2010 Lexus ES350 engine light

5
When trouble arises
457
5-2. Steps to take in an emergency
ES350_U
■Changing the engine oil (USA only)
Make sure to reset the oil change system. (oP. 3 7 5 )
■Warning light display in radar cruise mode
In the following cases, the warning light may not be displayed even if vehicle-to-
vehicle distance closes.
●When your vehicle and the vehicle ahead are traveling at the same speed or the
vehicle ahead is traveling more quickly than your vehicle
●When the vehicle ahead is traveling at a very low speed
●Immediately after cruise control speed is set
●At the instant the accelerator pedal is depressed

5
When trouble arises
471
5-2. Steps to take in an emergency
ES350_U
If the engine will not start
If the engine will not start, even though correct starting procedures are
being followed (
oP. 124), consider each of the following points.
■The engine will not start even when the starter motor operates
normally.
One of the following may be the cause of the problem.
●There may not be sufficient fuel in the vehicle’s tank.
Add fuel to the vehicle.
● The engine may be flooded.
Try to restart the engine once more following correct starting
procedures. ( oP. 1 2 4 )
● There may be a malfunction in the engine immobilizer system.
(o P. 78)
■ The starter motor turns over slowly, the interior lights and head-
lights are dim, or the horn does not sound or sounds at a low vol-
ume.
One of the following may be the cause of the problem.
● The battery may be discharged. ( oP. 4 7 7 )
● The battery terminal connections may be loose or corroded.
■ The starter motor does not turn over
One of the following may be the cause of the problem.
●The engine starting system may be malfunctioning due to an elec-
trical problem such as an open circuit or a blown fuse. However,
an interim measure is available to start the engine. ( oP. 4 7 2 )

472
5-2. Steps to take in an emergency
ES350_U
Emergency start functionWhen the engine does not start, the following steps can be used as an
interim measure to start the engine if the “ENGINE START STOP” switch
is functioning normally. Set the parking brake.
Shift the shift lever to P.
Set the “ENGINE START STOP” switch to the ACCESSORY
mode.
Push and hold the “ENGINE START STOP” switch about 15 sec-
onds while depressing the brake pedal firmly.
Even if the engine can be started using the above steps, the system may
be malfunctioning. Have the vehicle checked by your Lexus dealer.
■ The starter motor does not turn over, the interior lights and head-
lights do not turn on, or the horn does not sound.
One of the following may be the cause of the problem.
● One or both of the battery terminals may be disconnected.
● The battery may be discharged. ( oP. 4 7 7 )
● There may be a malfunction in the steering lock system.
Contact your Lexus dealer if the problem cannot be repaired, or if
repair procedures are unknown.
STEP1
STEP2
STEP3
STEP4

478
5-2. Steps to take in an emergency
ES350_U
■Starting the engine when the battery is discharged
The engine cannot be started by push-starting.
■Avoiding a discharged battery
●Turn off the headlights and the audio system while the engine is turned off.
●Turn off any unnecessary electrical components when the vehicle is running at a
low speed for an extended period, such as in heavy traffic, etc.
Start the engine of the second vehicle. Increase the engine
speed slightly and maintain at that level for approximately 5
minutes to recharge the battery of your vehicle.
Open and close any of the doors with the “ENGINE START
STOP” switch OFF.
Maintain the engine speed on the second vehicle and turn the
“ENGINE START STOP” switch to the IGNITION ON mode,
then start the vehicle’s engine.
Once the vehicle’s engine has started, remove the jumper
cables in the exact reverse order in which they were con-
nected.
Once the engine starts, have the vehicle checked at your Lexus dealer
as soon as possible.STEP3
STEP4
STEP5
STEP6

491
6-1. Specifications
6
Vehicle specifications
ES350_U
Ignition system
Electrical system
Spark plug
MakeDENSO
Gap
FK20HR11
0.043 in. (1.1 mm)
NOTICE
■Iridium-tipped spark plugs
Use only above spark plugs. Do not adjust gaps for your engine performance or
smooth driveability.
Battery
Open voltage at
68 qF (20 qC):12.6 12.8 V Fully charged
12.2 
12.4 V Half charged
11.8 
12.0 V Discharged
(Voltage is checked 20 minutes after
the engine and all the lights are turned
off)
Charging rates5 A max.

