Lexus RX450h (2022 year). Manual in english — page 27

447

7-2. Steps to take in an emergency

7

When trouble

ari

ses

and radiator core (radiator) for any
leaks.

Radiator
Cooling fans

If a large amount of coolant leaks, immedi-
ately contact your Lexus dealer.

4

The coolant level is satisfactory if it
is between the “FULL” and “LOW”
lines on the reservoir.

Reservoir
“FULL” line
“LOW” line
Radiator cap

5

Add coolant if necessary.

Water can be used in an emergency if

coolant is unavailable.

6

Start the hybrid system and turn the
air conditioning system on to check
that the radiator cooling fans oper-
ate and to check for coolant leaks
from the radiator or hoses.

The fans operate when the air conditioning

system is turned on immediately after a

cold start. Confirm that the fans are oper-

ating by checking the fan sound and air

flow. If it is difficult to check these, turn the

air conditioning system on and off repeat-

edly.

(The fans may not operate in freezing tem-

peratures.)

7

If the fans are not operating:
Stop the hybrid system immediately
and contact your Lexus dealer.
If the fans are operating:
Have the vehicle inspected at the
nearest Lexus dealer.

8

If the message does not disappear:

Stop the hybrid system and contact your

Lexus dealer.

If the message is not displayed:

Have the vehicle inspected at the nearest

A
B

A
B
C
D

448

7-2. Steps to take in an emergency

Lexus dealer.



If “Hybrid System Overheated Out-
put power reduced” is shown on the
multi-information display

1

Stop the vehicle in a safe place.

2

Stop the hybrid system and care-
fully lift the hood.

3

After the hybrid system has cooled
down, inspect the hoses and radia-
tor core (radiator) for any leaks.

Radiator
Cooling fans

If a large amount of coolant leaks, immedi-
ately contact your Lexus dealer.

4

The coolant level is satisfactory if it
is between the “FULL” and “LOW”
lines on the reservoir.

Reservoir
“FULL” line
“LOW” line

5

Add coolant if necessary.

Water can be used in an emergency if

coolant is unavailable.

6

Start the hybrid system and check if
“Hybrid System Overheated Out-
put power reduced” is shown on
the multi-information display.
If the message does not disappear:
Stop the hybrid system and contact
your Lexus dealer.
If the message is not displayed:
Have the vehicle inspected at the
nearest Lexus dealer.

A
B

A
B
C

WARNING

■

When inspecting under the hood of

your vehicle

Observe the following precautions.

Failure to do so may result in serious

injury such as burns.

●

If steam is seen coming from under the

hood, do not open the hood until the

steam has subsided. The engine com-

partment may be very hot.

449

7-2. Steps to take in an emergency

7

W

he

n t

ro

ub

le

a

ris

es

1

Stop the hybrid system. Shift the
shift lever to P and set the parking
brake.

2

Remove the mud, snow or sand
from around the front wheels.

3

Place wood, stones or some other
material under the front wheels to
help provide traction.

4

Restart the hybrid system.

5

Shift the shift lever to D or R and
release the parking brake. Then,
while exercising caution, depress
the accelerator pedal.

■

When it is difficult to free the vehicle

Press

to turn off TRAC.

WARNING

●

After the hybrid system has been

turned off, check that the “READY”

indicator is off.

When the hybrid system is operating,

the gasoline engine may automatically

start, or the cooling fans may suddenly

operate even if the gasoline engine

stops. Do not touch or approach rotat-

ing parts such as the fans, which may

lead to fingers or clothing (especially a

tie, a scarf or a muffler) getting caught,

resulting in serious injury.

●

Do not loosen the radiator cap and the

coolant reservoir caps while the hybrid

system and radiator are hot.

High temperature steam or coolant

could spray out.

NOTICE

■

When adding engine/power control

unit coolant

Add coolant slowly after the hybrid sys-

tem has cooled down sufficiently. Adding

cool coolant to a hot hybrid system too

quickly can cause damage to the hybrid

system.

■

To prevent damage to the cooling sys-

tem

Observe the following precautions:

●

Avoid contaminating the coolant with

foreign matter (such as sand or dust,

etc.).

●

Do not use any coolant additive.

If the vehicle becomes stuck

Carry out the following proce-
dures if the tires spin or the vehicle
becomes stuck in mud, dirt or snow:

Recovering procedure

450

7-2. Steps to take in an emergency

WARNING

■

When attempting to free a stuck vehi-

cle

If you choose to push the vehicle back

and forth to free it, make sure the sur-

rounding area is clear to avoid striking

other vehicles, 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 accel-

eration of the vehicle that may cause an

accident resulting in death or serious

injury.

NOTICE

■

To avoid damage to the hybrid trans-

mission and other components

●

Avoid spinning the front wheels and

depressing the accelerator pedal

more than necessary.

●

If the vehicle remains stuck even after

these procedures are performed, the

vehicle may require towing to be freed.

451

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Vehicle specifications

.

8-1. Specifications

Maintenance data (fuel, oil level,

etc.) . . . . . . . . . . . ..

