stop start LEXUS ES300h 2021 Workshop Manual

3797-2. Steps to take in an emergency
7
When trouble arises
be blocked, or there may be a gap in the
duct. Therefore, perform the following
correction procedure.
• If the air intake vents and filters of the hybrid battery (traction battery) are dirty,
perform the procedure on P.344 to
clean them.
• If the warning message is shown when the air intake vents and filters of the
hybrid battery (traction battery) are not
dirty, have the vehicle inspected by your
Lexus dealer.
 Stop the vehicle in a safe place on a
hard, flat surface.
 Set the parking brake.
 Shift the shift lever to P.
 Stop the hybrid system.
 Turn on the emergency flashers.
( P.358)
NOTICE
■If “High Power Consumption Power
to Climate Temporarily Limited” is
displayed frequently
There is a possible malfunction relating
to the charging system or the 12-volt bat-
tery may be deteriorating. Have the vehi-
cle inspected by your Lexus dealer.
■If “Low Auxiliary Battery See
Owner’s Manual” is displayed fre-
quently
The 12-volt battery may have deterio-
rated. As the battery may discharge in
this state when left unattended, have the
battery inspected by your Lexus dealer.
■If “Maintenance Required For Trac-
tion Battery At Your Dealer” is dis-
played (for vehicles sold in except
Canada)
The hybrid battery (traction battery) is
scheduled to be inspected or replaced.
Have the vehicle inspected by your
Lexus dealer immediately.
●Continuing to drive the vehicle without
having the hybrid battery (traction bat-
tery) inspected will cause the hybrid
system not to start.
●If the hybrid system does not start,
contact your Lexus dealer immedi-
ately.
If you have a flat tire
Your vehicle is equipped with a
spare tire. The flat tire can be
replaced with the spare tire.
For details about tires: P.329
WARNING
■If you have a flat tire
Do not continue driving with a flat tire.
Driving even a short distance with a flat
tire can damage the tire and the wheel
beyond repair, which could result in an
accident.
Before jacking up the vehicle

3917-2. Steps to take in an emergency
7
When trouble arises
In the event that the hybrid system still
cannot be started, contact your Lexus
dealer.
■Stopping the hybrid system
Set the parking brake, shift the shift lever to
P and press the power switch as you nor-
mally do when stopping the hybrid system.
■Electronic key battery
As the above procedure is a temporary
measure, it is recomme nded that the elec-
tronic key battery be replaced immediately
when the battery is depleted. ( P.347)
■Changing power switch modes
Release the brake pedal and press the
power switch in step 3 above.
The hybrid system does not start and modes
will be changed each time the switch is
pressed. ( P.148)If you have a set of jumper (or booster)
cables and a second vehicle with a 12-
volt battery, you can jump start your
vehicle using the following procedure.
1 Confirm that the electronic key is
being carried.
When connecting the jumper (or booster)
cables, depending on the situation, the
alarm may activate and doors locked.
( P.72)
2 Open the hood ( P.319) and
open the fuse box cover.
If the 12-volt battery is dis-
charged
The following procedures may be
used to start the hybrid system if the
12-volt battery is discharged.
You can also call your Lexus dealer
or a qualified repair shop.
Restarting the hybrid system

