transmission LEXUS RX450h 2018 User Guide

590 7-2. Maintenance
RX450h_RX450hL _U_OM48F85U* : Vehicles with sing le-beam headlightsVehicle interior Items Check points
Accelerator pedal • The accelerator pedal sh ould move smoothly (with-
out uneven pedal effort or catching).
Brake pedal • Does the brake pedal move smoothly?
• Does the brake pedal have appropriate clearance
from the floor? ( → P. 716)
• Does the brake pedal have the correct amount of
free play? ( → P. 716)
Brakes • The vehicle should not pull to one side when the
brakes are applied.
• The brakes should work effectively.
• The brake pedal should not feel spongy.
• The brake pedal should no t get too close to the floor
when the brakes are applied.
Head restraints • Do the head restraints move smoothly and lock
securely?
Hybrid transmission “Park”
mechanism • When parked on a slope and the shift lever is in P, is
the vehicle securely stopped?
Indicators/buzzers • Do the indicators and buzzers function properly?
Lights • Do all the lights come on?
• Are the headlights aimed correctly?
* ( → P. 635)
Parking brake • Does the parking brake switch operate normally?
• When parked on a slope and the parking brake is on,
is the vehicle securely stopped?
Seat belts • Do the seat belts operate smoothly?
• The seat belts should not be damaged.
Seats • Do the seat controls operate properly?
Steering wheel • Does the steering wheel rotate smoothly?
• Does the steering wheel have the correct amount of
free play?
• There should not be any strange sounds coming
from the steering wheel.

654
RX450h_RX450hL _U_OM48F85U8-2. Steps to take in an emergency
The following may indicate a problem wi th your hybrid transmission. Contact
your Lexus dealer or commercial towing service before towing. ●
The hybrid warning message shows on and the vehicle does not move. ●
The vehicle makes an abnormal sound.
Do not tow with a sling-type truck to
prevent body damage.If your vehicle needs to be towed If towing is necessary, we recommend having your vehicle towed by your
Lexus dealer or commercial towing se rvice, using a wheel-lift type truck or
flatbed truck.
Use a safety chain system for all towing, and abide by all state/provincial and
local laws.
If towing your vehicle with a wheel-lift type truck, use a towing dolly.
( → P. 655, 657)
Situations when it is necessary to contact dealers before towing
Towing with a sling-type truck

658 8-2. Steps to take in an emergency
RX450h_RX450hL _U_OM48F85UNOTICE ■
To prevent damage to the vehicle when towing using a wheel-lift type truck●
Do not tow the vehicle from the rear when the power switch is off. The steering lock
mechanism is not strong enough to hold the front wheels straight. ●
When raising the vehicle, en sure adequate ground cleara nce for towing at the oppo-
site end of the raised vehicle. Without ad equate clearance, the vehicle could be dam-
aged while being towed. ■
To prevent damage to the vehicle wh en towing with a sling-type truck
Do not tow with a sling-type truck, either from the front or rear. ■
To prevent damage to the ve hicle during emergency towing
Do not secure cables or chains to the suspension components. ■
Recreational towing (behind motor home, etc)
Never dinghy tow your vehicle to prevent caus-
ing serious damage to the Hybrid AWD system
and transmission. ( → P. 238)

7078-2. Steps to take in an emergency
8
When trouble arises
RX450h_RX450hL _U_OM48F85UWARNING ■
When attempting to free a stuck vehicle
If you choose to push the vehicle back and forth to free it, make sure the surrounding
area is clear to avoid striking other vehicl es, objects or people. The vehicle may also
lunge forward or lunge back suddenly as it becomes free. Use extreme caution. ■
When shifting the shift lever
Be careful not to shift the shift lever with the accelerator pedal depressed.
This may lead to unexpected rapid acceleration of the vehicle that may cause an acci-
dent resulting in deat h or serious injury.
NOTICE ■
To avoid damage to the hybrid transmission and other components●
Avoid spinning the front wheels and depre ssing the accelerator pedal more than nec-
essary. ●
If the vehicle remains stuck even after th ese procedures are performed, the vehicle
may require towing to be freed.