452

Fuel information. . . . . . ..

461

Tire information. . . . . . ..

463

8-2. Customization

Customizable features. . .

472

8-3. Initialization

Items to initialize . . . . . .

485

452

8-1. 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 length

192.5 in. (4890 mm)

*1

196.9 in. (5000 mm)

*2

Overall width

74.6 in. (1895 mm)

Overall height

*3

67.7 in. (1720 mm)

Wheelbase

109.8 in. (2790 mm)

Tread

Front

64.4 in. (1635 mm)

*1

64.5 in. (1640 mm)

*2

Rear

64.0 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 capacity

5 (Front 2, Rear 3)

*1

6 (Front 2, Rear 4)

*2

Vehicle identification

453

8-1. Specifications

8

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tion number for your Lexus. It is used in
registering the ownership of your vehi-
cle.
This number is stamped on the top left
of the instrument panel.

On some models, this number is also
stamped under the right-hand front
seat.

This number is also on the Certification
Label.

■

Engine number

The engine number is stamped on the
engine block as shown.

Engine

Model

3.5 L 6-cylinder (2GR-FXS)

Type

6-cylinder V type, 4-cycle, gasoline

Bore and stroke

3.70



3.27 in. (94.0



83.0 mm)

Displacement

210.9 cu. in. (3456 cm

3

)

Valve clearance (engine cold)

Automatic adjustment

454

8-1. Specifications



Front



Rear

Fuel

Fuel type

Unleaded gasoline only

Octane Rating

91 (Research Octane Number 96) or higher

Fuel tank capacity
(Reference)

17.2 gal. (65 L, 14.3 Imp. gal.)

Electric motor (traction motor)

Type

Permanent magnet synchronous motor

Maximum output

123 kW

Maximum torque

247 ft•lbf (335 N•m, 34.2 kgf•m)

Type

Permanent magnet synchronous motor

Maximum output

50 kW

Maximum torque

103 ft•lbf (139 N•m, 14.2 kgf•m)

Hybrid battery (traction battery)

Type

Nickel-Metal hydride battery

Voltage

9.6 V/module

Capacity

6.5 Ah (3HR)

Quantity

30 modules

Nominal voltage

288 V

455

8-1. Specifications

8

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■

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-6A 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-
ter

5.6 qt. (5.3 L, 4.7 Imp. qt.)

A

456

8-1. Specifications

*

: The coolant capacity is a reference quantity.

If replacement is necessary, contact your Lexus dealer.

Cooling system

Capacity

*

Gasoline
engine



RX450h (Vehicles without 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 unit

2.0 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 organic acid technology

Do not use plain water alone.

Ignition system (spark plug)

Make

DENSO FK20HBR8

Gap

0.03 in. (0.8 mm)

NOTICE

■

Iridium-tipped spark plugs

Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.

457

8-1. Specifications

8

V

eh

icle

sp

ec

ific

atio

ns

*

: 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 rates

5 A max.

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 other than the above 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 type

Toyota 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 play

0.04



0.24 in. (1.0



6.0 mm)

458

8-1. Specifications

*

: Minimum pedal clearance when depressed with a force of 110 lbf (490 N, 50 kgf) while

the hybrid system is operating.



Type A

Brake pad wear limit

0.04 in. (1.0 mm)

Fluid type

FMVSS No. 116 DOT 3 or SAE J1703
FMVSS No. 116 DOT 4 or SAE J1704

Steering

Free play

Less than 1.2 in. (30 mm)

Tires and wheels

Tire size

235/65R18 106V, T165/90D18 107M (spare)

Tire inflation pressure
(Recommended cold tire
inflation pressure)



Front tire

33 psi (230 kPa, 2.3 kgf/cm

2

or bar)



Rear tire

33 psi (230 kPa, 2.3 kgf/cm

2

or bar)



Spare tire

60 psi (420 kPa, 4.2 kgf/cm

2

or bar)

Driving at high speeds (above 100 mph [160 km/h]) (in
countries where such speeds are permitted by law)

Add 5 psi (30 kPa, 0.3 kgf/cm

2

or bar) to the front and rear

tires. Never exceed the maximum cold tire inflation pres-
sure indicated on the tire sidewall.

Wheel size

18



8J, 18



4T (spare)

Wheel nut torque

76 ft•lbf (103 N•m, 10.5 kgf•m)

459

8-1. Specifications

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

Type B

Tire size

235/55R20 102V, T165/90D18 107M (spare)

Tire inflation pressure
(Recommended cold tire
inflation pressure)

RX450h:



Front tire

33 psi (230 kPa, 2.3 kgf/cm

2

or bar)



Rear tire

33 psi (230 kPa, 2.3 kgf/cm

2

or bar)



Spare tire

60 psi (420 kPa, 4.2 kgf/cm

2

or bar)

Driving at high speeds (above 100 mph [160 km/h]) (in
countries where such speeds are permitted by law)

Add 11 psi (70 kPa, 0.7 kgf/cm

2

or bar) to the front and rear

tires. Never exceed the maximum cold tire inflation pres-
sure indicated on the tire sidewall.
RX450hL:



Front tire

35 psi (240 kPa, 2.4 kgf/cm

2

or bar)



Rear tire

35 psi (240 kPa, 2.4 kgf/cm

2

or bar)



Spare tire

60 psi (420 kPa, 4.2 kgf/cm

2

or bar)

Driving at high speeds (above 100 mph [160 km/h]) (in
countries where such speeds are permitted by law)

Add 9 psi (62 kPa, 0.6 kgf/cm

2

or bar) to the front and rear

tires. Never exceed the maximum cold tire inflation pres-
sure indicated on the tire sidewall.

