2010 Lexus GS350 engine

5
When trouble arises
551
5-2. Steps to take in an emergency
GS_G_U (OM30C80U)
June 29, 2011 10:30 am
Wa r n i n g m e s s a g eDetailsCorrection procedure
(Flashing)
(If equipped)
The radar cruise control
system is unable to judge
vehicle-to-vehicle dis-
tance.
• Turn the mode select
switch to either the nor-
mal or power mode.
• If the windshield wipers
are on, turn them off or
set them to either the
intermittent or the slow
mode.
(If equipped, flashing)
Yo u r v e h i c l e i s n e a r i n g
the vehicle ahead (in
radar cruise mode).Slow the vehicle by apply-
ing the brakes.
(Flashing)
(If equipped)
Alerts the driver that
there is a high possibility
of collision or the pre-col-
lision braking has acti-
vated.
Depress the brake pedal.
■After changing the engine oil (U.S.A. only)
Make sure to reset the oil maintenance data. (P. 4 5 3 )
■Approach warning message
In the following instances, there is the possibility that the approach warning will not
activate even when the vehicle-to-vehicle distance decreases.
●When your vehicle and the vehicle ahead are traveling at the same speed or the
vehicle ahead is traveling more quickly than your vehicle.
●When the vehicle ahead is traveling at very low speed.
●Immediately after cruise control speed is set.
●At the instant the accelerator pedal is depressed.

5
When trouble arises
553
5-2. Steps to take in an emergency
GS_G_U (OM30C80U)
June 29, 2011 10:30 am
Have the malfunction repaired immediately.
After taking the specified steps to correct the suspected problem, check
that the warning message and light turn off.
Interior
buzzerExterior
buzzerWa r n i n g m e s s a g eDetailsCorrection
procedure
Once(Comes on for 10 seconds)
(Flashing)
The electronic key
is not detected
when attempting
to start the
engine.Confirm the
location of
the elec-
tronic key.
Once3 times
(Flashing)
An open door
other than the
driver’s door is
closed while the
electronic key is
outside the detec-
tion range and the
“ENGINE START
STOP” switch is in
ACCESSORY or
IGNITION ON
mode.
Confirm the
location of
the elec-
tronic key.

554
5-2. Steps to take in an emergency
GS_G_U (OM30C80U)
June 29, 2011 10:30 am
Interior
buzzerExterior
buzzerWa r n i n g m e s s a g eDetailsCorrection
procedure
Once3 times
(Flashing)
The electronic key
was carried out-
side the vehicle
and the driver’s
door was opened
and closed with
the shift lever in P
without turning off
the “ENGINE
START STOP”
switch.Tu r n t h e
“ENGINE
START
STOP”
switch to
OFF or con-
firm the
location of
the elec-
tronic key.
Contin-
uousContin-
uous
(Displayed alternately)
(Flashing)
The electronic key
was carried out-
side the vehicle
and the driver’s
door was opened
and closed while
any shift position
other than P was
selected without
turning off the
“ENGINE START
STOP” switch.
•Shift the
shift lever
to “P”.
•Confirm
the loca-
tion of the
electronic
key.
Once(Comes on for 10 seconds)
(Flashing)
The electronic key
battery is low.Replace the
battery.
(P. 4 8 2 )

5
When trouble arises
555
5-2. Steps to take in an emergency
GS_G_U (OM30C80U)
June 29, 2011 10:30 am
Interior
buzzerExterior
buzzerWa r n i n g m e s s a g eDetailsCorrection
procedure

An open door has
been closed and
the “ENGINE
START STOP”
switch has been
turned twice to
the ACCES-
SORY mode from
OFF.
Press the
“ENGINE
START
STOP”
switch while
applying the
brakes.

