2014 Lexus ES300h warning light

710
ES350_300h_OM_OM33A60U_(U)
6-3. Do-it-yourself maintenance
CAUTION
■When inspecting or replacing tires
Observe the following precautions to prevent accidents.
Failure to do so may cause damage to parts of the drive train as well as dangerous
handling characteristics, which may lead to an accident resulting in death or seri-
ous injury.
●Do not mix tires of different makes, models or tread patterns.
Also, do not mix tires of remarkably different treadwear.
●Do not use tire sizes other than those recommended by Lexus.
●Do not mix differently constructed tires (radial, bias-belted or bias-ply tires).
●Do not mix summer, all season and snow tires.
●Do not use tires that have been used on another vehicle.
Do not use tires if you do not know how they were used previously.
●Do not tow if your vehicle has a compact spare tire (if equipped) installed.
■When initializing the tire pressure warning system
Do not operate the tire pressure warning reset switch without first adjusting the tire
inflation pressure to the specified level. Otherwise, the tire pressure warning light
may not come on even if the tire inflation pressure is low, or it may come on when
the tire inflation pressure is actually normal.
■Caution regarding interference with electronic devices
●Users of any electrical medical device other than implantable cardiac pacemak-
ers, cardiac resynchronization therapy-pacemakers or implantable cardioverter
defibrillators should consult the manufacturer of the device for information about
its operation under the influence of radio waves.
Radio waves could have unexpected effects on the operation of such medical
devices.
●People with implantable cardiac pacemak-
ers, cardiac resynchronization therapy-
pacemakers or implantable cardioverter
defibrillators should not come within 17.7 in.
(450 mm) of the tire pressure warning sys-
tem initiators. The radio waves may affect
the operation of such devices.

ES350_300h_OM_OM33A60U_(U)
7296-3. Do-it-yourself maintenance
6
Maintenance and care
■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

730
ES350_300h_OM_OM33A60U_(U)
6-3. Do-it-yourself maintenance
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

747
ES350_300h_OM_OM33A60U_(U)
7When trouble arises
7-1. Essential informationEmergency flashers................... 748
If your vehicle has to be stopped in an emergency .....749 7-2. Steps to take in an emergency
If your vehicle needs to be towed .................................. 751
If you think something is wrong .................757
Fuel pump shut off system (gasoline vehicles) .................. 758
If a warning light turns on or a warning buzzer sounds ..... 759
If a warning message is displayed ................................. 769
If you have a flat tire................... 792
If the engine will not start (gasoline vehicles) ................. 805
If the hybrid system will not start (hybrid vehicles) ............ 807
If the shift lever cannot be shifted from P .................... 809
If the electronic key does not operate properly ...................... 810
If the 12-volt battery is discharged (gasoline
vehicles) ....................................... 813
If the 12-volt battery is discharged (hybrid
vehicles) ....................................... 817
If your vehicle overheats (gasoline vehicles) ................... 821
If your vehicle overheats (hybrid vehicles) ...................... 824
If the vehicle becomes stuck .............................................828

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ES350_300h_OM_OM33A60U_(U)
7
When trouble arises
7-2. Steps to take in an emergency
If a warning light turns on or a warning buzzer
sounds
The following warning indicates a possible problem in the brake system.
Immediately stop the vehicle in a safe place and contact your Lexus
dealer.
*: Brake system warning buzzer (hybrid vehicles): When there is a possible problem that could affect braking performance, the
warning light will come on and a warning buzzer will sound.
Parking brake engaged warning buzzer:
→ P. 7 76
■Brake system warning light operation (hybrid vehicles)
Although depressing the brake pedal repeatedly may cause the red brake system
warning light to turn on and the buzzer to sound, this does not indicate a malfunction.
Calmly perform the following actions if any of the warning lights comes
on or flashes. If a light comes on or flashes, but then goes off, this does
not necessarily indicate a malfunction in the system. However, if this
continues to occur, have the vehicle inspected by your Lexus dealer.
Stop the vehicle immediately. Continuing to drive the vehicle may
be dangerous.
Warning lightWarning light/Details
(U.S.A.)
(Canada)
Brake system warning light (warning buzzer)*
• Low brake fluid
• Malfunction in the brake booster system
This light also comes on when the parking brake is not released.
If the light turns off after the parking brake is fully released the
system is operating normally.

