2022 LEXUS RX450h battery capacity

4447-2. Steps to take in an emergency
ponents when the vehicle is running at a
low speed for an extended period, such
as in heavy traffic.
■When removing the 12-volt battery ter-
minals
When the 12-volt battery terminals are
removed, the information stored in the
ECU is cleared. Before removing the
12-volt battery terminals, contact your
Lexus dealer.
■Charging the 12-volt battery
The electricity stored in the 12-volt battery
will discharge gradually even when the
vehicle is not in use, due to natural dis-
charge and the draining effects of certain
electrical appliances. If the vehicle is left for
a long time, the 12-volt battery may dis-
charge, and the hybrid system may be
unable to start. (T he 12-volt battery
recharges automatically while the hybrid
system is operating.)
■When the 12-volt battery is removed or
discharged
●In some cases, it may not be possible to
unlock the doors using the smart access
system with push-button start when the
12-volt battery is discharged. Use the
wireless remote control or the mechani-
cal key to lock or unlock the doors.
●The hybrid system may not start on the
first attempt after the 12-volt battery has
recharged but will start normally after the
second attempt. This is not a malfunction.
●The power switch mode is memorized by
the vehicle. When the 12-volt battery is
reconnected, the system will return to the
mode it was in before the 12-volt battery
was discharged. Before disconnecting
the 12-volt battery, turn the power switch
off.
If you are unsure what mode the power
switch was in before the 12-volt battery
discharged, be especially careful when
reconnecting the 12-volt battery.
●The power back door mu st be initialized.
( P.119)
■When replacing the 12-volt battery
●RX450h: Use a Central Degassing type
12-volt battery (European Regulations). RX450hL: Use a 12-volt battery
designed for this vehicle.
●RX450h: Use a 12-volt battery that the
case size is same as the previous one
(LN2), 20 hour rate capacity (20HR) is
equivalent (60Ah) or greater, and per-
formance rating (CCA) is equivalent
(460A) or greater.
• If the sizes differ, the 12-volt battery can- not be properly secured.
• If the 20 hour rate capacity is low, even if
the time period where the vehicle is not
used is a short time, the 12-volt battery
may discharge and the hybrid system
may not be able to start.
●Use a 12-volt battery with a handle. If a
12-volt battery without a handle is used,
removal is more difficult.
●After replacing, firm ly attach the follow-
ing items to the exhaust hole of the
12-volt battery.
• Use the exhaust hose that was attached to the 12-volt battery before replacing
and confirm that it is firmly connected to
the hole section of the vehicle.
• Use the exhaust hole plug included with the 12-volt battery re placed or the one
installed on the 12-volt battery prior to
the replacement. (Depending on the
12-volt battery to be replaced, the
exhaust hole may be plugged.)
RX450h
Exhaust hole plug
Exhaust hole
A
B

4548-1. Specifications
Front
Rear
Fuel
Fuel typeUnleaded gasoline only
Octane Rating91 (Research Octane Number 96) or higher
Fuel tank capacity
(Reference)17.2 gal. (65 L, 14.3 Imp. gal.)
Electric motor (traction motor)
TypePermanent magnet synchronous motor
Maximum output123 kW
Maximum torque247 ft•lbf (335 N•m, 34.2 kgf•m)
TypePermanent magnet synchronous motor
Maximum output50 kW
Maximum torque103 ft•lbf (139 N•m, 14.2 kgf•m)
Hybrid battery (traction battery)
TypeNickel-Metal hydride battery
Voltage9.6 V/module
Capacity6.5 Ah (3HR)
Quantity30 modules
Nominal voltage288 V

