ABS Lexus ES300h 2015 User Guide

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ES350_300h_OM_OM33B36U_(U)
4-5. Using the driving support systems
CAUTION
■Replacing tires
Make sure that all tires are of the specified size, brand, tread pattern and total load
capacity. In addition, make sure that the tires are inflated to the recommended tire
inflation pressure level.
The ABS, TRAC and VSC systems will not function correctly if different tires are
installed on the vehicle.
Contact your Lexus dealer for further information when replacing tires or wheels.
■Handling of tires and the suspension
Using tires with any kind of problem or modifying the suspension will affect the
driving assist systems, and may cause a system to malfunction.

ES350_300h_OM_OM33B36U_(U)
3274-5. Using the driving support systems
4
Driving
CAUTION
■Cautions regarding the assist contents of the system
By means of alarms and brake control, the pre-collision system is intended to assist
the driver in avoiding collisions through the process of LOOK-JUDGE-ACT.
There are limits to the degree of assistance the system can provide, so please keep
in mind the following important points.
●Assisting the driver in watching the road
The pre-collision system is only able to detect obstacles directly in front of the
vehicle, and only within a limited range. It is not a mechanism that allows careless
or inattentive driving, and it is not a system that can assist the driver in low-visibil-
ity conditions. It is still necessary for the driver to pay close attention to the vehi-
cle’s surroundings.
●Assisting the driver in making correct judgment
When attempting to estimate the possibility of a collision, the only data available
to the pre-collision system is that from obstacles it has detected directly in front of
the vehicle. Therefore, it is absolutely necessary for the driver to remain vigilant
and to determine whether or not there is a possibility of collision in any given situ-
ation.
●Assisting the driver in taking action
The pre-collision system’s braking assist feature is designed to help reduce the
severity of a collision, and so only acts when the system has judged that a collision
is unavoidable. This system by itself is not capable of automatically avoiding a col-
lision or bringing the vehicle to a stop safely. For this reason, when encountering a
dangerous situation the driver must take direct and immediate action in order to
ensure the safety of all involved.

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ES350_300h_OM_OM33B36U_(U)
7-3. Do-it-yourself maintenance
■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.
■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.
Brake fluid
XGasoline vehiclesXHybrid vehicles
Fluid typeFMVSS No.116 DOT 3 or SAE J1703 brake fluid
Items Clean funnel
CAUTION
■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.

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ES350_300h_OM_OM33B36U_(U)
7-3. Do-it-yourself maintenance
FuseAmpereCircuit
1WIP-S5Driver support system, windshield wipers
2FA N50Electric cooling fan
3H-LP CLN30No circuit
4ENG W/PMP*130Cooling system
5PTC HTR NO.250PTC heater
6PTC HTR NO.150PTC heater
7HTR50Air conditioning system
8ALT*2140Charging system
DC/DC*1120Hybrid system
9ABS NO.2*230VSC, ABS
10ST/AM2*230Starting system
ABS NO.1*130VSC, ABS
11H-LP-MAIN30H-LP RH-LO, H-LP LH-LO
12ABS MTR NO.2*150VSC, ABS
13ABS NO.1*250VSC, ABS
ABS MTR NO.1*150VSC, ABS
14R/B NO.2*150IGCT MAIN, INV W/PMP
15EPS80Electric power steering
16S-HORN7. 5S-HORN
17DEICER15Windshield wiper de-icer
18HORN10Horn
19TV15
Multi-information display, audio display,
Remote Touch, audio system, gauges and
meters
20AMP NO.230Audio system
21EFI NO.215
Multiport fuel injection system, sequential
multiport fuel system, electronic controlled
transmission