7607-2. Steps to take in an emergency
ES350_300h_OM_OM33A60U_(U)
The following warning indicates the possibility of damage to the vehicle
that may lead to an accident. Immediately stop the vehicle in a safe place
and contact your Lexus dealer.
Failure to investigate the cause of the following warnings may lead to the
system operating abnormally and possibly cause an accident. Have the
vehicle inspected by your Lexus dealer immediately.
Stop the vehicle immediately.
Warning lightWarning light/Details
Charging system warning lightIndicates a malfunction in the vehicle’s charging system
Have the vehicle inspected by your Lexus dealer immediately.
Warning lightWarning light/Details
(U.S.A.)
(Canada)
Malfunction indicator lamp Indicates a malfunction in:
• The hybrid system (hybrid vehicles);
• The electronic engine control system;
• The electronic throttle control system;
• The electronic automatic transmission control system (gaso-line vehicles); or
• The electronic hybrid transmission control system (hybrid vehicles)
SRS warning lightIndicates a malfunction in:
• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pretensioner system
(U.S.A.)
(Canada)
ABS warning light Indicates a malfunction in:
•The ABS; or
• The brake assist system

7617-2. Steps to take in an emergency
ES350_300h_OM_OM33A60U_(U)
7
When trouble arises
Electric power steering system warning light (warning buzzer)Indicates a malfunction in the EPS (Electric Power Steering)
system
(Flashes)
(If equipped)
Pre-collision system warning light Indicates a malfunction in the pre-collision system
The warning light will operate as follows, even when the system
is not malfunctioning:
• The light will flash quickly when the system is operating. (→ P. 3 1 0 )
• The light will turn on when the pre-collision system is dis- abled. ( →P. 3 1 1 )
• The light will flash when the system cannot temporarily be used. ( →P. 7 7 9 )
Slip indicator
Indicates a malfunction in:
• The VSC system;
•The TRAC system; or
• The hill-start assist control system (hybrid vehicles)
Gasoline vehicles:
The light will flash when the VSC or the TRAC is operating.
Hybrid vehicles:
The light will flash when the ABS, the VSC, the TRAC or the
hill-start assist control system is operating.
(Hybrid
vehicles)
Brake system warning light Indicates a malfunction in:
• The regenerative brake system; or
• The electronically controlled brake system
(If equipped)
Automatic headlight leveling system warning lightIndicates a malfunction in the automatic headlight leveling sys-
tem
Warning lightWarning light/Details

7627-2. Steps to take in an emergency
ES350_300h_OM_OM33A60U_(U)
After taking the specified steps to correct the suspected problem, check
that the warning light goes off.
Follow the correction procedures.
Warning lightWarning light/DetailsCorrection procedure
Open door warning light
(warning buzzer)
*1
Indicates that a door or the
trunk is not fully closed
Check that all the doors and
the trunk are closed.
Low fuel level warning lightIndicates remaining fuel is
approximately 2.6 gal. (9.7 L,
2.1 Imp.gal.)
Refuel the vehicle.
Seat belt reminder light (warn-
ing buzzer)
*2
Warns the driver and/or front
passenger to fasten their seat
belts
Fasten the seat belt.If the front passenger’s seat is
occupied, the front passen-
ger’s seat belt also needs to
be fastened to make the
warning light (warning
buzzer) off.
Master warning lightA buzzer sounds and the
warning light comes on and
flashes to indicate that the
master warning system has
detected a malfunction.
→ P. 76 9