2019 Lexus GS350 key

5057-2. Steps to take in an emergency
GS350_300_OM_OM30G96U_(U)
7
When trouble arises
Ensure that the shift lever is in P and depress the brake pedal.
Touch the Lexus emblem side of the electronic key to the engine switch.
When the electronic key is detected, a buzze r sounds and the engine switch will turn
to IGNITION ON mode.
When the smart access system with push-button start is deactivated in customization
setting, the engine switch w ill turn to ACCESSORY mode.
Firmly depress the brake pedal and check that and a message (GS F
only) are shown on the multi-information display.
Press the engine switch.
In the event that the engine still cannot be started, contact your Lexus dealer.
Starting the engine
1
2
GS350/GS300GS F
3
4

5067-2. Steps to take in an emergency
GS350_300_OM_OM30G96U_(U)
■Stopping the engine
Shift the shift lever to P and press the engine switch as you normally do when stopping
the engine.
■Replacing the key battery
As the above procedure is a temporary measure, it is recommended that the electronic
key battery be replaced immediately when the battery is depleted. ( P. 412)
■Alarm
If the trunk is opened using the mechanical key when the alarm system is set, the alarm
may be triggered. ( P. 79)
■Changing engine switch modes
Release the brake pedal and press the engine switch in step above.
The engine does not start and modes will be changed each time the switch is
pressed.( P. 204)
■When the electronic key does not work properly
●Make sure that the smart access system wi th push-button start has not been deacti-
vated in the customization setting. If it is off, turn the function on.
(Customizable features:  P. 549)
●Check if battery-saving mode is set. If it is set, cancel the function. (P. 157)
WARNING
■When using the mechanical key and operating the power windows or moon roof
Operate the power window or moon roof afte r checking to make sure that there is no
possibility of any passenger having any of their body parts caught in the window or
moon roof.
Also, do not allow children to op erate the mechanical key. It is possible for children and
other passengers to get caught in the power window or moon roof.
3

507
GS350_300_OM_OM30G96U_(U)
7
When trouble arises
7-2. Steps to take in an emergency
If the vehicle battery is discharged
If you have a set of jumper (or booster) cables and a second vehicle with a 12-volt
battery, you can jump start your vehicle by following the steps below.
Confirm that the electron ic key is being carried.
When connecting the jumper (or booster) cables, depending on the situation, the
alarm may activate and doors locked. ( P. 80)
Open the hood. ( P. 375)
GS300/GS F: Remove the engine cover.
The following procedures may be used to start the engine if the vehicle’s bat-
tery is discharged.
You can also call your Lexus deal er or a qualified repair shop.
1
GS350/GS300GS F
2
3
GS300GS F
Raise the front of the engine cover to
remove the front clips, and then raise
the rear of the engine cover to
remove the rear clips.

5107-2. Steps to take in an emergency
GS350_300_OM_OM30G96U_(U)
■Starting the engine when the battery is discharged
The engine cannot be started by push-starting.
■To prevent battery discharge
●Turn off the headlights and the audio system while the engine is off.
●Turn off any unnecessary electrical components when the vehicle is running at a low
speed for an extended period, such as in heavy traffic.
■Charging the battery
The electricity stored in the battery will disc harge gradually even when the vehicle is not
in use, due to natural discharge and the draini ng effects of certain electrical appliances. If
the vehicle is left for a long time, the battery may discharge, and the engine may be
unable to start. (The battery recharges automatically during driving.)
■When recharging or replacing the battery
●In some cases, it may not be possible to un lock the doors using the smart access system
with push-button start when the battery is discharged. Use the wireless remote control
or the mechanical key to lock or unlock the doors.
●The engine may not start on the first attempt after the battery has recharged but will
start normally after the second attempt. This is not a malfunction.
●The engine switch mode is memorized by the vehicle. When the battery is recon-
nected, the system will return to the mode it was in before the battery was discharged.
Before disconnecting the battery, turn the engine switch off.
If you are unsure what mode the engine switch was in before the battery discharged, be
especially careful when reconnecting the battery.

