lug LEXUS RX450H 2019 Workshop Manual

7008-2. Steps to take in an emergency
RX450h_RX450hL_U
WARNING
■Avoiding 12-volt battery fires or explosions
Observe the following precautions to prevent accidentally igniting the flammable gas
that may be emitted from the 12-volt battery:
●Make sure each jumper cable is connected to the correct terminal and that it is not
unintentionally in contact with any other than the intended terminal.
●Do not allow the other end of the jumper cab le connected to the “+” terminal to come
into contact with any other parts or metal surfaces in the area, such as brackets or
unpainted metal.
●Do not allow the + and - clamps of the jump er cables to come into contact with each
other.
●Do not smoke, use matches, cigarette light ers or allow open flame near the 12-volt
battery.
■12-volt battery precautions
The 12-volt battery contains poisonous and co rrosive acidic electrolyte, while related
parts contain lead and lead compounds. Ob serve the following precautions when han-
dling the 12-volt battery:
●When working with the 12-volt battery, always wear safety glasses and take care not
to allow any battery fluids (acid) to come in to contact with skin, clothing or the vehicle
body.
●Do not lean over the 12-volt battery.
●In the event that battery fluid comes into contact with the skin or eyes, immediately
wash the affected area with water and seek medical attention.
Place a wet sponge or cloth over the affected area until medical attention can be
received.
●Always wash your hands after handling the 12-volt battery support, terminals, and
other battery-related parts.
●Do not allow children near the 12-volt battery.
■After recharging the 12-volt battery
Have the 12-volt battery inspected at yo ur Lexus dealer as soon as possible.
If the 12-volt battery is deteriorating, continued use may cause the 12-volt battery to
emit a malodorous gas, which may be de trimental to the health of passengers.
■When replacing the 12-volt battery
●When the vent plug and indicator are close to the hold down clamp, the battery fluid
(sulfuric acid) may leak.
●For information regarding 12-volt battery replacement, contact your Lexus dealer.
●Make sure to replace the 12-volt battery with one designed for this vehicle. Other-
wise, hydrogen gas may enter the vehicle, possibly causing a fire or explosion.
●After replacing, securely attach the exhaust hose and exhaust hole plug to the
exhaust hole of the replaced 12-volt battery. If not properly installed, gases (hydro-
gen) may leak into the vehicle interior, an d there is the possible danger of the gas
igniting and exploding.

710
RX450h_RX450hL_U9-1. Specifications
*1:Unladen vehicle
*2: Vehicles with towing package
*3:RX450h
*4:RX450hL
Maintenance data (fuel, oil level, etc.)
Dimensions and weight
Overall length192.5 in. (4890 mm)*3
196.9 in. (5000 mm)*4
Overall width74.6 in. (1895 mm)
Overall height*167.7 in. (1720 mm)
Wheelbase109.8 in. (2790 mm)
Tread
Front64.4 in. (1635 mm)*3
64.5 in. (1640 mm)*4
Rear64.0 in. (1625 mm)*3
64.1 in. (1630 mm)*4
Vehicle capacity weight
(Occupants + luggage)920 lb. (420 kg)*3
1070 lb. (490 kg)*4
Trailer Weight Rating*2
(Trailer weight
+ ca

rgo weight)3500 lb. (1585 kg)*3

7159-1. Specifications
9
Vehicle specifications
RX450h_RX450hL_U
*: The coolant capacity is a reference quantity. If replacement is necessary, contact your Lexus dealer.
Cooling system
Capacity*
Gasoline
engine
RX450h
10.7 qt. (10.1 L, 8.9 Imp. qt.)
RX450hL
13.2 qt. (12.5 L, 11 Imp. qt.)
Power control
unit2.0 qt. (1.9 L, 1.7 Imp. qt.)
Coolant type
Use either of the following: • “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-basednon-silicate, non-amine, non-nitrite, and non-
borate coolant with long-life hybrid organic
acid technology
Do not use plain water alone.
Ignition system (spark plug)
MakeDENSO FK20HBR8
Gap0.03 in. (0.8 mm)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.
Electrical system
12-volt battery
Open voltage at 68F (20C):
12.6 V or higher: Fully charged
12.2 — 12.4 V: Half charged
12.0 V or lower: Discharged
(Voltage is checked 20 minutes after the hybrid
system and all lights are turned off.)
Charging rates5 A max.

