2017 Lexus GS F engine

2404-2. Driving procedures
GS350_200t_GS F_OM_OM30F83E_(EE)
Engine (ignition) switch
Press the parking brake switch to check that the parking brake is set.
(  P. 256)
Parking brake indicator will come on.
Check that the shift lever is set in P.
Firmly depress the brake pedal.
and a message (GS F only) will be displa yed on the multi-information display.
If it is not displayed, the engine cannot be started.
Press the engine switch shortly and
firmly.
When operating the engine switch, one
short, firm press is enough.
It is not necessary to press and hold the
switch.
The engine will crank un til it starts or for
up to 30 seconds, whichever is less.
Continue depressing the brake pedal
until the engine is completely started.
The engine can be started from any
engine switch mode.
Performing the following operations when carrying the electronic key on your
person starts the engine or changes engine switch modes.
Starting the engine
1
2
3
4

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4-2. Driving procedures
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Driving
GS350_200t_GS F_OM_OM30F83E_(EE)
Stop the vehicle.
Set the parking brake ( P. 256), and shift the shift lever to P.
Press the engine switch.
Release the brake pedal and check that “POWER ON” on the multi-informa-
tion display is off.
Modes can be changed by pressing the engine switch with brake pedal released.
(The mode changes each time the switch is pressed.) Off *
The emergency flashers can be used.
“POWER ON” will not be displayed on
the multi-information display.
ACCESSORY mode
Some electrical components such as the
audio system can be used.
“POWER ON” will be displayed on the
multi-information display.
IGNITION ON mode
All electrical components can be used.
“POWER ON” will be displayed on the
multi-information display.
* : If the shift lever is in a position other than
P when turning off the engine, the
engine switch will be turned to ACCES-
SORY mode, not to off.
Stopping the engine
Changing engine switch modes
1
2
3
4

2424-2. Driving procedures
GS350_200t_GS F_OM_OM30F83E_(EE)
If the engine is stopped with the shift le ver in a position other than P, the engine
switch will not be turned off but inst ead be turned to ACCESSORY mode. Per-
form the following procedure to turn the switch off:
Check that the parking brake is set.
Shift the shift lever to P.
Check that “Turn Off Vehicle” is displayed on the multi-information display
and then press the engine switch once.
Check that “Turn Off Vehicle” on the multi-information display is off.
■Auto power off function
If the vehicle is left in ACCESSORY mode for more than 20 min utes or IGNITION ON
mode (the engine is not running) for more than an hour with th e shift lever in P, the engine
switch will automatically turn off. However, this function cannot entirely prevent battery
discharge. Do not leave the vehicle with the engine switch in ACCESSORY or IGNI-
TION ON mode for long periods of time when the engine is not running.
■Electronic key battery depletion  P. 156
■Conditions affecting operation P. 175
■Notes for the push-start function P. 177
■If the engine does not start
●The engine immobilizer system ma y not have been deactivated. (P. 86)
Contact any authorized Lexus retailer or Le xus authorized repairer, or any reliable
repairer.
●Check that the shift lever is securely set in P. The engine may not start if the shift lever is
displaced out of P. “Shift to P position to Start” will be displayed on the multi-information
display.
■Steering lock
After turning the engine switch off and opening and closing the doors, the steering wheel
will be locked due to the steering lock functi on. Operating the engine switch again auto-
matically cancels the steering lock.
When stopping the engine with the shift lever in a position other than P
1
2
3
4

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4-2. Driving procedures
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Driving
GS350_200t_GS F_OM_OM30F83E_(EE)
■When the steering lock cannot be released
■Steering lock motor overheating prevention
To prevent the steering lock motor from overheating, the motor may be suspended if the
engine is turned on and off repeatedly in a sh ort period of time. In this case, refrain from
operating the engine. After about 10 seconds, the steering lock motor will resume func-
tioning.
■When “Check Entry & Start System” will be displayed on the multi-information display
The system may be malfunctioning. Have the vehicle inspected by any authorized Lexus
retailer or Lexus authorized repairer, or any reliable repairer immediately.
■If the electronic key battery is depleted P. 491
■Operation of the engine switch
●If the switch is not pressed shortly and fi rmly, the engine switch mode may not change
or the engine may not start.
●If attempting to restart the engine immediately after turning the engine switch off, the
engine may not start in some cases. After turning the engine switch off, please wait a
few seconds before restarting the engine.
■If the smart entry & start system has be en deactivated in a customized setting
 P. 642
“Steering Lock active” will be displayed on the
multi-information display.
Check that the shift lever is set in P. Press the
engine switch while turning the steering wheel
left and right.

