wheel Lexus HS250h 2012 Manual PDF

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4-3. Do-it-yourself maintenance
4
Maintenance and care
HS250h_U_75050U
●Never exceed the vehicle capacity weight.
Passengers and luggage weight should be placed so that the vehicle is bal-
anced.
CAUTION
■Proper inflation is critical to save tire performance
Keep your tires properly inflated. Otherwise, the following conditions may occur
and result in an accident causing death or serious injury:
●Excessive wear
●Uneven wear
●Poor handling
●Possibility of blowouts resulting from overheated tires
●Poor sealing of the tire bead
●Wheel deformation and/or tire separation
●A greater possibility of tire damage from road hazards
NOTICE
■When inspecting and adjusting tire inflation pressure
Be sure to put the tire valve caps back on.
Without the valve caps, dirt or moisture could get into the valve and cause air leak-
age, which could result in an accident. If the caps are lost, replace them as soon as
possible.

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4-3. Do-it-yourself maintenance
HS250h_U_75050U
Wheels
■When replacing wheels
The wheels of your vehicle are equipped with tire pressure warning valves and
transmitters that allow the tire pressure warning system to provide advance warning
in the event of a loss in tire inflation pressure. Whenever wheels are replaced, tire
pressure warning valves and transmitters must be installed. (→P. 4 5 2 )
If a wheel is bent, cracked or heavily corroded, it should be replaced.
Otherwise, the tire may separate fr om the wheel or cause a loss of han-
dling control.
■ Wheel selection
When replacing wheels, care should be taken to ensure that they
are equivalent to those removed in load capacity, diameter, rim
width and inset*.
Replacement wheels are available at your Lexus dealer.
*: Conventionally referred to as “offset”.
Lexus does not recommend using the following:
●Wheels of different sizes or types
● Used wheels
● Bent wheels that have been straightened
■ Aluminum wheel precautions
●Use only Lexus wheel nuts and wrenches designed for use with
your aluminum wheels.
● When rotating, repairing or changing your tires, check that the
wheel nuts are still tight after driving 1000 miles (1600 km).
● Be careful not to damage the aluminum wheels when using tire
chains.
● Use only Lexus genuine balance weights or equivalent and a
plastic or rubber hammer when balancing your wheels.

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4-3. Do-it-yourself maintenance
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Maintenance and care
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CAUTION
■When replacing wheels
●Do not use wheels that are a different size from those recommended in the
Owner’s Manual, as this may result in a loss of handling control.
●Never use an inner tube in a leaking wheel which is designed for a tubeless tire.
Doing so may result in an accident, causing death or serious injury.
■Use of defective wheels prohibited
Do not use cracked or deformed wheels.
Doing so could cause the tire to leak air during driving, possibly causing an acci-
dent.
NOTICE
■Replacing tire pressure warning valves and transmitters
●Because tire repair or replacement may affect the tire pressure warning valves
and transmitters, make sure to have tires serviced by your Lexus dealer or other
qualified service shop. In addition, make sure to purchase your tire pressure
warning valves and transmitters at your Lexus dealer.
●Ensure that only genuine Lexus wheels are used on your vehicle.
Tire pressure warning valves and transmitters may not work properly with non-
genuine wheels.

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4-3. Do-it-yourself maintenance
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23DOOR NO.225 APower door lock system
24P/ I 160 AIG2, EFI MAIN, BATT FAN
25EPS60 AElectric power steering system
26PCU10 AHybrid system
27IGCT NO.210 A
Smart access system with push-button
start, hybrid system, P position control
system, multiport fuel injection sys-
tem/sequential multiport fuel injection
system
28MIR HTR10 ARear window defogger, mirror heater
29RAD NO.115 AAudio system, navigation system
30DOME10 A
Interior lights, antiglare inside rear
view mirror, audio system, navigation
system, garage door opener
31ECU-B7. 5 A
Smart access system with push-button
start, air conditioning system, gauges
and meters, outside rear view mirror,
clock, seats position memory, electric
tilt & telescopic steering wheel
32H-LP LH HI10 ALeft-hand headlight (high beam)
33H-LP RH HI10 ARight-hand headlight (high beam)
34EFI NO. 210 A
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
35IGCT NO.310 AHybrid system
FuseAmpereCircuit

