flat LEXUS RX450H 2016 Service Manual

4976-3. Do-it-yourself maintenance
6
Maintenance and care
RX450h_U_OM0E013U
Tire valve
Tire pressure gauge
Remove the tire valve cap.
Press the tip of the tire pressure gauge onto the tire valve.
Read the pressure using the gauge gradations.
If the tire inflation pressure is not at the recommended level, adjust the pres-
sure.
If you add too much air, press the center of the valve to deflate.
After completing the tire inflation pressure measurement and adjustment,
apply soapy water to the valve and check for leakage.
Put the tire valve cap back on.
■Tire inflation pressure check interval
You should check tire inflation pressure ev ery two weeks, or at least once a month.
Do not forget to check the spare.
■Effects of incorrect tire inflation pressure
Driving with incorrect tire inflation pressure may result in the following:
●Reduced fuel economy
●Reduced driving comfort and poor handling
●Reduced tire life due to wear
●Reduced safety
●Damage to the drive train
If a tire needs frequent inflating, ha ve it checked by your Lexus dealer.
Inspection and adjustment procedure
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4986-3. Do-it-yourself maintenance
RX450h_U_OM0E013U
■Instructions for checking tire inflation pressure
When checking tire inflation pressure, ob serve the following:
●Check only when the tires are cold.
If your vehicle has been parked for at least 3 hours or has not been driven for more than
1 mile or 1.5 km, you will get an accurate cold tire inflation pressure reading.
●Always use a tire pressure gauge.
It is difficult to judge if a tire is properly inflated based only on its appearance.
●It is normal for the tire inflation pressure to be higher after driving as heat is generated
in the tire. Do not reduce tire inflation pressure after driving.
●Never exceed the vehicle capacity weight.
Passengers and luggage weight should be placed so that the vehicle is balanced.
WARNING
■Proper inflation is critical to save tire performance
Keep your tires properly inflated.
If the tires are not properly inflated, the following conditions may occur which could
lead to an accident resulting in death or serious injury:
●Excessive wear
●Uneven wear
●Poor handling
●Possibility of blowouts resu lting from overheated tires
●Air leaking from between tire and wheel
●Wheel deformation and/or tire damage
●Greater possibility of tire damage while driving (due to road hazards, expansion
joints, sharp edges in the road, etc.)
NOTICE
■When inspecting and adjust ing tire inflation pressure
Be sure to put the tire valve caps back on.
If a valve cap is not installed, dirt or moisture may get into the valve and cause an air
leak, resulting in decreased tire inflation pressure.

4996-3. Do-it-yourself maintenance
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Maintenance and care
RX450h_U_OM0E013U
When replacing wheels, care should be taken to ensure that they are equivalent
to those removed in load capacity, diameter, rim width and inset
*.
Replacement wheels are available at your Lexus dealer.
*: Conventionally referre d to as “offset”.
Lexus does not recommend using the following:
●Wheels of different sizes or types
●Used wheels
●Bent wheels that have been straightened
●Use only Lexus wheel nuts and wrenches designed for use with your alumi-
num wheels.
●When rotating, repairing or changing your tires, check that the wheel nuts are
still tight after driving 1000 miles (1600 km).
●Be careful not to damage the aluminum wheels when using tire chains.
●Use only Lexus genuine balance weights or equivalent and a plastic or rubber
hammer when balancing your wheels.
■When replacing wheels
The wheels of your vehicle are equipped with tire pressure warning valves and transmit-
ters that allow the tire pressure warning system to provide advance warning in the event
of a loss in tire inflation pressure. Whenever wheels are replaced, tire pressure warning
valves and transmitters must be installed. (P. 488)
Wheels
If a wheel is bent, cracked or heavily corroded, it should be replaced. Other-
wise, the tire may separate from the wheel or cause a loss of handling control.
Wheel selection
Aluminum wheel precautions

