2020 Lexus IS350 ignition

5929-1. Specifications
IS350 AWD/IS350/IS300 AWD/IS300_U
*: The fluid capacity is a reference quantity. If replacement is necessary, contact your Lexus dealer.
Cooling system
Capacity*
IS350 AWD/
IS350/IS300
AWD 9.9 qt. (9.4 L, 8.3 Imp. qt.)
IS300
Engine
8.2 qt. (7.8 L, 6.9 Imp. qt.)
Intercooler
3.2 qt. (3.0 L, 2.6 Imp. qt.)
Coolant type
Use either of the following: • “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based non- silicate, non-amine, non-nitrite, and non-borate
coolant with long-life hybrid organic acid tech-
nology
Do not use plain water alone.
Ignition system (Spark plug)
IS350 AWD/IS350/ IS300 AWDIS300
Make DENSO FK20HBR8 NGK DILFR7K9G
Gap0.031 in. (0.8 mm)0.035 in. (0.9 mm)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.
Electrical system
Battery
Open voltage at 68F
(20 C):12.3 V or higher
(Check the voltage 20 minutes after the engine and all
lights are turned off.)
If the voltage is lower than the standard value, charge
the battery.
Charging rates5 A max.

6219-2. Customization
9
Vehicle specifications
IS350 AWD/IS350/IS300 AWD/IS300_U
■Vehicle customization
●When the smart access system with push-button start is off, the entry unlock function
cannot be customized.
●When the doors remain closed after unlocking the doors and the timer activated auto-
matic door lock function activates, signals will be generated in accordance with the
operation buzzer volume and operational si gnal (Emergency flashers) function set-
tings.
●Some settings can be changed using a switch or the audio system screen. If a setting is
changed using a switch, the changed setting will not be reflected on the audio system screen until the engine switch is turned off and then to IGNITION ON mode.
WARNING
■During customization
As the engine needs to be running during customization, ensure that the vehicle is
parked in a place with adequate ventilation. In a closed area such as a garage, exhaust
gases including harmful carbon monoxide (CO) may collect and enter the vehicle. This
may lead to death or a serious health hazard.
NOTICE
■During customization
To prevent battery discharge, ensure that the engine is running while customizing fea-
tures.

636
IS350 AWD/IS350/IS300 AWD/IS300_UWhat to do if... (Troubleshooting)
What to do if... (Troubleshooting)
●If you lose your mechanical keys, ne
w genuine mechanical keys can be made
by your Lexus dealer. ( P. 120)
●If you lose your electronic keys, the risk of vehicle theft increases significantly.
Contact your Lexus dealer immediately. ( P. 123)
●Is the electronic key battery weak or depleted? ( P. 502)
●Is the engine switch in IGNITION ON mode?
When locking the doors, turn the engine switch off. (P. 187)
●Is the electronic key left inside the vehicle?
When locking the doors, make sure that you have the electronic key on your
person.
●The function may not operate properly du e to the condition of the radio wave.
( P. 137)
●Is the child-protector lock set?
The rear door cannot be opened from in side the vehicle when the lock is set.
Open the rear door from outside and then unlock the child-protector lock.
( P. 127)
If you have a problem, check the foll owing before contacting your Lexus
dealer.
The doors cannot be locked, unlocked, opened or closed
You lose your keys
The doors cannot be locked or unlocked
The rear door cannot be opened

637What to do if... (Troubleshooting)
IS350 AWD/IS350/IS300 AWD/IS300_U
●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. 132)
●Did you press the engine switch while firmly depressing the brake pedal?
( P. 186)
●Is the shift lever in P? ( P. 188)
●Is the electronic key anywhere detectable inside the vehicle? ( P. 135)
●Is the steering wheel unlocked? ( P. 188)
●Is the electronic key battery weak or depleted?
In this case, the engine can be started in a temporary way. (P. 573)
●Is the battery discharged? ( P. 575)
●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. 196)
●It is locked automatically to prevent theft of the vehicle. ( P. 188)
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

638What to do if... (Troubleshooting)
IS350 AWD/IS350/IS300 AWD/IS300_U
●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. 162)
●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. 188)
●The seat belt reminder light is flashing
Are the driver and the front passe nger wearing the seat belts? (P. 527)
●The parking brake indicator is on
Is the parking brake released? ( P. 200)
Depending on the situation, other types of warning buzzer may also sound.
( P. 525, 532)
●Did anyone inside the vehicle open a door during setting the alarm?
The sensor detects it and the alarm sounds. ( P. 78)
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