GS350_300_OM_OM30G96U_(U)
5558-2. Customization
8
Vehicle specifications
■BSM (Blind Spot Monitor)* ( P. 286)
*: If equipped
■AFS (Adaptive Fron t-lighting System)* ( P. 223)
*: If equipped
■Door lock ( P. 143, 504)
FunctionDefault
settingCustomized setting
BSM (Blind Spot Monitor)OnOff—O—
123
FunctionDefaultsettingCustomized setting
AFS (Adaptive Front-lighting System)OnOff—O—
123
FunctionDefault
settingCustomized setting
Unlocking on second key turn
(Allows all doors to be unlocked by turn-
ing the mechanical key twice in the
driver’s door)
On
(Driver’s
door
unlocked in
one step, all
doors
unlocked in two steps)
Off
(All doors
unlocked in one
step)
——O
Automatic door lock
Shifting the
shift lever to
position
other than P
Off
O—O
Vehicle speed is approxi-
mately 12 mph (20 km/h) or
higher
Automatic door unlockShifting the
shift lever to
POff
O—ODriver’s door is opened
Locking/unlocking of the trunk when all
doors are locked/unlockedOnOff——O
123

558
GS350_300_OM_OM30G96U_(U)8-2. Customization
■Power windows and moon roof (
P. 181, 184)
■Automatic light control system ( P. 222)
■Lights (P. 222)
*: U.S.A. only
FunctionDefault
settingCustomized setting
Mechanical key linked operationOffOn——O
Wireless remote co ntrol linked opera-
tionOffOn
(Open only)——O
Buzzer sounds if operated using wire-
less remote controlOnOff——O
123
FunctionDefault settingCustomized setting
Light sensor sensitivityStandard-2 to 2O—O
Time elapsed before the headlights
automatically turn off30
seconds
Off
O—O60
seconds
90
seconds
Welcome light illumination controlOnOff——O
123
FunctionDefault settingCustomized setting
Daytime running lights*OnOffO—O
123

GS350_300_OM_OM30G96U_(U)
5618-2. Customization
8
Vehicle specifications
■Illumination (P. 335)
FunctionDefault
settingCustomized setting
Interior lights illumination controlOnOff——O
Time elapsed before the interior lights
turn off15
seconds
7.5
seconds
O—O30
seconds
Operation after the engine switch is
turned offOnOff——O
Operation when the doors are unlockedOnOff——O
Operation when you approach the vehi-
cle with the electronic key on your per-
son
OnOff——O
Footwell lightingOnOff——O
Outer foot lightsOnOff——O
Time elapsed before the outer foot lights
turn off15
seconds
Off
O—O
7.5
seconds
30
seconds
Enable/disable operation of the outer
foot lights when you approach the vehi-
cle with the electronic key on your per-
son
OnOff——O
Enable/disable operation of the outer
foot lights when the doors are unlocked
with the power door lock switchOnOff——O
123

580What to do if... (Troubleshooting)
GS350_300_OM_OM30G96U_(U)
What to do if... (Troubleshooting)
●If you lose your mechanical keys, ne w genuine mechanical keys can be made
by your Lexus dealer. ( P. 140)
●If you lose your electronic keys, the risk of vehicle theft increases significantly.
Contact your Lexus dealer immediately. ( P. 141)
●Is the electronic key battery weak or depleted? ( P. 412)
●Is the engine switch in IGNITION ON mode?
When locking the doors, turn the engine switch off. (P. 204)
●Is the electronic key left inside the vehicle?
When locking the doors, make sure that you have the electronic key on your
person.
●The function may not operate properly du e to the condition of the radio wave.
( P. 158)
●Is the child-protector lock set?
The rear door cannot be opened from in side the vehicle when the lock is set.
Open the rear door from outside and then unlock the child-protector lock.
( P. 146)
●The function to prevent the electronic key from being left inside the trunk will
operate and you can open th e trunk as usual. Take the key out from the trunk.
( P. 151)
If you have a problem, check the foll owing before contacting your Lexus
dealer.
The doors cannot be locked, unlocked, opened or closed
You lose your keys
The doors cannot be locked or unlocked
The rear door cannot be opened
The trunk lid is closed with the electronic key left inside