fuel LEXUS RX450h 2015 Workshop Manual

7365-2. Steps to take in an emergency
Follow the correction procedures.
After taking the specified steps to co rrect the suspected problem, check
that the warning light goes off.Warning light Warning light/Details Correction procedure
Open door warning light
(warning buzzer)
* 1
Indicates that one or more of
the doors is not fully closed. Check that all the doors are
closed.
Low fuel level warning light
Indicates remaining fuel is
approximately 2.7 gal. (10.1 L,
2.2 Imp. gal.) or less Refuel the vehicle.
(On the instru-
ment panel) Driver’s seat belt reminder
light (warning buzzer)
* 2
Warns the driver to fasten
his/her seat belt. Fasten the seat belt.
(On the center
panel) Front passenger’s seat belt
reminder light
(warning buzzer)
* 2
Warns the front passenger to
fasten his/her seat belt. Fasten the seat belt.
Master warning light
A buzzer sounds and the
warning light comes on and
flashes to indicate that the
master warning system has
detected a malfunction.  P. 74 3

7385-2. Steps to take in an emergency
■
If the malfunction indicator lamp comes on while driving
First check the following: ●
Is the fuel tank empty?
If it is, fill the fuel tank immediately.●
Is the fuel tank cap loose?
If it is, tighten it securely.
The lamp will go off after several driving trips.
If the light does not go off even after several trips, contact your Lexus dealer as soon
as possible.■
SRS warning light
This warning light system monitors the airb ag sensor assembly, front airbag sensors,
side and curtain shield airbag sensors, curtain shield and rear side airbag sensors,
door sensors, driver's seat position sensor, driver's seat belt buckle switch, front
passenger occupant classification system (ECU and sensors), “AIR BAG ON” indi-
cator light, “AIR BAG OFF” in dicator light, front pass enger's seat belt buckle
switch, seat belt pretensioner assemblies, inflators, interconnecting wiring and
power sources. (  P. 1 3 2 )■
Front passenger detection sensor, passen ger seat belt reminder and warning
buzzer ●
If luggage is placed on the front passenger seat, the front passenger detection
sensor may cause the warning light to flash and the warning buzzer to sound
even if a passenger is not sitting in the seat.●
If a cushion is placed on the seat, the sensor may not detect a passenger, and the
warning light may not operate properly.■
Electric power steering system warning light (warning buzzer)
When the 12-volt battery charge becomes insufficient or the voltage temporarily
drops, the electric power steering system warning light may come on and the warn-
ing buzzer may sound.
■
When the tire pressure warning light comes on
Check the tire inflation pressure and adjust to the appropriate level. Pushing the tire
pressure warning reset switch will not turn off the tire pressure warning light.

5
When trouble arises
7415-2. Steps to take in an emergency
CAUTION■
Maintenance of the tires
Each tire, including the spare (if provided ), should be checked monthly when cold
and inflated to the inflation pressure re commended by the vehicle manufacturer on
the vehicle placard or tire inflation pressure label (tire and load information label).
(If your vehicle has tires of a different size than the size indicated on the vehicle
placard or tire inflation pressure label [t ire and load information label], you should
determine the proper tire inflation pressure for those tires.)
As an added safety feature, your vehicl e has been equipped with a tire pressure
monitoring system (TPMS-tire pressure wa rning system) that illuminates a low tire
pressure telltale (tire pressure warning light) when one or more of your tires is sig-
nificantly under-inflated. Accordingly, when the low tire pressure telltale (tire pres-
sure warning light) illuminates, you should stop and check your tires as soon as
possible, and inflate them to the proper pressure. Driving on a significantly under-
inflated tire causes the tire to overheat an d can lead to tire failure. Under-inflation
also reduces fuel efficiency and tire tread life, and may affect the vehicle's handling
and stopping ability.
Please note that the TPMS (tire pressure warning system) is not a substitute for
proper tire maintenance, and it is the driver's responsibility to maintain correct tire
pressure, even if under-inflation has not reached the level to trigger illumination of
the TPMS low tire pressure telltale (tire pressure warning light).
Your vehicle has also been equipped with a TPMS (tire pressure warning system)
malfunction indicator to indicate when th e system is not operating properly. The
TPMS (tire pressure warning system) malf unction indicator is combined with the
low tire pressure telltale (tire pressure warning light). When the system detects a
malfunction, the telltale will flash for approximately one minute and then remain
continuously illuminated. This sequence will continue upon subsequent vehicle
start-ups as long as the malfunction exists . When the malfunction indicator is illumi-
nated, the system may not be able to detect or signal low tire pressure as intended.
TPMS (tire pressure warning system) malfunctions may occur for a variety of rea-
sons, including the installation of replacem ent or alternate tires or wheels on the
vehicle that prevent the TPMS (tire pressure warning system) from functioning
properly. Always check the TPMS (tire pressure warning system) malfunction tell-
tale after replacing one or more tires or wheels on your vehicle to ensure that the
replacement or alternate tires and wheels allow the TPMS (tire pressure warning
system) to continue to function properly.