4578-1. Specifications
8
Vehicle specifications
*: 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.
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.
Hybrid transmission
Fluid capacity*5.1 qt. (4.8 L, 4.2 Imp. qt.)
Fluid typeToyota Genuine ATF WS
NOTICE
■Hybrid transmission fluid type
Using transmission fluid other than the abov e type may cause abnormal noise or vibra-
tion, or ultimately damage the transmission of your vehicle.
Rear differential (rear electric motor)
Fluid capacity*1.9 qt. (1.8 L, 1.6 Imp. qt.)
Fluid typeToyota Genuine ATF WS
NOTICE
■Hybrid transmission fluid type
Using transmission fluid other than the above type may cause abnormalnoise or vibration,
or ultimately damage the transmission of your vehicle.
Brakes
Pedal clearance*3.7 in. (95 mm) Min.
Pedal free play0.04  0.24 in. (1.0  6.0 mm)

4678-1. Specifications
8
Vehicle specifications
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pressure
Tire pressure when the vehicle has been parked for
three hours or more, or has not been driven more
than 1 mile or 1.5 km under that condition
Maximum inflation pressureThe maximum cold inflated pressure to which a tire
may be inflated, shown on the sidewall of the tire
Recommended inflation pressureCold tire inflation pressure recommended by a
manufacturer
Accessory weight
The combined weight (in excess of those standard
items which may be replaced) of hybrid transmis-
sion, power steering, power brakes, power win-
dows, power seats, radio and heater, to the extent
that these items are available as factory-installed
equipment (whether installed or not)
Curb weight
The weight of a motor vehicle with standard equip-
ment, including the maximum capacity of fuel, oil
and coolant, and if so equipped, air conditioning
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 number of occupants
specified in the second column of Table 1
* that fol-
lows
Occupant distributionDistribution of occupants in a vehicle as specified in
the third column of Table 1
* below
Production options weight
The combined weight of installed regular produc-
tion options weighing over 5 lb. (2.3 kg) in excess of
the standard items which they replace, not previ-
ously considered in curb weight or accessory
weight, including heavy duty brakes, ride levelers,
roof rack, heavy duty 12-v olt battery, and special
trim

506Alphabetical Index
Fluid ......................................................369, 457
Parking brake ................................................193
Regenerative braking ................................. 67
Warning light ................................................ 410
Brake assist .................................................... 278
Break-in tips.....................................................163
Brightness control Instrument panel light control ................ 87
BSM (Blind Spot Monitor)....................... 246
Buzzer Hands off steering wheel warning (LTA)......................................................................... 232
C
Care Exterior .......................................................... 350
Interior ............................................................. 353
Seat belts........................................................ 353
Wheels and wheel ornaments........... 350
Cargo capacity..................................... 167, 170
Cargo hooks ................................................. 324
Cargo net hooks .......................................... 324
Center Display ............................................. 294
Chains .............................................................. 287
Child restraint system Fixed with a LATCH system .................. 54
Fixed with a seat belt...................................50
Front passenger occupant classification system ............................................................. 39
Points to remember .................................... 45
Riding with children ..................................... 45
Types of child restraint system installation method ........................................................... 46
Using an anchor bracket .......................... 57
Child safety 12-volt battery precautions ....... 372, 445
Airbag precautions...................................... 36
Child restraint system................................. 46
Heated steering wheel and seat heater precautions.................................................. 312
How your child should wear the seat belt .............................................................................27 Moon roof precautions............................ 155
Panoramic moon roof precautions ... 158
Power back door precautions ............... 113
Power window lock switch .................... 153
Power window precautions .................. 152
Rear door child-protectors ..................... 112
Seat belt extender prec
autions.............. 27
Seat belt precautions .................................. 45
Child-protectors............................................. 112
Cleaning Exterior........................................................... 350
Interior .............................................................353
Radar sensor .................................................. 212
Seat belts ........................................................353
Wheels and wheel ornaments ........... 350
Clock ....................................................... 83, 338
Coat hooks..................................................... 338
Coin box.......................................................... 322
Compass ......................................................... 346
Condenser ..................................................... 368
Console box .................................................. 320
Cooling system............................................. 367 Engine overheating...................................446
Hybrid system overheating ................. 448
Cornering lights ...........................................200 Replacing light bulbs................................393
Cruise control Dynamic radar cruise control with full-speed range ......................................236
Cup holders .....................................................321
Current fuel consumption .......................... 90
Curtain shield airbags .................................. 30
Customizable features ...............................472
D
Daytime running light system .................. 198
Defogger Outside rear view mirrors.................... 300
Rear window ............................................... 300
Windshield ................................................... 300
Differential Rear differential oil.....................................457