ES350_300h_OM_OM33B36U_(U)
5917-3. Do-it-yourself maintenance
7
Maintenance and care
22EFI NO.3
10*2Multiport fuel injection system, sequential
multiport fuel system, air intake system,
exhaust system
7. 5*1Multiport fuel injection system, sequential
multiport fuel system, air intake system
23INJ7. 5Multiport fuel injection system, sequential
multiport fuel system
24ECU-IG2 NO.37. 5
Multiport fuel injection system, sequential
multiport fuel system, electronic controlled
transmission, power management system,
steering lock system, cruise control system
25IGN15Starting system
26D/L-A M225Po w e r d o o r l o c k s y s t e m
27IG2-MAIN25INJ, IGN
28ALT-S*27. 5Charging system
DC/DC-S*17. 5Hybrid system
29MAYDAY5MAYDAY
30TURN&HAZ15Turn signal lights, emergency flashers
31STRG LOCK10Steering lock system
32AMP30Audio system
33H-LP LH-LO15Left-hand headlight
34H-LP RH-LO15Right-hand headlight
35EFI-MAIN NO.130EFI NO.2, EFI NO.3, fuel system
36SMART5Smart access system with push-button start,
occupant classification system
37ETCS10Multiport fuel injection system, sequential
multiport fuel system
38ABS NO.2*17. 5VSC, ABS
39EFI NO.17. 5
Multiport fuel injection system, sequential
multiport fuel system, electronic controlled
transmission
FuseAmpereCircuit

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ES350_300h_OM_OM33B36U_(U)
7-3. Do-it-yourself maintenance
■Driver’s side instrument panel
FuseAmpereCircuit
1ECU-IG1 NO.210
Main body ECU, audio system, shift lock sys-
tem, outside mirror control ECU, tension
reducer, windshield wipers, heated steering
wheel, multi-information display, audio dis-
play, intuitive parking assist, tire pressure
warning system, moon roof, auto anti-glare
inside rear view mirror, raindrop sensor, rear
sunshade, wireless door lock system, power
trunk opener and closer ECU
2ECU-IG1 NO.110
Electric cooling fan, windshield wiper de-
icer, VSC, ABS, charging system, steering
sensor, electronic controlled transmission,
electric power steering, gateway ECU, elec-
tric tilt and telescopic steering column
3PA N E L N O. 25Clock
4TA I L15Parking lights, side marker lights, license
plate lights
5DOOR F/R20Power window, outside mirror control ECU
6DOOR R/R20Po w e r w i n d o w
7DOOR F/L20Power window, outside mirror control ECU
8DOOR R/L20Po w e r w i n d o w
9H-LP LVL7. 5Automatic headlight leveling system
10WA S H E R10Windshield washer
11A/C-IG17. 5Air conditioning system, PTC heater, gauges
and meters, seat heaters and ventilators

ES350_300h_OM_OM33B36U_(U)
5957-3. Do-it-yourself maintenance
7
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 / H T R & FA N F/ R10Seat heaters and ventilators
19S / H T R & FA N 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-A M120Main body ECU, power door lock system
FuseAmpereCircuit

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ES350_300h_OM_OM33B36U_(U)
7-3. 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. 5VSC, ABS, gateway ECU, smart access sys-
tem with push-button start
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

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ES350_300h_OM_OM33B36U_(U)
7-3. Do-it-yourself maintenance
■Headlight high beamTurn the bulb base counter-
clockwise.
Unplug the connector while
pressing the lock release.
Exchange the light bulb, and
install the bulb base.
Align the 3 tabs on the light bulb
with the mounting, and insert.
Turn and secure the bulb base.
Shake the bulb base gently to
check that it is not loose, turn the
headlights on once and visually
confirm that no light is leaking
through the mounting.
Replacing light bulbs
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ES350_300h_OM_OM33B36U_(U)
6017-3. Do-it-yourself maintenance
7
Maintenance and care
■Headlight low beam (halogen bulb)Turn the bulb base counter-
clockwise.
Unplug the connector while
pressing the lock release.
Exchange the light bulb, and
install the bulb base.
Align the 3 tabs on the light bulb
with the mounting, and insert.
Turn and secure the bulb base.
Shake the bulb base gently to
check that it is not loose, turn the
headlights on once and visually
confirm that no light is leaking
through the mounting.
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