3937-2. Steps to take in an emergency
7
When trouble arises
6Open and close any of the doors of
your vehicle with the power switch
off.
7 Maintain the engine speed of the
second vehicle and start the hybrid
system of your vehicle by turning
the power switch to ON mode.
8 Make sure the “READY” indicator
comes on. If the indicator does not
come on, contact your Lexus
dealer.
9 Once the vehicle’s hybrid system
has started, remove the jumper
cables in the exact reverse order
from which they were connected.
10 Close the exclusive jump starting
terminal cover, and reinstall the
fuse box cover to its original posi-
tion.
Once the hybrid system starts, have the
vehicle inspected at your Lexus dealer as
soon as possible.
■Starting the hybrid system when the 12-
volt battery is discharged
The hybrid system cannot be started by
push-starting.
■To prevent 12-volt battery discharge
●Turn off the headlights and the audio sys-
tem while the hybrid system is stopped.
●Turn off any unnecessary electrical com-
ponents when the vehicle is running at a
low speed for an extended period, such
as in heavy traffic.
■When the 12-volt battery is removed or
discharged
●Information stored in the ECU is cleared.
When the 12-volt battery is depleted,
have the vehicle inspected at your Lexus
dealer.
●Some systems may require initialization.
(  P.431)
■When removing the 12-volt battery ter-
minals
When the 12-volt battery terminals are
removed, the information stored in the
ECU is cleared. Before removing the 12-
volt battery terminals, contact your Lexus
dealer.
■Charging the 12-volt battery
The electricity stored in the 12-volt battery
will discharge gradually even when the
vehicle is not in use, due to natural dis-
charge and the draining effects of certain
electrical appliances. If the vehicle is left for
a long time, the 12-volt battery may dis-
charge, and the hybrid system may be
unable to start. (The 12-volt battery
recharges automatically while the hybrid
system is operating.)
■When recharging or replacing the 12-
volt battery
●In some cases, it may not be possible to
unlock the doors using the smart access
system with push-button start when the
12-volt battery is discharged. Use the
wireless remote control or the mechani-
cal key to lock or unlock the doors.
●The hybrid system may not start on the
first attempt after the 12-volt battery has
recharged but will start normally after the
second attempt. This is not a malfunction.
●The power switch mode is memorized by
the vehicle. When the 12-volt battery is
reconnected, the system will return to the
mode it was in before the 12-volt battery
was discharged. Before disconnecting
the 12-volt battery, turn the power switch
off.
If you are unsure what mode the power
switch was in before the 12-volt battery
discharged, be especially careful when
reconnecting the 12-volt battery.
■When replacing the 12-volt battery
●Use a 12-volt battery that conforms to
European regulations.
●Use a 12-volt battery that the case size is
same as the previous one (LN2), 20 hour
rate capacity (20HR) is equivalent
(60Ah) or greater, and performance rat-
ing (CCA) is equivalent (345A) or
greater.

3977-2. Steps to take in an emergency
7
When trouble arises
engine coolant is unavailable.
6Start 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 operate 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. 3
After the hybrid system has cooled
down, inspect the hoses and radia-
tor core (radiato r) for any leaks.
Radiator
Cooling fan
If a large amount of coolant leaks, immedi-
ately contact your Lexus dealer.
4 The 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
A
B
A
B
C

3987-2. Steps to take in an emergency
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 over-
heated Output power reduced” is
shown on the multi-information dis-
play.
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 me ssage appears again
frequently, contact your Lexus dealer.
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.
●After the hybrid system has been
turned off, check that the “READY”
indicator are off.
When the hybrid system is operating,
the gasoline engine may automatically
start, or the cooling fan may suddenly
operate even if the gasoline engine
stops. Do not touch or approach rotat-
ing parts such as the fan, which may
lead to fingers or clothing (especially a
tie, a scarf or a muffler) getting caught,
resulting in serious injury.
●Do not loosen the coolant inlet cap or
coolant reservoir caps while the hybrid
system and radiator are hot.
High temperature steam or coolant
could spray out.
NOTICE
■When adding engine/power control
unit coolant
Add coolant slowly after the hybrid sys-
tem has cooled down sufficiently. Adding
cool coolant to a hot hybrid system too
quickly can cause dama ge to the hybrid
system.
■To prevent damage to the cooling
system
Observe the following precautions:
●Avoid contaminating the coolant with
foreign matter (such as sand or dust
etc.).
●Do not use any coolant additive.

3997-2. Steps to take in an emergency
7
When trouble arises
1Stop the hybrid system. 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 hybrid system.
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.
If the vehicle becomes stuck
Carry out the following procedures
if the tires spin or the vehicle
becomes stuck in mud, dirt or snow:
Recovering procedure
WARNING
■When attempting to free a stuck vehi-
cle
If you choose to push the vehicle back
and forth to free it, make sure the sur-
rounding area is clear to avoid striking
other vehicles, obje cts or people. The
vehicle may also lunge forward or lunge
back suddenly as it becomes free. Use
extreme caution.
■When shifting the shift lever
Be careful not to shif t the shift lever with
the accelerator pedal depressed.
This may lead to un expected rapid accel-
eration of the vehicle that may cause an
accident resulting in death or serious
injury.
NOTICE
■To avoid damaging the transmission
and other components
●Avoid spinning the front wheels and
depressing the accelerator pedal
more than necessary.
●If the vehicle remains stuck even after
these procedures are performed, the
vehicle may require towing to be
freed.

