Page 492 of 584
492
5-2. Steps to take in an emergency
If the engine will not start
If the engine will not start even though correct starting procedures are
being followed (
P. 140), 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.
Refuel the vehicle.
● The engine may be flooded.
Try to restart the engine once more following correct starting
procedures. ( P. 140)
● There may be a malfunction in the engine immobilizer system.
( P. 9 1 )
■ The starter motor turns over slow ly, 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. ( P. 500)
● The battery terminal connections may be loose or corroded.
Page 493 of 584
5
When trouble arises
493
5-2. Steps to take in an emergency
■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. ( P. 500)
● 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.
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5
When trouble arises
501
5-2. Steps to take in an emergency
■Avoiding a discharged battery
●Turn off the headlights and the audio system while the engine is 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.
■Charging the battery
The electricity stored in the battery will discharge gradually even when the vehicle
is not in use, due to natural discharge and the draining effects of certain electrical
appliances. If the vehicle is left for a long time, the battery may discharge, and the
engine may be unable to start. (The batt ery recharges automatically during driving.)
■When the battery is removed or discharged
Make sure that the key is not inside the vehicle when recharging or replacing the
battery. The key may be locked in the vehicle if the alarm is activated. ( P. 9 4 )
Maintain the engine speed of th e second vehicle and turn the
“ENGINE START STOP” switch to IGNITION ON mode,
then start the vehicle’s engine.
Once the vehicle’s engine ha s started, remove the jumper
cables in the exact reverse ord er in which they were con-
nected.
Once the engine starts, have the ve hicle checked at your Lexus dealer
as soon as possible.STEP5
STEP6
Page 518 of 584
518
6-1. Specifications
Electrical system
DifferentialFront
Rear
*: Your Lexus vehicle is filled with “Toyota Genuine Differential Gear Oil” at the factory. Use Lexus approved “Toyota Genuine Differential Gear Oil” or an
equivalent oil of matching quality that satisfies the above specifications. Please
contact your Lexus dealer for further details.
Battery
Open voltage* at
68 F (20 C):12.6 12.8 V Fully charged
12.2
12.4 V Half charged
11.8
12.0 V Discharged
(*: Voltage checked 20 minutes after
the engine and all the lights are turned
off)
Charging rates5 A max.
Oil capacity0.74 qt. (0.70 L, 0.61 Imp. qt.)
Oil typeHypoid gear oil API GL-5
Oil viscosityAbove 0 F (-18 C): SAE90
Below 0 F (-18 C): SAE80W or SAE80W-90
Oil capacity
IS350:
1.42 qt. (1.35 L, 1.19 Imp. qt.)
IS250: 1.20 qt. (1.15 L, 1.01 Imp. qt.)
Oil type and viscosity*Toyota Genuine Differential Gear Oil LT 75W-85
GL-5 or equivalent
Page 525 of 584
525
6-1. Specifications
6
Vehicle specifications
Light bulbs
A: D4S discharge bulbs
B: H11 halogen bulbs
C: Wedge base bulbs (amber)
D: HB3 halogen bulbs
E: Wedge base bulbs (clear)
F: Double end bulbs
Light BulbsBulb No.WTy p e
Exterior
HeadlightsHigh beam
Low/high beam (discharge bulbs)
Low beam (halogen bulbs)
9005
D4SH1160
35
55DA B
Front turn signal lights21C
Parking lights (vehicles with
halogen headlights)1685E
Front fog lightsH1155B
Rear turn signal lights74 4 021E
Back-up lights92116E
Outer foot lights5E
Interior
Vanity lights8E
Trunk light5F
Interior lights Front
Rear
53E F
Overhead courtesy lights3F
Front door courtesy lights5E
Page 544 of 584
544
6-2. Customization
Steering
wheel
(
P. 74 )
Auto tilt-away functionOnOff
Pow e r w i n -
dows
(
P. 8 1 )
Linked door key opera-
tionOpen and close
Off
Open only
Close only
Wireless remote control
linked operationOffOpen only
Moon roof
(
P. 8 4 )
Linked door key opera-
tionOpen and close
Off
Open only
Close only
Linked operation of com-
ponents when door key is
used
Slide onlyTilt only
Wireless remote control
linked operationOffOpen only
Linked operation of com-
ponents when wireless
remote control is used
Slide onlyTilt only
Automatic
light control
system
(
P. 1 6 7 )
Light sensor sensitivityLevel 3Level 1 to 5
Ti m e e l a p s e d b e f o r e
headlights automatically
turn off after doors are
closed
30 seconds
0 seconds
60 seconds
90 seconds
Lights
(
P. 1 6 9 )
Daytime running light sys-
tem (U.S.A. only)OnOff
ItemFunctionDefault settingCustomizedsetting
Page 545 of 584
545
6-2. Customization
6
Vehicle specifications
Windshield
wipers and
washer
(
P. 1 7 3 )
Switching operation when
the vehicle is stationaryOnOff
Drip prevention functionOnOff
Time elapsed before the
drip prevention function
operatesVa r i a b l e
depending on
the vehicle
speed
3 seconds
Intuitive park-
ing assist
(
P. 1 8 5 )
Back sensor operation
display and buzzerOnOff
Buzzer volumeLevel 3Level 1 to 5
Distance which a sensor
detects4.9 ft. (150 cm)2.0 ft. (60 cm)
Illumination
(
P. 3 1 9 )
Time elapsed before lights
turn off15 seconds7. 5 s e c o n d s
30 seconds
Operation when the
doors are unlockedOnOff
Operation after the
“ENGINE START STOP”
switch is turned OFF
OnOff
Front footwell lightsOnOff
Shift lever lightOnOff
Outer foot lightOnOff
Seat belt
reminder
(
P. 4 6 5 )
Vehicle speed linked seat
belt reminder buzzerOnOff
ItemFunctionDefault settingCustomizedsetting
Page 569 of 584

569
Alphabetical index
Back-up lightsWattage ................................................. 525
Battery Checking ............................................... 402
If the vehicle has a discharged battery................................................. 500
Preparing and checking before winter ...................................... 201
Bluetooth
® audio* ...............................270
Bluetooth® phone*............................. 288
Bottle holders ........................................ 329
Brake Fluid ..........................................................400
Parking brake ..........................................151
Brake assist ................................................ 191 Care
Exterior.................................................... 372
Interior ..................................................... 376
Seat belts ................................................ 377
Cargo capacity ........................................197
Cargo hooks.......................................... 350
CD changer* ........................................... 231
CD player* ............................................... 231
Chains ........................................................ 201
Child-protectors ...................................... 49
Child restraint system Booster seats, definition .................... 115
Booster seats, installation ................122
Convertible seats, definition ............ 115
Convertible seats, installation ........ 122
Front passenger occupant classification system ......................... 110
Infant seats, definition .......................... 115
Infant seats, installation ...................... 122
Installing CRS with LATCH anchors ................................................. 120
Installing CRS with seat belts ......... 122
Installing CRS with top straps....... 125
B
*: For vehicles with a navigation system, refe r to the “Navigation System Owner’s Manual”.
C