Page 693 of 784
6938-2. Steps to take in an emergency
ES350_300h_OM_OM33B99U_(U)
8
When trouble arises
Start the hybrid system and turn the air conditioning system on to
check that the radiator cooling fa ns operate and to check for coolant
leaks from the radiator or hoses.
The fans operate when the air conditioning system is turned on immediately
after a cold start. Confirm that the fans are operating by checking the fan
sound and air flow. If it is difficult to check these, turn the air conditioning sys-
tem on and off repeatedly. (The fans may not operate in freezing tempera-
tures.)
If the fans are not operating:
Stop the hybrid system immediately and contact your Lexus dealer.
If the fans are operating:
Have the vehicle inspected at the nearest Lexus dealer.
6
7
Page 695 of 784

6958-2. Steps to take in an emergency
ES350_300h_OM_OM33B99U_(U)
8
When trouble arises
Start the hybrid system and check for the multi-information display.
If the message does not disappear:
Stop the hybrid system and contact your Lexus dealer.
If the message is not displayed:
Have the vehicle inspected at the nearest Lexus dealer.
CAUTION
■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 compartment may be very hot.
●After the hybrid system has been turned off, check that the indicator on the
“POWER” switch and the “READY” indicator are off.
When the hybrid system is operating, the gasoline engine may automatically
start, or the cooling fan may suddenly oper ate even if the gasoline engine stops.
Do not touch or approach rotating parts such as the fan, which may lead to fin-
gers or clothing (especially a tie, a scarf or a muffler) getting caught, resulting in
serious injury.
●Do not loosen the radiator cap or the coolant reservoir cap while the hybrid sys-
tem and radiator are hot. High temper ature steam or coolant could spray out.
6
Page 705 of 784
ES350_300h_OM_OM33B99U_(U)
7059-1. Specifications
9
Vehicle specifications
*: The engine oil capacity is a reference quantity to be used when changing the
engine oil. Warm up and turn off the en gine (gasoline vehicles) or hybrid system
(hybrid vehicles), wait more than 5 minute s, and check the oil level on the dipstick.
Lubrication system
Oil capacity
(Drain and refill reference
*)
With filterGasoline vehicles
6.4 qt. (6.1 L, 5.4 Imp.qt.)
Hybrid vehicles
4.6 qt. (4.4 L, 3.9 Imp.qt.)
Without filterGasoline vehicles
6.0 qt. (5.7 L, 5.0 Imp.qt.)
Hybrid vehicles
4.2 qt. (4.0 L, 3.5 Imp.qt.)
Page 709 of 784
ES350_300h_OM_OM33B99U_(U)
7099-1. Specifications
9
Vehicle specifications
Gasoline vehicles
Hybrid vehicles
Electrical system
12-volt battery
Specific gravity reading
at 68F (20 C): 1.250 — 1.290 Fully charged
1.160 — 1.200 Half charged
1.060 — 1.100 Discharged
Charging rates
Quick charge
Slow charge15 A max.
5 A max.
12-volt battery
Open voltage at 68 F
(20 C):12.5 V or higher: Fully charged
12.2 — 12.4 V: Half charged
12.0 V or lower: Discharged
(Voltage is checked 20 minutes after the hybrid sys-
tem and all lights are turned off.)
Charging rates5 A max.
Page 764 of 784
764What to do if... (Troubleshooting)
ES350_300h_OM_OM33B99U_(U)●
The seat belt remind
er light is flashing
Are the driver and the front passenger wearing the seat belts?
( P. 6 2 9 )
●The parking brake indicator is on
Is the parking brake released? ( P. 231)
Depending on the situation, ot her types of warning buzzer may
also sound. ( P. 626, 636)
●Did anyone inside the vehicle op en a door during setting the
alarm?
The sensor detects it and the alarm sounds. ( P. 8 8 )
To stop the alarm, turn the “START STOP ENGINE” <“POWER”>
switch to IGNITION ON mo de or start the engine
system>.
●Is the electronic key left insid e the vehicle or the moon roof
opened?
Check the message on the multi-information display.
( P. 6 3 6 )
A warning buzzer sounds during driving
An alarm is activated and the horn sounds
A warning buzzer sounds when leaving the vehicle
Page 770 of 784