(Flashing)
The steering lock
has not released
within 3 seconds
of pressing the
“ENGINE START
STOP” switch.
The “ENGINE
START STOP”
switch indicator
will flash green for
15 seconds.Press the
“ENGINE
START
STOP”
switch again
while turn-
ing the
steering
wheel with
the brake
pedal
depressed.
Once
(Comes on for 60 seconds)The electronic key
does not operate
properly.
P. 5 7 1

(Comes on for 10 seconds)

556
5-2. Steps to take in an emergency
GS_G_U (OM30C80U)
June 29, 2011 10:30 am
If you have a flat tire (Vehicles with standard tires)
Remove the flat tire and replace it with the spare provided.
■Before jacking up the vehicle
●Stop the vehicle on a hard, flat surface.
●Set the parking brake.
●Shift the shift lever to “P”.
●Stop the engine.
●Turn on the emergency flashers.
■Location of the spare tire, jack and tools
Wheel nut wrenchJack Jack handle
Spare tireTi g h t e n
Loosen Tools
Towing eyelet

5
When trouble arises
563
5-2. Steps to take in an emergency
GS_G_U (OM30C80U)
June 29, 2011 10:30 am
CAUTION
■Using the tire jack
Improper use of the tire jack may lead to death or serious injuries due to the vehicle
suddenly falling off the jack.
●Do not use the tire jack for any purpose other than replacing tires or installing and
removing tire chains.
●Only use the tire jack that comes with this vehicle for replacing a flat tire. 
Do not use it on other vehicles, and do not use other tire jacks for replacing tires
on this vehicle.
●Always check that the tire jack is securely set to the jack point.
●Do not raise the vehicle while someone is in it.
●When raising the vehicle, do not put an object on or under the jack.
●Do not raise the vehicle to a height greater than that required to replace the tire.
●Use a jack stand if it is necessary to get under the vehicle.
●Do not put any part of your body under the vehicle supported by a jack.
●Do not start or run the engine while your vehicle is supported by the jack.
Take particular care when lowering the vehicle to ensure that no one working on or
near the vehicle may be injured.
■Replacing a flat tire
Observe the following precautions to reduce the risk of death or serious injury.
●Never use oil or grease on the wheel bolts or wheel nuts. Oil and grease may
cause the wheel nuts to be excessively tightened, leading to bolt or disc wheel
damage. In addition, the oil or grease can cause the wheel nuts to loosen and the
wheel may fall off, causing a serious accident. Remove any oil or grease from the
wheel bolts or wheel nuts.
●Have the wheel nuts tightened with a torque wrench to 76 ft•lbf (103 N•m, 10.5
kgf•m) as soon as possible after changing wheels.
Failure to follow these precautions could cause the nuts to loosen and the wheels
may fall off, which could lead to an accident causing death or serious injury.

568
5-2. Steps to take in an emergency
GS_G_U (OM30C80U)
June 29, 2011 10:30 am
If the engine will not start
If the engine will not start even though correct starting procedures are
being followed (P. 135), 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. 135)
●There may be a malfunction in the immobilizer system. (P. 8 5 )
■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 74 )
●The 12 volt battery terminal connections may be loose or corroded.
■The starter motor does not turn over, 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 74 )
Contact your Lexus dealer if the problem cannot be repaired, or if
repair procedures are unknown.

5
When trouble arises
569
5-2. Steps to take in an emergency
GS_G_U (OM30C80U)
June 29, 2011 10:30 am
If the shift lever cannot be shifted from “P”
If the shift lever cannot be shifted with your foot on the brake, there may be
a problem with the shift lock system (a system to prevent accidental opera-
tion of the shift lever). Have the vehicle inspected by your Lexus dealer
immediately.
The following steps may be used as an emergency measure to ensure that
the shift lever can be shifted.
Set the parking brake.
Turn the “ENGINE START STOP” switch to the ACCESSORY
mode.
Depress the brake pedal.
Pry the cover up with a flathead
screwdriver or equivalent.
Press the shift lock override but-
ton.
The shift lever can be shifted
while the button is pressed.
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