coolant level LEXUS UX250H 2019 Owners Manual

752-1. Instrument cluster
2
Vehicle status information and indicators
Warning lights inform the driver of mal-
functions in the indicated vehicle’s sys-
tems.
Warning lights
(U.S.A.)
Brake system warning light*1
(  P.386)
(red)
(Canada)
Brake system warning light*1
(  P.386)
Charging system warning
light
*2 (  P.386)
Low engine oil pressure warn-
ing light
*2 (  P.386)
(U.S.A.) Malfunction indicator lamp
*1
(  P.387)
(Canada) Malfunction indicator lamp
*1
(  P.387)
High coolant temperature
warning light
*2 (  P.387)
Tire pressure warning light
*1
(  P.387)
(yellow)
Brake system warning light*1
(  P.387)
SRS warning light
*1 (  P.388)
(U.S.A.) ABS warning light
*1 (
 P.388)
(Canada) ABS warning light
*1 (
 P.388)
(red)
Electric power st eering system
warning light
*1 (  P.388)
(yellow)
Electric power steering system
warning light
*1 ( P.388)
Slip indicator
*1 (  P.388)
(Flashes)
(U.S.A.)
Parking brake indicator
(  P.389)
(Flashes)
(Canada)
Parking brake indicator
(  P.389)
(Flashes)
Brake hold operated indicator*1
(  P.389)
(Flashes)
Intuitive parking assist OFF indi-
cator (if equipped) ( P.389)
(Flashes)
RCTA OFF indicator (if
equipped) ( P.389)
PKSB OFF indicator
*1 (if
equipped) ( P.390)
Low fuel level warning light
(  P.390)
Driver’s and front passenger’s
seat belt re minder light
(  P.390)
Rear passengers’ seat belt
reminder lights
*2 (  P.391)
Brake Override System warn-
ing light/Drive-Start Control
warning light/PKSB warning
light
*2 (  P.391)
(orange)
LTA indicator*2 ( P.391)
(Flashes or
illuminates)PCS warning light*1 (  P.392)

782-1. Instrument cluster
■Locations of gauges and meters
The units of measure may differ depending on the intended destination of the vehicle.
Multi-information display
Presents the driver with a variety of vehicle data ( P.87)
Displays warning messages if a malfunction occurs (P.395)
Outside temperature
Displays the outside temperature within the range of -40°F (-40°C) to 122°F (50°C)
Low outside temperature indicator comes on wh en the ambient temperature is 37°F (3°C)
or lower
Speedometer
Hybrid System Indicator/tachometer
Displays hybrid system outp ut or regeneration level (P.79)
This display changes to a tachometer depending on the driving mode, and can be set to
show the tachometer in any driving mode on the settings display. (P.91, 255)
Clock
Time displayed is linked to the analog clock on the center panel. (P.301)
Engine coolant temperature gauge
Displays the engine coolant temperature
Fuel gauge
Displays the quantity of fuel remaining in the tank
Gauges and meters (except F SPORT models)
Meter display
A
B
C
D
E
F
G

822-1. Instrument cluster
■Locations of gauges and meters
When the main meter is in the side posi tion, some of the meter displays and the
gauge layout will change.
When the main meter is in the center position
The units of measure may differ depending on the intended destination of the vehicle.
Engine coolant temperature gauge
Displays the engine coolant temperature
Outside temperature
Displays the outside temperature within the range of -40°F (-40°C) to 122°F (50°C)
Low outside temperature indicator comes on wh en the ambient temperature is 37°F (3°C)
or lower
Speedometer
Hybrid System Indicator/tachometer
Displays hybrid system outp ut or regeneration level (P.84)
This display changes to a tachometer depending on the driving mode, and can be set to
show the tachometer in any driving mode on the settings display. (P.91, 255)
• Rev indicator
•Rev peak
Shift position/shift range ( P.167)
Clock
Gauges and meters (F SPORT models)
Meter display
A
B
C
D
E
F

