2008 Lexus GS350 key

5
When trouble arises
523
5-2. Steps to take in an emergency
GS_G_U
May 13, 2008 5:14 pm
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 slow ly, 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 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 2 9 )
Contact your Lexus dealer if the problem cannot be repaired, or if
repair procedures are unknown.

5
When trouble arises
525
5-2. Steps to take in an emergency
GS_G_U
May 13, 2008 5:14 pm
If you lose your keys
New genuine Lexus keys can be made by your Lexus dealer using one of
the other keys and the key number stamped on your key number plate.

526
5-2. Steps to take in an emergency
GS_G_U
May 13, 2008 5:14 pm
If the electronic key does not operate properly
Locking and unlocking the doors, unlocking the trunk and key linked
functions
Doors Using the mechanical key in order
to perform the following opera-
tions:
Locks all doors
Closes the windows/moon roof
(turn and hold)
Unlocks the door
Turning the key rearward unlocks
the driver’s door.
Turning the key once again unlocks
the other doors.
Opens the windows/moon roof
(turn and hold)
If communication between the electron ic key and vehicle is interrupted
(
P. 26) or the electronic key cannot be used because the battery is
depleted, the smart access system with push-button start and wireless
remote control cannot be used. In such cases, the doors and trunk can be
opened or the engine can be started by following the procedure below.

5
When trouble arises
527
5-2. Steps to take in an emergency
GS_G_U
May 13, 2008 5:14 pm
Tr u n kTurn the mechanical key clock-
wise to open.
Changing “ENGINE START STOP” switch modes and starting the
engine
Put the shift lever in “P” and apply the brakes. Touch the Lexus emblem side of
the electronic key to the
“ENGINE START STOP” switch.
An alarm will sound to indicate that
the start function cannot detect the
electronic key that is touched to
the “ENGINE START STOP”
switch if any of the doors is opened
and closed while the key is touched
to the switch.
STEP1
STEP2

528
5-2. Steps to take in an emergency
GS_G_U
May 13, 2008 5:14 pm
To change the “ENGINE START STOP” switch modes: Within 10
seconds of the buzzer sounding , release the brake pedal and
press the “ENGINE START STOP” switch. Modes can be
changed each time the switch is pressed. (
P. 122)
To start the engine: Press the “ENGINE START STOP” switch
within 10 seconds after the buzz er sounds, keeping the brake
pedal depressed.
If the “ENGINE START STOP” switch still cannot be operated, contact
your Lexus dealer.
■Stopping the engine
Shift the shift lever to “P” and press th e “ENGINE START STOP” switch as you nor-
mally do when stopping the engine.
■Replacing the key battery
As the above procedure is the temporary measure, it is recommended that the
electronic key battery be replaced i mmediately when the battery depletes.
(  P. 440)
STEP3

5
When trouble arises
529
5-2. Steps to take in an emergency
GS_G_U
May 13, 2008 5:14 pm
If the 12 volt battery is discharged
The following procedures may be used to start the engine if the 12 volt bat-
tery is discharged. 
You can call your Lexus dealer or qualified repair shop.
If you have a set of jumper (or booster) cables and a second vehicle
with a 12 volt battery, you can jump start your Lexus following the steps
below.
Open the door using the mechani cal key, then open the hood.
GS350: Remove the engine compartment covers.
Connecting the jumper cables.
GS460
STEP1
STEP2

571
6-2. Customization
6
Vehicle specifications
GS_G_U
May 13, 2008 5:14 pm
ItemFunctionDefault settingCustomizedsetting
Door lock (
P. 3 7 )
Unlocking using a key
Driver’s door
unlocked in 1-
step, all doors
unlocked 
in 2-step
All doors
unlocked in 1-step
Speed-detecting auto-
matic door lock functionOFFON
Opening driver’s door
unlocks all doors OFFON
Shift the shift lever to “P”
unlocks all doorsONOFF
Shift the shift lever to posi-
tion other than “P” locks
all doors
ONOFF
Pow e r w i n -
dows 
(
P. 6 4 )
Linked door lock opera-
tionONOFF
Linked door key opera-
tionOpen and closeOpen only
Close only
Wireless remote control
linked operationONOFF
Linked entry functionONOFF

572
6-2. Customization
GS_G_U
May 13, 2008 5:14 pm
*: Vehicles sold outside Canada
ItemFunctionDefault settingCustomizedsetting
Moon roof 
(
P. 6 7 )
Linked door lock opera-
tionONOFF
Linked door key opera-
tionOpen and closeOpen only
Close only
Linked operation of com-
ponents when door key is
used
Slide onlyTilt only
Wireless remote control
linked operationONOFF
Linked operation of com-
ponents when wireless
remote control used
Slide onlyTilt only
Linked entry functionONOFF
Automatic
light control
system 
(
P. 1 4 2 )
Light sensor sensitivityLevel 3Levels 1 to 5
Ti m e e l a p s e d b e f o r e
headlights automatically
turn off after doors are
closed
30 seconds
0 seconds
60 seconds
90 seconds
Daytime running lightONOFF*