2444-2. Driving procedures
GS350_200t_GS F_OM_OM30F83E_(EE)
WARNING
■When starting the engine
Always start the engine while sitting in the driver’s seat. Do not depress the accelerator
pedal while starting the engine under any circumstances.
Doing so may cause an accident resu lting in death or serious injury.
■Caution while driving
If engine failure occurs while the vehicle is moving, do not lock or open the doors until
the vehicle reaches a safe and complete stop. Activation of the steering lock in this cir-
cumstance may lead to an accident, resulting in death or serious injury.
■Stopping the engine in an emergency
If you want to stop the engine in an emergency while driving the vehicle, press and hold
the engine switch for more than 2 seconds, or press it briefly 3 times or more in succes-
sion. ( P. 509)
However, do not touch the engine switch while driving except in an emergency. Turning
the engine off while driving will not cause lo ss of steering or braking control, but the
power assist to these systems will be lost. Th is will make it more difficult to steer and
brake, so you should pull over and stop the vehicle as soon as it is safe to do so.

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4-2. Driving procedures
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GS350_200t_GS F_OM_OM30F83E_(EE)
NOTICE
■To prevent battery discharge
●Do not leave the engine switch in ACCESSORY or IGNITION ON mode for long
periods of time without the engine running.
●If “POWER ON” is displayed on the multi- information display, the engine switch is
not off. Exit the vehicle after turning the engine switch off.
●Do not stop the engine when the shift lever is in a position other than P. If the engine is
stopped in another shift lever position, the engine switch will not be turned off but
instead be turned to ACCESSORY mode. If the vehicle is left in ACCESSORY
mode, battery discharge may occur.
■When starting the engine
●Do not race a cold engine.
●If the engine becomes difficult to start or stalls frequently, have your vehicle checked
by any authorized Lexus retailer or Lexus au thorized repairer, or any reliable repairer
immediately
■Symptoms indicating a malfunction with the engine switch
If the engine switch seems to be operating so mewhat differently than usual, such as the
switch sticking slightly, there may be a malfunction. Contact any authorized Lexus
retailer or Lexus authorized repairer, or any reliable repairer immediately.

2464-2. Driving procedures
GS350_200t_GS F_OM_OM30F83E_(EE)
Automatic transmission
While the engine switch is in IGNITION ON mode, move the shift lever
with the brake pedal depressed.
When shifting the shift lever between P and D, make sure that the vehicle is com-
pletely stopped.
* 1
: To improve fuel efficiency and reduce noises , set the shift lever in D for normal driving.
* 2
: Any gear range can be fixed when driving in M mode.
Shifting the shift lever
Shift position purpose
Shift positionObjective or function
PParking the vehicle/starting the engine
RReversing
NNeutral
(Condition in which the power is not transmitted)
DNormal driving *1
MM mode driving
*2
(  P. 249)

2484-2. Driving procedures
GS350_200t_GS F_OM_OM30F83E_(EE)
To drive using temporary shift range selection, operate the “-” or “+” paddle shift
switch.
When the “-” paddle shift switch is operated, the shift range will be downshifted
to a range that enables engine braking force that is suitable to driving conditio ns.
When the “+” paddle shift switch is operated, the shift range will be one gear
upper than the gear in use during normal D position driving.
Changing the shift range allows restrictio n of the highest gear, preventing unnec-
essary upshifting and enabling the level of engine braking force to be selected.
Upshifting
Downshifting
6-speed models: The selected shift range, from D1 to D6, will be displayed in the
meter.
8-speed models: The selected shift range, from D1 to D8, will be displayed in the
meter.
To return to normal D position driving, the “+” paddle shift switch must be held down
for a period of time.
■Shift ranges and their functions
A lower shift range will provide greater engi ne braking forces than a higher shift
range.
Selecting shift ranges in the D position
GS350/GS200tGS F
1
2
Meter display
Function6-speed
models8-speed models
D2 - D6D2 - D8A gear in the range between 1 and the selected gear is
automatically chosen depending on vehicle speed and
driving conditions
D1Setting the gear at 1