power steering Lexus GS350 2016 User Guide

GS350_200t_GS F_OM_OM30E86U_(U)
1994-2. Driving procedures
4
Driving
If the engine is stopped with the shift lever 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 minutes or IGNITION ON
mode (the engine is not running) for more than an hour with the 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 ti me when the engine is not running.
■Electronic key battery depletion
P. 1 3 4
■Conditions affe cting operation
 P. 1 5 2
■Notes for the entry function
P. 1 5 3
■If the engine does not start
●The engine immobilizer system may not have been deactivated. ( P. 7 2 )
Contact your Lexus dealer.
●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 stee ring lock function. Operating the engine switch again auto-
matically cancels the steering lock.
■When the steering lock cannot be released
When stopping the engine with the shift lever in a position other than P
“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.
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GS350_200t_GS F_OM_OM30E86U_(U)4-2. Driving procedures
■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 Access System with Elec. Ke y” will be displayed on the multi-informa-
tion display
The system may be malfunctioning. Have the vehicle inspected by your Lexus dealer
immediately.
■If the electronic key battery is depleted
 P. 4 2 9
■Operation of the engine switch
●When operating the engine switch, one short, firm press is enough. If the switch is
pressed improperly, the engine may not start or the engine switch mode may not
change. It is not necessary to press and hold the switch.
●If attempting to restart the engine immediat ely after turning the engine switch off, the
engine may not start in some cases. After tu rning the engine switch off, please wait a
few seconds before re starting the engine.
■If the smart access system with push-butto n start has been deactivated in a customized
setting
 P. 5 2 0
WA R N I N G
■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, re sulting 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. 4 4 3 )
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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GS350_200t_GS F_OM_OM30E86U_(U)4-5. Using the driving support systems
GS F
Normal mode
For normal driving.
Press the switch to change the driving mode to normal mode when Eco drive mode or
sport mode is selected. The normal mo
de indicator comes on in the meter.
Eco drive mode
Use Eco drive mode to help achieve low fuel consumption during trips that
involve frequent accelerating.
When not in Eco drive mode, if the driving mode select switch is turned to the left, the
Eco drive mode indicator comes on in the meter.
Sport mode
•SPORT S mode
Assists acceleration response by controlling the transmission and engine.
When not in SPORT S mode, if the driving mode select switch is turned to the
right, the “SPORT S” indicator comes on in the meter.
•SPORT S+ mode
Provides earlier downshift timing than SPORT S mode in order to maintain
a high engine speed and provides fa ster gear changes. This mode also
changes the steering feel and VDIM cont rol, making it suitable for power-
ful sporty driving.
When in SPORT S mode, if the driving mode select switch is turned to the right,
the “SPORT S+” indicator comes on in the meter.
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GS350_200t_GS F_OM_OM30E86U_(U)4-5. Using the driving support systems
Driving assist systems
◆ABS (Anti-lock Brake System)
Helps to prevent wheel lock when the brakes are applied suddenly, or if the
brakes are applied while drivin
g on a slippery road surface
◆Brake assist
Generates an increased level of braking force after the brake pedal is
depressed when the system detects a panic stop situation
◆VSC (Vehicle Stability Control)
Helps the driver to control skidding when swerving suddenly or turning on
slippery road surfaces
◆Enhanced VSC (Enhanced Vehicle Stability Control)
Provides cooperative control of the ABS, TRAC, VSC and EPS.
Helps to maintain directional stability when swerving on slippery road sur-
faces by controlling steering performance.
◆TRAC (Traction Control)
Helps to maintain drive power and prevent the drive wheels from spinning
when starting the vehicle or accelerating on slippery roads
◆Hill-start assist control
Helps to prevent the vehicle from rolling backward when starting on an
incline.
To help enhance driving safety and performance, the following systems oper-
ate automatically in response to various driving situations. Be aware, however,
that these systems are supplementary and should not be relied upon too
heavily when operating the vehicle.