509Alphabetical Index
Front side marker lightsReplacing light bulbs................................ 393
Wattage..........................................................460
Front turn signal lights Replacing light bulbs................... 393, 395
Turn signal lever ........................................... 192
Wattage..........................................................460
Fuel Capacity ......................................................... 454
Fuel gauge ....................................................... 83
Information ......................................................461
Refueling ........................................................209
Type.................................................................. 454
Warning light .................................................413
Fuel consumption Average fuel economy .............................. 90
Current fuel consumption........................ 90
Fuel filler door If the fuel filler door cannot be opened.........................................................................438
Refueling ........................................................209
Fuel gauge ......................................................... 83
Fuses .................................................................388
G
Garage door opener ...................................341
Gauges ............................................................... 83
G-force................................................................. 91
Glove box ....................................................... 320
Glove box light ............................................. 320
Grocery bag hooks .................................... 324
H
Hands Free Power Back Door ................. 116
Head restraints ...............................................143
Headlight aim ................................................ 390
Headlights Adaptive Front-lighting System (AFS).........................................................................200
Automatic High Beam system..............201
Light switch .................................................... 198 Replacing light bulbs................................393
Head-up display.............................................. 95 Driving information display area ...........95
HUD (Head-up display) switch ............ 96
Hybrid System Indicator ........................... 99
Navigation system-linked display ........98
Settings............................................................... 97
Heated steering wheel ................................312
Heaters Front automatic air conditioning system......................................................................... 298
Heated steering wheel ..............................312
Outside rear view mirrors.................... 300
Rear automatic air conditioning system
......................................................................... 309
Seat heaters ....................................................312
High mounted stoplight Replacing light bulbs................................393
High-voltage components ......................... 69
Hill-start assist control ............................... 279
Hood Open................................................................363
Hooks Cargo hooks................................................ 324
Cargo net hooks........................................ 324
Coat hooks .................................................. 338
Front passenger footwell hooks........ 340
Grocery bag hooks.................................. 324
Retaining hooks (floor mat) ..................... 24
Horn ....................................................................146
HUD (Head-up display) switch ................ 96
Hybrid battery (traction battery) Location ............................................................. 69
Specification .................................................454
Warning message ........................................ 72
Hybrid battery (traction battery) air vents ............................................................................... 71
Hybrid system .................................................. 66 Acoustic Vehicle Aler ting System .......68
Emergency shut off system...................... 72
Energy monitor/co nsumption screen99
EV drive mode............................................. 187

