2015 Lexus IS250 ignition

1393-5. Opening, closing the windows and moon roof
3
Operation of each component
IS350/250_U (OM53C50U)
■The power windows can be operated when
The engine switch is in IGNITION ON mode.
■Operating the power windows after turning the engine off
The power windows can be operated for approximately 45 seconds after the engine
switch is turned to ACCESSORY mode or turned off. They cannot, however, be oper-
ated once either front door is opened.
■Jam protection function
If an object becomes caught between the window and the window frame, window travel
is stopped and the window is opened slightly.
■When the power window does not close normally
If the jam protection function is operating abnormally and a window cannot be closed,
perform the following operations using the power window switch on the relevant door.
●After stopping the vehicle, the window can be closed by holding the power window
switch in the one-touch closing position while the engine switch is turned to IGNITION
ON mode.
●If the window still cannot be closed even by carrying out the operation as explained
above, initialize the function by performing the following procedure.
Hold the power window switch in the one- touch closing position. Continue holding
the switch for a further 6 second s after the window has closed.
Hold the power window switch in the one- touch opening position. Continue holding
the switch for a further 2 seconds afte r the window has opened completely.
Hold the power window switch in the one- touch closing position once again. Con-
tinue holding the switch for a further 2 seconds after the window has closed.
If you release the switch while the window is moving, start again from the beginning.
If the window continues to close but then re-open slightly even after performing the
above procedure correctly, have the vehicle inspected by your Lexus dealer.
1
2
3

1423-5. Opening, closing the windows and moon roof
IS350/250_U (OM53C50U)
■The moon roof can be operated when
The engine switch is in IGNITION ON mode.
■Operating the moon roof after turning the engine off
The moon roof can be operated for approximately 45 seconds after the engine switch is
turned to ACCESSORY mode or turned off. It cannot, however, be operated once either
front door is opened.
■Jam protection function
If an object is detected between the moon r oof and the frame while the moon roof is clos-
ing or tilting down, travel is stopped and the moon roof opens slightly.
■Sunshade
The sunshade can be opened and closed manually. However, the sunshade will open
automatically when the moon roof is opened.
■Door lock linked moon roof operation
●The moon roof can be opened and closed using the mechanical key.* ( → P. 4 9 9 )
●The moon roof can be opened using the wireless remote control.* (→ P. 1 0 3 )
*: These settings must be customized at your Lexus dealer.

145
Driving4
IS350/250_U (OM53C50U)
4-1. Before drivingDriving the vehicle ...................... 146
Cargo and luggage .................... 153
Vehicle load limits ....................... 156
Trailer towing ................................. 157
Dinghy towing...............................158
4-2. Driving procedures Engine (ignition) switch ............ 159
Automatic transmission ............ 164
Turn signal lever ........................... 170
Parking brake .................................172
4-3. Operating the lights and wipers
Headlight switch ...........................173
Automatic High Beam ............... 176
Fog light switch.............................. 181
Windshield wipers and washer........................................... 182
4-4. Refueling Opening the fuel tank cap.......188 4-5. Using the driving support
systems
Cruise control .............................. 192
Dynamic radar cruise control .......................................... 196
LDA (Lane Departure Alert) ........208
Intuitive parking assist ................214
Lexus parking assist monitor ..........................................221
Driving mode select switch ........................................... 237
Driving assist systems............... 240
PCS (Pre-Collision System).......... 246
BSM (Blind Spot Monitor) ..... 252
• The Blind Spot Monitor function .................................... 255
• The Rear Cross Traffic Alert function......................... 257
4-6. Driving tips Winter driving tips ..................... 260

159
4
Driving
IS350/250_U (OM53C50U)4-2. Driving procedures
Check that the parking brake is set.
Check that the shift lever is in P.
Firmly depress the brake pedal.
and a message will be displayed
on the multi-information display.
If it is not displayed, the engine cannot be started.
Press the engine switch.
The engine will crank until 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.
Stop the vehicle.
Shift the shift lever to P.
Set the parking brake. ( →P. 1 7 2 )
Press the engine switch.
Release the brake pedal and check that the display on the meters is off.
Engine (ignition) switch
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
Stopping the engine
1
2
3
4
5

1604-2. Driving procedures
IS350/250_U (OM53C50U)
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.
The multi-information display will not be
displayed.
ACCESSORY mode
Some electrical components such as the
audio system can be used.
“ACCESSORY” will be displayed on the
meters.
IGNITION ON mode
All electrical components can be used.
“IGNITION ON” will be displayed on
the meters.
*: If the shift lever is in a position other thanP when turning off the engine, the
engine switch will be turned to ACCES-
SORY mode, not to off.
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 instead 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 Power OFF” is displayed on the multi-information display
and then press the engine switch once.
Check that “Turn Power OFF” on the multi-information display is off.
Changing engine switch modes
1
2
3
When stopping the engine with the sh ift lever in a position other than P
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2
3
4

1614-2. Driving procedures
4
Driving
IS350/250_U (OM53C50U)
■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 0 1
■Conditions affecting operation
→P. 116
■Notes for the entry function
→P. 117
■If the engine does not start
●Check that the shift lever is securely set in P. The engine may not start if the shift lever is
displaced out of P.
●The engine immobilizer system ma y not have been deactivated. (→P. 6 9 )
Contact your Lexus dealer.
■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 func tion. Operating the engine switch again auto-
matically cancels the steering lock.
■When the steering lock cannot be released
■Steering lock motor overheating prevention
To prevent the steering lock motor from overheating, operation of the motor may be sus-
pended if the engine is turned on and off repe atedly in a short period of time. In this case,
refrain from operating the engine switch. After about 10 seconds, the steering lock
motor will resume functioning. “Steering Lock active” will be displayed on the
multi-information display.
Check that the shift lever is in P. Press the
engine switch while turning the steering wheel
left and right.

1634-2. Driving procedures
4
Driving
IS350/250_U (OM53C50U)
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 “ACCESSORY” or “IGNITION ON” is displayed on the meters while the engine is
not running, 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 malfunction with the engine switch
If the engine switch seems to be operating somewhat differently than usual, such as the
switch sticking slightly, there may be a malf unction. Contact your Lexus dealer immedi-
ately.

1644-2. Driving procedures
IS350/250_U (OM53C50U)
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.
Automatic transmission
Shifting the shift lever