2019 Lexus ES300h coolant level

3897-2. Steps to take in an emergency
7
When trouble arises
3After the hybrid system has cooled
down sufficiently, inspect the hoses
and cooling system for leaks.
Radiator
Cooling fan
If a large amount of coolant leaks, immedi-
ately contact your Lexus dealer.
4The coolant level is satisfactory if it
is between the “F” and “L” lines on
the reservoir.
Reservoir
“F” line
“L” line
Coolant inlet cap
5 Add coolant if necessary.
Water can be used in an emergency if engine coolant is unavailable.
6
Start the hybrid system and turn the
air conditioning system on to check
that the radiator cooling fan oper-
ates and to check for coolant leaks
from the radiator or hoses.
The fan operates when the air conditioning
system is turned on immediately after a
cold start. Confirm that the fan is operating
by checking the fan sound and air flow. If it
is difficult to check these, turn the air con-
ditioning system on and off repeatedly.
(The fan may not oper ate in freezing tem-
peratures.)
7 If the fan is not operating:
Stop the hybrid system immediately
and contact your Lexus dealer.
If the fan is operating:
Have the vehicle inspected at the
nearest Lexus dealer.
If “Hybrid system overheated Out-
put power reduced” is shown on the
multi-information display
1 Stop the vehicle in a safe place.
2 Stop the hybrid system and care-
fully lift the hood.
A
B
A
B
C
D

3907-2. Steps to take in an emergency
3After the hybrid system has cooled
down, inspect the hoses and radia-
tor core (radiator) for any leaks.
Radiator
Cooling fan
If a large amount of coolant leaks, immedi-
ately contact your Lexus dealer.
4The coolant level is satisfactory if it
is between the “FULL” and “LOW”
lines on the reservoir.
Reservoir
“FULL” line
“LOW” line
5
Add coolant if necessary.
Water can be used in an emergency if power control unit coolant is unavailable.
6After stopping the hybrid system
and waiting for 5 minutes or more,
start the hybrid system again and
check if “Hybrid system overheated
Output power reduced” is shown
on the multi-information display.
If the message does not disappear:
Stop the hybrid system and contact your
Lexus dealer.
If the message is not displayed:
The hybrid system temperature has
dropped and the vehicle may be driven
normally.
However, if the message appears again fre-
quently, contact your Lexus dealer.
A
B
A
B
C
WARNING
■When inspecting under the hood of
your vehicle
Observe the following precautions.
Failure to do so may result in serious
injury such as burns.
●If steam is seen coming from under the
hood, do not open the hood until the
steam has subsided. The engine com-
partment may be very hot.

4078-1. Specifications
8
Vehicle specifications
■Traction AA, A, B, C
The traction grades, from highest to
lowest, are AA, A, B and C, and they
represent the tire’s ability to stop on
wet pavement as measured under con-
trolled conditions on specified govern-
ment test surfaces of asphalt and
concrete.
A tire marked C may have poor traction
performance.
Warning: The traction grade assigned to
this tire is based on braking (straight
ahead) traction tests and does not include
cornering (turning) traction.
■Temperature A, B, C
The temperature grades are A (the
highest), B, and C, representing the
tire’s resistance to the generation of
heat and its ability to dissipate heat when tested under controlled condi-
tions on a specified indoor laboratory
test wheel.
Sustained high temperature can cause the
material of the tire to degenerate and
reduce tire life, and excessive temperature
can lead to sudd
en tire failure.
Grade C corresponds to a level of perfor-
mance which all passenger car tires must
meet under the Fede ral Motor Vehicle
Safety Standard No. 109.
Grades B and A represent higher levels of
performance on the laboratory test wheel
than the minimum required by law.
Warning: The temperature grades of a tire
assume that it is properly inflated and not
overloaded.
Excessive speed, unde rinflation, or exces-
sive loading, either separately or in combi-
nation, can cause heat buildup and
possible tire failure.
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation
pressureTire pressure when the vehicle has been parked for three hours or
more, or has not been driven more than 1 mile or 1.5 km under that
condition
Maximum inflation
pressureThe maximum cold inflated pressure to which a tire may be inflated,
shown on the sidewall of the tire
Recommended
inflation pressureCold tire inflation pressure recommended by a manufacturer
Accessory weight
The combined weight (in excess of those standard items which may
be replaced) of hybrid transmission, power steering, power brakes,
power windows, power se ats, radio and heater, to the extent that
these items are available as factory-installed equipment (whether
installed or not)
Curb weight
The weight of a motor vehicle with standard equipment, including the
maximum capacity of fuel, oil and coolant, and if so equipped, air
conditioning and additional weight optional engine

452Alphabetical index
V
Vanity lights.....................................................272
Vanity mirrors ................................................272
Vehicle data recordings ..................................7
Vehicle identification number ................ 394
Vehicle Stability Control (VSC) ........... 236
Ventilators (seat ventilators)..................... 261
VSC (Vehicle Stability Control) ........... 236
W
Warning buzzers
ABS ..................................................................360
Airbags ...........................................................359
Approach warning......................................193
Brake hold.....................................................365
Brake Override System .........................360
Brake system .............................................. 358
Charging system .......................................359
Downshifting ....................................... 144, 145
Drive-Start Control ..................................360
Electric power steering ..........................360
Engine .............................................................359
High coolant temperature ................... 358
Hybrid system overheat.........................365
Hybrid system .............................................359
Intuitive parking assist....................210, 362
Low engine oil pressure.........................359
LTA (Lane Tracing Assist).......... 176, 362
Open door.............................................. 92, 94
Open hood...................................................... 94
Open trunk ...................................................... 94
Open window .................................................121
PKSA (Parking Support Alert) ........... 204
PKSB (Parking Support Brake) ......... 363
Pre-collision braking..................................169
RCD (Rear Camera Detection) ........ 363
RCTA (Rear Cross Traffic Alert) ...... 363
Seat belt ............................................................361
Warning label .................................................. 56
Warning lights...............................................358 ABS ..................................................................360 Brake hold operated indicator .......... 365
Brake Override System ........................ 360
Brake system............................................... 358
Charging system....................................... 359
Drive-Start Control.................................. 360
Electric power steering.......................... 360
High coolant temperature.................... 358
Hybrid system overheat ........................ 365
Intuitive parking assist OFF indicator362
Low engine oil pressure........................ 359
Low fuel level ................................................ 361
LTA indicator ...............................................362
Malfunction indicator lamp .................. 359
Master warning light................................ 365
Parking brake indicator ..........................364
PKSB OFF indicator ................................363
Pre-collision system..................................364
RCD OFF indicator..................................363
RCTA OFF indicator ...............................363
Seat belt reminder light............................ 361
Slip indicator .................................................364
SRS ................................................................... 359
Tire pressure ................................................362
Warning messages ..................................... 368
Washer ............................................................. 155 Checking ....................................................... 322
Preparing and checking before winter.......................................................................... 242
Switch................................................................ 155
Washing and waxing..................................300
Weight Cargo capacity ............................................ 133
Load limits ...................................................... 133
Weight.............................................................394
Wheels ............................................................. 336 Size ................................................................... 399
Window lock switch ...................................... 121
Windows ...........................................................120 Power windows ........................................... 120
Rear window defogger...........................254
Washer ............................................................ 155
Windshield wiper de-icer ........................ 257