2019 Lexus ES350 radiator cap

3106-3. Do-it-yourself maintenance
Fuse box (P.331)
Engine oil filler cap ( P.311)
Engine oil level dipstick ( P.310)
Battery ( P.314)
Brake fluid reservoir ( P.313)
Radiator ( P.313)
Electric cooling fan
Condenser ( P.313)
Engine coolant reservoir ( P.312)
Washer fluid tank ( P.315)
With the engine at operating tempera-
ture and turned off, check the oil level on the dipstick.
■Checking the engine oil
1 Park the vehicle on level ground.
After warming up the engine and turning it
Engine compartment
Components
A
B
C
D
E
F
G
H
I
J
Checking and adding the engine
oil

3136-3. Do-it-yourself maintenance
6
Maintenance and care
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 engine coolant, con-
tact your Lexus dealer.
■If the coolant level drops within a short
time of replenishing
Visually check the radiator, hoses, engine
coolant reservoir cap, 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.
■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 items.
 Fluid type
FMVSS No.116 DOT 3 or SAE J1703
brake fluid
FMVSS No.116 DOT 4 or SAE J1704
brake fluid
Item
Clean funnel
WARNING
■When the engine is hot
Do not remove the engine coolant reser-
voir cap or the radiator cap. ( P.379)
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 damagi ng parts or paint.
Checking the radiator and con-
denser
WARNING
■When the engine is hot
Do not touch the radiator or condenser
as they may be hot and cause serious
injuries, such as burns.
Checking and adding the brake
fluid

3787-2. Steps to take in an emergency
radiator 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 “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 coolant is unavailable.
6
Start the engine 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 engine immediately and
contact your Lexus dealer.
If the fan is operating:
Have the vehicle inspected at the
nearest Lexus dealer.
A
B
A
B
C
D
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.

3797-2. Steps to take in an emergency
7
When trouble arises
1Stop the engine. Set the parking
brake and shift the shift lever to P.
2 Remove the mud, snow or sand
from around the front wheels.
3 Place wood, stones or some other
material under the front wheels to
help provide traction.
4 Restart the engine.
5 Shift the shift lever to D or R and
release the parking brake. Then,
while exercising caution, depress
the accelerator pedal.
■When it is difficult to free the vehicle
Press the switch to turn off TRAC.
WARNING
●Keep hands and clothing (especially a
tie, a scarf or a muffler) away from the
fan and belts. Failure to do so may
cause the hands or clothing to be
caught, resulting in serious injury.
●While the engine and radiator are hot,
do not loosen or remove the coolant
inlet cap or coolant reservoir cap.
High temperature steam or coolant
could spray out.
NOTICE
■When adding engine coolant
Add coolant slowly after the engine has
cooled down sufficiently. Adding cool
coolant to a hot engine too quickly can
cause damage to the engine.
■To prevent damage to the cooling sys-
tem
Observe the following precautions:
●Avoid contaminating the coolant with
foreign matter (such as sand or dust
etc.).
●Do not use any coolant additive.
If the vehicle becomes stuck
Carry out the following proce-
dures if the tires spin or the vehicle
becomes stuck in mud, dirt or snow:
Recovering procedure

436Alphabetical index
Parking assist sensors (intuitive parking assist) ............................................................. 205
Parking brake..................................................146 Operation........................................................146
Parking brake engaged warning buzzer........................................................................... 147
Warning light ............................................... 354
Warning message....................................... 147
Parking lights .................................................. 150 Light switch .................................................... 150
Parking Support Brake function (rear- crossing vehicles) ........................... 218, 229
Parking Support Brake function (rear pedestrians) ...................................... 218, 233Function .......................................................... 233
Parking Support Brake function (static objects) ............................................... 218, 224Function .......................................................... 224
PCS (Pre-Collision System) .....................169 Function ............................................................169
PCS OFF switch ............................................171
Warning light ............................................... 354
Personal lights............................................... 262
PKSA (Parking Support Alert) .............. 204
PKSB (Parking Support Brake)...............218 Warning message......................................222
Power easy access system ....................... 108
Power outlet .................................................. 269
Power steering (Elect ric power steering
system).......................................................... 236 Warning light .............................................. 350
Power trunk lid ................................................ 93
Power windows ............................................... 118 Door lock linked window operation... 119
Jam protection function............................. 119
Operation......................................................... 118
Window lock switch ................................... 119
Pre-Collision System (PCS) .....................169 Function ............................................................169
PCS OFF switch ............................................171
Warning light ............................................... 354R
Radar cruise control (dynamic radar cruise control with full-speed range)...............187
Radiator .............................................................313
RCD (Rear Camera Detection) .............215 Function ........................................................... 215
Warning message .......................................216
RCTA (Rear Cross Traffic Alert) ............ 211
RCTA Function ............................................................. 211
Warning message ....................................... 212
Rear Cross Traffic Alert (RCTA) ............ 211
Rear door sunshades ................................. 278
Rear seats Head restraints................................................. 111
Rear side marker lights .............................. 150 Light switch .................................................... 150
Rear sunshades ............................................ 278
Rear turn signal lights ..................................145 Replacing light bulbs ................................335
Turn signal lever .......................................... 145
Rear view mirror Inside rear view mirror ............................... 114
Outside rear view mirrors........................ 115
Rear window defogger ............................. 252
Refueling ............................................................ 161 Capacity ........................................................ 383
Fuel types ...................................................... 383
If the fuel filler do or cannot be opened
............................................................................371
Opening the fuel tank cap ....................... 161
Remote Touch .............................................. 244
Replacing Electronic key battery ............................. 330
Fuses.................................................................. 331
Light bulbs .....................................................335
Tires ..................................................................362
Resetting the message indicating mainte- nance is required ....................................... 301
Rev indicator .................................................... 69
Rev peak............................................................. 69