engine Lexus GS350 2013 Owner's Manual

GS350_U (OM30C34U)
6536-3. Do-it-yourself maintenance
6
Maintenance and care
■Engine compartment (type B fuse box)
33FA N N O. 240Electric cooling fans
34A/C COMP7. 5Air conditioning system
35FILTER10Condenser
FuseAmpereCircuit
FuseAmpereCircuit
1IGN10Starting system
2INJ10Multiport fuel injection system/sequential
multiport fuel injection system
3EFI NO.210Fuel system, exhaust system
4IG2 MAIN20IGN, GAUGE, INJ, AIR BAG, IG2 NO.1,
LH-IG2
5EFI MAIN25Multiport fuel injection system/sequential
multiport fuel injection system, EFI NO.2
6A/F15Air intake system
7EDU20Multiport fuel injection system/sequential
multiport fuel injection system
8F/ P M P25Multiport fuel injection system/sequential
multiport fuel injection system
9SPARE30Spare fuse

663
GS350_U (OM30C34U)6-3. Do-it-yourself maintenance
6
Maintenance and care
Light bulbs
Check the wattage of the light bulb to be replaced. ( →P. 76 1 )
→ P. 6 1 6
You may replace the following bulbs by yourself. The difficulty level of
replacement varies depending on the bulb. If necessary bulb replace-
ment seems difficult to perfor m, contact your Lexus dealer.
For more information about replacing other light bulbs, contact your
Lexus dealer.
Preparing for light bulb replacement
Removing the engine compartment covers

675
GS350_U (OM30C34U)
When trouble arises7
7-1. Essential information Emergency flashers....................676
If your vehicle has to be stopped in an emergency .... 677 7-2. Steps to take in an emergency
If your vehicle needs to be towed ................................ 678
If you think something is wrong ................684
Fuel pump shut off system ......685
If a warning light turns on or a warning buzzer sounds .....686
If a warning message is displayed .................................697
If you have a flat tire................... 722
If the engine will not start ........ 735
If the shift lever cannot be shifted from P ......................737
If the parking brake cannot be released ................................ 738
If the electronic key does not operate properly ......................740
If the vehicle battery is discharged ..............................743
If your vehicle overheats .......... 747
If the vehicle becomes stuck .............................................. 749

676
GS350_U (OM30C34U)
7-1. Essential information
Emergency flashers
Press the switch.
All the turn signals will flash.
To turn them off, press the switch once
again.
■Emergency flashers
If the emergency flashers are used for a long time while the engine is not operating,
the battery may discharge.
The emergency flashers are used to warn other drivers when the vehi-
cle has to be stopped in the road to a breakdown, etc.

677
GS350_U (OM30C34U)
7
When trouble arises
7-1. Essential information
If your vehicle has to be stopped in an emergency
Steadily step on the brake pedal with both feet and firmly depress it.
Do not pump the brake pedal repeatedly as this will increase the effort required to
slow the vehicle.
Shift the shift lever to N.
XIf the shift lever is shifted to N
After slowing down, stop the vehicle in a safe place by the road.
Stop the engine.
XIf the shift lever cannot be shifted to N
Keep depressing the brake pedal with both feet to reduce vehicle
speed as much as possible.
To stop the engine, press and
hold the engine switch for 2 con-
secutive seconds or more, or
press it briefly 3 times or more in
succession.
Stop the vehicle in a safe place by the road.
Only in an emergency, such as if it becomes impossible to stop the vehi-
cle in the normal way, stop the ve hicle using the following procedure:
1
2
3
4
3
Press and hold for 2 seconds or more
or press briefly 3 times or more
4
CAUTION
■If the engine has to be turned off while driving
Power assist for the brakes and steering wheel will be lost, making the brake pedal
harder to depress and the steering wheel heavier to turn. Decelerate as much as
possible before turning off the engine.
5

678
GS350_U (OM30C34U)
7-2. Steps to take in an emergency
If your vehicle needs to be towed
The following may indicate a problem with your transmission. Contact
your Lexus dealer before towing.
●The engine is running but the vehicle will not move.
●The vehicle makes an abnormal sound.
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. This should only be
attempted on hard surfaced roads
for short distances at low speeds.
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 flat bed truck.
Use a safety chain system for all towing, and abide by all state/provin-
cial and local laws.
Before towing
Emergency towing

6807-2. Steps to take in an emergency
GS350_U (OM30C34U)Do not tow with a sling-type truck to
prevent body damage.
Towing with a sling-type truck
Towing with a wheel-lift type truck
XFrom the frontXFrom the rear (2WD models)
Use a towing dolly under the rear
wheels. Turn the engine switch to ACCES-
SORY mode so that the steering
wheel is unlocked.
XFrom the rear (AWD models)
Use a towing dolly under the front
wheels.

6827-2. Steps to take in an emergency
GS350_U (OM30C34U)
■Before emergency towingRelease the parking brake.
Shift the shift lever to N.
Turn the engine switch to ACCESSORY (engine off) or IGNITION ON (engine
running) mode.
CAUTION
Observe the following precautions.
Failure to do so may result in death or serious injury.
■Caution while towing
●Use extreme caution when towing the vehicle.
Avoid sudden starts or erratic driving maneuvers which place excessive stress on
the emergency towing eyelets and the cables or chains. Always be cautious of the
surroundings and other vehicles while towing.
●If the engine is not running, 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 towing eyelets are installed securely.
If not securely installed, towing eyelets may come loose during towing.
1
2
3

6837-2. Steps to take in an emergency
GS350_U (OM30C34U)
7
When trouble arises
NOTICE
■To prevent causing serious damage to the transmission and transfer (AWD mod-
els) when towing using a wheel-lift type truck
2WD models:
Never tow this vehicle from the front with the rear wheels on the ground.
AW D m o d e l s :
Never tow this vehicle with any of the wheels in contact with the ground.
■To prevent damage to the vehicle when towing using a wheel-lift type truck
2WD models:
●Do not tow the vehicle from the rear with the engine switch off. The steering lock
mechanism is not strong enough to hold the front wheels straight.
●When raising the vehicle from the rear, 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 from the rear.
AW D m o d e l s :
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 with 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 and transfer (AWD mod-
els) in emergency towing
Never tow a vehicle from the rear with four wheels on the ground. This may cause
serious damage to the transmission and transfer.

684
GS350_U (OM30C34U)
7-2. Steps to take in an emergency
If you think something is wrong
●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.
●Changes in exhaust sound
●Excessive tire squeal when cornering
●Strange noises related to the suspension system
●Pinging or other noises related to the engine
●Engine missing, stumbling or running roughly
●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
If you notice any of the following symptoms, your vehicle probably
needs adjustment or repair. Contact your Lexus dealer as soon as pos-
sible.
Visible symptoms
Audible symptoms
Operational symptoms