2016 LEXUS RX450H light

464 6-1. Maintenance and care
RX450h_U_OM0E013U NOTICE ■
Cleaning detergents ●
Do not use the following types of detergent, as they may discolor the vehicle interior
or cause streaks or damage to painted surfaces:
• Non-seat portions: Organic substances such as benzene or gasoline, alkaline or
acidic solutions, dye, and bleach
• Seats: Alkaline or acidic solutions, su ch as thinner, benzene, and alcohol●
Do not use polish wax or polish cleaner. The instrument panel’s or other interior part’s
painted surface may be damaged. ■
Preventing damage to leather surfaces
Observe the following precautions to avoid damage to and deterioration of leather
surfaces: ●
Remove any dust or dirt from leather surfaces immediately. ●
Do not expose the vehicle to direct sunlight for extended periods of time. Park the
vehicle in the shade, especially during summer. ●
Do not place items made of vinyl, plastic, or containing wax on the upholstery, as they
may stick to the leather su rface if the vehicle interior heats up significantly.■
Water on the floor
Do not wash the vehicle floor with water.
Vehicle systems such as the audio system ma y be damaged if water comes into contact
with electrical components such as the au dio system above or under the floor of the
vehicle. Water may also cause the body to rust. ■
When cleaning the inside of the windshie ld (vehicles with Lexus Safety System+)
Do not allow glass cleaner to contact the lens. Also, do not touch the lens.
(  P. 292, 302) ■
Cleaning the inside of the rear window ●
Do not use glass cleaner to clean the rear window, as this may cause damage to the
rear window defogger heater wires or antenna. Use a cloth dampened with luke-
warm water to gently wipe the window cl ean. Wipe the window in strokes running
parallel to the heater wires or antenna. ●
Be careful not to scratch or damage the heater wires or antenna.

468 6-2. Maintenance
RX450h_U_OM0E013U * : Vehicles with sing le-beam headlightsVehicle interior Items Check points
Accelerator pedal • The accelerator pedal should move smoothly (with-
out uneven pedal effort or catching).
Brake pedal • Does the brake pedal move smoothly?
• Does the brake pedal have appropriate clearance
from the floor? (  P. 588)
• Does the brake pedal have the correct amount of
free play? (  P. 588)
Brakes • The vehicle should not pull to one side when the
brakes are applied.
• The brakes should work effectively.
• The brake pedal should not feel spongy.
• The brake pedal should not get too close to the floor
when the brakes are applied.
Head restraints • Do the head restraints move smoothly and lock
securely?
Hybrid transmission “Park”
mechanism • When parked on a slope and the shift lever is in P, is
the vehicle securely stopped?
Indicators/buzzers • Do the indicators and buzzers function properly?
Lights • Do all the lights come on?
• Are the headlights aimed correctly?
* (  P. 511)
Parking brake • Does the parking brake switch operate normally?
• When parked on a slope and the parking brake is on,
is the vehicle securely stopped?
Seat belts •Do the seat belt s operate smoothly?
• The seat belts should not be damaged.
Seats • Do the seat controls operate properly?
Steering wheel • Does the steering wheel rotate smoothly?
• Does the steering wheel have the correct amount of
free play?
• There should not be an y strange sounds coming
from the steering wheel.

