2017 Lexus GS350 engine

2504-2. Driving procedures
GS350_200t_GS F_OM_OM30F83E_(EE)
When in the M position, the gear will not change unless the shift lever or pad-
dle shift switches are operated.
However, even when in the M position, the gears will be automatically
changed in the following situation: ●When vehicle speed drops (downshift only).
● When the automatic transmission fluid or engine coolant temperature is
low.
● GS350/GS200t: When automatic transmission fluid temperature is high.
● GS350/GS200t: When the needle of the tachometer is in the red zone
(the range which exceeds the allowable revs of the engine).
In the following situations, the gear will not shift even if the shift lever or paddle
shift switches are operated. ● “Slippery Road. Cannot Shift to Lower Gear.” is displayed on the multi-
information display.
● The vehicle speed is low (upshift only).

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Driving
GS350_200t_GS F_OM_OM30F83E_(EE)
The Gear Shift Indicator display is a guide to help the driver achieve improv ed
fuel economy and reduced exhaust emissions within limits of engine perfor-
mance.
When not in operation
Shift-up indicator
■Gear Shift Indicator function ●Multi-information display: This function automatically operates during M
mode.
Head-up display (GS200t): This function automatically operates during M
mode when the ECO Driving Indicator is displayed on the head-up display. ( P. 143)
Head-up display (GS F): This function automatically operates during M
mode when the tachometer is displayed on the head-up display or when
the head-up rev indicator is displayed on the head-up display. ( P. 143)
● By following the Shift-up indicator and shifting up accordingly, it is possible
to achieve improved fuel economy and reduced exhaust emissions.
● The Gear Shift Indicator does not have a similar function for down-shifting.
● Depending on the driving conditions, the Gear Shift Indicator may not dis-
play the Shift-up indicator while driving in M mode.
Gear Shift Indicator (if equipped)
GS200tGS F
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2524-2. Driving procedures
GS350_200t_GS F_OM_OM30F83E_(EE)
■Automatic deactivation of shift range selection in the D position
Shift range selection in the D position will be deactivated in the following situations:
●When the vehicle comes to a stop
●If the accelerator pedal is depressed for more than a certain period of time
●When the shift lever is shifted to other than D
■To protect automatic transmission
When the temperature of the transmission fluid becomes high, protection control is per-
formed temporarily. When “Transmission Fl uid Temp High See Owner’s Manual” is dis-
played on the multi-information display, ha ve the vehicle inspected by any authorized
Lexus retailer or Lexus authorized repairer, or any reliable repairer.
■Downshifting restrict ions warning buzzer
To help ensure safety and driving performance, downshifting operation may sometimes
be restricted. In some circumstances, downsh ifting may not be possible even when the
shift lever or paddle shift switch is operated. (A buzzer will sound twice.)
■Snow mode automatic deactivation
Snow mode is automatically deactivated if the engine switch is turned off after driving in
snow mode.
■When driving with cruise control, dynamic radar cruise control or dynamic radar
cruise control with full-speed range activated
Even when performing the following actions with the intent of enabling engine braking,
engine braking will not activate because cruise control, dynamic radar cruise control or
dynamic radar cruise control with full-speed range will not be canceled.
●6-speed models: While driving in the D position, downshifting to 5 or 4.
(  P. 331, 355)
●8-speed models: While driving in the D position, downshifting to 7, 6, 5 or 4. ( P. 331, 343, 355)
●When switching the driving mode to spor t mode while driving in D position. (P. 358)
■Restraining sudden start (Drive-Start Control)
●When the following unusual operation is performed, the engine output may be
restrained.