Wheel size

20



8J, 18



4T (spare)

Wheel nut torque

76 ft•lbf (103 N•m, 10.5 kgf•m)

460

8-1. Specifications

A: Wedge base bulbs (amber)
B: Wedge base bulbs (clear)

*1

: Vehicles with single-beam headlights

*2

: Vehicles without door trim ornament lights

Light bulbs

Light bulbs

Bulb No.

W

Type

Exterior

Front side marker lights

*1

W5W

5

B

Front turn signal lights

*1

7444NA

28/8

A

Rear turn signal lights

*1

WY21W

21

A

Back-up lights

*1

921

16

B

Interior

Door courtesy lights

*2



5

B

Vanity lights



8

B

461

8-1. Specifications

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■

Gasoline quality

In very few cases, driveability problems may

be caused by the brand of gasoline you are

using. If driveability problems persist, try

changing the brand of gasoline. If this does

not correct the problem, consult your Lexus

dealer.

■

Recommendation of the use of gasoline

containing detergent additives

●

Lexus recommends the use of gasoline

that contains detergent additives to avoid

the build-up of engine deposits.

●

All gasoline sold in the U.S.A. contains

minimum detergent additives to clean

and/or keep clean intake systems, per

EPA’s lowest additives concentration pro-

gram.

●

Lexus strongly recommends the use of

Top Tier Detergent Gasoline. For more

information on Top Tier Detergent Gaso-

line and a list of marketers, please go to

the official website www.toptiergas.com.

■

Recommendation of the use of low

emissions gasoline

Gasolines containing oxygenates such as

ethers and ethanol, as well as reformulated

gasolines, are available in some cities.

These fuels are typically acceptable for use,

providing they meet other fuel require-

ments.
Lexus recommends these fuels, since the

formulations allow for reduced vehicle

emissions.

■

Non-recommendation of the use of

blended gasoline

●

Use only gasoline containing up to 15%

ethanol.

DO NOT use any flex-fuel or gasoline

that could contain more than 15% etha-

nol, including from any pump labeled
E30 (30% ethanol [

]), E50 (50%

ethanol [

]), E85 (85% ethanol [

])

(which are only some examples of fuel

containing more than 15% ethanol).

●

If you use gasohol in your vehicle, be sure

that it has an octane rating no lower than

91.

●

Lexus does not recommend the use of

gasoline containing methanol.

■

Non-recommendation of the use of gas-

oline containing MMT

Some gasoline contains an octane enhanc-

ing additive called MMT (Methylcyclopen-

tadienyl Manganese Tricarbonyl).
Lexus does not recommend the use of gas-

oline that contains MMT. If fuel containing

MMT is used, your emission control system

may be adversely affected.
The malfunction indicator lamp on the

instrument cluster may come on. If this hap-

pens, contact your Lexus dealer for service.

■

If your engine knocks

●

Consult your Lexus dealer.

●

You may occasionally notice light knock-

Fuel information

You must only use unleaded gaso-
line.

Select premium unleaded gasoline
with an octane rating of 91
(Research Octane Number 96) or
higher required for optimum
engine performance and fuel econ-
omy.

If the octane rating is less than 91,
damage to the engine may occur
and may void the vehicle warranty.

At minimum, the gasoline you use
should meet the specifications of
ASTM D4814 in the U.S.A.

A

B

C

462

8-1. Specifications

ing for a short time while accelerating or

driving uphill. This is normal and there is

no need for concern.

NOTICE

■

Notice on fuel quality

●

Do not use improper fuels. If improper

fuels are used, the engine will be dam-

aged.

●

Do not use leaded gasoline.

Leaded gasoline can cause damage to

your vehicle’s three-way catalytic con-

verters causing the emission control

system to malfunction.

●

Do not use gasohol other than the type

previously stated.

Other gasohol may cause fuel system

damage or vehicle performance prob-

lems.

●

Using unleaded gasoline with an

octane number or rating lower than

the level previously stated may cause

persistent heavy knocking.

At worst, this may lead to engine dam-

age and will void the vehicle warranty.

■

When refueling with gasohol

Take care not to spill gasohol. It can dam-

age your vehicle’s paint.

■

Fuel-related poor driveability

If poor driveability (poor hot starting,

vaporization, engine knocking, etc.) is

encountered after using a different type

of fuel, discontinue the use of that type of

fuel.