2018 Lexus IS350 differential

1714-1. Before driving
4
Driving
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
NOTICE
■When driving the vehicle
●Do not depress the accelerator and brake pedals at the same time during driving, as
this may restrain the engine output.
●Do not use the accelerator pedal or depre ss the accelerator and brake pedals at the
same time to hold the vehicle on a hill.
■When parking the vehicle
Always set the parking brake, and shift the sh ift lever to P. Failure to do so may cause
the vehicle to move or the vehicle may acce lerate suddenly if the accelerator pedal is
accidentally depressed.
■Avoiding damage to vehicle parts
●Do not turn the steering wheel fully in either direction and hold it there for an
extended period of time.
Doing so may damage the power steering motor.
●When driving over bumps in the road, drive as slowly as possible to avoid damaging
the wheels, underside of the vehicle, etc.
●IS300: Make sure to idle the engine imme diately after high-load driving. Stop the
engine only after the turb ocharger has cooled down.
Failure to do so may cause damage to the turbocharger.
■If you get a flat tire while driving
A flat or damaged tire may cause the following situations . Hold the steering wheel
firmly and gradually depress the brake pedal to slow down the vehicle.
●It may be difficult to control your vehicle.
●The vehicle will make abnormal sounds or vibrations.
●The vehicle will lean abnormally.
Information on what to do in case of a flat tire ( →P. 556)
■When encountering flooded roads
Do not drive on a road that has flooded af ter heavy rain etc. Doing so may cause the
following serious damage to the vehicle:
●Engine stalling
●Short in electrical components
●Engine damage caused by water immersion
In the event that you drive on a flooded road and the vehicle is flooded, be sure to have
your Lexus dealer check the following:
●Brake function
●Changes in quantity and quality of oil and fluid used for the engine, transmission,
transfer (AWD models), differentials, etc.
●Lubricant condition for the propeller shaft, bearings and suspension joints (where
possible), and the function of all joints, bearings, etc.

4707-3. Do-it-yourself maintenance
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
◆Rear
IS350 AWD/IS350/IS300 AWD/IS300 (vehicles without LSD [Limited
Slip Differential])
IS350 (vehicles with LSD [Limited Slip Differential])

5919-1. Specifications
9
Vehicle specifications
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
*: The fluid capacity is a reference quantity.
If replacement is necessary, contact your Lexus dealer.
Your Lexus vehicle is filled with “Toyota Genuine Differential Gear Oil” at the factory.
Use Lexus approved “Toyota Genuine Differen tial Gear Oil” or an equivalent oil of
matching quality to satisfy the above specific ation. Please contact your Lexus dealer for
further details.
Automatic transmission
Fluid capacity*
IS350 (2WD)10.0 qt. (9.5 L, 8.4 Imp. qt.)
IS350 AWD/
IS300 AWD
(AWD)
10.6 qt. (10.0 L, 8.8 Imp. qt.)
IS3009.2 qt. (8.7 L, 7.7 Imp. qt.)
Fluid typeToyota Genuine ATF WS
NOTICE
■Automatic transmission fluid type
Using transmission fluid other than “Toyota Genuine ATF WS” may cause deterioration
in shift quality, locking up of your transm ission accompanied by vibration, and ulti-
mately damage the transmission of your vehicle.
Front differential (AWD models)
Oil capacity 0.74 qt. (0.70 L, 0.61 Imp. qt.)
Oil type and viscosity
Toyota Genuine Differential gear oil GL-5 or equivalent
Above 0 °F (-18 °C): SAE90
Below 0 °F (-18 °C): SAE80W or SAE80W-90

