Sound System Lexus GS350 2008 Owner's Guide

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4-2. Maintenance
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General maintenance
Engine compartment
ItemsCheck points
Brake fluid• At the correct level? (→P. 4 1 6 )
Engine coolant• At the correct level? ( →P. 4 1 4 )
Engine oil• At the correct level? (→ P. 4 0 9 )
Exhaust system• No fumes or strange sounds?
Radiator/condenser/hoses• Not blocked with foreign matter?
(→ P. 4 1 5 )
Wa s h e r f l u i d• At the correct level? (→ P. 4 2 0 )
12 volt battery•Maintenance-free (→P. 4 1 7 )
Listed below are the general maintenance items that should be performed
at the intervals specified in the “Warranty and Services Guide/Owner’s
Manual Supplement”. It is recommended that any problem you notice
should be brought to the attention of your Lexus dealer or qualified service
shop for advice.
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5-1. Essential information..... 478If your vehicle needs to be towed ............................ 478
If you think something is wrong ..................................... 484
Fuel pump shut off system .................................... 485
Event data recorder .............. 486 5-2. Steps to take in an
emergency ................... 488
If a warning light turns on or a warning buzzer sounds... .. 488
If a warning message is displayed................................. 497
If you have a flat tire (Vehicles with standard tires) .............. 512
If you have a flat tire (Vehicles with run-flat tires)................ 522
If the engine will not start .... 523
If the shift lever cannot be shifted from “P”.................... 524
If you lose your keys .............. 525
If the electronic key does not operate properly.......... 526
If the 12 volt battery is discharged ............................ 529
If your vehicle overheats ..... 533
If the vehicle becomes stuck........................................ 536
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5-1. Essential information
If your vehicle needs to be towed
Before towingThe following may indicate a problem with your automatic transmission.
Contact your Lexus dealer before towing.
● The engine is running, 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 tem-
porarily towed using a cable or chain secured to the emergency towing
eyelet. This should only attempted on hard, surfaced roads for short dis-
tances at low speeds.
A driver must be in the vehicle to steer and operate the brakes. The vehi-
cle’s wheels, drive train, axles, steer ing and brakes must be in good condi-
tion.
If towing is necessary, we recommend having your vehicle towed by your
Lexus dealer or a commercial towing se rvice, using a lift-type truck or a flat
bed truck.
Use a safety chain system for all towing, and abide by all state/provincial
and local laws.
If towing from the rear, the wheels and axle on the ground must be in good
condition.
If they are damaged, use a towing dolly or flat bed truck.
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5-1. Essential information
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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, sp ongy feeling, pedal almost touches
the floor
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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.
*1: Parking brake engaged warning buzzer:
→ P. 5 0 3
Stop the vehicl e immediately.
The following warning indicates 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.
Warning lightWarning light/Details
(U.S.A.)

(Canada)
Brake system warning light (warning buzzer) *1
•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 lightMalfunction in the vehicle’s charging system.
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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5-2. Steps to take in an emergency
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*3: Open door warning buzzer:
→P. 5 0 2
*
4: Driver’s and front passenger’s seat belt reminder buzzer:
The driver’s and front passenger’s seat belts reminder sounds to alert the driver
and front passenger that his or her seat 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
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.
Take appropriate action in
accordance with the message
displayed on the multi-infor-
mation display.
■If the malfunction indicator lamp comes on while driving
First check the following:
●Is your vehicle low on gas?
If it is, refuel the vehicle immediately.
●Is the fuel tank cap loose?
If it is, tighten it securely.
The light will go off after taking several driving trips.
If the light does not go off even after several trips, contact your Lexus dealer as soon
as possible.
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5-2. Steps to take in an emergency
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Have the vehicle inspected immediately.A buzzer sounds and a warning message is shown on the multi-informa-
tion display. 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.
Wa r n i n g m e s s a g eDetails
Malfunction in the automatic headlight leveling sys-
tem.
Malfunction in the rear lights system.
Malfunction in the tire pressure warning system. The tire pressure warning light comes on after blink-
ing for 1 minute.
(Flashing)
Malfunction in the steering lock system.
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5-2. Steps to take in an emergency
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Have the malfunction repaired immediately.A buzzer sounds and a warning message is shown on the multi-informa-
tion display. After taking the spec ified steps to correct the suspected
problem, check that the warning message turns off.
Wa r n i n g m e s s a g eDetailsCorrection procedure
One or more of the doors
is not fully closed.
The system also indi-
cates which doors are
not fully closed.
flashes and a
buzzer sounds to indi-
cate that one or more of
the doors is not fully
closed (with the vehicle
having reached a speed
of 3 mph [5 km/h]).
Make sure that all of the
doors are closed.
The hood is not fully
closed.
flashes and a
buzzer sounds to indi-
cate that hood is not fully
closed (with the vehicle
having reached a speed
of 3 mph [5 km/h]).
Close the hood.
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5-2. Steps to take in an emergency
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If the engine will not start
If the engine will not start even though correct starting procedures are
being followed (→P. 121), consider each of the following points.
■The engine will not start even if you are carrying the correct elec-
tronic key
One of the following may be the cause of the problem.
● There may not be sufficient fuel in the vehicle’s tank.
Add fuel to the vehicle.
● The engine may be flooded.
Try to restart the engine once more following correct starting
procedures. ( →P. 121)
● There may be a malfunction in the immobilizer system. ( →P. 7 3 )
■ The starter motor turns over slowly, the interior lights and head-
lights are dim, or the horn does not sound or sounds at a low vol-
ume
One of the following may be the cause of the problem.
● The 12 volt battery may be discharged. ( →P. 5 2 9 )
● The 12 volt battery terminal connections may be loose or corroded.
■ The starter motor does not turn ov er, the interior lights and head-
lights do not turn on, or the horn does not sound
One of the following may be the cause of the problem.
● One or both of the 12 volt battery terminals may be disconnected.
● The 12 volt battery may be discharged. ( →P. 5 2 9 )
Contact your Lexus dealer if the problem cannot be repaired, or if
repair procedures are unknown.
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What to do if...
What to do if...
A tire puncturesP. 5 1 2 /522If you have a flat tire
The engine does not start
P. 7 3Immobilizer system
P. 5 2 3If the engine will not start
P. 5 2 9If the 12 volt battery is discharged
The shift lever cannot be
moved outP. 5 2 4If the shift lever cannot be shifted
from “P”
The engine coolant temperature
gauge enters the red zone
Steam can be seen coming
from under the hood
P. 5 3 3If your vehicle overheats
The key is lostP. 5 2 5If you lose your keys
The battery runs outP. 5 2 9If the 12 volt battery is discharged
The doors cannot be lockedP. 3 7Doors
The horn begins to soundP. 7 5Alarm
The vehicle is stuck in mud or
sandP. 5 3 6If the vehicle becomes stuck
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