towing LEXUS RX450h 2021 Service Manual

4608-1. Specifications
8-1.Specifications
*1:RX450h
*2:RX450hL
*3:Unladen vehicle
*4: Vehicles with towing package
*1:RX450h
*2:RX450hL
■Vehicle identification number
The vehicle identification number (VIN) is the legal identifier for your
vehicle. This is the primary identifica-
Maintenance data (fuel, oil level, etc.)
Dimensions and weight
Overall length192.5 in. (4890 mm)*1
196.9 in. (5000 mm)*2
Overall width74.6 in. (1895 mm)
Overall height*367.7 in. (1720 mm)
Wheelbase109.8 in. (2790 mm)
Tread
Front64.4 in. (1635 mm)*1
64.5 in. (1640 mm)*2
Rear64.0 in. (1625 mm)*1
64.1 in. (1630 mm)*2
Vehicle capacity weight
(Occupants + luggage)920 lb. (420 kg)*1
1070 lb. (490 kg)*2
Trailer Weight Rating*4
(Trailer weight + cargo weight)3500 lb. (1585 kg)*1
Seating capacity
Seating capacity5 (Front 2, Rear 3)*1
6 (Front 2, Rear 4)*2
Vehicle identification

4638-1. Specifications
8
Vehicle specifications
■Oil capacity (Drain and refillref-
erence
*)
*: The engine oil capacity is a reference quantity to be used when changing the
engine oil. Warm up the engine and turn
off the hybrid system, wait more than 5
minutes, and check the oil level on the
dipstick.
■Engine oil selection
“Toyota Genuine Motor Oil” is used in
your Lexus vehicle. Use Lexus
approved “Toyota Genuine Motor Oil”
or equivalent to satisfy the following
grade and viscosity.
Oil grade: ILSAC GF-5 multigrade
engine oil
Recommended viscosity: SAE 0W-20
SAE 0W-20 is the best choice for
good fuel economy and good starting
in cold weather.
If SAE 0W-20 is not available, SAE
5W-20 oil may be used. However, it
must be replaced with SAE 0W-20 at
the next oil change. Outside temperature
Oil viscosity (0W-20 is explained here
as an example):
• The 0W in 0W-20 indicates the characteristic of the oil which allows
cold startability. Oils with a lower
value before the W allow for easier
starting of the engine in cold
weather.
• The 20 in 0W-20 indicates the vis- cosity characteristic of the oil when
the oil is at high temperature. An oil
with a higher viscosity (one with a
higher value) may be better suited if
the vehicle is operated at high
speeds, or under extreme load con-
ditions.
How to read oil container label:
The International Lubricant Specifica-
tion Advisory Committee (ILSAC)
Certification Mark is added to some oil
containers to help you select the oil you
should use.
Lubrication system
With filter
Vehicles with towing pack-
age
5.8 qt. (5.5 L, 4.8 Imp. qt.)
Vehicles without towing
package
5.7 qt. (5.4 L, 4.8 Imp. qt.)
Without fil-
ter5.6 qt. (5.3 L, 4.7 Imp. qt.)
A

4648-1. Specifications
*: The coolant capacity is a reference quantity.If replacement is necessary, contact your Lexus dealer.
Cooling system
Capacity*
Gasoline
engine
RX450h (Vehicles with out towing package)
10.3 qt. (9.8 L, 8.6 Imp. qt.)
RX450h (Vehicles with towing package)
10.7 qt. (10.1 L, 8.9 Imp. qt.)
RX450hL
13.2 qt. (12.5 L, 11 Imp. qt.)
Power con-
trol 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-based non-silicate,
non-amine, non-nitrite, and non-borate coolant with
long-life hybrid orga nic 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.

