display Lexus GS350 2015 TIPS FOR THE NAVIGATION SYSTEM / LEXUS 2015 GS350 (OM30E15U) Service Manual

GS350_OM_OM30E15U_(U)
1814-2. Driving procedures
4
Driving
■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 short period of time. In this case,
refrain from operating the engine. After about 10 seconds, the steering lock motor
will resume functioning.
■When “Check Access System with Elec. Key” will be displayed on the multi-infor-
mation display
The system may be malfunctio ning. Have the vehicle inspected by your Lexus dealer
immediately.
■If the electronic key battery is depleted
 P. 4 2 7
■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 st art or the engine switch mode may not
change. It is not necessary to press and hold the switch.
●If attempting to restart the engine immediately after turning the engine switch off,
the engine may not start in some cases. Af ter turning the engine switch off, please
wait a few seconds before restarting the engine.
■If the smart access system with push-but ton start has been deactivated in a cus-
tomized setting
 P. 5 2 2
“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.

GS350_OM_OM30E15U_(U)
1834-2. Driving procedures
4
Driving
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 your Lexus dealer immediately.
■Symptoms indicating a malfun ction with the engine switch
If the engine switch seems to be operatin g somewhat differently than usual, such as
the switch sticking slightly, there may be a malfunction. Contact your Lexus dealer
immediately.

186
GS350_OM_OM30E15U_(U)
4-2. Driving procedures
To drive using temporary shift range selection, operate the “-” or “+” pad-
dle shift switch.
When the “-” paddle shift switch is oper ated, the shift range will be down-
shifted to a range that enables engine braking force that is suitable to driv-
ing conditions. When the “+” paddle shift switch is operated, the shift
range will be one gear upper than the gear in use during normal D posi-
tion driving.
Changing the shift range allows restriction of the highest gear, preventing
unnecessary upshifting and enabling th e 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 engine braking forces than a higher shift
range.
Selecting shift ranges in the D position
1
2
Meter displayFunction6-speed models8-speed models
D2 - D6D2 - D8
A 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

GS350_OM_OM30E15U_(U)
1874-2. Driving procedures
4
Driving
To enter M mode, shift the shift lever to M. Gears can then be selected by
operating the shift lever or paddle shif t switches, allowing you to drive in
the gear of your choosing.
Upshifting
Downshifting
The gear changes once every time the
shift lever or paddle shift switch is
operated.
6-speed models:
The selected gear, from M1 to M6, will
be fixed and displayed in the meter.
8-speed models:
The selected gear, from M1 to M8, will
be fixed and displayed in the meter.
When in the M position, the gear will not change unless the shift lever
or paddle 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 tempera-
ture is low.
●When automatic transmission fluid temperature is high.
●When the needle of the tachometer is in the red zone (the range
which exceeds the allowable revs of the engine).
Selecting gears in the M position
1
2

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GS350_OM_OM30E15U_(U)
4-2. Driving procedures
In the following situations, the gear will not shift even if the shift lever or
paddle shift switches are operated.
●“1st Gear not available due to slippe ry road surface” is displayed on
the multi information display.
●The vehicle speed is low (upshift only).
■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 or engine oil becomes high, protec-
tion control is performed temporarily. Wh en “Transmission Fluid High Temperature”
is displayed on the multi-information display, have the vehicle inspected by your
Lexus dealer.
■Downshifting restrictions warning buzzer
To help ensure safety and driving perfor mance, downshifting operation may some-
times be restricted. In some circumstances, downshifting 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 driv-
ing in snow mode.
■If the shift lever cannot be shifted from P
 P. 5 1 9

219
GS350_OM_OM30E15U_(U)4-5. Using the driving support systems
4
Driving
Dynamic radar cruise control
Dynamic radar cruise co ntrol supplements conventional cruise control
with a vehicle-to-vehicle distance co ntrol. In vehicle-to-vehicle distance
control mode, the vehicle automatica lly accelerates or decelerates in
order to maintain a set following distance from vehicles ahead.
Vehicle-to-vehicle distance but-
ton
Display
Set speed
Indicators
Cruise control switch

