Page 718 of 908
718
ES350 300h_OM_OM33A01U_(U)
6-3. Do-it-yourself maintenance
*1:Hybrid vehicles
*2: Gasoline vehicles
40
A/F*220Air intake system
EFI-MAIN
NO.2
*120Fuel system, air intake system, exhaust sys-
tem
41AM27. 5Power management system, smart access
system with push-button start
42PA N E L10
Switch illumination, audio system, multi-infor-
mation display, audio display, shift lever light,
glove box light, console box light, Remote
Touch, intuitive parking assist switch illumina-
tion
43DOME7. 5Clock, footwell lights, vanity lights, ornament
lights, personal lights, door courtesy lights
44ECU-B NO.110
Smart access system with push-button start,
main body ECU, steering sensor, gauges and
meters, gateway ECU, electric tilt and tele-
scopic steering column, power seats, over-
head module, outside mirror control ECU,
power trunk opener and closer ECU
45SPARE25Spare fuse
46SPARE30Spare fuse
FuseAmpereCircuit
Page 721 of 908

ES350 300h_OM_OM33A01U_(U)
7216-3. Do-it-yourself maintenance
6
Maintenance and care
12WIPER25Windshield wipers
13BKUP LP7. 5
Multiport fuel injection system, sequential
multiport fuel system, electronic controlled
transmission, audio system, navigation sys-
tem, back-up lights
14FUEL OPN10Fuel filler door opener
15EPS-IG110Electric power steering
16P/O U T L E T R R15Po w e r o u t l e t
17RADIO-ACC5Audio system, Remote Touch, multi-informa-
tion display, audio display, navigation system
18S/HTR&FAN F/R10Seat heaters and ventilators
19S/HTR&FAN F/L10Seat heaters and ventilators
20OBD7. 5On-Board diagnosis system
21ECU-B NO.210
Power window master switch, air condition-
ing system, smart access system with push-
button start, tire pressure warning system,
rear sunshade
22STRG HTR10Heated steering wheel
23PTL25Power trunk opener and closer ECU
24STOP7. 5
Power management system, multiport fuel
injection system, sequential multiport fuel
system, VSC, ABS, electronic controlled
transmission, driver support system, engine
room junction block assy, tail lights, high
mounted stoplight, smart access system with
push-button start, shift lock system
25P/ S E AT F/ L30Po w e r s e a t s
26A/C-B7. 5Air conditioning system
27S/ROOF10Moon roof
28P/ S E AT F/ R30Po w e r s e a t s
29PSB30Pre-collision seat belt
30D/L-AM120Main body ECU
FuseAmpereCircuit
Page 722 of 908
722
ES350 300h_OM_OM33A01U_(U)
6-3. Do-it-yourself maintenance
31TI&TE20Electric tilt and telescopic steering column
32A/B10Occupant classification system, SRS airbag
system
33ECU-IG2 NO.17. 5Gauges and meters
34ECU-IG2 NO.27. 5
VSC, ABS, gateway ECU, smart access sys-
tem with push-button start, SRS airbag sys-
tem
35CIG& P/OUTLET15Po w e r o u t l e t
36ECU-ACC7. 5Main body ECU, gauges and meters, outside
rear view mirrors
37ECU-IG1 NO.310
Intuitive parking assist, driver support sys-
tem, skid control buzzer, Blind Spot Monitor,
radar sensor
38S/HTR RR20No circuit
FuseAmpereCircuit
Page 739 of 908

739
ES350 300h_OM_OM33A01U_(U)
7When trouble arises
7-1. Essential informationEmergency flashers................... 740
If your vehicle has to be stopped in an emergency ...... 741 7-2. Steps to take in an emergency
If your vehicle needs to be towed ................................. 743
If you think something is wrong ................. 749
Fuel pump shut off system (gasoline vehicles) .................. 750
If a warning light turns on or a warning buzzer sounds ....... 751
If a warning message is displayed .................................. 761
If you have a flat tire................... 784
If the engine will not start (gasoline vehicles) ...................797
If the hybrid system will not start (hybrid vehicles) ............ 799
If the shift lever cannot be shifted from P ...................... 801
If the electronic key does not operate properly .....................802
If the 12-volt battery is discharged (gasoline
vehicles) ..................................... 805
If the 12-volt battery is discharged (hybrid
vehicles) ..................................... 809
If your vehicle overheats (gasoline vehicles) ................... 813
If your vehicle overheats (hybrid vehicles) ....................... 816
If the vehicle becomes stuck .............................................820
Page 741 of 908