5
When trouble arises
7535-2. Steps to take in an emergency
Indicates that the hybrid
system has overheated
A buzzer also sounds.
This message may be
displayed when driving
under severe operating
conditions. (For exam-
ple, when driving up a
long steep hill.) Stop and check.
(  P. 7 8 8 )
(Flashes) Indicates that the hybrid
battery (traction battery)
is low. • If a buzzer sounds inter-
mittently, stop the vehicle
in a safe place and shift
the shift lever to P to
charge the hybrid bat-
tery (traction battery).
• If a buzzer sounds con-
tinuously, immediately
stop the vehicle in a safe
place. Turn the
“POWER” switch off and
then to ON mode to
restart the hybrid system.
Ensuring the shift lever is
in P, charge the hybrid
battery (traction bat-
tery).
Indicates that remaining
fuel is approximately 2.7
gal. (10.1 L, 2.2 Imp. gal.)
or less Refuel the vehicle.Wa r n i n g m e s s a g e Details Correction procedure

5
When trouble arises
7555-2. Steps to take in an emergency
Messages displayed when refueling
The following messages are displayed after the fuel filler door opener is
pressed. If the messages do not ch ange or are displayed continuously,
have the vehicle checked by your Lexus dealer. Message Details
Preparing the vehicle for refueling.
Wait a moment.
You may commence refueling.
Finish refueling within 30 minutes.
Close the fuel filler door.

Vehicle specifications
6
7976-1. Specifications
Maintenance data
(fuel, oil level, etc.) .............. 798
Fuel information ...................... 810
Tire information....................... 813
6-2. Customization
Customizable features ........ 825
6-3. Initialization
Items to initialize .................... 837

8006-1. Specifications
■ Engine number
The engine number is stamped on
the engine block as shown.
Engine
FuelModel 2GR-FXE
Ty p e 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
)
Drive belt tension Automatic adjustment
Fuel type Unleaded gasoline only
Octane rating 91 (Research octane number 96) or higher
Fuel tank capacity
(Reference) 17.1 gal. (65 L, 14.2 Imp. gal.)

8036-1. Specifications
6
Vehicle specifications 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.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 vi scosity characteristic of the oil
when the oil is at high temperature. An oil with a higher viscosity
(one with a higher valu e) may be better suited if the vehicle is oper-
ated at high speeds, or under extreme load conditions.
How to read oil container label:
The International Lubricant Specification Advisory Committee
(ILSAC) Certification Mark is adde d to some oil cont ainers to help
you select the oil you should use. Outside temperature

8106-1. Specifications
Fuel information
■
Fuel tank opening for unleaded gasoline
To help prevent incorrect fueling, your Lexus has a fuel tank opening that only
accommodates the special nozzle on unleaded fuel pumps.■
If your engine knocks ●
Consult your Lexus dealer.●
You may occasionally notice light knocking for a short time while accelerating
or driving uphill. This is normal and there is no need for concern.■
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.■
Gasoline quality standards ●
Automotive manufacturers in the US, Europe and Japan have developed a
specification for fuel quality called the World-Wide Fuel Charter (WWFC) that
is expected to be applied worldwide.
●
The WWFC consists of four categories that are based on required emission
levels. In the US, category 4 has been adopted.
●
The WWFC improves air quality by lowering emissions in vehicle fleets, and
customer satisfaction th rough better performance.Your vehicle must use on ly unleaded gasoline.
Premium unleaded gasoline with an oc tane rating of 91 (Research Octane
Number 96) or higher required for optimum engine performance. If 91
octane cannot be obtained, you may us e unleaded gasoline with an octane
rating as low as 87 (Research Octane Number 91). Use of unleaded gaso-
line with an octane rating lower than 91 may result in engine knocking. Per-
sistent knocking can lead to engine damage and should be corrected by
refueling with higher octane unleaded gasoline.
At minimum, the gasoline you us e should meet the specifications of
ASTM D4814 in the U.S.A. an d CGSB3.5-M93 in Canada.

8116-1. Specifications
6
Vehicle specifications ■
Lexus recommends the use of gasoline containing detergent additives ●
Lexus recommends the use of gasoline that contains detergent additives to
avoid 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 Gasoline and a list of marketers, please go to
the official website www.toptiergas.com.■
Lexus recommends the use of cleaner burning gasoline
Cleaner burning gasoline, including reform ulated gasoline that contains oxygen-
ates such as ethanol or MTBE (Methyl Te rtiary Butyl Ether) is available in many
areas.
Lexus recommends the use of cleaner burning gasoline and appropriately blended
reformulated gasoline. These types of gasoline provide excellent vehicle perfor-
mance, reduce vehicle emissions and improve air quality.■
Lexus does not recommend blended gasoline
●
If you use gasohol in your Lexus, be sure that it has an octane rating no lower
than 87.
●
Lexus DOES NOT recommend the use of gasoline containing methanol. ●
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, E50, E85 (which are only some
examples of fuel containing more than
15% ethanol).DO NOT use gasoline contain-
ing more than 15% ethanol.
(30% ethanol)
(50% ethanol)
(85% ethanol)