Lexus GS250 2012 Owner's Manual

8207-2. Steps to take in an emergency
GS350/250_EE (OM30C36E)Take out the parking brake
release tool and the screw-
driver from the trunk. (P.
784, 799)
Fit the parking brake release tool
into the screwdriver handle.
Vehicles with a spare tire: Take out the spare tire. (P. 788)
Vehicles without a spare tire: Remove the center auxiliary box.
(P. 802)
Remove the plug.
Insert the tool and press it
down firmly while turning it
counterclockwise until it
stops.
Releasing the parking brake manually
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2
3
Vehicles with a compact
spare tire or an emergency
tire puncture repair kitVehicles with a full-size
spare tire
4

821
7 7-2. Steps to take in an emergency
When trouble arises
GS350/250_EE (OM30C36E)
Manual operation of the parking brake
The parking brake cannot be set manually.
CAUTION
When releasing the parking brake manually
Shift the shift lever to P, turn the engine switch off and chock the tires.
Failure to do so may cause the vehicle to move, resulting in an accident.
Turn the engine switch off and check that the parking brake indicator is
off. Failure to do so may cause the system to operate and turn the inserted
parking brake release tool, resulting in an injury.

8227-2. Steps to take in an emergency
GS350/250_EE (OM30C36E)
If the electronic key does not operate properly
Doors
Use the mechanical key
(P. 119) in order to perform
the following operations:
Locks all the doors
Closes the windows and
moon roof (turn and hold)
*
Unlocks all the doors
Opens the windows and
moon roof (turn and hold)
*
*
: This setting must be customized
at any authorized Lexus dealer
or repairer, or another duly qual-
ified and equipped professional.
If communication between the electronic key and vehicle is inter-
rupted (P. 130) or the electronic key cannot be used because the
battery is depleted, the smart entry & start system and wireless
remote control cannot be used. In such cases, the doors and trunk
can be opened and the engine can be started by following the pro-
cedure below.
Locking and unlocking the doors, unlocking the trunk and key
linked functions
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2
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8237-2. Steps to take in an emergency
7
When trouble arises
GS350/250_EE (OM30C36E)
Trunk
Turn the mechanical key
clockwise to open.
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.
The engine switch will turn to
IGNITION ON mode.
When the smart entry & start sys-
tem is deactivated in customization
setting, the engine switch will turn
to ACCESSORY mode.
Firmly depress the brake pedal and check that is shown on
the multi-information display.
Press the engine switch.
In the event that the engine still cannot be started, contact any
authorized Lexus dealer or repairer, or another duly qualified and
equipped professional.
Starting the engine
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2
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8247-2. Steps to take in an emergency
GS350/250_EE (OM30C36E)
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. 697)
Alarm (if equipped)
Using the mechanical key to lock the doors will not set the alarm system.
If a door is unlocked using the mechanical key when the alarm system is set,
the alarm may be triggered.
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. 208)
When the electronic key does not work properly
Make sure that the smart entry & start system has not been deactivated in
the customization setting. If it is off, turn the function on.
(Customizable features P. 855)
Check if battery-saving mode is set. If it is set, cancel the function. (P.
129)
3

8257-2. Steps to take in an emergency
7
When trouble arises
GS350/250_EE (OM30C36E)
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.
Open the hood. (P. 657)
The following procedures may be used to start the engine if the
vehicle’s battery is discharged.
You can also call any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional.
1

8267-2. Steps to take in an emergency
GS350/250_EE (OM30C36E)Connect the jumper cables according to the following procedure:
Connect a positive jumper cable clamp to the positive (+) bat-
tery terminal on your vehicle.
Connect the clamp on the other end of the positive cable to the
positive (+) battery terminal on the second vehicle.
Connect a negative cable clamp to the negative (-) battery ter-
minal on the second vehicle.
Connect the clamp at the other end of the negative cable to a
solid, stationary, unpainted metallic point away from the bat-
tery and any moving parts, as shown in the illustration.
Start the engine of the second vehicle. Increase the engine speed
slightly and maintain at that level for approximately 5 minutes to
recharge the battery of your vehicle.
Open and close any of the doors of your vehicle with the engine
switch off.
Maintain the engine speed of the second vehicle and start the
engine of your vehicle by turning the engine switch to IGNI-
TION ON mode.
2
Ty p e A
Ty p e B
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2
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4
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8277-2. Steps to take in an emergency
7
When trouble arises
GS350/250_EE (OM30C36E)Once the vehicle’s engine has started, remove the jumper cables
in the exact reverse order from which they were connected.
Once the engine starts, have the vehicle inspected at any authorized
Lexus dealer or repairer, or another duly qualified and equipped
professional as soon as possible.
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 discharge gradually even when the
vehicle is not in use, due to natural discharge and the draining effects of cer-
tain 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 auto-
matically during driving.)
When recharging or replacing the battery
For vehicles with an alarm: make sure the key is not inside the vehicle when
recharging or replacing the battery to prevent the doors from being locked
with the key left inside the vehicle when the alarm operates.
In some cases, it may not be possible to unlock the doors using the smart
entry & start system 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
reconnected, 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.
6

8287-2. Steps to take in an emergency
GS350/250_EE (OM30C36E)
CAUTION
Avoiding battery fires or explosions
Observe the following precautions to prevent accidentally igniting the
flammable gas that may be emitted from the battery:
Make sure each jumper cable is connected to the correct terminal and that
it is not unintentionally in contact with any other than the intended termi-
nal.
Do not allow the other end of the jumper cable connected to the “+” termi-
nal to come into contact with any other parts or metal surfaces in the area,
such as brackets or unpainted metal.
Do not allow the + and - clamps of the jumper cables to come into contact
with each other.
Do not smoke, use matches, cigarette lighters or allow open flame near the
battery.
Battery precautions
The battery contains poisonous and corrosive acidic electrolyte, while
related parts contain lead and lead compounds. Observe the following pre-
cautions when handling the battery:
When working with the battery, always wear safety glasses and take care
not to allow any battery fluids (acid) to come into contact with skin, cloth-
ing or the vehicle body.
Do not lean over the battery.
In the event that battery fluid comes into contact with the skin or eyes,
immediately wash the affected area with water and seek medical attention.
Place a wet sponge or cloth over the affected area until medical attention
can be received.
Always wash your hands after handling the battery support, terminals, and
other battery-related parts.
Do not allow children near the battery.

829
7 7-2. Steps to take in an emergency
When trouble arises
GS350/250_EE (OM30C36E)
NOTICE
When handling jumper cables
When connecting the jumper cables, ensure that they do not become entan-
gled in the cooling fans or engine drive belt.