Lexus HS250h 2011 Do-it-yourself maintenance / LEXUS 2011 HS250H OWNERS MANUAL (OM75037U)

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

492
5-1. Essential information
From the rearUse 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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When trouble arises
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5-1. Essential information
■Before emergency towingTurn the “POWER” switch to ON mode. ( P. 1 4 8 )
Do not turn the “POWER” switch to ACCESSORY mode.
Release the parking brake.
Change the shift position to N.
When the “POWER” switch is in ACCESSORY mode, the shift position
cannot be changed to N.
■Emergency towing eyelet location
 P. 5 2 7
CAUTION
■Caution while towing
●Use extreme caution when towing the vehicle.
Avoid sudden starts or erratic driving maneuvers which would place excessive
stress on the emergency towing eyelets and the cables or chains. Always be cau-
tious of the surroundings and other vehicles while towing.
●Do not turn off the power switch.
This may lead to accidents as th e parking lock will be engaged.
●If the hybrid system is off, the power assist for the brakes and steering will not
function, making steering and braking more difficult.
■Installing towing eyelets to the vehicle
Make sure that the towing eyelets are installed securely.
If not securely installed, the towing eyel ets may come loose during towing. This may
lead to accidents that cause serious injury or even death.

494
5-1. Essential information
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.

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When trouble arises
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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 vehicle
(Water dripping from the air conditioning after use is normal.)
● Flat-looking tires or uneven tire wear
● High engine coolant temperature warning light flashes or comes
on
■ Audible symptoms
●Changes in exhaust sound
● Excessive tire squeal when cornering
● Strange noises related to the suspension system
● Pinging or other noises related to the hybrid system
■ Operational symptoms
●Engine missing, stumbling or running rough
● Appreciable loss of power
● Vehicle pulls heavily to one side when braking
● Vehicle pulls heavily to one side when driving on a level road.
● Loss of brake effectiveness, sp ongy feeling, pedal almost touches
the floor

496
5-1. Essential information
Event data recorder
In a crash or a near crash eventThe SRS airbag sensor assembly co ntains the EDR. In a crash or near
crash event, this device may record so me or all of the following informa-
tion:
● Engine speed
● Whether the brake pedal was applied or not
● Vehicle speed
● To what extent the accelerator pedal was depressed
● Hybrid transmission shift position
● Whether the driver and front passenger wore seat belts or not
● Driver's seat position
● SRS airbag deployment data
● SRS airbag system diagnostic data
● Front passenger’s occupant classification
The information abov e is intended to be used for the purpose of improv-
ing vehicle safety performance. Unlike general da ta recorders, the EDR
does not record sound data such as conversation between passengers.
Your vehicle has computers that monitor and control certain aspects of
your vehicle. These computers assist in driving and maintaining optimal
vehicle performance.
Besides storing data usef ul for troubleshooting, there is an event data
recorder (EDR) that records data in a crash or near crash event.

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5-1. Essential information
Disclosure of the dataLexus will not disclose the data recorded in an EDR to a third party
except when:
● An agreement from the vehicle's ow ner (or the leasing company for a
leased vehicle) is obtained
● Officially requested to by the police or other authorities
● Necessary, for use as a defense for Lexus in a lawsuit
● Ordered to by a court of law
However, if necessary Lexus will:
● Use the data for research on Lexus vehicle safety performance
● Disclose the data to a third party for research purposes without dis-
closing details of the vehicle owner, and only when it is deemed neces-
sary
● Disclose summarized data cleared of vehicle identification information
to a non-Lexus organization for research purposes

498
5-2. Steps to take in an emergency
If a warning light turns on or a warning buzzer sounds...
Stop the vehicle immediately. Continuing to drive the vehicle may be dangerous.
The following warning indicates a possible problem in the brake system.
Immediately stop the vehi cle in a safe place and contact your Lexus
dealer.
*: Brake system warning buzzer
When there is a possible problem that could affect braking performance, the
warning light will come on and a warning buzzer will sound.
Parking brake engaged warning buzzer
 P. 5 1 1
Stop the vehicle immediately.
The following warning indicates the po ssibility of damage to the vehicle
that may lead to an ac cident. Immediately stop the vehicle in a safe place
and contact your Lexus dealer.
Warning lightWarning light/Details
(U.S.A.)

(Canada)
Brake system warning light and warning buzzer*
•Low brake fluid
• Malfunction in the brake system
This light also comes on when the parking brake is not
released. If the light turns off after the parking brake is fully
released the system is operating normally.
Warning lightWarning light/Details
Charging system warning lightIndicates a malfunction in the vehicle’s charging system
Calmly perform the following actions if any of the warning lights comes on
or flashes. If a light comes on or flashes, but then goes off, this does not nec-
essarily indicate a malfunction in the system. However, if this continues to
occur, have the vehicle inspected by your Lexus dealer.

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When trouble arises
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5-2. Steps to take in an emergency
Have the vehicle inspected by your Lexus dealer immediately.Failing to investigate the cause of the following warnings may lead to the
system operating abnormally and possibly cause an accident. Have the
vehicle inspected by your Lexus dealer immediately.
High engine coolant temperatur e warning light (flashes or
comes on) Indicates that the engine is overheating P. 5 4 8
• Flashes: Engine is overheating. Drive carefully.
• Comes on: Engine is overheated. Stop the vehicle.
Warning lightWarning light/Details
Brake system warning light Indicates a malfunction in:
• The regenerative brake system; or
• The electronically controlled brake system
(U.S.A.)

(Canada)
Malfunction indicator lamp
Indicates a malfunction in:
• The hybrid system;
• The electronic engine control system;
• The electronic throttle control system; or
• The hybrid transmission control system
SRS warning lightIndicates a malfunction in:
• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pretensioner system
(U.S.A.)

(Canada)
“ABS” warning lightIndicates a malfunction in:
•The ABS; or
• The brake assist system
Warning lightWarning light/Details

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5-2. Steps to take in an emergency
Electric power steering system warning light (warning
buzzer)Indicates a malfunction in the EPS system
(Flashes)
“PCS” warning light (if equipped)Indicates a malfunction in the pre-collision system
 P. 2 3 6
(Flashes)
“AFS OFF” indicator light (if equipped)
Indicates a malfunction in the AFS (Adaptive Front-lighting
System)
Slip indicator lightIndicates a malfunction in:
• Enhanced VSC system;
•TRAC system; or
• Hill-start assist control system
(Flashes)
“LKA” indicator light (if equipped)Indicates a malfunction in the lane keeping assist system
 P. 221
(Flashes)
Cruise control indicator light
Indicates a malfunction in the cruise control system
 P. 2 0 4 208
(Flashes)
Radar cruise control indicator light (if equipped)
Indicates a malfunction in the Dynamic radar cruise control
system P. 2 0 8
(Flashes)
Automatic High Beam indicator light (if equipped)
Indicates a malfunction in the automatic high beam system
 P. 1 9 1
Warning lightWarning light/Details