: If equipped
Summary of functions
1
2
3
4
5

220
GS350_OM_OM30E15U_(U)
4-5. Using the driving support systems
Press the “ON/OFF” button to
activate the cruise control.
Radar cruise control indicator will
come on.
Press the button again to deactivate
the cruise control.
Accelerate or decelerate the
vehicle to the desired speed, and
push the lever down to set the
speed.
“SET” indicator will be displayed.
The vehicle speed at the moment the
lever is released becomes the set
speed.
Setting the vehicle speed (vehicle-to-vehicle distance control
mode)
1
2

GS350_OM_OM30E15U_(U)
2214-5. Using the driving support systems
4
Driving
To change the set speed, operate the lever until the desired set speed is
displayed.
Increases the speed
Decreases the speed
Fine adjustment: Momentarily move
the lever in the desired direction.
Large adjustment: Hold the lever in
the desired direction.
In the vehicle-to-vehicle distance control mode, the set speed will be increased or
decreased as follows:• When the set speed is shown in “MPH”
Fine adjustment: By approximately 1 mp h (1.6 km/h) each time the lever is
operated
Large adjustment: By approximately 5 mph (8 km/h) for each 0.75 seconds
the lever is held
• When the set speed is shown in “km/h”
Fine adjustment: By approximately 0.6 mph (1 km/h) each time the lever is
operated
Large adjustment: By approximately 3.1 mph (5 km/h) for each 0.75 seconds
the lever is held
In the constant speed control mode ( P. 226), the set speed will be increased or
decreased as follows:
Fine adjustment: By approximately 1 mph (1.6 km/h) each time the lever is oper-
ated
Large adjustment: The set speed can be increased or decreased continually until
the lever is released.
Adjusting the set speed
1
2

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GS350_OM_OM30E15U_(U)
4-5. Using the driving support systems
Pressing the button changes the
vehicle-to-vehicle distance as fol-
lows:Long
Medium
Short
The vehicle-to-vehicle distance is set
automatically to lo ng mode when the
engine switch is turned to IGNITION
ON mode.
If a vehicle is running ahead of you, the
preceding vehicle mark will also be
displayed.
Select a distance from the table belo w. Note that the distances shown cor-
respond to a vehicle speed of 50 mph (80 km/h). Vehicle-to-vehicle dis-
tance increases/decreases in accordance with vehicle speed.
Changing the vehicle- to-vehicle distance
Preceding
vehicle mark
1
2
3
Vehicle-to-vehicle distance settings
Distance optionsVehicle-to-vehicle distance
LongApproximately 160 ft. (50 m)
MediumApproximately 130 ft. (40 m)
ShortApproximately 100 ft. (30 m)

GS350_OM_OM30E15U_(U)
2254-5. Using the driving support systems
4
Driving
Example of follow-up cruising
When following a vehicle driving slower than the set speed
The system continues follow-up cruising while adjusting for changes in the speed
of the vehicle ahead in order to maintain the vehicle-to-vehicle distance set by the
driver.
Example of acceleration
When there are no longer any vehi cles ahead driving slower than the
set speed
The system accelerates until the set speed is reached. The system then returns to
constant speed cruising.
When your vehicle is too close to a vehicle ahead, and sufficient auto-
matic deceleration via the cruise co ntrol is not possible, the display will
flash and the buzzer will sound to alert the driver. An example of this
would be if another driver cuts in front of you while you are following a
vehicle. Apply the brakes to ensure an appropriate vehicle-to-vehicle dis-
tance.
■Warnings may not occur when
In the following instance s, there is a possibility that the warnings will not
occur:
●When the speed of the vehicle ahea d matches or exceeds your vehi-
cle speed
●When the vehicle ahead is traveling at an extremely slow speed
●Immediately after the cruise control speed was set
●At the instant the accelerator is applied
Approach warning
3
4