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Driving
GS350_200t_GS F_OM_OM30F83E_(EE)
■If the shift lever cannot be shifted from P
First, check whether the brake pedal is being depressed.
If the shift lever cannot be shifted with your foot on the brake p edal, there may be a prob-
lem with the shift lock system. Have the vehicle inspected by any authorized Lexus
retailer or Lexus authorized repairer, or any reliable repairer immediately.
The following steps may be used as an emergency measure to ensure that the shift lever
can be shifted.
Releasing the shift lock:
Press the parking brake switch to check that the parking brake is set. ( P. 256)
Parking brake indicat or will come on.
Turn the engine switch to off.
Depress the brake pedal.
Type A: Pry the cover up with a flathead
screwdriver or equivalent tool.
To prevent damage to the cover, cover the tip
of the screwdriver with a rag.
Press the shift lock override button.
The shift lever can be shifted while the button
is pressed.
Type A
Type B
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4-2. Driving procedures
Driving
GS350_200t_GS F_OM_OM30F83E_(EE)
Turn signal lever
The lever will return to its original position immediately after operation.
Right turn
Lane change to the right (move the
lever partway and release it)
The right hand signals will flash 3 times.
Lane change to the left (move the
lever partway and release it)
The left hand signals will flash 3 times.
Left turn
■If the turn signals do not stop flashing af ter turning left or right, or if you want
to stop them flashing
Operate the lever in the opposite direction to either position or .
If you move the lever to either position or , the selected turn signals will
flash.
■Turn signals can be operated when
The engine switch is in IGNITION ON mode.
■If the indicator flashes faster than usual
Check that a light bulb in the front or rear turn signal lights has not burned out.
■If the turn signals stop flashing before a lane change has been performed
Operate the lever again.
Operating instructions
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Driving
GS350_200t_GS F_OM_OM30F83E_(EE)
■Parking brake operation
●When the engine switch is not in IGNI TION ON mode, the parking brake cannot be
released using the parking brake switch.
●When the engine switch is not in IGNITION ON mode, automatic mode (automatic
brake setting and releasing) is not available.
●If the parking brake is operated repeatedly over a short period of time, the system may
restrict operation to prevent overheating. If this happens, refrain from operating the
parking brake. Normal operation wi ll return after about 1 minute.
●Vehicles with towing package: In situations such as when parking while towing a trailer,
the maximum amount of braking force can be used by pressing the parking brake
switch with the parking brake already set.
●Vehicles without towing package: In situations such as when parking on a steep slope *,
the maximum amount of braking force can be used by pressing the parking brake
switch with the parking brake already set.
* : Use wheel chocks when parking on a steep slope.
■Parking brake operation sound
When the parking brake operates, a motor sound (whirring sound) may be heard. This
does not indicate a malfunction.
■Parking brake indicator light
●Depending on the engine switch mode, the parking brake indicator light will come on
and stay on as described below:
IGNITION ON mode: Comes on until the parking brake is released.
Not in IGNITION ON mode: Stays on for approximately 15 seconds.
●When the engine switch is turned off with the parking brake set, the parking brake indi-
cator light will stay on for about 15 seco nds. This does not indicate a malfunction.
■When there is a malfunction in the system
Warning lights and/or warning message will turn on or flash. ( P. 520, 524)
Depending on the condition, the park ing brake indicator light may flash.
■Parking the vehicle P. 222
■Parking brake engaged warning buzzer P. 528
■Usage in winter time P. 383

2604-2. Driving procedures
GS350_200t_GS F_OM_OM30F83E_(EE)
■When the parking brake is set automatically while the system is holding the brakes
The parking brake will not be released auto matically. Perform one of the following proce-
dures to release the parking brake and conf irm that the parking brake indicator light
turns off. ( P. 256)
●With the brake pedal depressed, operate the parking brake switch.
●Fasten your seat belt, check that the shift leve r is in either D or R and slowly depress the
accelerator pedal.
■Warning message and buzzers
Warning messages and buzzers are used to indicate a system malfunction or to inform
the driver of the need for caution. ( P. 524)
WARNING
■When the vehicle is on a steep incline
When using the brake hold system on a steep incline exercise caution. The brake hold
function may not hold the vehicle in such a situation.
■When stopped on a slippery road
The system cannot stop the vehicle when the gripping ability of the tires has been
exceeded. Do not use the system when stopped on a slippery road.
NOTICE
■When parking the vehicle
The brake hold system is not designed fo r use when parking the vehicle for a long
period of time. Turning the en gine switch off while the system is holding the brake may
release the brake, which would cause the ve hicle to move. When operating the engine
switch, depress the brake pedal, set the pa rking brake and shift the shift lever to P.

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4-2. Driving procedures
Driving
GS350_200t_GS F_OM_OM30F83E_(EE)
ASC (Active Sound Control) (GS F)
The ASC system can be operated
when the driving mode select switch is
in the following modes. (P. 361)
● SPORT S mode/customized mode
(powertrain control is set to
“POWER”): Sounds are output from
the rear.
● SPORT S+ mode: When the engine
speed is in the low-to-medium
speed range, sounds are output
from the rear. At high engine speeds,
sounds are mainly output from the
front.
Press the ASC switch. The indicator on switch will turn off.
Press the switch again to turn the system
back on.
Even if the indicator is illuminated, when
the driving mode select switch is in Nor-
mal, Eco drive or customized mode
(powertrain control is not set to
“POWER”), ASC does not operate.
■Automatic reactivation of ASC system
Even after the ASC system has been turned off, turning the engine off and then on again
will automatically react ivate the ASC system.
The ASC system directs certain sounds from the front and rear of the cabin to
the vehicle interior, and harmonizes these sounds with the actual sound of the
engine and exhaust in order to allow the driver to feel acceleration and the
state of the engine more strongly.
Disabling the ASC system