GS350_200t_GS F_OM_OM30E86U_(U)
3094-5. Using the driving support systems
4
Driving
◆VGRS (Variable Gear Ratio Steering) (if equipped)
Adjusts the front wheel turning angle in accordance with the vehicle speed
and steering wheel movement
◆DRS (Dynamic Rear Steering) (if equipped)
Contributes to the turning characteristics and responsiveness of the vehicle
by slightly adjusting the rear wheel angle of the vehicle in accordance with
steering wheel movement
◆EPS (Electric Power Steering)
Employs an electric motor to reduce the amount of effort needed to turn the
steering wheel
◆AVS (Adaptive Variable Suspension system) (if equipped)
By independently controlling the dampin g force of the shock absorbers for
each of the 4 wheels according to the road and driving conditions, this system
helps riding comfort with superior st eering stability, and helps good vehicle
posture
When SPORT S+ mode is selected by the driving mode select switch, the
damping force is suitable for sporty driving ( P. 2 9 3 )
◆LDH (Lexus Dynamic Handling system) (if equipped)
Provides independent control of th e VGRS, DRS and EPS. Contributes to
turning characteristics at low speeds, responsiveness at medium speeds and
safety at high speeds by controlling the steering angle of the front and rear
wheels in accordance with the steering wheel operation and vehicle speed
◆VDIM (Vehicle Dynamics Integrated Management)
Provides integrated control of the ABS, brake assist, TRAC, VSC, hill-start
assist control, EPS, VGRS (if equi pped) and DRS (if equipped) systems
Helps to maintain vehicle stability when swerving on slippery road surfaces by
controlling the brakes, engine output, steering assist, and steering ratio and
rear wheel angle

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GS350_200t_GS F_OM_OM30E86U_(U)
5Interior features
5-1. Remote Touch screenRemote Touch/12.3-inch display ..........................................322
5-2. Using the air conditioning system and defogger
Front automatic air conditio ning system .........328
Rear air conditioning system ..........................................339
Heated steering wheel/ seat heaters/seat
ventilators ...................................342 5-3. Using the interior lights
Interior lights list ......................... 347• Interior lights ..........................348
• Personal lights .......................348
5-4. Using the storage features List of storage features ............350• Glove box ................................ 351
• Console box............................ 351
• Cup holders ........................... 352
• Auxiliary boxes ..................... 353
Trunk features .............................. 354
5-5. Using the other interior features
Other interior features ............358 • Sun visors ................................358
• Vanity mirrors ........................358
• Clock ........................................ 359
• Ashtrays ................................... 359
• Power outlets .........................360
• Armrest ....................................360
•Rear sunshade/ rear door sunshades .............361
•Trunk storage
extension ................................. 363
• Coat hooks ............................. 364
• Assist grips.............................. 364
• Garage door opener ......... 365
• LEXUS Enform Safety Connect ....................................372

443
GS350_200t_GS F_OM_OM30E86U_(U)
7
When trouble arises
7-1. Essential information
If your vehicle has to be stopped in an emergency
Steadily step on the brake pedal with both feet and firmly depress it.
Do not pump the brake pedal repeatedly as this will increase the effort required to
slow the vehicle.
Shift the shift lever to N.
If the shift lever is shifted to N
After slowing down, stop the vehicle in a safe place by the road.
Stop the engine.
If the shift lever cannot be shifted to N
Keep depressing the brake pedal with both feet to reduce vehicle speed as
much as possible.
To stop the engine, press and hold
the engine switch for 2 consecutive
seconds or more, or press it briefly 3
times or more in succession.
Stop the vehicle in a safe place by the road.
Only in an emergency, such as if it becomes impossible to stop the vehicle in
the normal way, stop the vehicle using the following procedure:
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2
3
4
3
Press and hold for 2 seconds or more
or press briefly 3 times or more
4
WA R N I N G
■If the engine has to be turned off while driving
Power assist for the brakes and steering wheel will be lost, making the brake pedal
harder to depress and the steering wheel heavier to turn. Decelerate as much as possi-
ble before turning off the engine.
5

4477-2. Steps to take in an emergency
GS350_200t_GS F_OM_OM30E86U_(U)
7
When trouble arises
Tighten down the towing eyelet
securely using a wheel nut wrench
or hard metal bar.
Securely attach cables or chains to the towing eyelet.
Take care not to damage the vehicle body.
Enter the vehicle being towed and start the engine.
If the engine does not start, turn th e engine switch to IGNITION ON mode.
Shift the shift lever to N and release the parking brake.
When the shift lever cannot be shifted: P. 5 1 7
■While towing
If the engine is not running, the power assist for the brakes and steering will not function,
making steering and br aking more difficult.
■Wheel nut wrench
Wheel nut wrench is installed in trunk. ( P. 4 9 2 , 5 0 3 )
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7

