2010 Lexus HS250h washer fluid

198
2-3. Operating the lights and windshield wipers
■Raindrop sensor (vehicles with rain-sensing windshield wipers)
If the wiper switch is turned to the position while the “POWER” switch is in
ON mode, the wipers will operate once to show that AUTO mode is activated.
■In extremely hot or cold weather (vehicles with rain-sensing windshield wipers)
The system will turn off if the windshield gets extremely hot (more than 194 F
[90 C]) or cold (less than 14 F [-10C]).
If it does not operate, use other than AUTO mode.
■If no windshield washer fluid sprays
Check that the washer nozzles are not blocked if there is washer fluid in the washer
fluid tank.
CAUTION
■Caution regarding the use of windshield wipers in “AUTO” mode (vehicles with
rain-sensing windshield wipers)
The windshield wipers may operate unexpect edly if the sensor is touched or the
windshield is subject to vibration in “AUTO” mode. Take care that your fingers etc.
do not become caught in the windshield wipers.
The raindrop sensor judges the amount of
raindrops.
An optical sensor is adopted. It may not oper-
ate properly when sunlight from the rising or
setting of the sun intermittently strikes the
windshield, or if bugs etc. are present on the
windshield.

199
2-3. Operating the lights and windshield wipers
2
When driving
NOTICE
■When the windshield is dry
Do not use the wipers, as they may damage the windshield.
■When the washer fluid tank is empty
Do not operate the switch continually as the washer fluid pump may overheat.
■When a nozzle becomes blocked
Do not try to clear it with a pin or other object. The nozzle will be damaged.
■To prevent 12-volt battery discharge
Do not leave the wipers on longer than necessary when the hybrid system is off.

200
2-3. Operating the lights and windshield wipers
Headlight cleaner switch
: If equipped
■The headlight cleaners can be operated when
The “POWER” switch is in ON mode an d the
headlight switch is turned on.
■Windshield washer linked operation
●When the windshield washer is operated with the “POWER” switch in ON
mode and the headlights on, the he adlight cleaners will operate once. 
(  P. 1 9 5 )
●From the second time the windshield wa sher is operated, the headlight cleaner
will not operate in sync with the windshield washer. 
(Turning the “POWER” switch to OFF or the lo
w beam headlights off resets the
headlight cleaner synchronization mode.)
NOTICE
■When the washer fluid tank is empty
Do not press the switch continually as the washer fluid pump may overheat.
Washer fluid can be sprayed on the headlights.
Press the switch to clean the
headlights.

244
2-5. Driving information
Winter driving tips
Carry out the necessary preparations and inspections before driving the
vehicle in winter. Always drive the vehicle in a manner appropriate to the
prevailing weather conditions.
■ Pre-winter preparations
●Use fluids that ar
e appropriate to the prevailing outside tempera -
tures.
• Engine oil
• Engine/power control unit coolant
• Washer fluid
● Ha
ve the vehicle fitted with four snow tires or purchase a set of
tire chains for the front tires.
Ensure that all tires are the same si ze and brand, and that chains match
the size of the tires.
■ Before driving the vehicle
Perform the following accord ing to the driving conditions:
● D
o not try to forcibly open a w indow or move a wiper that is fro-
zen. Pour warm water over the frozen ar
ea to melt the ice. Wipe
away the water immediately to prevent it from freezing.
● T
o ensure proper operation of the climate control system fan,
remove any snow that has accumulated on the air inlet vents in
front of the windshield.
● R
emove any ice that has accumul ated on the vehicle chassis.
● P
eriodically check for and remove any excess ice or snow that
may have accumulated in the wheel well or on the brakes.
■ When driving the v
ehicle
Accelerate the vehicle slowly and drive at a reduced speed suitable to the
road conditions.

411
4-2. Maintenance
4
Maintenance and care
General maintenance
Engine compartment
Tr u n k
ItemsCheck points
Brake fluidIs the brake fluid at the correct level?
( P. 4 3 1 )
CoolantIs the engine coolant at the correct
level? ( P. 4 2 8 )
Engine oilIs the engine oil at the correct level? 
( P. 4 2 4 )
Exhaust systemThere should not be any fumes or
strange sounds.
Radiator/condenser
The radiator and condenser should
be free from foreign objects. 
( P. 4 3 0 )
Wa s h e r f l u i dIs there sufficient washer fluid? 
( P. 4 3 2 )
ItemsCheck points
12-volt batteryCheck the connections. ( P. 4 3 3 )
Listed below are the general maintenance items that should be performed
at the intervals specified in the “Warranty and Service Guide” or “Owner’s
Manual Supplement”. It is recommend ed that any problem you notice
should be brought to the attention of your Lexus dealer or qualified service
shop for advice.

417
4-3. Do-it-yourself maintenance
4
Maintenance and care
ItemsPa r t s a n d t o o l s
Engine oil level (P. 4 2 4 )
• “Toyota Genuine Motor Oil” or
equivalent
•Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses ( P. 4 5 5 )• Fuse with same amperage rating as
original
Headlight aim ( P. 4 6 7 )• Phillips-head screwdriver
Light bulbs( P. 4 6 9 )
• Bulb with same number and watt-
age rating as original
• Phillips-head screwdriver
•Flathead screwdriver
•Wrench
Radiator and condenser (P. 4 3 0 )
Tire inflation pressure ( P. 4 4 5 )• Tire pressure gauge
• Compressed air source
Wa s h e r f l u i d ( P. 4 3 2 )
• Water or washer fluid containing
antifreeze (for winter use)
• Funnel (used only for adding water or washer fluid)

422
4-3. Do-it-yourself maintenance
Engine compartment
Engine coolant reservoir 
( P. 4 2 8 )
Engine oil filler cap 
( P. 425)
Engine oil level dipstick 
( P. 4 2 4 )
Power control unit coolant
reservoir ( P. 4 2 8 )
Brake fluid reservoir  (P. 4 3 1 )Fuse box ( P. 455)
Engine coolant radiator 
( P. 430)
Power control unit coolant
radiator ( P. 430)
Condenser ( P. 430)
Electric cooling fans
Washer fluid tank 
( P. 4 3 2 )

432
4-3. Do-it-yourself maintenance
Washer fluid
If any washer does not work or the
warning message appears on the
multi-information display, the
washer tank may be empty. Add
washer fluid.
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 refilling, there may be a serious problem.
CAUTION
■When adding washer fluid
Do not add washer fluid when the hybrid system is hot or operating as washer fluid
contains alcohol and may catch fire if spilled on the engine etc.
NOTICE
■Do not use any fluid other than washer fluid
Do not use soapy water or engine antifreeze instead of washer fluid. 
Doing so may cause streaking on the vehicle’s painted surfaces.
■Diluting washer fluid
Dilute washer fluid with water as necessary. 
Refer to the freezing temperatures listed on the washer fluid tank.