515Alphabetical Index
DifferentialRear differential oil ....................................465
Dimension ...................................................... 460
Dinghy towing................................................ 183
Display Center Display........................................... 300
Dynamic radar cruise control with full-speed range ...................................... 238
Energy monitor.............................................. 99
Head-up display ........................................... 95
Intuitive parking assist.............................. 255
LTA (Lane Tracing Assist).................... 232
Multi-information display ..........................88
RCTA ................................................................ 261
Warning message..................................... 428
Distance until next engine oil change .... 87
Do-it-yourself maintenance .................... 363
Door courtesy lights .....................................321 Wattage..........................................................468
Door lock Power back door.......................................... 113
Side doors ...................................................... 109
Smart access system with push-button start ..................................................................125
Wireless remote control..........................107
Door pockets ................................................ 328
Doors Automatic door lock ing and unlocking
system ..............................................................112
Door glasses ..................................................153
Door lock warning buzzer ...................... 110
Open door warning buzzer ....................112
Outside rear view mirrors ..................... 150
Rear door child-protectors ......................112
Side doors ...................................................... 109
Drive distance .................................................. 90
Driver’s seat position memory Driving position memory......................... 142
Memory recall function ............................143
Power easy access system ..................... 142
Drive-start control ........................................165 Driving
Break-in tips .................................................. 165
Correct driving posture ............................ 25
Driving mode select switch ................... 281
Hybrid vehicle driving tips ................... 289
Procedures .................................................... 164
Winter drive tips ...........................................291
Driving assist system information ............ 92
Driving information display ........................ 90
Driving position memory............................ 142 Memory recall function.............................143
Power easy access system .....................142
Driving range ................................................... 90
Dynamic radar cruise control with full-speed range ........................................ 238Warning message ..................................... 246
E
ECB (Electronically Controlled Brake Sys-
tem) ................................................................ 283
EDR (Event data recorder) ........................... 8
E-Four .............................................................. 284
Elapsed time ..................................................... 90
Electric motor (traction motor) ................ 66
Electric Power Steering (EPS) .............. 284 Warning light .................................................421
Electronic key ................................................ 106 Battery-saving function.............................126
If the electronic key does not operate properly ....................................................... 447
Replacing the battery ...............................393
Electronic sunshade Jam protection function ........................... 159
Operation ....................................................... 158
Electronically Controlled Brake System (ECB) ............................................................ 283
Emergency flashers ..................................... 410
Emergency, in case of If a warning buzzer sounds.................... 418
If a warning light turns on........................ 418
If a warning message is displayed .....428
If the 12-volt battery is discharged ....449

524Alphabetical Index
Tire pressure warning systemFunction .......................................................... 382
Initializing ...................................................... 385
Installing tire pressure warning valves and transmitters ......................................384
Registering ID codes ............................... 387
Warning light ............................................... 422
Tires Chains ............................................................. 292
Checking ...................................................... 380
If you have a flat tire .................................. 432
Inflation pressure........................................ 387
Information ...................................................... 471
Replacing ....................................................... 432
Rotating tires ................................................ 382
Size.................................................................... 466
Snow tires ........................................................ 291
Spare tire........................................................ 432
Tire inflation pressu re display function
......................................................................... 382
Tire pressure warning system ............. 382
Warning light ............................................... 422
Tools.................................................................. 433
Top tether strap................................................57
Total load capacity ...................................... 460
Towing Dinghy towing .............................................. 183
Emergency towing ..................................... 413
Towing eyelet ................................................415
Trailer towing ................................................. 173
TRAC (Traction Control) ........................ 284
Traction battery (hybrid battery) Hybrid battery (traction battery) air vents.............................................................................. 71
Location............................................................. 69
Specification ................................................. 462
Warning message.........................................72
Traction Control (TRAC) ........................ 284
Traction motor (electric motor) ............... 66
Trailer Sway Control.................................. 284
Trailer towing .................................................. 173 Transmission
Driving mode select switch ................... 281
Hybrid transmission..................................... 191
M mode ........................................................... 193
Paddle shift switches ....................... 192, 193
Trip meters ........................................................ 87
Turn signal lights Replacing light bulbs ............................... 400
Turn signal lever .......................................... 194
Wattage ......................................................... 468
U
USB charging ports.................................... 334
V
Vanity lights.................................................... 345Wattage ......................................................... 468
Vanity mirrors ............................................... 345
VDIM (Vehicle Dynamics Integrated Man- agement)...................................................... 284
Vehicle data recording ....................................7
Vehicle Dynamics Integrated Manage- ment (VDIM).............................................. 284
Vehicle identification number ................ 460
Vehicle Stability Control (VSC) ........... 283
Ventilators (seat ventilators).................... 318
VSC (Vehicle Stability Control) ........... 283
W
Warning buzzers Approach warning.................................... 244
Brake Override System .........................420
Door lock .......................................................... 110
Downshifting ................................................. 193
Drive-Start Control...................................420
Electric power steering.............................421
Hands off steering wheel warning (LTA).......................................................................... 234
High coolant temperature...................... 418
Hybrid system overheat .......................... 419