2019 LEXUS RX350 differential

2094-1. Before driving
4
Driving
RX350/RX350L_U NOTICE ■
When driving the vehicle ●
Do not depress the accelerator and brake pedals at the same time during driving, as
this may restrain driving torque. ●
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 shift lever to P. Failure to do so may cause the
vehicle to move or the vehicle may accelerate suddenly if the accelerator pedal is acci-
dentally 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 on the road, drive as slowly as possible to avoid damaging
the wheels, underside of the vehicle, etc. ■
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. 666)■
When encountering flooded roads
Do not drive on a road that has flooded after 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, transaxle, transfer
(AWD models), rear differential (AWD models), etc. ●
Lubricant condition for the propeller shaf t (AWD models), bearings and suspension
joints (where possible), and the func tion of all joints, bearings, etc.

226 4-1. Before driving
RX350/RX350L_U ■
Break-in schedule
If your vehicle is new or equipped with any new power train components (such as an
engine, transaxle, transfer (AWD models), rear differential (AWD models) or wheel
bearing), Lexus recommends that you do not tow a trailer until the vehicle has been
driven for over 500 miles (800 km).
After the vehicle has been driven for over 500 miles (800 km), you can start towing.
However, for the next 500 miles (800 km), drive the vehicle at a speed of less than
50 mph (80 km/h) when towing a trailer, and avoid full throttle acceleration.■
Maintenance ●
If you tow a trailer, your vehicle will requir e more frequent maintenance due to the addi-
tional load. (See “Warranty and Services Guide”, “Owner’s Manual Supplement” or
“Scheduled Maintenance”.) ●
Retighten the fixing bolts of the towing ba ll and bracket after approximately 600 miles
(1000 km) of trailer towing. ■
If trailer sway occurs
One or more factors (crosswinds, passing ve hicles, rough roads, etc.) can adversely
affect handling of your vehicle and trailer, causing instability. ●
If trailer swaying occurs:
• Firmly grip the steering wh eel. Steer straight ahead.
Do not try to control trailer sway ing by turning the steering wheel.
• Begin releasing the accelerator pedal im mediately but very gradually to reduce
speed.
Do not increase speed. Do not apply vehicle brakes.
If you make no extreme correction with the st eering or brakes, your vehicle and trailer
should stabilize. (if enabled, Trailer Sway Control can also he lp to stabilize the vehicle and
trailer.) ●
After the trailer sw aying has stopped:
• Stop in a safe place. Get all occupants out of the vehicle.
• Check the tires of the vehicle and the trailer.
• Check the load in the trailer.
Make sure the load has not shifted.
Make sure the tongue weight is appropriate, if possible.
• Check the load in the vehicle.
Make sure the vehicle is not ov erloaded after occupants get in.
If you cannot find any problems, the speed at which trailer swaying occurred is beyond
the limit of your particular vehicle-trailer combination.
Drive at a lower speed to prevent instability. Remember that swaying of the towing vehi-
cle-trailer increases as speed increases.

390 4-6. Driving tips
RX350/RX350L_U WARNING ■
Off-road driving precautions
Always observe the following precautions to minimize the risk of death, serious injury
or damage to your vehicle: ●
Drive carefully when off the road. Do not ta ke unnecessary risks by driving in danger-
ous places. ●
Do not grip the steering wheel spokes when driving off-road. A bad bump could jerk
the wheel and injure your hands. Keep both hands and especially your thumbs on the
outside of the rim. ●
Always check your brakes for effectiveness immediately after driving in sand, mud,
water or snow. ●
After driving through tall grass, mud, rock , sand, rivers, etc., check that there is no
grass, bush, paper, rags, stone, sand, etc. adhering or trapped on the underbody.
Clear off any such matter from the underbody. If the vehicle is used with these materi-
als trapped or adhering to the underbody, a breakdown or fire could occur. ●
When driving off-road or in rugged terrain , do not drive at excessive speeds, jump,
make sharp turns, strike obje cts, etc. This may cause loss of control or vehicle rollover
causing death or serious injury. You are also risking expensive damage to your vehi-
cle’s suspension and chassis.
NOTICE ■
To prevent water damage
Take all necessary safety measures to ensure that water damage to the engine or other
components does not occur. ●
Water entering the engine air intake will cause severe engine damage.●
Water entering the automatic transmission will cause deterioration in shift quality,
locking up of your transmission accompan ied by vibration, and ultimately damage.●
Water can wash the grease from wheel be arings, causing rusting and premature fail-
ure, and may also enter the differential, transmission and transfer (AWD models only)
case, reducing the gear oi l’s lubricating qualities.■
When you drive through water
If driving through water, such as when cro ssing shallow streams, first check the depth of
the water and the bottom of the riverbed for firmness. Drive slowly and avoid deep
water. ■
Inspection after off-road driving ●
Sand and mud that has accumulated around brake discs may affect braking efficiency
and may damage brake system components. ●
Always perform a maintenance inspection afte r each day of off-road driving that has
taken you through rough terrain, sand, mud, or water. For scheduled maintenance
information, refer to the “Warranty and Services Guide/Owner’s Manual Supple-
ment/Scheduled Maintenance”.

