2014 Lexus ES300h warning lights

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

759
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.

7667-2. Steps to take in an emergency
ES350_300h_OM_OM33A60U_(U)
CAUTION
■If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediately and contact your Lexus dealer. The
vehicle will become extremely unstable during braking, and the ABS system may
fail, which could cause an accident resulting in death or serious injury.
■When the electric power steering system warning light comes on
The steering wheel may become extremely heavy.
If the steering wheel becomes heavier than usual when operating, hold firmly and
operate using more force than usual.
■If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could cause a loss of
vehicle control and result in death or serious injury.
●Stop your vehicle in a safe place as soon as possible. Adjust the tire inflation pres-
sure immediately.
●If the tire pressure warning light comes on even after tire inflation pressure adjust-
ment, it is probable that you have a flat tire. Check the tires. If a tire is flat, change
it with the spare tire and have the flat tire repaired by the nearest Lexus dealer.
●Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you could
lose control of the steering wheel or the brakes.
■If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.

7807-2. Steps to take in an emergency
ES350_300h_OM_OM33A60U_(U)
Indicates that the Blind
Spot Monitor sensors or
the surrounding area on
the bumper is dirty or
covered with ice
Clean the sensor and its
surrounding area on the
bumper.
Indicates that the hybrid
system has overheatedThis message may be
displayed when driving
under severe operating
conditions. (For exam-
ple, when driving up a
long steep hill.)
Stop and check.
(→ P. 8 2 4 )
Indicates that remaining
fuel is approximately 2.6
gal. (9.7 L, 2.1 Imp.gal.) or
less
Refuel the vehicle.
Indicates that the “START
STOP ENGINE”
<“POWER”> switch is
turned off or turned to
ACCESSORY mode and
the driver’s door is
opened while the lights
are turned on
Turn the lights off.
Indicates that the driver’s
door was opened with the
shift position in any posi-
tion other than P
Shift the shift position to P.
Warning messageDetailsCorrection procedure
(If equipped)
(Hybrid vehicles)
(Flashes)
(Flashes)
(Hybrid vehicles)

7827-2. Steps to take in an emergency
ES350_300h_OM_OM33A60U_(U)
A warning message is shown on the multi-information display. After taking
the specified steps to correct the suspected problem, check that the
warning message goes off.
Follow the correction procedures.
Warning messageDetailsCorrection procedure
Indicates that the Auto-
matic High Beam switch
is pressed while the head-
lights are in low beam.Turn the high beam on
and press the Automatic
High Beam switch again.
Indicates that the washer
fluid level is lowAdd washer fluid.
Indicates that all mainte-
nance according to the
driven distance on the
maintenance schedule
*
should be performed
soon.If necessary, perform
maintenance.
Comes on approxi-
mately 4500 miles
(7200 km) after the
maintenance data has
been reset.
(If equipped)
(U.S.A. only)

899Alphabetical index
ES350_300h_OM_OM33A60U_(U)
Armrest door ......................................... 634
Assist grip ................................................ 636
Audio input....................................... 429, 571
Audio system
*........................... 382, 500
Audio input................................. 429, 571
AUX port .................................... 429, 571
Bluetooth
® audio....................431, 548
CD player ...................................400, 512
iPod .................................................. 411, 529
MP3/WMA disc ......................401, 521
Optimal use ............................. 446, 569
Portable music player ........... 429, 571
Radio .......................................... 385, 503
Steering wheel audio
switch....................................... 448, 573
USB memory ............................419, 539
Automatic air conditioning system
*..................................... 353, 365
Automatic headlight leveling system ......................................................231
Automatic High Beam ....................... 232
Automatic light control system .................................................... 228
Automatic transmission ...................... 218
If the shift lever cannot be shifted from P ........... 809
AUX port....................................... 429, 571
Auxiliary box ............................................619 Back-up lights
Replacing light bulbs ....................... 744
Wattage .................................................846
Battery (12-volt battery) .........693, 698 If the 12-volt battery
is discharged ........................... 813, 817
Preparing and checking before
winter....................................................330
Warning light ....................................... 760
Battery (traction battery) ...................... 76
Bluetooth
®*
Audio system ............................ 431, 548
Hands-free system (for cellular phone) ............ 451, 576
Brake
Fluid .......................................................... 692
Parking brake ...................................... 226
Warning light .............................759, 761
Brake assist ............................................. 302
Break-in tips ............................................. 186
Brightness control
Instrument panel light control ........ 96
BSM (Blind Spot Monitor) ................. 317
B
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.

901Alphabetical index
ES350_300h_OM_OM33A60U_(U)
Cup holders ............................................. 618
Curtain shield airbags ........................... 39
Customizable features ....................... 862
Daytime running light system .......... 230
Defogger
*
Front windshield ................................ 369
Outside rear view mirrors .............378
Rear window ........................................378
Dimension ............................................... 832
Dinghy towing........................................ 200
Display Dynamic radar cruise control...... 252
LDA (Lane Departure Alert) .......269
Multi-information display ................ 100
Trip information ..................................... 101
Warning message .............................769
Display Audio system .........................338 Display settings ...................................343
Setup menu ...........................................345
Do-it-yourself maintenance ............. 673
Door courtesy lights Location ..................................................... 611
Wattage ................................................. 846
Doors
Automatic door locking and unlocking system.................... 144
Door glasses ..........................................174
Door lock .................................................142
Open door warning buzzer.......... 129
Open door warning light............... 762
Outside rear view mirrors ................ 171
Rear door child-protector.............. 143 Driver’s seat position memory.......... 156
Driving position memory................. 157
Memory recall function ....................159
Power easy access system .............156
Driving Break-in tips .......................................... 186
Correct driving posture .................... 30
Driving mode select switch ......... 300
Hybrid vehicle driving tips .............327
Procedures .............................................184
Winter drive tips ................................330
Dynamic radar cruise control
Function .................................................. 252
Warning message................... 771, 778
Eco drive mode..................................... 300
Eco Driving Indicator ........................... 107
EDR (Event data recorder).....................11
Electric motor (traction motor).......... 72
Electric Power Steering (EPS) Function ..................................................303
Warning light ......................................... 761
Warning message.............................. 772
Electronic key .......................................... 122 Battery-saving function ......................131
If the electronic key does not operate properly ............................. 810
Replacing the battery ........................ 719
D
E
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.