2012 Lexus GS350 engine

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7 7-1. Essential information
When trouble arises
GS350/250_EE (OM30C36E)
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.
If the shift lever is shifted to N
After slowing down, stop the vehicle in a safe place by the road.
Stop the engine.
If 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
consecutive 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
vehicle in the normal way, stop the vehicle using the following
procedure:
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Press and hold for 2 seconds or
more or press briefly 3 times or
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7407-1. Essential information
GS350/250_EE (OM30C36E)
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. Decel-
erate as much as possible before turning off the engine.

7407-2. Steps to take in an emergency
GS350/250_EE (OM30C36E)
If your vehicle needs to be towed
The following may indicate a problem with your transmission.
Contact any authorized Lexus dealer or repairer, or another duly
qualified and equipped professional before towing.
The engine is running but the vehicle will not move.
The vehicle makes an abnormal sound.
If towing is necessary, we recommend having your vehicle towed
by any authorized Lexus dealer or repairer, or another duly quali-
fied and equipped professional 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/pro-
vincial and local laws.
Before towing

7437-2. Steps to take in an emergency
7
When trouble arises
GS350/250_EE (OM30C36E)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
From the frontFrom the rear (2WD models)
Use a towing dolly under the
rear wheels.Turn the engine switch to
ACCESSORY mode so that the
steering wheel is unlocked.
From the rear (AWD models)
Use a towing dolly under the
front wheels.

7457-2. Steps to take in an emergency
7
When trouble arises
GS350/250_EE (OM30C36E)
Before emergency towing
Release 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.
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7467-2. Steps to take in an emergency
GS350/250_EE (OM30C36E)
NOTICE
To prevent causing serious damage to the transmission and transfer (AWD
models) when towing using a wheel-lift type truck
2WD models:
Never tow this vehicle from the front with the rear wheels on the ground.
AWD models:
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 steer-
ing 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.
AWD models:
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
models) 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.

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7 7-2. Steps to take in an emergency
When trouble arises
GS350/250_EE (OM30C36E)
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 proba-
bly needs adjustment or repair. Contact any authorized Lexus
dealer or repairer, or another duly qualified and equipped profes-
sional as soon as possible.
Visible symptoms
Audible symptoms
Operational symptoms

7487-2. Steps to take in an emergency
GS350/250_EE (OM30C36E)
Fuel pump shut off system
Follow the procedure below to restart the engine after the system is
activated.
Turn the engine switch to ACCESSORY mode or turn it off.
Restart the engine.
To minimize the risk of fuel leakage when the engine stalls or
when an airbag inflates upon collision, the fuel pump shut off sys-
tem stops the supply of fuel to the engine.
NOTICE
Before starting the engine
Inspect the ground under the vehicle.
If you find that fuel has leaked onto the ground, the fuel system has been
damaged and is in need of repair. Do not restart the engine.
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