7039-1. Specifications
9
Vehicle specifications
RX350/RX350L_U * : The fluid capacity is a reference quantity.
If replacement is necessary, contact your Lexus dealer.
Your Lexus vehicle is filled with “Toyot a Genuine Differential Gear Oil” at the
factory.
Use Lexus approved “Toyota Ge nuine Differential Gear O il” or an equivalent of
matching quality to satisfy the above specification. Please contact your Lexus
dealer for further details.
Your Lexus vehicle is filled with “Toyot a Genuine Differential Gear Oil” at the
factory.
Use Lexus approved “Toyota Ge nuine Differential Gear O il” or an equivalent of
matching quality to satisfy the above specification. Please contact your Lexus
dealer for further details.Automatic transmission Fluid capacity
* 7.2 qt. (6.8 L, 6.0 Imp. qt.)
Fluid type Toyota Genuine ATF WS
NOTICE ■
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.
Transfer (AWD models) Oil capacity 0.8 qt. (0.8 L, 0.7 Imp. qt.)
Oil type and viscosity Toyota Genuine Differential gear oil LT
75W-85 GL-5 or equivalent
Rear differential (AWD models) Oil capacity 0.5 qt. (0.5 L, 0.4 Imp. qt.)
Oil type and viscosity Toyota Genuine Differential gear oil LT
75W-85 GL-5 or equivalent

761Alphabetical index
RX350/RX350L_U Daytime running light system .......... 254
Defogger
Outside rear view mirrors .............. 513
Rear window ......................................... 513
Windshield ............................................. 513
Differential ............................................... 703
Dimensions ............................................. 698
Dinghy towing........................................ 230
Display
Dynamic radar cruise control
with full-speed range ................... 300
LKA (Lane-Keeping Assist) .........296
Multi-information display ..................90
Warning messages............................ 661
Do-it-yourself maintenance .............590
Doors
Automatic door locking and
unlocking system .............................. 127
Door lock ................................................ 126
Outside rear view mirrors .............. 184
Power back door ................................ 130
Rear door child-p rotectors ............ 127
Side doors ...............................................124
Side windows ........................................ 187 Drive information .....................................94
Drive-start control ........ 203, 238, 243
Driver’s seat belt reminder light .... 656
Driver’s seat position memory.......... 172
Driving
Break-in tips ......................................... 204
Correct posture .................................... 30
Driving mode select switch .......... 373
Procedures ........................................... 202
Winter drive tips ................................384
Driving position memory .................... 172
Memory recall function .................... 175
Power easy access system ............. 172
Dynamic radar cruise control
with full-speed range....................... 300
Dynamic Torque Control AWD
system .....................................................379D

768 Alphabetical index
RX350/RX350L_U Odometer ................................................ 104
Oil
Engine oil............................................... 700
Rear differential oil .............................703
Transfer oil .............................................703
Opener
Fuel filler door ........................................ 271
Hood ........................................................592
Power back door .................................. 131
Outside rear view mirrors ................. 184
Adjusting and folding........................ 184
Blind Spot Monitor (BSM)............. 313
Linked mirror function when
reversing .............................................. 185
Mirror position memory ................... 172
Outside rear view mirror
defoggers ............................................ 513
Outside temperature display ............. 86
Overheating ........................................... 692
Paddle shift switches ................. 241, 242
Panic mode ................................................ 121
Panoramic moon roof ......................... 195
Jam protection function ................... 196
Operation ............................................... 195 Parking brake ......................................... 247
Parking brake engaged
warning buzzer/message ......... 249
Warning light .......................................655
Parking lights
Light switch........................................... 252
Replacing light bulbs .......................630
PCS (Pre-Collision System).............. 281
Warning light .......................................656
Personal lights ....................................... 526
Power back door ...................................130
Touchless power back door.......... 132
Wireless remote control................. 130
Power back door opener and
closer .......................................................130
Power easy access system ................. 172
Power outlets ........................................... 551
Power steering (Electric Power
Steering system)................................ 378
Warning light .......................................655
Power windows
Door lock linked window
operation ............................................. 189
Jam protection function................... 188
Operation................................................187
Window lock switch ..........................187
Pre-Collision System (PCS).............. 281
Warning light .......................................656O
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