4537-2. Steps to take in an emergency
GS350_200t_GS F_OM_OM30E86U_(U)
7
When trouble arises
Electric power steering system warning light (warning buzzer) Indicates a malfunction in the EP S (Electric Power Steering) sys-
tem
 Have the vehicle inspected by your Lexus dealer immediately.
(Flashes)
(If equipped)
PCS (Pre-Collision System) warning light
●When the warning light flashes (and a buzzer sounds):
Indicates a malfunction in the PCS (Pre-Collision System)
 Have the vehicle inspected by your Lexus dealer immediately.
●When the warning light flashes (and a buzzer does not sound):
Indicates that the PCS (Pre-Collision System) is temporarily
unavailable, possibly due to either of the following:
• An area around the radar sensor or camera sensor being dirty
or covered with condensation, ice, stickers, etc.
 Clear the dirt, condensation, ice, stickers, etc.
( P. 233, 252, 260)
• Radar sensor or camera sensor being outside of its operational
condition range. (temperature etc.)
 If operational condition (temperature etc.) is satisfied, PCS
(Pre-Collision System) becomes to be available.
●When the warning li ght is illuminated:
Either the VSC (Vehicle Stability Control) system or PCS (Pre-
Collision System) is disabled or both are disabled.
 To enable the PCS (Pre-Collisio n System), enable both the
VSC system and PCS (Pre-Collision System).
(  P. 248, 311)
Slip indicator
Indicates a malfunction in:
• The VSC system;
•The TRAC system; or
• The hill-start assist control system
 Have the vehicle inspected by your Lexus dealer immediately.
The light will flash when the VSC or TRAC system is operating.
(Flashes)
(If equipped)
“A F S O F F ” i n d i c a t o r
Indicates a malfunction in the adaptive front-lighting system
 Have the vehicle inspected by your Lexus dealer immediately.
(Flashes)
(GS350/GS200t only)
Brake hold operated indicator
Indicates a malfunction in the brake hold system
 Have the vehicle inspected by your Lexus dealer.
Warning lightWarning light/Details/Actions

4567-2. Steps to take in an emergency
GS350_200t_GS F_OM_OM30E86U_(U)
■SRS warning light
This warning light system monitors the airbag sensor assembly, front impact sensors, side
impact sensors (front door), side impact sensors (front), side impact sensors (rear),
driver’s seat position sensor, driver’s seat belt buckle switch, front passenger occupant
classification system, “AIR BAG ON” indica tor light, “AIR BAG OFF” indicator light,
front passenger’s seat belt buckle switch, seat belt pretensioner assemblies, airbags,
interconnecting wiring and power sources. ( P. 4 3 )
■Front passenger detection sensor, seat belt reminder and warning buzzer
If luggage is placed on the front passenger seat, the front passenger detection sensor
may cause the warning light to flash and the wa rning buzzer to sound even if a passenger
is not sitting in the seat.
■If the malfunction indicator lamp comes on while driving
First check the following:
●Is the fuel tank empty?
If it is, fill the fuel tank immediately.
●Is the fuel tank cap loose?
If it is, tighten it securely.
The light will go off after several driving trips.
If the light does not go off even after severa l trips, contact your Lexus dealer as soon as
possible.
■Electric power steering system warning light (warning buzzer)
When the battery charge becomes insufficie nt or the voltage temporarily drops, the
electric power steering system warning light may come on and the warning buzzer may
sound.
■When the tire pressure warning light comes on
Check the tire inflation pressure and adjust to the appropriate level. Initializing the tire
pressure warning system will not turn off the tire pressure warning light.
■The tire pressure warning light may come on due to natural causes
The tire pressure warning light may come on due to natural causes such as natural air
leaks and tire inflation pressure changes caused by temperature. In this case, adjusting
the tire inflation pressure will turn off the warning light (after a few minutes).
■When a tire is replaced with a spare tire
The compact spare tire is not equipped with a tire pressure warning valve and transmit-
ter. If a tire goes flat, the tire pressure warning light will not turn off even though the flat
tire has been replaced with the spare tire.
■Conditions that the tire pressure warning system may not function properly
 P. 4 1 8
■If the tire pressure warning light frequently comes on after blinking for 1 minute
If the tire pressure warning light frequently comes on after blinking for 1 minute when the
engine switch is turned to IGNITION ON mo de, have it checked by your Lexus dealer.