2634-6. Driving tips
4
Driving
Use fluids that are appropriate to
the prevailing outside temperatures.
• Engine oil
• Engine/power control unit coolant
• Washer fluid
Have a service technician inspect
the condition of the 12-volt battery.
 It is recommended that the vehicle is
fitted with four snow run-flat tires or
purchase a set of tire chains for the
front tires.
Ensure that all tires are the same size and
brand, and that chains match the size of the
tires.
Perform the following according to the
driving conditions:
Do not try to forcibly open a window
or move a wiper that is frozen. Pour
warm water over the frozen area to
melt the ice. Wipe away the water
immediately to prevent it from
Winter driving tips
Carry out the necessary prepara-
tions and inspections before driving
the vehicle in winter. Always drive
the vehicle in a manner appropriate
to the prevailing weather condi-
tions.
Preparation for winter
WARNING
■Driving with snow tires
Observe the following precautions to
reduce the risk of accidents.
Failure to do so may result in a loss of
vehicle control and cause death or seri-
ous injury.
●Use tires of the specified size.
●Maintain the recommended level of air
pressure.
●Do not drive in excess of 75 mph (120
km/h), regardless of the type of snow
tires being used.
●Use snow tires on all, not just some
wheels.
■Driving with tire chains
Observe the following precautions to
reduce the risk of accidents.
Failure to do so may result in the vehicle
being unable to be driven safely, and may
cause death or serious injury.
●Do not drive in excess of the speed
limit specified for the tire chains being
used, or 30 mph (50 km/h), which-
ever is lower.
●Avoid driving on bumpy road surfaces
or over potholes.
●Avoid sudden acceleration, abrupt
steering, sudden br aking and shifting
operations that cause sudden engine
braking.
●Slow down sufficiently before entering
a curve to ensure that vehicle control is
maintained.
●Do not use LTA (Lane Tracing Assist).
NOTICE
■Repairing or replacing snow tires
Request repairs or replacement of snow
tires from Lexus dealers or legitimate tire
retailers.
This is because the removal and attach-
ment of snow tires affects the operation
of the tire pressure warning valves and
transmitters.
Before driving the vehicle

3296-2. Maintenance
6
Maintenance and care
3Press or of the meter control
switches, select “Scheduled Mainte-
nance” and then press and hold the
“OK”.
4
Select “Yes” and press “OK”.
A message will be disp layed when the reset
procedure has been completed.
You can perform some maintenance
procedures by yourself.
Please be aware that do-it-yourself
maintenance may affect warranty cov-
erage.
The use of Lexus repair manuals is recom-
mended.
For details about warranty coverage, refer
to the separate “Owner’s Guide”, “War-
ranty and Service Guide”, “Owner’s Man-
ual Supplement” or “Warranty Booklet”.
Do-it-yourself maintenance
General maintenance
Listed below are the general main-
tenance items that should be per-
formed at the intervals specified in
the “Warranty and Service Guide”
or “Owner’s Manual Supplement”.
It is recommended that any prob-
lem you notice should be brought to
the attention of your Lexus dealer
or qualified service shop for advice.
WARNING
■If the hybrid system is operating
Turn the hybrid system off and ensure
that there is adequate ventilation before
performing maintenance checks.
Engine compartment
ItemsCheck points
Brake fluidIs the brake fluid at the cor-
rect level? ( P.341)
Engine/power
control unit
coolantIs the engine coolant at the
correct level? ( P.339)
Engine oilIs the engine oil at the cor-
rect level? ( P.337)
Exhaust sys-
temThere should not be any
fumes or strange sounds.
Radiator/con-
denserThe radiator and con-
denser should be free from
foreign objects. ( P.340)
Washer fluidIs there sufficient washer
fluid? ( P.341)

3336-3. Do-it-yourself maintenance
6
Maintenance and care
6-3.Do-it-yourself maintenance
Do-it-yourself service pre-
cautions
If you perform maintenance by
yourself, be sure to follow the cor-
rect procedure as given in these
sections.
Maintenance
ItemsParts and tools
12-volt bat-
tery condition
( P.342)•Grease
•Conventional wrench
(for terminal clamp
bolts)
Brake fluid
level
( P.341)
• FMVSS No.116 DOT 3
or SAE J1703 brake
fluid
FMVSS No.116 DOT 4
or SAE J1704 brake
fluid
• Rag or paper towel
• Funnel (used only for adding brake fluid)
Engine/power
control unit
coolant level
( P.339)
•“Toyota Super Long Life
Coolant” or a similar
high quality ethylene gly-
col-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)
Hybrid battery
(traction bat-
tery) air intake
vent
( P.365)
• Vacuum cleaner, etc.
• Phillips screwdriver
Engine oil
level
( P.337)
•“Toyota Genuine Motor
Oil” or equivalent
• Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses
( P.370)• Fuse with same amper-
age rating as original
Light bulbs
( P.374)•Bulb with same number
and wattage rating as
original
Headlight aim• Phillips-head screw-driver
Radiator and
condenser
( P.340)

ItemsParts and tools

3376-3. Do-it-yourself maintenance
6
Maintenance and care
Fuse boxes (P.370)
Engine coolant reservoir ( P.339)
Engine oil filler cap ( P.338)
Power control unit coolant reservoir ( P.340)
Brake fluid reservoir ( P.341)
Radiator ( P.340)
Condenser ( P.340)
Electric cooling fans
Engine oil level dipstick ( P.337)
Washer fluid tank ( P.341)
■12-volt battery
 P.342
With the engine at operating tempera-
ture and turned off, check the oil level
Engine compartment
Components
A
B
C
D
E
F
G
H
I
J
Checking and adding the engine
oil