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4-3. Do-it-yourself maintenance
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11ECU-IG NO.110 A
Rear view mirror, electronically con-
trolled brake system, electric power
steering system, moon roof, rain-sens-
ing windshield wiper, emergency
flashers switch, air conditioning sys-
tem, electric head restraints, driver
monitor, steering switch, seat heaters/
ventilators, electric tilt & telescopic
steering wheel, rear sunshade, AFS
12S/ROOF30 AElectric moon roof
13DOOR RL25 ARear power window (left-side)
14DOOR RR25 ARear power window (right-side)
15SHADE RR10 ARear sunshade
16D FR DOOR25 ADriver’s side power window, outside
rear view mirror
17P FR DOOR25 APassenger’s side power window, out-
side rear view mirror
18TI & TE30 AElectric tilt & telescopic steering
wheel
19STOP10 AStop lights, electronically controlled
brake system
20A/C NO.210 ANo circuit
FuseAmpereCircuit

5
When trouble arises
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5-1. Essential information
HS250h_U_75050U
If your vehicle needs to be towed
Before towingThe following may indicate a problem with your hybrid transmission.
Contact your Lexus dealer before towing.
● The hybrid system is operating but the vehicle will not move.
● The vehicle makes an abnormal sound.
Emergency towing
If a tow truck is not available in an
emergency, your vehicle may be
temporarily towed using a cable or
chain secured to the emergency
towing eyelet(s). This should only
be attempted on hard surfaced
roads for short distances at under
18 mph (30 km/h).
A driver must be in the vehicle to
steer and operate the brakes. The
vehicle’s wheels, drive train, axles,
steering and brakes must be in
good condition.
If towing is necessary, we recommend having your vehicle towed by your
Lexus dealer or a commercial towing service, using a lift-type truck or a
flatbed truck.
Use a safety chain system for all towing, and abide by all state/provincial
and local laws.

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5-1. Essential information
HS250h_U_75050U●
If emergency towing cannot be performed
The vehicle cannot be towed by another vehicle in the following situa-
tions because the front wheels may be locked by the parking lock.
Transport the vehicle with both front wheels or all 4 wheels lifted using
a flatbed or wheel-lift type truck.
• There is a malfunction in the smart access system with push-button
start.
• The P position control system is malfunctioning. ( →P. 513)
• The 12-volt battery is discharged.
Installing towing eyelets
Remove the eyelet cover using a
flathead screwdriver.
To protect the bodywork, place a
rag between the screwdriver and
the vehicle body, as shown in the
illustration.
Insert the towing eyelet into the
hole and tighten partially by hand.

5
When trouble arises
497
5-1. Essential information
HS250h_U_75050UTighten down the towing eyelet
securely using a wheel nut wrench.
Towing with a sling-type truck
Do not tow with a sling-type truck
to prevent body damage.
Towing with a wheel-lift type truckFrom the front Release the parking brake.

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5-1. Essential information
HS250h_U_75050UFrom the rear
Use a towing dolly under the front
wheels.
Using a flatbed truck
If your Lexus is transported by a
flatbed truck, it should be tied
down at the locations shown in the
illustration.
If you use chains or cables to tie
down your vehicle, the angles
shaded in black must be 45°.
Do not overly tighten the tie downs
or the vehicle may be damaged.

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5-1. Essential information
HS250h_U_75050U
NOTICE
■To prevent damage the vehicle when towing using a wheel-lift type truck
When raising the vehicle, ensure adequate ground clearance for towing at the
opposite end of the raised vehicle. Without adequate clearance, the vehicle could
be damaged while being towed.
■To prevent body damage when towing using a sling-type truck
Do not tow with a sling-type truck, either from the front or rear.
■To prevent causing serious damage to the transmission when emergency towing
Never tow a vehicle from the rear with four wheels on the ground. This may cause
serious damage to the transmission.