496
6-1. Specifications
ES350_U
Fuel information
■Fuel tank opening for unleaded gasoline
To help prevent incorrect fueling, your Lexus has a fuel tank opening that only
accommodates the special nozzle on unleaded fuel pumps.
■If your engine knocks
●Consult your Lexus dealer.
●You may occasionally notice light knocking for a short time while accelerating
or driving uphill. This is normal and there is no need for concern.
■Gasoline quality
In very few cases, driveability problems may be caused by the brand of gasoline you
are using. If driveability problems persist, try changing the brand of gasoline. If this
does not correct the problem, consult your Lexus dealer.
Your vehicle must use only unleaded gasoline.
Premium unleaded gasoline with an octane rating of 91 (Research Octane
Number 96) or higher required for optimum engine performance. If 91
octane cannot be obtained, you may use unleaded gasoline with an octane
rating as low as 87 (Research Octane Number 91). Use of unleaded gaso-
line with an octane rating lower than 91 may result in engine knocking. Per-
sistent knocking can lead to engine damage and should be corrected by
refueling with higher octane unleaded gasoline.
At minimum, the gasoline you use should meet the specifications of
ASTM D4814 in the U.S.A. and CGSB3.5-M93 in Canada.

515
6-2. Customization
6
Vehicle specifications
ES350_U
Multi-information display (oP. 1 4 0 )
Illumination
(
oP. 3 0 8 )
Time elapsed before lights
turn off15 seconds
OFF
7. 5 s e c o n d s
30 seconds
Operation when the
doors are unlockedONOFF
Operation after the
“ENGINE START STOP”
switch turned OFF
ONOFF
Front foot well lightingONOFF
Outer foot lightONOFF
Seat belt
reminder
(
oP. 4 4 1 )
Vehicle speed linked seat
belt reminder buzzerONOFF
CountryAvailable languages
CanadaEnglish and French
ItemFunctionDefault settingCustomized
setting

530
Alphabetical index
ES350_U
Cooling systemEngine overheating ......................... 480
Cornering assist sensors .................... 165
Cruise control Cruise control .......................................152
Dynamic radar crui se control ...... 155
Cup holders ............................................. 315
Curtain shield airbags............................85
Customizable features ..........................511
Daytime running light system ........... 146
Defogger Rear window........................................ 207
Side mirror ............................................ 207
Dimension ................................................486
Dinghy towing ......................................... 197
Display Dynamic radar crui se control ...... 155
Trip information ......................................141
Warning message............................. 449
Do-it-yourself maintenance .............366
Door courtesy lights Door courtesy lights........................ 308
Wattage.................................................. 495
Doors Door glasses ........................................... 68
Door lock.................................. 26, 38, 41
Side mirrors ............................................. 66
Driver's seat belt reminder light ...... 441
Driving Break-in tips ............................................. 117
Correct posture .................................... 83
Procedures .............................................. 116
Winter driving tips.............................. 184
Driving position memory ......................50 Electronic key
If the electronic key does not
operate properly.............................475
Emergency, in case of
If the electronic key does not operate properly.............................475
If the engine will not start ................. 471
If the shift lever cannot be shifted from P....................................473
If the vehicle has discharged
battery .................................................. 477
If the warning buzzer sounds...... 439
If the warning light turns on.......... 439
If the warning message is
displayed ............................................ 449
If you have a flat tire .......................... 461
If you lose your keys ......................... 474
If you think something is
wrong .................................................. 435
If your vehicle becomes stuck .... 483
If your vehicle needs to be towed ....................................................429
If your vehicle overheats................480
Emergency flashers
Switch...................................................... 428
Engine
Compartment ......................................373
Engine switch ........................................ 124
Hood ....................................................... 370
How to start the engine ................... 124
Identification number ...................... 487
If the engine will not start ................. 471
Ignition switch ....................................... 124
Overheating ........................................480
Engine compartment cover ............. 374
D
E