Lexus ES350 2008 Owner's Manual

5
When trouble arises
359
5-1. Essential information
ES350_U_(L/O_0708)
Fuel pump shut off system
Follow the procedure below to restart the engine after the system is acti-
vated.Turn the “ENGINE START STOP” switch to ACCESSORY 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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5-1. Essential information
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Event data recorder
In a crash or a near car crash eventThe 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
● Vehicle speed
● 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
● Front passenger's occupant classification
● SRS airbag deployment data
● SRS airbag system diagnostic data
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 a system to
that record data in a crash or a near car crash event.

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When trouble arises
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5-1. Essential information
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Vehicle speed
● 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

362
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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 76
Warning lightWarning light/Details
(USA)
(Canada)
Brake system warning light (warning buzzer)*
Indicates the following;
• 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.

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When trouble arises
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5-2. Steps to take in an emergency
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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 yo ur 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.
(USA)

(Canada)
Malfunction indicator lampIndicates the following:
• Empty fuel tank
• Loose fuel tank
• Malfunction in the electronic engine control system;
• Malfunction in the electronic throttle control system; or
• Malfunction in the electronic automatic transmission con-trol system.
Warning lightWarning light/Details
SRS warning lightIndicates a malfunction in:
• The SRS airbag system; or
• Front passenger occupant classification system
• The seat belt pretensioner system.

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5-2. Steps to take in an emergency
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Follow the correction procedure.After taking the specified steps to correct the suspected problem, check
that the warning light turns off.
Warning lightWarning light/Details
(USA)
(Canada)
ABS warning light Indicates a malfunction in:
• The ABS; or
• The brake assist system.
Pre-collision system warning lightIndicates a malfunction in the pre-collision system.
Warning lightWarning light/DetailsCorrection procedure
Open door warning light
(warning buzzer
*1)
Indicates that a door or trunk
is not fully closed.Check that all doors and the
trunk are closed.
Rear light failure warning
light
Indicates one or more stop
lights are burned out.
Have the defective bulbs
replaced by your Lexus dealer.
Low fuel level warning lightIndicates remaining fuel level
is low.
(Approximately 2.8 gal.
[10.5 L, 2.3 Imp.gal.] or less)
Refuel the vehicle.

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When trouble arises
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5-2. Steps to take in an emergency
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Driver’s seat belt reminder
light (warning buzzer
*2)
Warns the driver to fasten his
or her seat belt.Fasten the seat belt.
(with naviga- tion system)
(without navi-
gation system)Front passenger’s seat belt
reminder light
(warning buzzer
*2)
Warns the front passenger to
fasten his or her seat belt.Fasten the seat belt.
Tire pressure warning light
When the light comes on:
Low tire inflation pressure.Adjust the tire inflation pres-
sure.
When the light comes on after
blinking for 1 minute:
Malfunction in the tire pres-
sure warning system
Have the system checked by
your Lexus dealer.
Warning lightWarning light/DetailsCorrection procedure

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5-2. Steps to take in an emergency
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*1: Open door warning buzzer:
→P. 3 76
*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 he r 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.
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 7 3
■First check when the malfunction indicator lamp comes on while driving
Check the following:
●Is the fuel tank empty?
If it is, fill the fuel tank immediately.
●Is the fuel tank cap loose?
If it is, tighten it securely.
The lamp will go off after taking several driving trips.
If the lamp does not go off even after several trips, contact your Lexus dealer as
soon as possible.
Warning lightWarning light/DetailsCorrection procedure

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When trouble arises
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5-2. Steps to take in an emergency
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■SRS warning light
This warning light system monitors the following:
• The airbag sensor assembly
• The front airbag sensors
• The side and curtain shield airbag sensor assemblies
• The curtain shield airbag sensor assemblies
• The driver’s seat position sensor
• The driver’s seat belt buckle switch
• Occupant detection system (ECU and sensors)
• AIR BAG ON and AIR BAG OFF indicator lights
• Front passenger’s seat belt buckle switch
• The seat belt pretensioner assemblies
• The inflators
• The interconnecting wiring and power sources
■Front passenger detection sensor and passenger seat belt reminder
If luggage or other load is placed on the front passenger seat, depending on its
weight, the reminder light may flash and buzzer may sound.
■When the tire pressure warning light comes on
Check the tire inflation pressure and adjust to the appropriate level. Pushing the tire
pressure warning reset switch does not turn off the tire pressure warning light.
■The tire pressure warning light may turn on due to natural causes
The tire pressure warning light may turn on due to natural causes such as natural air
leaks or tire inflation pressure changes caused by temperature. In this case, adjust-
ing the tire inflation pressure will turn off the warning light (after a few minutes).

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5-2. Steps to take in an emergency
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■When a tire is replaced with a spare tireFull-size spare tire
The spare tire is also equipped with the tire pressure warning valve and transmitter.
The tire pressure warning light will turn on if the tire inflation pressure of the spare
tire is low. If a tire goes flat, even though the flat tire is replaced with the spare tire,
the tire pressure warning light does not turn off. Replace the spare tire with the
repaired tire and adjust the proper tire inflation pressure. The tire pressure warning
light will turn off after a few minutes. Compact spare tire
The compact spare tire is not equipped with the tire pressure warning valve and
transmitter. If a tire goes flat, the tire pressure warning light will not turn off even
though the flat tire is replaced with the spare tire. Replace the spare tire with the
repaired tire and adjust the proper tire inflation pressure. The tire pressure warning
light will turn off after a few minutes.