716 9-1. Specifications
RX450h_RX450hL _U_OM48F85U* : The fluid capacity is a reference quantity.
If replacement is necessary, contact your Lexus dealer.
* : The fluid capacity is a reference quantity.
If replacement is necessary, contact your Lexus dealer.
* : Minimum pedal clearance when depressed wi th a force of 110 lbf (490 N, 50.0 kgf)
while the hybrid system is operating.Hybrid transmission Fluid capacity
* 5.1 qt. (4.8 L, 4.2 Imp. qt.)
Fluid type Toyota Genuine ATF WS
NOTICE ■
Hybrid transmission fluid type
Using transmission fluid ot her than “Toyota Genuine ATF WS” may ultimately damage
the hybrid transmission of your vehicle.
Rear differential (Rear electric motor) Fluid capacity
* 1.9 qt. (1.8 L, 1.6 Imp. qt.)
Fluid type Toyota Genuine ATF WS
NOTICE ■
Hybrid transmission fluid type
Using transmission fluid ot her than “Toyota Genuine ATF WS” may ultimately damage
the hybrid transmission of your vehicle.
Brakes Pedal clearance
* 3.7 in. (95 mm) Min.
Brake pad wear limit 0.04 in. (1.0 mm)
Pedal free play 0.04 — 0.24 in. (1.0 — 6.0 mm)
Fluid type FMVSS No. 116 DOT 3 or SAE J1703

730 9-1. Specifications
RX450h_RX450hL _U_OM48F85UGlossary of tire terminology Tire related term Meaning
Cold tire inflation pressure Tire pressure when the vehicle has been parked for
three hours or more, or has no t been driven more than 1
mile or 1.5 km un der that condition
Maximum inflation pres-
sure The maximum cold inflated pr essure to which a tire may
be inflated, shown on the sidewall of the tire
Recommended inflation
pressure Cold tire inflation pressure recommended by a manu-
facturer
Accessory weight The combined weight (in exce ss of those standard items
which may be replaced) of hybrid transmission, power
steering, power brakes, power windows, power seats,
radio and heater, to the extent that these items are avail-
able as factory-installed eq uipment (whether installed
or not)
Curb weight The weight of a motor vehicle with standard equipment,
including the maximum capacity of fuel, oil and coolant,
and if so equipped, air co nditioning and additional
weight optional engine
Maximum loaded vehicle
weight The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant weight 150 lb. (68 kg) times the numb er of occupants specified
in the second column of Table 1
* that follows
Occupant distribution Distribution of occupants in a vehicle as specified in the
third column of Table 1
* below

777Alphabetical index
RX450h_RX450hL _U_OM48F85UFlat tire ...................................................... 673
Floor mats ................................................... 28
Fluid
Brake ..........................................................716
Transmission...........................................716
Washer .................................................. 604
Fog lights
Replacing light bulbs ........................637
Switch.......................................................266
Front automatic air
conditioning system ......................... 507
Front passenger footwell
hooks ...................................................... 557
Front passenger occupant
classification system .............................47
Front passenger’s seat belt
reminder light ..................................... 662
Front seat heaters................................. 526
Front seats ................................................. 167
Adjustment ..............................................167
Cleaning ................................................ 584
Correct driving posture ....................30
Driving position memory .................. 181
Head restraints ..................................... 186
Power easy access system .............. 181
Seat heaters ..........................................526
Seat position memory......................... 181
Front side marker lights
Light switch .......................................... 258
Replacing light bulbs ........................637
Wattage ....................................................719 Front turn signal lights
Replacing light bulbs ....................... 637
Turn signal lever ................................. 252
Wattage ................................................... 719
Fuel
Capacity................................................... 712
Fuel gauge ............................................... 96
Information............................................ 720
Refueling .................................................274
Type............................................................ 712
Fuel filler door......................................... 274
Refueling .................................................274
When the fuel filler door
cannot be opened ..........................277
Fuses...........................................................632
Garage door opener.......................... 560
Gauges.........................................................96
Glove box ............................................... 534
Grocery bag hooks............................... 541F
G