645Alphabetical index
IS350 AWD/IS350/IS300 AWD/IS300_U
E-mail.........................................................380
Eco drive mode ..................................... 297
Eco Driving Indicator........................... 109
EDR (Event data recorder) ...................10
Elapsed time .............................................. 112
Electric Power Steering (EPS) ....... 302Warning light .......................................526
Electronic key ........................................... 118 Battery-saving function .....................137
If the electronic key does not operate properly............................. 572
Replacing the battery ...................... 502
Emergency, in case of If a warning message is displayed ........................................532
If the electronic key does not operate properly ........ 572
If the engine will not start............... 570
If the vehicle battery is discharged .........................................575
If the vehicle is trapped in rising water ......................................... 516
If the warning buzzer sounds................................................. 525
If the warning light turns on.......... 525
If you have a flat tire ......................... 559
If you think something is wrong...............................................523
If your vehicle becomes stuck ..................................................... 583
If your vehicle has to be stopped in an emergency ........... 515
If your vehicle needs to be towed ........................................ 517
If your vehicle overheats ................579 Emergency flashers .............................. 514
Engine ....................................................... 589
ACCESSORY mode .......................187
Compartment ..................................... 473
Engine switch ....................................... 186
Hood........................................................ 470
How to start the engine................... 186
Identification number...................... 588
If the engine will not start ............... 570
Ignition switch (engine switch) .... 186
Overheating......................................... 579
Engine coolant .......................................478 Capacity................................................. 592
Checking ............................................... 478
Preparing and checking before winter ....................................306
Engine coolant temperature gauge ........................................................ 89
Engine immobilizer system .................. 76
Engine oil ..................................................475 Capacity................................................ 590
Checking ............................................... 475
Preparing and checking before winter ....................................306
Engine oil maintenance data ............ 477
Engine switch ...........................................186
Enhanced VSC .......................................301
EPS (Electronic Power Steering) ........ 302 Warning light ....................................... 526
Event data recorder (EDR)................... 10
E

647Alphabetical index
IS350 AWD/IS350/IS300 AWD/IS300_U
Hands-free system (for cellular phone) ............................. 371
HD Radio
® system .............................. 338
Head restraints ........................................152
Headlights ............................................... 202 AFS (Adaptive Front-lighting System) ............................................... 203
Light switch ...........................................202
Replacing light bulbs ........................... 511
Headlights cleaner................................ 210
Heaters Air conditioning system ....................417
Heated steering wheel ....................426
Outside rear view mirrors ............. 422
Seat heaters .......................................... 427
Hill-start assist control ......................... 301
Hood .......................................................... 470 Open ........................................................470
Hooks Cargo hooks ........................................435
Coat hooks ............................................ 441
Retaining hooks (floor mat) ............. 26
Horn .............................................................156 I/M test ...................................................... 467
Identification
Engine .................................................... 588
Vehicle .................................................... 587
Ignition switch (engine switch) .........186
Illuminated entry system ....................429
Immobilizer system ................................. 76
Indicators .................................................... 86
Initialization Engine oil maintenance data ........477
Maintenance ........................................ 462
Moon roof .............................................. 168
Multi-information display................ 103
Power windows....................................163
Tire pressure warning system ............................... 487
Initiators (tire pressure warning system) ................................ 493
Inside door handle lights ................... 428
Inside rear view mirror......................... 157
Instrument panel light control .............92
Intercooler .............................................. 480
Intercooler coolant...............................478 Capacity................................................. 592
Checking ............................................... 478
Preparing and checking before winter ....................................306
Interior lights ...........................................429 Wattage ................................................. 597
Intuitive parking assist ........................ 260
HI

655Alphabetical index
IS350 AWD/IS350/IS300 AWD/IS300_U
Garage door opener switches ............................................... 442
Heated steering wheel switch....................................................426
Ignition switch ....................................... 186
Intuitive parking assist ..................... 260
LDA (Lane Departure Alert) switch.................................................... 243
Light switches ......................................202
Meter control switches ...................... 97
Moon roof switches........................... 166
Outside rear view mirror switches ................................................ 159
Paddle shift switches ......................... 193
Power window switches ................. 162
Rear sunshade switch ......................439
Rear window and outside rear view mirror defoggers
switch.................................................... 422
Seat heater switches......................... 427
Seat ventilator switches .................. 427
Snow mode switch............................. 192
Steering wheel switch ......................... 97 “SOS” button .......................................... 68
Talk switch............................................. 382
Telephone switches.......................... 382
Tilt and telescopic
steering control switch ................. 155
Tire pressure warning reset switch ................................................... 487
Trunk opener main switch ................131
Trunk opener switch ......................... 130
Vehicle-to-vehicle distance switch ................................................... 254
VSC OFF switch ...............................303
Window lock switch .......................... 162
Windshield wiper and washer switch ...........................210
Windshield wiper de-icer switch ................................................... 422