770Alphabetical index
ES350_300h_OM_OM33B99U_(U)
Emergency, in case ofIf a warning buzzer sounds..................................................626
If a warning light turns on...............626
If a warning message is displayed ....................................... 636
If the 12-volt battery is discharged ........................... 680, 684
If the electronic key does not operate properly ........ 677
If the engine will not start................ 672
If the hybrid system will not start ................................................ 674
If the shift lever cannot be shifted from P ............676
If you have a flat tire ......................... 659
If you think something is wrong...............................................624
If your vehicle becomes stuck ......................................................697
If your vehicle has to be stopped in an emergency ........... 615
If your vehicle needs to be towed .........................................617
If your vehicle overheats .... 688, 691
Emergency flashers ...............................614
Energy monitor ........................................ 114 Engine
Accessory mode ............................... 206
Compartment .....................................545
Engine switch ............................205, 212
Hood..........................................................541
How to start the engine..................205
How to start the hybrid system .................................................... 212
Identification number....................... 702
If the engine will not start ............... 672
Ignition switch (“POWER” switch).................................................... 212
Ignition switch (“START STOP ENGINE” switch) .........................205
Overheating..............................688, 691
“POWER” switch. ............................... 212
“START STOP ENGINE” switch ...................................................205
Engine compartment cover..............547
Engine coolant Capacity................................................. 707
Checking ...............................................553
Preparing and checking before winter ...................................... 341
Engine coolant temperature gauge ......................................................... 97
Engine immobilizer system ................. 84
Engine oil Capacity................................................. 705
Checking ...............................................548
Oil level warning message ........... 644
Oil pressure warning message........................... 637
Preparing and checking before winter ...................................... 341
Page 781 of 784

781Alphabetical index
ES350_300h_OM_OM33B99U_(U)
TiresChains......................................................343
Checking............................................... 566
If you have a flat tire ......................... 659
Inflation pressure .................................. 712
Information ............................................. 718
Replacing .............................................. 659
Rotating tires ....................................... 566
Size .............................................................. 712
Snow tires ..............................................345
Spare tire ............................................... 659
Tire inflation pressure display function ................................................. 105
Tire pressure warning system .....567
Warning light ...................................... 630
Warning message ............................ 650
Tools........................................................... 660
Top tether strap........................................ 69
Total load capacity ............................... 202
Towing Dinghy towing .....................................204
Emergency towing..............................617
Towing eyelet...................................... 620
Trailer towing ...................................... 203
TRAC (Traction Control) ...................313
Traction battery (hybrid battery) .......77
Traction motor (electric motor) .........77
Transmission Automatic transmission .................. 222
Driving mode select switch ............. 311
Hybrid transmission.......................... 226
If the shift lever cannot be shifted from P ...................................676
Trip information...................................... 103
Trip meters ..................................................97 Trunk
Internal trunk release lever ............. 152
Jam protection function..................... 151
Luggage security system................ 150
Open trunk warning message.... 642
Power trunk opener and closer ...149
Smart access system with push-button start....................128
Trunk closer switch............................ 150
Trunk easy closer ................................. 151
Trunk features..................................... 488
Trunk handle ......................................... 150
Trunk light................................................. 151
Trunk opener main switch ............. 150
Trunk opener switch ..........................149
Trunk storage extension ................498
Wireless remote control....................141
Trunk light Trunk light................................................. 151
Wattage ................................................... 714
Turn signal lights Replacing light bulbs ..........604, 608
Turn signal lever ................................. 230
Wattage ................................................... 714
USB memory
*...................................... 359
U
*: For vehicles with a navigation system, refer to the
“NAVIGATION SYSTEM OWNER’S MANUAL”.