741
ES350 300h_OM_OM33A01U_(U)
7
When trouble arises
7-1. Essential information
If your vehicle has to be stopped in an emergency
Steadily step on the brake pedal with both feet and firmly depress it.
Do not pump the brake pedal repeatedly as this will increase the effort required to
slow the vehicle.
Shift the shift lever to N.
If the shift lever is shifted to N
After slowing down, stop the vehicle in a safe place by the road.
Stop the engine .
If the shift lever cannot be shifted to N
Keep depressing the brake pedal wi th both feet to reduce vehicle
speed as much as possible.
Gasoline vehicles: To stop the
engine, press and hold the
“START STOP ENGINE” switch
for 2 consecutive seconds or
more, or press it briefly 3 times or
more in succession.
Hybrid vehicles: To stop the
hybrid system, press and hold the
“POWER” switch for 2 consecu-
tive seconds or more, or press it
briefly 3 times or more in succes-
sion.
Stop the vehicle in a safe place by the road.
Only in an emergency, such as if it becomes impossible to stop the vehi-
cle in the normal way, stop the vehicle using the following procedure:
1
2
3
4
3
Press and hold for 2 seconds or more
or press briefly 3 times or more
4
Press and hold for 2 seconds or more
or press briefly 3 times or more
5
Page 747 of 908
7477-2. Steps to take in an emergency
ES350 300h_OM_OM33A01U_(U)
7
When trouble arises
If your Lexus is transported by a flat
bed truck, it should be tied down at
the locations shown in the illustra-
tion.
If you use chains or cables to tie
down your vehicle, the angles
shaded in black must be 45 .
Do not overly tighten the tie downs
or the vehicle may be damaged.
■Before emergency towing Release the parking brake.
Shift the shift lever to N.
Gasoline vehicles: Turn the “START STOP ENGINE” switch to ACCESSORY
(engine off) or IGNITION ON (engine running) mode.
Hybrid vehicles: Turn the “POWER” swit ch to ACCESSORY (hybrid system off)
or ON (hybrid system operating) mode.
Using a flat bed truck
1
2
3
Page 748 of 908

7487-2. Steps to take in an emergency
ES350 300h_OM_OM33A01U_(U)
CAUTION
Observe the following precautions.
Failure to do so may result in death or serious injury.
■Caution while towing
●Use extreme caution when towing the vehicle.
Avoid sudden starts or erratic driving ma neuvers which place excessive stress on
the emergency towing eyelet and the cable or chain. Always be cautious of the
surroundings and other vehicles while towing.
●Gasoline vehicles: If the engine is not running, the power assist for the brakes and
steering will not function, making steering and braking more difficult.
Hybrid vehicles: If the hybrid system is off, the power assist for the brakes and
steering will not function, making steering and braking more difficult.
■Installing towing eyelet to the vehicle
Make sure that towing eyel et is installed securely.
If not securely installed, towing eyelet may come loose during towing.
NOTICE
■To prevent causing serious damage to the transmission when towing using a
wheel-lift type truck
Never tow this vehicle from the rear with the front wheels on the ground.
■To prevent damage to the vehicle when towing using a wheel-lift type truck
When raising the vehicle, ensure adequate ground clearance for towing at the
opposite end of the raised vehicle. Without adequate clearance, the vehicle could
be damaged while being towed.
■To prevent body damage when to wing with a sling-type truck
Do not tow with a sling-type truck, either from the front or rear.
Page 750 of 908
750
ES350 300h_OM_OM33A01U_(U)
7-2. Steps to take in an emergency
Fuel pump shut off system (gasoline vehicles)
Follow the procedure below to restart the engine after the system is acti-
vated.
Turn the “START STOP ENGINE” switch to ACCESSORY mode or
turn it off.
Restart the engine.
To minimize the risk of fuel leakage when the engine stalls or when an
airbag inflates upon collision, the fuel pump shut off system stops the
supply of fuel to the engine.
NOTICE
■Before starting the engine
Inspect the ground under the vehicle.
If you find that fuel has leaked onto th e ground, the fuel system has been damaged
and is in need of repair. Do not restart the engine.
1
2