3396-3. Do-it-yourself maintenance
6
Maintenance and care
after replacing the engine
●If low quality oil or oil of an inappropriate
viscosity is used
●When driving at high engine speeds or
with a heavy load, when towing, or when
driving while accelera ting or decelerat-
ing frequently
●When leaving the engine idling for a long
time, or when driving frequently through
heavy traffic
■After changing the engine oil
The engine oil maintenance data should be
reset. Perform the following procedures:
1
Press or of the meter control
switches and select .
2
Press or of the meter control
switches, select “Vehicle Settings” and
then press “OK”.
3
Press or of the meter control
switches, select “Oil Maintenance” and
then press and hold “OK”.
4
Select “Yes” and press “OK”.
“Reset Complete” will be displayed when
the reset procedure has been completed.
The coolant level is satisfactory if it is
between the “FULL/F” and “LOW/L”
lines on the reservoir when the hybrid
system is cold.
■Engine coolant reservoir
Reservoir cap
“FULL” line
“LOW” line
If the level is on or below the “LOW” line,
add coolant up to the “FULL” line.
(  P.410)
WARNING
■Used engine oil
●Used engine oil contains potentially
harmful contaminants which may
cause skin disorders such as inflamma-
tion and skin cancer, so care should be
taken to avoid prolonged and
repeated contact. To remove used
engine oil from your skin, wash thor-
oughly with soap and water.
●Dispose of used oil and filters only in a
safe and acceptable manner. Do not
dispose of used oil and filters in house-
hold trash, in sewers or onto the
ground. Call your Lexus dealer, ser-
vice station or auto parts store for
information concerning recycling or
disposal.
●Do not leave used engine oil within the
reach of children.
NOTICE
■To prevent serious engine damage
Check the oil level on a regular basis.
■When replacing the engine oil
●Be careful not to spill engine oil on the
vehicle components.
●Avoid overfilling, or the engine could
be damaged.
●Check the oil level on the dipstick
every time you refill the vehicle.
●Be sure the engine o il filler cap is prop-
erly tightened.
Checking the coolant
A
B
C

3406-3. Do-it-yourself maintenance
■Power control unit coolant reser-
voirReservoir cap
“F” line
“L” line
If the level is on or below the “L” line, add
coolant up to the “F” line.
■Coolant selection
Only use “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.
U.S.A.:
“Toyota Super Long Life Coolant” is a mix-
ture of 50% coolant and 50% deionized
water.
(Minimum temperature: -31°F [-35°C])
Canada:
“Toyota Super Long Life Coolant” is a mix-
ture of 55% coolant and 45% deionized
water.
(Minimum temperature: -44°F [-42°C])
For more details about coolant, contact
your Lexus dealer.
■If the coolant level drops within a short
time of replenishing
Visually check the radiator, hoses,
engine/power control unit coolant reservoir
caps, drain cock and water pump.
If you cannot find a leak, have your Lexus
dealer test the cap and check for leaks in
the cooling system.
Check the radiator and condenser and
clear away any foreign objects.
If either of the above parts is extremely
dirty or you are not sure of their condi-
tion, have your vehicle inspected by
your Lexus dealer.
A
B
C
WARNING
■When the hybrid system is hot
Do not remove the en gine/power control
unit coolant reservoir caps.
The cooling system may be under pres-
sure and may spray hot coolant if the cap
is removed, causing serious injuries, such
as burns.
NOTICE
■When adding coolant
Coolant is neither plain water nor
straight antifreeze. The correct mixture
of water and antifreeze must be used to
provide proper lubrication, corrosion
protection and cooling. Be sure to read
the antifreeze or coolant label.
■If you spill coolant
Be sure to wash it off with water to pre-
vent it from damaging parts or paint.
Checking the radiator and con-
denser
WARNING
■When the hybrid system is hot
Do not touch the radiator or condenser
as they may be hot and cause serious
injuries, such as burns.

3416-3. Do-it-yourself maintenance
6
Maintenance and care
■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.
 Fluid type
FMVSS No.116 DOT 3 or SAE J1703
brake fluid
FMVSS No.116 DOT 4 or SAE J1704
brake fluid
Items
Clean funnel
■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.
If none of the washer do not work or
the “Windshield Washer Fluid Low”
appears on the multi-information dis-
play, the washer tank may be empty.
Add washer fluid.
WARNING
■When the electric cooling fans are
operating
Do not touch the engine compartment.
With the power switch in ON, the elec-
tric cooling fans may automatically start
to run if the air conditioning is on and/or
the coolant temperature is high. Be sure
the power switch is OFF when working
near the electric cooling fans or radiator
grille.
Checking and adding the brake
fluid
WARNING
■When filling the reservoir
Take care as brake fluid can harm your
hands and eyes and damage painted sur-
faces.
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 leve l in the accumulator
is high.
If the reservoir need s frequent refilling,
there may be a serious problem.
Adding the washer fluid