterior
ItemsCheck points
Doors/trunk• Do the doors and trunk operate smoothly?
Engine hood• Does the engine hood lock system work properly?
Fluid leaks
• There should not be any signs of fluid leakage after the vehicle has
been parked.
Ti r e s
• Is the tire inflation pressure cor-
rect?
• The tires should not be damaged or excessively worn.
• Have the tires been rotated according to the maintenance
schedule?
• The wheel nuts should not be loose.
CAUTION
■If the hybrid system is operating
Turn the hybrid system off and ensure that there is adequate ventilation before per-
forming maintenance checks.

5
When trouble arises
489
5-1. Essential information
If you think something is wrong
If you notice any of the following symptoms, your vehicle probably needs
adjustment or repair. Contact your Lexus dealer as soon as possible.
■ Visible symptoms
●Fluid leaks under the v
ehicle
(Water dripping from the air conditioning after use is normal.)
● Flat
-looking tires or uneven tire wear
●High engine coolant temper
ature warning light flashes or comes
on
■ A
udible symptoms
●Changes in e
xhaust sound
● Ex
cessive tire squeal when cornering
●Str
ange noises related to the suspension system
●P
inging or other noises related to the hybrid system
■ Oper
ational symptoms
●Engine mis
sing, stumbling or running rough
●A
ppreciable loss of power
●V
ehicle pulls heavily to one side when braking
●V
ehicle pulls heavily to one side when driving on a level road.
● L
oss of brake effectiveness, sp ongy feeling, pedal almost touches
the floor

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5-2. Steps to take in an emergency
CAUTION
■Using the tire jack
Improper use of the tire jack may cause the vehicle to suddenly fall off the jack,
leading to death or serious injury.
●Do not use the tire jack for any purpose other than replacing tires or installing and
removing tire chains.
●Only use the tire jack that comes with this vehicle for replacing a flat tire.
Do not use it on other vehicles, and do no t use other tire jacks for replacing tires
on this vehicle.
●Always check that the tire jack is securely set to the jack point.
●Do not put any part of your body under th e vehicle while it is supported by the
jack.
●Do not start or run the hybrid system while your vehicle is supported by the jack.
●Do not raise the vehicle while someone is inside.
●When raising the vehicle, do not put an object on or under the jack.
●Do not raise the vehicle to a height greate r than that required to replace the tire.
●Use a jack stand if it is necessary to get under the vehicle.
Take particular care when lowering the vehicle to ensure that no one working on or
near the vehicle may be injured.
■Replacing a flat tire
Observe the following precautions to reduce the risk of death or serious injury:
●Do not touch the disc wheels or the area around the brakes immediately after the
vehicle has been driven.
After the vehicle has been driven the disc wheels and the area around the brakes
will be extremely hot. Touching these areas with hands, feet or other body parts
while changing a tire, etc. may result in burns.
●Never use oil or grease on the wheel bolts or wheel nuts. 
Oil and grease may cause the wheel nuts to be excessively tightened, leading to
bolt or disc wheel damage. In addition, the oil or grease can cause the wheel nuts
to loosen and the wheel may fall off, causing a serious accident. Remove any oil or
grease from the wheel bolts or wheel nuts.

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What to do if...
What to do if...
A tire puncturesP. 5 2 1If you have a flat tire
The hybrid system does not start
P. 5 3 0If the hybrid system will not start
P. 9 6Immobilizer system
P. 5 3 6If the vehicle 12-volt battery is dis-
charged
The engine coolant temperature
warning light flashes or come on
Steam can be seen coming 
from under the hood
P. 5 4 1If your vehicle overheats
The key is lostP. 5 3 2If you lose your keys
The 12-volt battery runs outP. 5 3 6If the vehicle 12-volt battery is dis-
charged
The doors cannot be lockedP. 5 7Doors
The horn begins to soundP. 9 8Alarm
The vehicle is stuck in mud or
sandP. 5 4 5If the vehicle becomes stuck
A warning light or indicator
light comes onP. 4 9 2If a warning light turns on or a warning
buzzer sounds...

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GAS STATION INFORMATION
Auxiliary catch leverP. 4 1 9Trunk openerP. 6 0Fuel filler door P. 9 2
Hood lock release lever P. 4 1 9Fuel filler door openerP. 9 2Ti r e i n f l a t i o n p r e s s u r eP. 5 5 5
Fuel tank capacity14.5 gal. (55 L, 12.5 Imp. gal.)
Fuel typeUnleaded gasoline only P. 550
Cold tire inflation 
pressureP. 555
Engine oil capacity
(Drain and refill)qt. (L, Imp. qt.)
With filter 4.5 (4.3, 3.8)
Without filter 4.3 (4.1, 3.6
)
Engine oil typeToyota Genuine Motor Oil or equivalent
Oil grade: ILSAC multigrade engine oil P. 551
Recommended oil viscosity: SAE-0W-20