447What to do if... (Troubleshooting)
In this case, the hybrid system can be
started in a temporary way. ( P.390)
Is the 12-volt battery discharged?
( P.391)
 Is the power switch in ON mode?
If you cannot release the shift lever
by depressing the brake pedal with
the power switch in ON mode
( P.153)
 It is locked automatically to prevent
theft of the vehicle. ( P.146)
 Is the window lock switch pressed?
The power window except for the one at
the driver’s seat cannot be operated if the
window lock switch is pressed. ( P.131)
 The auto power off function will be
operated if the vehicle is left in
ACCESSORY or ON mode
(hybrid system is not operating) for
a period of time. ( P.149) 
The seat belt reminder light is flash-
ing
Are the driver and the passengers wearing
the seat belts? ( P.368)
 The parking brake indicator is on
Is the parking brake released? ( P.157)
Depending on the situation, other
types of warning buzzer may also
sound. ( P.365, 375)
 Did anyone inside the vehicle open
a door during setting the alarm?
The sensor detects it and the alarm sounds.
( P.71)
To stop the alarm, turn the power
switch to ON mode, or start the hybrid
system.
 Is the message displayed on the
multi-information display?
Check the message on the multi-informa-
tion display. ( P.375)
 When a warning light turns on or a
warning message is displayed, refer
to P.365, 375.
The shift lever cannot be shifted
from P even if you depress the
brake pedal
The steering wheel cannot be
turned after the hybrid system is
stopped
The windows do not open or
close by operating the power
window switches
The power switch is turned off
automatically
A warning buzzer sounds during
driving
An alarm is activated and the
horn sounds
A warning buzzer sounds when
leaving the vehicle
A warning light turns on or a
warning message is displayed

Alphabetical index451
Distance until next engine oil change .... 80
Do-it-yourself maintenance ......................313
Door courtesy lights ....................................277
Door lockDoors.................................................................. 101
Smart access system with push-button start ....................................................................112
Wireless remote control........................... 99
Doors ................................................................... 101 Automatic door lock ing and unlocking
system ........................................................... 104
Door glasses ................................................. 130
Door lock.......................................................... 101
Open door warning buzzer ....... 102, 104
Outside rear view mirrors ...................... 127
Rear door child-protectors ................... 104
Drive distance .................................................. 82
Drive info 1/Drive info 2 .............................. 82
Driver’s seat position memory .................120 Driving position memory.........................120
Memory recall function ............................ 122
Drive-start control ........................................ 137
Driving................................................................136 Break-in tips ................................................... 137
Correct driving posture .............................23
Driving Mode Select switch................... 213
Hybrid vehicle driving tips .................... 252
Procedures .....................................................136
Winter drive tips......................................... 254
Driving information display ........................ 82
Driving Mode Select switch......................213
Driving range ................................................... 82
Driving support system information display ............................................................................. 83
Dynamic radar cruise control with full- speed range................................................. 198Warning message.....................................206
E
ECB (Electronically Controlled Brake Sys- tem) ................................................................ 248
Eco drive mode ..............................................213 EDR (Event data recorder) ............................7
Elapsed time ..................................................... 82
Electric motor (traction motor) .................. 61
Electric Power Steering (EPS)
Function ..........................................................248
Warning light ............................................... 367
Electronically Controlled Brake System (ECB) ............................................................ 248
Electronic key .................................................. 98 Battery-saving function.............................. 113
If the electronic key does not operate properly ...................................................... 389
Replacing the battery ............................... 347
Emergency, in case of If a warning buzzer sounds.................. 365
If a warning light turns on...................... 365
If a warning message is displayed .....375
If the 12-volt battery is discharged ..... 391
If the electronic key does not operate properly ...................................................... 389
If the fuel filler do or cannot be opened
......................................................................... 388
If the hybrid system will not start ....... 386
If the vehicle is trapped in rising water ......................................................................... 359
If you have a flat tire .................................. 379
If you lose your keys ................................ 388
If you think something is wrong..........364
If your vehicle becomes stuck ............ 399
If your vehicle has to be stopped in an emergency ................................................ 358
If your vehicle needs to be towed ...... 361
If your vehicle overheats ....................... 396
Emergency flashers ....................................358
Energy monitor ............................................... 90
Engine ACCESSORY mode............................... 148
Compartment................................................321
Hood ................................................................. 319
How to start the hybrid system............ 145
Identification number .............................. 403
If the hybrid system will not start ....... 386

