Lexus GS F 2017 Owner's Manual

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7-2. Steps to take in an emergency
7
When trouble arises
GS350_200t_GS F_OM_OM30F83E_(EE)
When the engine does not start, the foll owing steps can be used as an interim
measure to start the engine if the engine switch is functioning normally:
Press the parking brake switch to ch eck that the parking brake is set.
(  P. 256)
Parking brake indicator will come on.
Shift the shift lever to P.
Turn the engine switch to ACCESSORY mode.
Press and hold the engine switch for about 15 seconds while depressing the
brake pedal firmly.
Even if the engine can be started using the above steps, the system may be mal -
functioning. Have the vehicle inspected by any authorized Lexus retailer or
Lexus authorized repairer, or any reliable repairer.
Emergency start function
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5927-2. Steps to take in an emergency
GS350_200t_GS F_OM_OM30F83E_(EE)
If the parking brake cannot be released
●Shift the shift lever to P.
● Turn the engine switch off.
● Check that the parking brake indicator is off.
● Chock the tires.
Take out the parking brake release
tool and the screwdriver from the
trunk. ( P. 558, 575)
Fit the parking brake release tool into
the screwdriver handle.
Vehicles with spare tire: Take out the spare tire. ( P. 563)
Vehicles without spare tire: Remove the center auxiliary box. ( P. 578)
In the event that the battery is disc harged or switch operation does not
release the parking brake, the parking brake can be released manually using
the procedure below. This procedure should be performed only if necessary,
such as in an emergency.
If the switch cannot be operated even when the battery is normal, the parking
brake system may be malfunctioning. Have the vehicle inspected by any
authorized Lexus retailer or Lexus au thorized repairer, or any reliable
repairer immediately.
Before releasing the parking brake manually
Releasing the parking brake manually
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7-2. Steps to take in an emergency
7
When trouble arises
GS350_200t_GS F_OM_OM30F83E_(EE)
Remove the plug.
Insert the tool and press it down
firmly while turning it counterclock-
wise until it stops.
■Manual operation of the parking brake
The parking brake cannot be set manually.
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Type AType B
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WARNING
■When releasing the parking brake manually
●Shift the shift lever to P, turn the engine switch off and choc k the tires. Failure to do so
may cause the vehicle to move, resulting in an accident.
●Turn the engine switch off and check that th e 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.

5947-2. Steps to take in an emergency
GS350_200t_GS F_OM_OM30F83E_(EE)
If the electronic key does not operate properly
■Doors
Use the mechanical key (P. 155)
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 retailer or Lexus autho-
rized repairer, or any reliable repairer.
■Trunk
Turn the mechanical key clockwise
to open.
If communication between the electronic key and vehicle is interrupted ( P. 175)
or the electronic key cannot be used be cause 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
procedure below.
Locking and unlocking the doors, unlocking the trunk and key linked
functions
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595
7-2. Steps to take in an emergency
7
When trouble arises
GS350_200t_GS F_OM_OM30F83E_(EE)
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
buzzer sounds and the engine switch
will turn to IGNITION ON mode.
When the smart entry & start system is
deactivated in customization setting, the
engine switch will 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 any authorized Lexus
retailer or Lexus authorized repairer, or any reliable repairer.
■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. 491)
■Alarm (if equipped)
Using the mechanical key to lock the doors or trunk will not set the alarm system.
If a door or trunk are unlocked using the me chanical key when the alarm system is set,
the alarm may be triggered. ( P. 92)
■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. 241)
■When the electronic key does not work properly
●Make sure that the smart entry & start syst em has not been deactivated in the customi-
zation setting. If it is off, turn the function on.
(Customizable features: P. 634)
●Check if battery-saving mode is set. If it is set, cancel the function. (P. 174)
Starting the engine
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5967-2. Steps to take in an emergency
GS350_200t_GS F_OM_OM30F83E_(EE)
WARNING
■When using the mechanical key and operating the power windows or moon roof (if
equipped)
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 operate the me chanical key. It is possible for children and
other passengers to get caught in the power window or moon roof.

597
7
7-2. Steps to take in an emergency
When trouble arises
GS350_200t_GS F_OM_OM30F83E_(EE)
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 electronic key is
being carried.
When connecting the jumper (or
booster) cables, depending on the situa-
tion, the alarm may activate and doors
locked. ( P. 94)
Open the hood. ( P. 451)
GS200t/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 any authorized Lexus retailer or Lexus authorized repairer,
or any reliable repairer.
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GS200t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.

5987-2. Steps to take in an emergency
GS350_200t_GS F_OM_OM30F83E_(EE)
Connect the jumper cables according to the following procedure:
GS350
GS200t
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599
7-2. Steps to take in an emergency
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When trouble arises
GS350_200t_GS F_OM_OM30F83E_(EE)
GS F
Connect a positive jumper cable clamp to the positive (+) battery 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 terminal on the
second vehicle
Connect the clamp at the other end of the negative cable to a solid, station-
ary, unpainted metallic point away from the battery 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 IGNITION ON mode.
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
retailer or Lexus authorized repairer, or any reliable repairer as soon as possible.
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6007-2. Steps to take in an emergency
GS350_200t_GS F_OM_OM30F83E_(EE)
■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 componen ts 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 draining 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 unlock the doors using the smart entry & start
system when the battery is discharged. Use the wireless remote control or the mechan-
ical 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 batter y discharged, be
especially careful when reconnecting the battery.