778 Alphabetical index
RX450h_RX450hL _U_OM48F85UHands-free system
(for cellular phone) .............................461
Head restraints ....................................... 186
Head-up display....................................... 118
Headlight cleaner................................. 267
Headlights ............................................... 258
Automatic headlight leveling ...... 260
Automatic High Beam .................... 262
Light switch .......................................... 258
Replacing light bulbs ........................637
Wattage ....................................................719
Windshield wiper linked
headlight illumination..................... 261
Heated steering wheel ....................... 526
Heaters
Automatic air conditioning
system ..................................... 507, 522
Heated steering wheel ....................526
Outside rear view mirrors .............. 516
Seat heaters ..............................526, 527
High mounted stoplight
Replacing ...............................................637
Hill-start assist control ........................ 382
Hood .......................................................... 595
Open ....................................................... 595
Hooks
Cargo hooks ....................................... 540
Cargo net hooks ............................... 540
Front passenger footwell
hooks ....................................................557
Grocery bag hooks........................... 541
Retaining hooks (floor mat) ............. 28 Horn.............................................................189
HUD (Head-up display)....................... 118
Humidity sensor...................................... 521
Hybrid battery air vent ........................... 79
Hybrid battery (traction battery)
Location .................................................... 78
Specification ........................................... 713
Hybrid system............................................ 74
Emergency shut off system ..............79
Energy monitor/
consumption screen....................... 124
EV drive mode ................................... 244
High voltage components ............... 78
Hybrid System Indicator ................... 99
Hybrid system precautions ............. 78
Hybrid vehicle driving tips ........... 388
If the hybrid system will not
start....................................................... 690
Overheating......................................... 702
Power (ignition) switch................... 239
Regenerative braking ..........................76
Starting the hybrid system............. 239
Vehicle proximity notification
system ..................................................... 75
Hybrid System Indicator .......................99
Hybrid transmission .............................246
If the shift lever cannot be
shifted from P ...................................250
Paddle shift switches............ 247, 248
S mode.................................................... 248H

786 Alphabetical index
RX450h_RX450hL _U_OM48F85USensor
Automatic headlight system ........ 260
Camera sensor .................................... 281
Humidity sensor .................................. 521
Inside rear view mirror ..................... 192
Intuitive parking assist ...................... 332
Radar sensor ......................................... 281
Rain-sensing windshield
wipers .................................................. 268
Touchless sensor ................................ 144
Service reminder indicators ............... 90
Shift lever
Hybrid transmission ....................... 246
If the shift lever cannot be
shifted from P ................................ 250
Shift lock system .............................. 250
Side airbags ............................................... 37
Side doors..................................................136
Side marker lights
Light switch .......................................... 258
Replacing light bulbs ........................637
Side mirrors ..............................................193
Adjusting and folding........................ 193
Blind Spot Monitor (BSM)............. 319
Heaters..................................................... 516
Side turn signal lights
Replacing light bulbs ........................637
Turn signal lever ................................. 252 Smart access system
with push-button start .......................158
Antenna location................................. 158
Entry functions ............................136, 142
Starting the hybrid system............. 239
Snow tires ................................................ 392
Spare tire
Inflation pressure.................................. 717
Storage location ................................. 674
Spark plug ................................................. 715
Specifications........................................... 710
Speedometer .............................................96
Sport mode ..............................................379
Steering wheel ........................................189
Adjustment............................................. 189
Audio switches ...................................406
Heated steering wheel ................... 526
Power easy access system .............. 181
Telephone switches............................ 471
Stop lights
Replacing light bulbs ....................... 637
Storage feature ..................................... 532
Storage precautions ........................... 532
Stuck
If the vehicle becomes stuck........ 706
Sun visors..................................................547
Sunshade
Panoramic moon roof..................... 204
Rear door .............................................. 557
Roof ............................................................201

789Alphabetical index
RX450h_RX450hL _U_OM48F85UTRAC (Traction Control) ................. 382
Traction Control (TRAC) ................. 382
Trailer Sway Control........................... 382
Trailer towing .............................. 224, 237
Transmission
Driving mode select switch ..........379
Hybrid transmission..........................246
If the shift lever cannot be
shifted from P .................................. 250
Paddle shift switches ............ 247, 248
S mode ....................................................248
Trip meters ................................................. 115
Turn signal lights
Replacing light bulbs ........................637
Turn signal lever ................................. 252
Wattage ....................................................719
USB memory.......................................... 444
USB port .................................................. 409 Vanity lights .............................................547
Wattage ................................................... 719
Vanity mirrors.........................................547
Vanity lights .......................................... 547
VDIM (Vehicle Dynamics
Integrated Management).............. 383
Vehicle data recordings......................... 10
Vehicle Dynamics Integrated
Management (VDIM)..................... 383
Vehicle identification number ............711
Vehicle proximity notification
system ........................................................ 75
Vehicle Stability Control (VSC) .... 382
Voice command system.................... 493
VSC (Vehicle Stability Control) .... 382
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