Alphabetical index453
...........................................................................163
Automatic High Beam system..............164
Light switch ...................................................... 161
Replacing light bulbs................................ 352
Headlights aim ................................................351
Head restraints ...............................................123
Head-up display.............................................. 86 Driving information display area........... 86
Driving support system display area ..88
HUD (Head-up display) switch............ 87
Hybrid System Indicator ........................... 89
Navigation system-linked display ........ 86
Pop-up display...............................................88
Settings .............................................................. 87
Heated steering wheel .............................. 273
Heaters Air conditioning system.......................... 265
Heated steering wheel............................ 273
Outside rear view mirrors .................... 266
Seat heaters .................................................. 273
High mounted stoplight Replacing light bulbs................................ 352
High-voltage components ......................... 64
Hill-start assist control ............................... 248
Hood ...................................................................319 Open .................................................................319
Hooks Cargo hooks................................................ 283
Coat hooks ................................................... 295
Grocery bag hooks ................................. 283
Retaining hooks (floor mat)......................22
Horn .................................................................... 126
HUD (Head-up display) switch................ 87
Hybrid battery (traction battery) Location............................................................. 64
Specification .................................................404
Warning message........................................ 67
Hybrid battery (traction battery) air vents ..............................................................................67
Hybrid system .................................................... 61 Acoustic vehicle alerting system .......... 63
Emergency shut off system ..................... 67 Energy monitor/consumption screen90
EV drive mode............................................. 150
High voltage components ....................... 64
Hybrid system precautions...................... 64
Hybrid vehicle driving tips .................... 252
If the hybrid system will not start ....... 386
Overheating ................................................. 397
Power (ignition) switch ............................ 145
Regenerative braking ................................. 62
Starting the hybrid system ...................... 145
Hybrid System Indicator...................... 79, 89
Hybrid transmission......................................152 Paddle shift switches .......................154, 155
S mode ............................................................. 155
I
I/M test ..............................................................316
IdentificationEngine............................................................. 403
Vehicle ............................................................402
Ignition switch (power switch) .................145
Auto power off function........................... 149
Changing the power switch modes . 148
If your vehicle has to be stopped in an emergency ................................................ 358
Starting the hybrid system ...................... 145
Immobilizer system........................................ 69
Indicators ........................................................... 75
Initialization Items to initialize ...........................................431
Maintenance.......................................312, 323
Power windows ........................................... 130
Tire pressure warning system .............335
Inside rear view mirror ................................126
Instrument panel light control ................... 80
Interior lights...................................................277
Intuitive parking assist........................215, 216 Function ............................................................216
Warning message ...................................... 218

456Alphabetical index
Parking assist sensors (intuitive parking assist) ............................................................... 216
Parking brake.................................................. 157 Operation........................................................ 157
Parking brake engaged warning buzzer.......................................................................... 158
Warning light ................................................. 371
Warning message...................................... 158
Parking lights .................................................... 161 Light switch ...................................................... 161
Parking Support Brake function (rear- crossing vehicles) ........................... 229, 241Function ............................................................ 241
Parking Support Brake function (rear pedestrians) ..................................... 229, 245Function .......................................................... 245
Parking Support Brake function (static objects) ..............................................229, 235Function .......................................................... 235
PCS (Pre-Collision System) .................... 180 Function ........................................................... 180
PCS OFF switch ..........................................182
Warning light ................................................. 371
Personal lights................................................277
PKSA (Parking Support Alert) ................215
PKSB (Parking Support Brake)............. 229 Warning message..................................... 234
Power control unit.......................................... 64
Power control unit coolant ...................... 323 Capacity .........................................................405
Checking ....................................................... 323
Preparing and checking before winter......................................................................... 254
Power easy access system ........................120
Power outlet .................................................. 284
Power steering (Elect ric power steering
system).......................................................... 248 Warning light ............................................... 367
Power switch ...................................................145 Auto power off function ...........................149
Changing the power switch modes . 148
If your vehicle has to be stopped in an emergency ................................................ 358
Starting the hybrid system ...................... 145
Power trunk lid .............................................. 105
Power windows ............................................. 130 Door lock linked window operation ... 131
Jam protection function ............................. 131
Operation ....................................................... 130
Window lock switch.................................... 131
Pre-Collision System (PCS) .................... 180 Function ........................................................... 180
PCS OFF switch ......................................... 182
Warning light .................................................371
R
Radar cruise control (dynamic radar cruise control with full-speed range).............. 198
Radiator ........................................................... 324
RCD (Rear Camera Detection) .............215 Function .......................................................... 227
Warning message .....................................228
RCTA (Rear Cross Traffic Alert) 215, 222
RCTA Function .......................................................... 222
Warning message ..................................... 223
Rear Cross Traffic Alert (RCTA) 215, 222
Rear door sunshades ................................. 293
Rear seats Head restraints..............................................123
Rear side marker lights ................................ 161 Light switch ...................................................... 161
Rear sunshades ............................................ 293
Rear turn signal lights ..................................156 Replacing light bulbs ................................352
Turn signal lever .......................................... 156
Rear view mirror Inside rear view mirror ..............................126
Outside rear view mirrors....................... 127
Rear window defogger ............................. 266
Refueling ........................................................... 172 Capacity ........................................................ 403
Fuel types ...................................................... 403
If the fuel filler do or cannot be opened