513Alphabetical Index
Checking ....................................................... 367
Preparing and checking before winter.........................................................................286
Power easy access system ....................... 140
Power outlets ................................................ 338
Power steering (Elect ric power steering
system).......................................................... 279 Warning light .................................................413
Power switch ...................................................182 Auto power off function .......................... 185
Changing the power switch modes . 185
Power switch (engine switch) If your vehicle has to be stopped in an
emergency ................................................ 402
Power windows Door lock linked window operation..152
Jam protection function............................. 151
Operation......................................................... 151
Window lock switch ..................................153
Pre-Collision System (PCS) Function ............................................................218
PCS OFF switch ........................................ 220
Warning light .................................................416
R
Radar cruise control (dynamic radar cruise control with full-speed range)............. 236
Radiator ........................................................... 368
RCTA Function .......................................................... 259
Warning message.....................................260
RCTA (Rear Cross Traffic Alert) ......... 250
RCTA function ............................................. 260
Rear automatic air conditioning system .......................................................................... 309
Rear Cross Traffic Alert (RCTA) ......... 259
Rear door sunshades ................................. 340
Rear fog lights Switch .............................................................. 204
Rear seats ........................................................ 130 Adjustment....................................................... 131
Folding down the rear seatbacks......... 131 Head restraints..............................................143
Seat heaters ....................................................312
Rear side marker lights Light switch .................................................... 198
Replacing light bulbs................................393
Rear turn signal lights Replacing light bulbs....................393, 397
Turn signal lever ...........................................192
Wattage ......................................................... 460
Rear view mirror Inside rear view mirror ..............................147
Outside rear view mirrors...................... 148
Rear window defogger .............................300
Rear window wiper.....................................208
Refueling Capacity .........................................................454
Fuel types .......................................................454
If the fuel filler do or cannot be opened
......................................................................... 438
Opening the fuel tank cap ................... 209
Regenerative braking ....................................67
Remote Touch .............................................. 292
Replacing Electronic key battery ............................. 386
Fuses................................................................ 388
Light bulbs ..................................................... 392
Tires .................................................................. 424
Resetting the message indicating mainte- nance is required ...................................... 356
Rev indicator .................................................... 85
Rev peak............................................................. 85
Road Sign Assist .............. ............................ 234
RSA (Road Sign Assist) ............................ 234
S
Seat belt reminder light.....................413, 414
Seat belts............................................................ 26 Automatic Locking Retractor................. 28
Child restraint system installation ......... 46
Cleaning and maintaining the seat belt..........................................................................353
Emergency Locking Retractor .............. 28

516Alphabetical Index
Installing tire pressure warning valves and transmitters .......................................377
Registering ID codes ............................... 379
Warning light ................................................. 414
Tires Chains ............................................................. 287
Checking ....................................................... 374
If you have a flat tire .................................. 424
Inflation pressure....................................... 380
Information .................................................... 463
Replacing ....................................................... 424
Rotating tires ................................................ 376
Size....................................................................458
Snow tires ......................................................286
Spare tire........................................................ 424
Tire inflation pressure display function......................................................................... 376
Tire pressure warning system ............. 376
Warning light ................................................. 414
Tools.................................................................. 425
Top tether strap................................................57
Total load capacity ...................................... 452
Towing Dinghy towing ................................................ 181
Emergency towing ...................................405
Towing eyelet .............................................. 407
Trailer towing ...................................................171
TRAC (Traction Control) ........................ 279
Traction battery (hybrid battery) Hybrid battery (traction battery) air vents.............................................................................. 71
Location............................................................. 69
Specification ................................................. 454
Warning message......................................... 72
Traction Control (TRAC) ........................ 279
Traction motor (electric motor) ............... 66
Trailer Sway Control.................................. 279
Trailer towing ................................................... 171
Transmission Driving mode select switch .................. 276
Hybrid transmission .................................. 189
M mode ............................................................. 191 Paddle shift switches ........................ 190, 191
Trip meters ........................................................ 87
Turn signal lights Replacing light bulbs................................393
Turn signal lever ...........................................192
Wattage ......................................................... 460
U
USB charging ports.................................... 329
V
Vanity lights.................................................... 340Wattage ......................................................... 460
Vanity mirrors ............................................... 340
VDIM (Vehicle Dynamics Integrated Man- agement)...................................................... 279
Vehicle data recording ....................................7
Vehicle Dynamics Integrated Manage- ment (VDIM).............................................. 279
Vehicle identification number ................ 452
Vehicle Stability Control (VSC) ........... 278
Ventilators (seat ventilators).....................312
VSC (Vehicle Stability Control) ........... 278
W
Warning buzzers
Approach warning.................................... 242
Brake Override System ...........................412
Door lock .......................................................... 110
Downshifting ................................................... 191
Drive-Start Control.....................................412
Electric power steering.............................413
Hands off steering wheel warning (LTA).......................................................................... 232
High coolant temperature...................... 410
Hybrid system overheat ............................ 411
Intuitive parking assist ................... 258, 415
Low engine oil pressure ............................ 411
LTA (Lane Tracing Assist)225, 228, 414
Open door ....................................................... 112