5046-3. Do-it-yourself maintenance
RX450h_U_OM0E013U
Change the rest position of the windshie ld wipers to the service position using
the wiper lever and then lift a windshield wiper. ( P. 263)
While pressing and holding the
wiper blade lock release button,
remove the wiper blade.
When performing this operation, make
sure to hold the hook portion of the
wiper arm securely.
While disengaging the cap lock,
using a tool such as a flathead
screwdriver if necessary, remove the
wiper insert.
Hold the cap on the end of the wiper
insert when removing the wiper insert.
(The cap is integrated into the wiper
insert.)
If using a screwdriver, make sure to wrap
its tip with tape to protect the wiper
blade.
Install a new wiper insert.
Make sure to push the wiper insert firmly until the cap lock is engaged.
After installation, check that th e cap lock is locked securely.
Install the wiper blade to the wiper arm.
Make sure to push the wiper blade until it is locked.
When performing this operation, make sure to hold the hook portion of the wiper arm
securely.
After installation, check that the wiper blade is locked securely.
Windshield wiper inserts
Replacing a windshield wiper insert
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Hook portion
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Cap lock
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5066-3. Do-it-yourself maintenance
RX450h_U_OM0E013U
●Flathead screwdriver
●Lithium battery CR2032
Take out the mechanical key.
Remove the cover.
To prevent damage to the key, cover the
tip of the flathead screwdriver with a
tape.
Remove the depleted battery.
Insert a new battery with the “+” termi-
nal facing up.
Electronic key battery
Replace the battery with a new one if it is depleted.
You will need the following items:
Replacing the battery
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5166-3. Do-it-yourself maintenance
RX450h_U_OM0E013U
■Front side marker lights (vehicle s with single-beam headlights)
To ensure enough space to per-
form work, turn the steering
wheel to rotate the front wheel
away from the bulb to be
replaced.
Remove the 3 fender liner clips.
Turn the steering wheel to the left
when replacing the right side light
bulb, and turn the steering wheel to
the right when replacing the left side
light bulb.
When removing a fender liner clip,
use a flathead screwdriver to pry the
center portion out and then remove
the whole clip.
Pull back the fender liner until the
connector is visible.
Partially remove the fender liner
and turn the bulb base counter-
clockwise and remove it.
Replacing light bulbs
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5186-3. Do-it-yourself maintenance
RX450h_U_OM0E013U
■Front turn signal lights (vehic les with single-beam headlights)
To ensure enough space to per-
form work, turn the steering
wheel to rotate the front wheel
away from the bulb to be
replaced.
Remove the 3 fender liner clips.
Turn the steering wheel to the left
when replacing the right side light
bulb, and turn the steering wheel to
the right when replacing the left side
light bulb.
When removing a fender liner clip,
use a flathead screwdriver to pry the
center portion out and then remove
the whole clip.
Pull back the fender liner until the
connector is visible.
Partially remove the fender liner
and turn the bulb base counter-
clockwise and remove it.
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5206-3. Do-it-yourself maintenance
RX450h_U_OM0E013U
■Rear turn signal lights (vehic les with single-beam headlights)
Open the back door and apply
protective tape to the vehicle
body around the taillight.
Use masking tape, etc. Do not use
duct tape, as it may leave residue or
damage the paint when removed.
Using a flathead screwdriver,
remove the cover.
To prevent scratching the vehicle,
wrap the tip of the flathead screw-
driver with a cloth, etc.
Remove the 2 screws.
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5236-3. Do-it-yourself maintenance
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Maintenance and care
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■Back-up lightsOpen the back door and remove
the cover.
Using a flathead screwdriver, remove
the cover.
To prevent scratching to the vehicle,
wrap the tip of the flathead screw-
driver with a cloth, etc.
Turn the bulb base counterclock-
wise and remove it.
Remove the light bulb.
Install a new light bulb and then
install the bulb base to the light
unit by inserting it and turning it
clockwise.
After installing th e bulb base, wiggle
it lightly to make sure it is securely
installed and turn on the back-up
lights to visually check that there is no
light leaking from between the bulb
base and light unit.
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527
7When trouble arises
RX450h_U_OM0E013U
7-1. Essential informationEmergency flashers ..................528
If your vehicle has to be stopped in an
emergency................................. 529
7-2. Steps to take in an emergency
If your vehicle needs to be towed ...........................................530
If you think something is wrong ...........................................535
If a warning light turns on or a warning buzzer
sounds.......................................... 536
If a warning message is displayed..................................... 543
If you have a flat tire .................. 549
If the hybrid sy stem will not
start ................................................ 561
If the shift lever cannot be shifted from P............................ 563
If the electronic key does not operate properly ............. 564
If the 12-volt battery is discharged .................................568
If your vehicle overheats ......... 574
If the vehicle becomes stuck ............................................. 578