471
RX450h_U_OM0E013U 6
Maintenance and care 6-3. Do-it-yourself maintenance
Do-it-yourself service precautions If you perform maintenance by yourself, be sure to follow the correct proce-
dure as given in these sections. Items Pa r t s a n d t o o l s
12-volt battery con-
dition (  P. 4 8 3 ) •Grease
• Conventional wrench (for terminal clamp bolts)
Brake fluid level
(  P. 4 8 1 ) • FMVSS No.116 DOT 3 or SAE J1703 brake fluid
• Rag or paper towel
• Funnel (used only for adding brake fluid)
Engine/power con-
trol unit coolant level
(  P. 4 7 9 ) • “Toyota Super Long Life Coolant” or a similar high quality
ethylene glycol-based non-silicate, non-amine, non-nitrite
and non-borate coolant with long-life hybrid organic acid
technology
For the U.S.A.:
“Toyota Super Long Life Coolant” is pre-mixed with 50%
coolant and 50% deionized water.
For Canada:
“Toyota Super Long Life Coolant” is pre-mixed with 55%
coolant and 45% deionized water.
• Funnel (used only for adding coolant)
Engine oil level
(  P. 4 76 ) • “Toyota Genuine Motor Oil” or equivalent
• Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses (  P. 5 0 8 ) • Fuse with same amperage rating as original
Headlight aim
*
(  P. 511) • Phillips-head screwdriver
Light bulbs
(  P. 5 1 3 ) • Bulb with same number and wattage rating as original
•Flathead screwdriver •Wrench
Radiator and con-
denser (  P. 4 8 0 ) 
Tire inflation pres-
sure (  P. 4 9 6 ) • Tire pressure gauge • Compressed air source

472 6-3. Do-it-yourself maintenance
RX450h_U_OM0E013U * : Vehicles with sing le-beam headlightsWa s h e r f l u i d
(  P. 4 8 2 ) • Water or washer fluid containi ng antifreeze (for winter use)
• Funnel (used only for adding water or washer fluid)
WA R N I N G
The engine compartment contains many mechanisms and fluids that may move suddenly,
become hot, or become electrically energized. To avoid death or serious injury, observe
the following precautions. ■
When working on the engine compartment ●
Make sure that the indicator on the power switch and the “READY” indicator are
both off. ●
Keep hands, clothing and tools away from the moving fan and engine drive belt.●
Be careful not to touch the engine, power control unit, radiator, exhaust manifold, etc.
right after driving as they may be hot. Oil and other fluids may also be hot. ●
Do not leave anything that may burn easily, such as paper and rags, in the engine
compartment. ●
Do not smoke, cause sparks or expose an open flame to fuel. Fuel fumes are flamma-
ble. ■
When working near the electric cooling fans or radiator grille
Be sure the power switch is off.
With the power switch in ON mode, the electric cooling fans may automatically start to
run if the air conditioning is on and/or the coolant temperature is high. (  P. 4 8 0 )■
Safety glasses
Wear safety glasses to prevent flying or fallin g material, fluid spray, etc. from getting in
your eyes.
NOTICE ■
If you remove the air cleaner filter
Driving with the air cleaner filter removed may cause excessive engine wear due to dirt
in the air. Items Pa r t s a n d t o o l s

4736-3. Do-it-yourself maintenance
6
Maintenance and care
RX450h_U_OM0E013U Pull the hood lock release lever. The hood will pop up slightly.
Pull up the auxiliary catch lever and
lift the hood.Hood Release the lock from the inside of the vehicle to open the hood. 1
2
WA R N I N G ■
Pre-driving check
Check that the hood is fully closed and locked.
If the hood is not locked properly, it may open while the vehicle is in motion and cause
an accident, which may result in death or serious injury.

4816-3. Do-it-yourself maintenance
6
Maintenance and care
RX450h_U_OM0E013U ■
Checking fluid level
The brake fluid level should be
between the “MAX” and “MIN” lines
on the tank.
■
Adding fluid
Make sure to check the fluid type and prepare the necessary item. ■
Brake fluid can absorb moisture from the air
Excess moisture in the brake fluid can cause a dangerous loss of braking efficiency. Use
only newly opened brake fluid.Brake fluid
Fluid type FMVSS No.116 DOT 3 or SAE J1703 brake fluid
Items Clean funnel
WA R N I N G ■
When filling the reservoir
Take care as brake fluid can harm your hands and eyes and damage painted surfaces.
If fluid gets on your hands or in your eyes, flush the affected area with clean water
immediately.
If you still experience discomfort, see a doctor.
NOTICE ■
If the fluid level is low or high
It is normal for the brake fluid level to go down slightly as the brake pads wear out or
when the fluid level in the accumulator is high.
If the reservoir needs frequent refil ling, there may be a serious problem.

