stop start Lexus IS350 2018 / LEXUS 2018 IS300,IS350 (OM53E34U) Owner's Guide

5558-2. Steps to take in an emergency
8
When trouble arises
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
*: The engine may not be restarted depending on the vehicle condition.
■Warning messages
→P. 549
■Warning buzzer
→P. 526
Once⎯
Indicates that the engine switch has
been pressed while driving
→ Except when emergency stop-
ping of the vehicle is needed,
immediately release the engine
switch.
Interior
buzzerExteriorbuzzerWarning messageDetails/Actions
(Flashes)

5718-2. Steps to take in an emergency
8
When trouble arises
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
■Stopping the engine
Shift the shift lever to P and press the engine switch as you normally do when stopping
the engine.
■Replacing the key battery
As the above procedure is a temporary measure, it is recommended that the electronic
key battery be replaced immediately when the battery is depleted. ( →P. 500)
■Changing engine switch modes
Release the brake pedal and press the engine switch in step above.
The engine does not start and modes will be changed each time the switch is pressed.
( → P. 179)
■When the electronic key does not work properly
●Make sure that the smart access system wi th push-button start has not been deacti-
vated in the customization setting. If it is off, turn the function on.
(Customizable features: → P. 611)
●Check if battery-saving mode is set. If it is set, cancel the function. (→P. 128)
WARNING
■When using the mechanical key and operating the power windows or moon roof
Operate the power window or moon roof afte r checking to make sure that there is no
possibility of any passenger having any of their body parts caught in the window or
moon roof.
Also, do not allow children to op erate the mechanical key. It is possible for children and
other passengers to get caught in the power window or moon roof.
3

5788-2. Steps to take in an emergency
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
Add coolant if necessary.
Water can be used in an emerge ncy if coolant is unavailable.
Start the engine and turn the air conditio ning system on to check that the radi-
ator cooling fans operate and to check for coolant leaks from the radiator or
hoses.
The fans operate when the air conditioning system is turned on immediately after a
cold start. Confirm that the fans are operating by checking the fan sound and air flow.
If it is difficult to check these, turn the air conditioning system on and off repeatedly.
(The fans may not operate in freezing temperatures.)
If the fans are not operating:
Stop the engine immediately an d contact your Lexus dealer.
If the fans are operating:
Have the vehicle inspected at the nearest Lexus dealer.
Check if “Engine Coolant Temp High St op in a Safe Place See Owner’s Man-
ual” is shown on the multi-information display.
If the message does not disappear:
Stop the engine and contact your Lexus dealer.
If the message is not displayed:
Have the vehicle inspected at the nearest Lexus dealer.
5
Engine (IS350 AWD/IS350/
IS300 AWD)Engine (IS300)
Intercooler (IS300)
6
7
8

5808-2. Steps to take in an emergency
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
Stop the engine. Set the parking br ake and shift the shift lever to P.
Remove the mud, snow or sand from around the rear wheels.
Place wood, stones or some other materi al under the rear wheels to help pro-
vide traction.
Restart the engine.
Shift the shift lever to D or R and rele ase the parking brake. Then, while exer-
cising caution, depress the accelerator pedal.
■When it is difficult to free the vehicle
If the vehicle becomes stuck
Carry out the following procedures if the tires spin or the vehicle becomes
stuck in mud, dirt or snow:
Press to turn off TRAC.
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635What to do if... (Troubleshooting)
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
●The function to prevent the electronic key from being left inside the trunk will
operate and you can open the trunk as usual. Take the key out from the trunk.
(→ P. 124)
●Did you press the engine switch while firmly depressing the brake pedal?
(→ P. 178)
●Is the shift lever in P? ( →P. 180)
●Is the electronic key anywhere detectable inside the vehicle? ( →P. 127)
●Is the steering wheel unlocked? (→ P. 180)
●Is the electronic key battery weak or depleted?
In this case, the engine can be started in a temporary way. (→P. 570)
●Is the battery discharged? ( →P. 572)
●Is the engine switch in IGNITION ON mode?
If you cannot release the shift lever by depressing the brake pedal with the
engine switch in IGNITION ON mode. ( →P. 188)
●It is locked automatically to prevent theft of the vehicle. ( →P. 180)
The trunk lid is closed with the electronic key left inside
If you think something is wrong
The engine does not start
The shift lever cannot be shifted from
P even if you depress the brake
pedal
The steering wheel cannot be turned after the engine is stopped