5929-1. Specifications
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
IS350 AWD/IS350/IS300 AWD/IS300 (vehicles without LSD [Limited
Slip Differential])
IS350 (vehicles with LSD [Limited Slip Differential])
*: Your Lexus vehicle is filled with “Toyota Genu ine Differential Gear Oil” at the factory.
Use Lexus approved “Toyota Genuine Differen tial Gear Oil” or an equivalent oil of
matching quality to satisfy the above specif ication. Please contact your Lexus dealer
for further details.
*1: Minimum pedal clearance when depressed wi th a force of 112.4 lbf (500 N, 51.0 kgf)
while the engine is running.
*2: Parking brake pedal travel when depressed with a force of 67.4 lbf (300 N, 30.6 kgf)
Rear differential
Oil capacity1.42 qt. (1.35 L, 1.19 Imp. qt.)
Oil type and viscosityToyota Genuine Differential gear oil LT
75W-85 GL-5 or equivalent
*
Oil capacity1.42 qt. (1.35 L, 1.19 Imp. qt.)
Oil type and viscosityToyota Genuine Differential gear oil LX
75W-85 GL-5 or equivalent
*
Brakes
Pedal clearance*12WD4.2 in. (107 mm) Min.
AWD4.7 in. (118 mm) Min.
Pedal free play0.04 — 0.24 in. (1.0 — 6.0 mm)
Brake pad wear limit0.04 in. (1.0 mm)
Parking brake lining wear limit0.04 in. (1.0 mm)
Parking brake pedal travel*27 ⎯ 10 clicks
Fluid typeSAE J1703 or FMVSS No. 116 DOT 3, or
SAE J1704 or FMVSS No. 116 DOT 4
Steering
Free playLess than 1.2 in. (30 mm)

642Alphabetical index
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
Daytime running light system ............196
Defogger
Outside rear view mirrors ...............412
Rear window ..........................................412
Windshield ..............................................412
Differential Front differential ................................... 591
Rear differential ...................................592
Dimension ............................................... 584
Dinghy towing.......................................... 177
Display Drive information .................................. 92
Dynamic radar cruise control......239
LDA (Lane Departure Alert with steering control) .......236
Multi-information display ..................86
Warning message .............................529
Do-it-yourself maintenance ............. 466
Door courtesy lights Location ................................................... 418
Wattage ................................................. 595 Doors ........................................................... 116
Automatic door locking and unlocking system ..................... 119
Door lock.................................................. 118
Open door warning buzzer ............ 117
Open door warning light .............. 524
Outside rear view mirrors ............... 151
Rear door child-protector ............... 119
Side windows ........................................154
Drive information .....................................92
Drive-Start Control..................... 165, 187
Driver’s and front passenger’s seat belt reminder light....................524
Driver’s seat position memory.......... 139
Driving ........................................................ 164 Break-in tips ...........................................166
Correct driving posture .................... 28
Driving mode select switch ..........288
Procedures .............................................164
Winter drive tips ................................ 297
Dynamic radar cruise control ......... 239
D

648Alphabetical index
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
Moon roof................................................. 158
Door lock linked moon roof operation ..................... 159
Jam protection function ................... 159
Operation ............................................... 158
MP3 disc.................................................. 336
Multi-information display ..................... 86 Audio system-linked ...........................86
Drive information .................................. 92
Dynamic radar cruise control......239
LDA (Lane Departure Alert with steering control) ...................236
Navigation system-linked .................86
Settings .......................................................95
Warning message .............................529
Navigation system
*
Needle ......................................................... 95
Noise from under vehicle ....................... 8 Odometer .................................................... 81
Oil
Engine oil .............................................. 588
Front differential oil .............................591
Rear differential oil ............................ 592
Opener Hood........................................................468
Trunk .......................................................... 122
Outer foot lights Location ...................................................418
Replacing light bulbs ...................... 509
Wattage .................................................595
Outside rear view mirrors ................... 151 Adjusting and folding ......................... 151
Blind spot monitor ............................ 276
Linked mirror function when reversing.................................. 152
Mirror position memory ..................139
Outside rear view mirror defoggers.............................. 412
Outside temperature .............................. 81
Overheating, Engine ...........................576
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