4856-3. Do-it-yourself maintenance
6
Maintenance and care
RX450h_U_OM0E013U ●
The power switch mode is recorded by the vehicle. If the 12-volt battery is reconnected,
the vehicle will return the power switch mode to the status it was in before the 12-volt
battery was disconnected. Make sure to turn off the power before disconnect the 12-
volt battery. Take extra care when connecting the 12-volt battery if the power switch
mode prior to discharge is unknown.
If the system will not start even after multiple attempts at all methods above, contact your
Lexus dealer.
WA R N I N G ■
Chemicals in the 12-volt battery
The 12-volt battery contains poisonous and corrosive sulfuric acid and may produce
hydrogen gas which is flammable and explosive. To reduce the risk of death or serious
injury, take the following precautions while working on or near the 12-volt battery: ●
Do not cause sparks by touching the 12-volt battery terminals with tools. ●
Do not smoke or light a match near the 12-volt battery. ●
Avoid contact with eyes, skin and clothes. ●
Never inhale or swallow electrolyte. ●
Wear protective safety glasses when working near the 12-volt battery.●
Keep children away from the 12-volt battery. ■
Where to safely charge the 12-volt battery
Always charge the 12-volt battery in an open area. Do not charge the 12-volt battery in
a garage or closed room where th ere is insufficient ventilation.■
How to recharge the 12-volt battery
Only perform a slow charge (5 A or less). The 12-volt battery may explode if charged
at a quicker rate. ■
Emergency measures regarding electrolyte ●
If electrolyte gets in your eyes
Flush your eyes with clean water for at least 15 minutes and get immediate medical
attention. If possible, continue to apply water with a sponge or cloth while traveling to
the nearest medical facility. ●
If electrolyte gets on your skin
Wash the affected area thoroughly. If you fe el pain or burning, get medical attention
immediately. ●
If electrolyte gets on your clothes
It can soak through clothing on to your skin. Immediately take off the clothing and fol-
low the procedure above if necessary. ●
If you accidentally swallow electrolyte
Drink a large quantity of water or milk. Get emergency medica l attention immedi-
ately. ■
When handling the 12-volt battery
 P. 5 7 2

488 6-3. Do-it-yourself maintenance
RX450h_U_OM0E013U Your vehicle is equipped with a tire pressure warning system that uses tire pres-
sure warning valves and transmitters to detect low tire inflation pressure before
serious problems arise.
◆ Installing tire pressure warning valves and transmitters
When replacing tires or wheels, tire pressure warning valves and transmitters
must also be installed.
When new tire pressure warning valves and transmitters are installed, new ID
codes must be registered in the tire pressure warning computer and the tire
pressure warning system must be initialized. Have tire pressure warning valve
and transmitter ID codes registered by your Lexus dealer. (  P. 4 8 9 )
◆ Initializing the tire pressure warning system ■
The tire pressure warning system must be initialized in the following circum-
stances: ●
When the tire inflation pressure is changed such as when changing travel-
ing speed. ●
When the tire inflation pressure is changed such as when the tire size is
changed. ●
When rotating the tires
When the tire pressure warning system is initialized, the current tire inflation
pressure is set as the benchmark pressure.Tire pressure warning system ●
The tire pressure detected by the tire
pressure warning system can be dis-
played on the multi-information display. The illustration used is intended as an exam-
ple, and may differ from the image that is
actually displayed on the multi-information
display.●
If the tire pressure drops below a prede-
termined level, the driver is warned by a
screen display and a warning light.
(  P. 5 3 8 ) The illustration used is intended as an exam-
ple, and may differ from the image that is
actually displayed on the multi-information
display.