636What to do if... (Troubleshooting)
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
●Is the window lock switch pressed?
The power window except for the one at the driver’s seat cannot be operated
if the window lock switch is pressed. ( →P. 154)
●The auto power off function will be operated if the vehicle is left in ACCES-
SORY or IGNITION ON mode (the engine is not running) for a period of
time. ( →P. 180)
●The seat belt reminder light is flashing
Are the driver and the front passe nger wearing the seat belts? (→P. 524)
●The parking brake indicator is on
Is the parking brake released? ( →P. 192)
Depending on the situation, other types of warning buzzer may also sound.
(→ P. 522, 529)
●Did anyone inside the vehicle open a door during setting the alarm?
The sensor detects it and the alarm sounds. (→ P. 71)
Do one of the following to de activate or stop the alarms:
• Unlock the doors or open the trunk.
• Turn the engine switch to ACCESSOR Y or IGNITION ON mode, or start
the engine. The windows do not open or close by operating the power window
switches
The engine switch is turned off automatically
A warning buzzer sounds during driving
An alarm is activated and the horn sounds

643Alphabetical index
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
E-mail........................................................... 371
Eco drive mode .....................................288
Eco Driving Indicator............................. 101
EDR (Event data recorder) ...................10
Elapsed time ............................................ 104
Electric Power Steering (EPS) ....... 293
Warning light .......................................523
Electronic key ........................................... 110 Battery-saving function .................... 128
If the electronic key does not operate properly............................ 569
Replacing the battery ...................... 500
Emergency, in case of If a warning message is displayed ........................................529
If the electronic key does not operate properly ....... 569
If the engine will not start................567
If the vehicle battery is discharged ......................................... 572
If the warning buzzer sounds.................................................. 522
If the warning light turns on........... 522
If you have a flat tire ......................... 556
If you think something is wrong.............................................. 520
If your vehicle becomes stuck ..................................................... 580
If your vehicle has to be stopped in an emergency ........... 513
If your vehicle needs to be towed ........................................ 514
If your vehicle overheats ................576 Emergency flashers .............................. 512
Engine ....................................................... 587
ACCESSORY mode ....................... 179
Compartment ....................................... 471
Engine switch ........................................178
Hood........................................................468
How to start the engine....................178
Identification number...................... 586
If the engine will not start ............... 567
Ignition switch (engine switch) .....178
Overheating......................................... 576
Engine coolant ....................................... 476 Capacity................................................ 590
Checking ............................................... 476
Preparing and checking before winter .................................... 297
Engine coolant temperature gauge .......................................................... 81
Engine immobilizer system ................. 68
Engine oil ..................................................473 Capacity................................................ 588
Checking ............................................... 473
Preparing and checking before winter .................................... 297
Engine oil maintenance data ............475
Engine switch ........................................... 178
Enhanced VSC ......................................292
EPS (Electronic Power Steering) ........ 293 Warning light ....................................... 523
Event data recorder (EDR)................... 10
E

651Alphabetical index
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
Shift lock system..................................... 188
Shift position and gear position ...........81
Side airbags ............................................... 36
Side marker lights...................................194
Light switch ............................................ 194
Replacing light bulbs ....................... 509
Side mirrors ............................................... 151 Adjusting and folding.......................... 151
BSM (Blind Spot Monitor)............. 251
Linked mirror function when reversing ................................. 152
Mirror position memory .................. 139
Side turn signal lights ........................... 190 Replacing light bulbs ....................... 509
Turn signal lever .................................. 190
Side windows ...........................................154
Slip indicator........................................... 523
Smart access system with push-button start ....................... 127 Antenna location .................................. 127
Entry functions .............................. 116, 122
Starting the engine ............................. 178
SMS (Short message service)........... 371
Snow mode .............................................. 184
Snow tires ................................................ 299 Spare tire ................................................. 556
Inflation pressure................................593
Storage location ................................. 557
Spark plug ............................................... 590
Specifications......................................... 584
Speedometer .............................................. 81
Speed indicator........................................ 83
Steering lock ........................................... 180 Column lock release ........................ 180
Steering wheel ........................................ 147 Adjustment.............................................. 147
Audio switches .................................... 310
Heated steering wheel .....................416
Power easy access system .............139
Steering wheel position memory ..............................139
Stop lights Replacing light bulbs ...................... 509
Storage feature ....................................... 421
Stuck If the vehicle becomes stuck....... 580
Sun visors.................................................. 427
Sunshade Rear .......................................................... 429
Roof ............................................................159
*: For vehicles with a naviga tion system, refer to the
“NAVIGATION SYSTEM OWNER’S MANUAL”.