7199-1. Specifications
9
Vehicle specifications
RX450h_RX450hL_U
Light bulbs
Light bulbsBulb No.WType
Exterior
Front side marker lights*15B
Front turn signal lights*17444NA28/8A
Rear turn signal lights*121A
Back-up lights92116B
Interior
Door courtesy lights*25B
Vanity lights8B
Luggage compartment light5B
A: Wedge base bulbs (amber)B: Wedge base bulbs (clear)
*1: Vehicles with single-beam headlights
*2: Vehicles without door trim ornament lights

7319-1. Specifications
9
Vehicle specifications
RX450h_RX450hL_U
Production options weight
The combined weight of installed regular production
options weighing over 5 lb. (2.3 kg) in excess of the
standard items which they re place, not previously con-
sidered in curb weight or accessory weight, including
heavy duty brakes, ride levelers, roof rack, heavy duty
12-volt battery, and special trim
RimA metal support for a tire or a tire and tube assembly
upon which the tire beads are seated
Rim diameter
(Wheel diameter)Nominal diameter of the bead seat
Rim size designationRim diameter and width
Rim type designationThe industry manufacturer’s designation for a rim by
style or code
Rim widthNominal distance between rim flanges
Vehicle capacity weight
(Total load capacity)The rated cargo and luggage load plus 150 lb. (68 kg)
times the vehicle’s desi gnated seating capacity
Vehicle maximum load on
the tireThe load on an individual tire that is determined by dis-
tributing to each axle its share of the maximum loaded
vehicle weight, and dividing by two
Vehicle normal load on the
tire
The load on an individual tire that is determined by dis-
tributing to each axle its sh are of curb weight, accessory
weight, and normal occupant weight (distributed in
accordance with Table 1
* below), and dividing by two
Weather sideThe surface area of the rim not covered by the inflated
tire
BeadThe part of the tire that is made of steel wires, wrapped
or reinforced by ply cords an d that is shaped to fit the
rim
Tire related termMeaning

781Alphabetical index
RX450h_RX450hL_U
License plate lightsLight switch .......................................... 258
Replacing light bulbs ........................637
Light Automatic High Beam .................... 262
Cornering lights..................................259
Fog light switch ...................................266
Headlight switch................................ 258
Illuminated entry system .................. 531
Interior light list ................................... 528
Interior lights .........................................529
Luggage compartment light ......... 148
Personal lights .................................... 530
Replacing light bulbs ........................637
Turn signal lever ................................. 252
Vanity lights ..........................................547
Wattage ....................................................719
Welcome lighting ............................... 261
Light bulbs Replacing ...............................................637
Wattage ....................................................719
LKA (Lane-Keeping Assist)............. 297
Lock steering column ......................... 242
Luggage cover ........................................541 Maintenance
Do-it-yourself maintenance .........593
General maintenance .................... 589
Maintenance data................................710
Maintenance requirements .......... 587
Malfunction indicator lamp .............. 660
Meter Head-up display ................................... 118
Indicators .................................................. 90
Instrument panel light control..................................................... 98
Meters ........................................................ 96
Multi-information display.................. 101
Settings .................................................... 108
Warning lights.................................... 660
Warning messages .......................... 667
Mirrors Inside rear view mirror....................... 191
Outside rear view mirror defoggers.............................................516
Outside rear view mirrors ..............193
Vanity mirrors ..................................... 547M
*: Refer to the “NAVIGATION SYSTEM OWNER’S MANUAL”.

786Alphabetical index
RX450h_RX450hL_U
SensorAutomatic 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