Lexus IS250 2007 Basic Functions / LEXUS 2007 IS350/250 OWNER'S MANUAL (OM53578U)

5
When trouble arises
333
5-1. Essential information
Switch to ACC mode so that the
steering wheel is unlocked.
From the rear (2WD models)
Use a towing dolly under the front
wheel.
From the rear (AWD models)
NOTICE
■To prevent damaging the vehicle
●Do not tow the vehicle with the engine switch OFF.
The steering lock mechanism is not strong enough to hold the front wheel
straight.
●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.

334
5-1. Essential information
Using a flat bed truck
If your Lexus is transported by a
flat bed 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
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
●Engine coolant temperature gauge needle continually points
higher than normal
■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 engine
■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, spongy feeling, pedal almost touches
the floor

336
5-1. Essential information
Fuel pump shut off system
Follow the procedure below to restart the engine after the system is acti-
vated.
Switch to ACC mode or OFF.
Restart the engine.
NOTICE
■Before starting the engine
Inspect the ground under the vehicle.
If you find that fuel has leaked on to the ground, the fuel system has been damaged
and is in need of repair. Do not restart the engine.
To minimize the risk of fuel leakage when the engine stalls or an airbag
inflates upon collision, the fuel pump shut off system stops supplying fuel to
the engine.
STEP1
STEP2

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When trouble arises
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5-1. Essential information
Event data recorder
In a crash or a near car crash event
The SRS airbag sensor assembly contains the EDR. In a crash or a near
car crash event, this device may record some or all of the following infor-
mation:
●Engine speed
●Whether the brake pedal was applied or not
●Ve h i c l e s p e e d
●To what extent the accelerator pedal was depressed
●Position of the transmission shift lever
●Whether the driver and front passenger wore seat belts or not
●Driver's seat position
●SRS airbag deployment data
●SRS airbag system diagnostic data
If your vehicles is equipped with a vehicle stability control (VSC) system
The VSC Electronic Control Unit (ECU) may contain another EDR. In
case the VSC or Brake Assist system is activated, or the lateral accelera-
tion is beyond a certain valve, this device may record some or all of the
following information:
●Behavior of the vehicle
●Steering wheel angle
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 useful for troubleshooting, there is an event data
recorder (EDR) that records data in a crash or a near car crash event.

338
5-1. Essential information
●Ve h i c l e s p e e d
●To what extent the accelerator pedal was depressed
●To what extent the brake pedal was applied
●To what extent the ECU controlled the condition of the 4 wheels
●Vehicle stability control system diagnostic data
The information above is intended to be used for the purpose of improv-
ing vehicle safety performance. Unlike general data recorders, the EDR
does not record sound data such as conversation between passengers.
Disclosure of the data
Lexus will not disclose the data recorded in an EDR to a third party
except when:
●An agreement from the vehicle's owner (or the leasing company for a
leased vehicle) is obtained
●Officially requested by the police or other authorities
●Used as a defense for Lexus in a law suit
●Ordered by a court 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

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When trouble arises
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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 vehicle in a safe place and contact your Lexus
dealer.
*: Parking brake engaged warning buzzer:
P. 3 4 9
Warning lightWarning light/Details
(U.S.A.)

(Canada)
Brake system warning light (warning buzzer)*
• Low brake fluid
• Malfunction in the brake booster 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.
Calmly perform the following actions if any of the warning lights turn on or
flash. If a light turns on or flashes, but then turns off, this does not necessar-
ily indicate a malfunction in the system.

340
5-2. Steps to take in an emergency
Stop the vehicle immediately.
The following warnings indicate the possibility of damage to the vehicle
that may lead to an accident. Immediately stop the vehicle in a safe place
and contact your Lexus dealer.
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.
Warning lightWarning light/Details
Charging system warning light
Indicates a malfunction in the vehicle’s charging system.
Warning lightWarning light/Details
(U.S.A.)

(Canada)
Malfunction indicator lamp
Indicates a malfunction in:
• The electronic engine control system;
• The electronic throttle control system; or
• The electronic automatic transmission control system.
SRS warning light
Indicates a malfunction in:
• The SRS airbag system; or
• The seat belt pretensioner system.

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When trouble arises
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5-2. Steps to take in an emergency
Follow the correction procedures.
After taking the specified steps to correct the suspected problem, check
that the warning light turns off.
Warning lightWarning light/Details
(U.S.A.)

(Canada)
ABS warning light
Indicates a malfunction in:
•The ABS;
• The brake assist system.
Electric power steering system warning light
• Indicates a malfunction in the EPS (Electric Power Steering)
system.
Pre-collision system warning light (if equipped)
• Indicates a malfunction in the pre-collision system.
Warning lightWarning light/DetailsCorrection procedure
Open door warning light
(warning buzzer)
*1
Indicates that a door or a
trunk is not fully closed.
Check that all doors and the
trunk are closed.
Low fuel level warning light
Remaining fuel
(Approximately 2.9 gal. [11 L,
2.4 Imp.gal.] or less)
Refuel the vehicle.
(On the instru-
ment cluster)
Driver’s seat belt reminder
light (warning buzzer)
*2
Warns the driver to fasten
his/her seat belt.Fasten the seat belt.

342
5-2. Steps to take in an emergency
*1:Open door warning buzzer:
P. 3 4 9
*2:Driver's and front passenger’s seat belt reminders:
The driver’s and front passenger’s seat belts reminder sounds to alert the driver
and front passenger that his or her sear belt is not fastened. The buzzer sounds
intermittently for 10 seconds after the vehicle has reached a speed of at least 12
mph (20 km/h). Then, if the seat belt is still unfastened, the buzzer will sound in a
different tone for 20 more seconds.
Warning lightWarning light/DetailsCorrection procedure
(On the center
cluster)
Front passenger’s seat belt
reminder light
(warning buzzer)
*2
Warns the front passenger to
fasten his/her seat belt.
Fasten the seat belt.
Low tire pressure warning
light
Indicates low tire pressure.Adjust the tire pressure.
A malfunction in the tire pres-
sure warning system.P. 3 4 5
Master warning light
A buzzer sounds and the
warning light comes on and
flashes to indicate that the
master warning system has
detected a malfunction.
P. 3 4 4