belt Lexus IS F 2011 Service Manual

405
4-3. Do-it-yourself maintenance
4
Maintenance and care
IS F_EE
13FR DOOR RH20 APower windows, outside rear view
mirrors
14AM27.5 ASmart entry & start system
15RH-IG7.5 A
Seat belts, Lexus parking assist-
sensor, automatic transmission,
seat heaters, windshield wiper de-
icer
16FR S/HTR RH15 ASeat heaters
17ECU-IG RH10 A
Power seats, smart entry & start
system, VDIM, air conditioning
system, pre-crash seat belt, electric
tilt and telescopic steering column,
power windows, navigation sys-
tem, headlights, front fog lights,
front position lights, license plate
lights, windshield washer, outside
rear view mirrors
After a fuse is replaced
If the lights do not turn on even after the fuse has been replaced, a bulb
may need replacement. (P. 407)
If the replaced fuse blows again, have the vehicle inspected by any
authorized Lexus dealer or repairer, or another duly qualified and
equipped professional.
If there is an overload in the circuits
The fuses are designed to blow, protecting the wiring harness from damage.
FuseAmpereCircuit

426
5-2. Steps to take in an emergency
IS F_EE
Stop the vehicle immediately.
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 any authorized Lexus dealer or repairer,
or another duly qualified and equipped professional.
Have the vehicle inspected immediately.
Failing 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 any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional,
immediately.
Warning lightWarning light/Details
Charging system warning light
Indicates a malfunction in the vehicle’s charging system.
Warning lightWarning light/Details
Malfunction indicator lamp
Indicates a malfunction in:
• The electronic engine control system;
• The electronic throttle control system; or
• The electronic automatic transmission control system.
SRS warning light
Indicates a malfunction in:
• The SRS airbag system; or
• The seat belt pretensioner system.
ABS warning light
Indicates a malfunction in:
• The ABS; or
• The brake assist system.

428
5-2. Steps to take in an emergency
IS F_EE
Follow the correction procedures.
After taking the specified steps to correct the suspected problem,
check that the warning light turns off.
Electric power steering system warning light
When the voltage is low or drops, the electric power steering system warn-
ing light may come on.
CAUTION
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.
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 doors and the
trunk are closed.
Low fuel level warning
light
Remaining fuel
(Approximately 11 L
[2.9 gal., 2.4 Imp. gal.] or
less)
Refuel the vehicle.
(On the
instrument
cluster)
Driver’s seat belt
reminder light
(warning buzzer)
*2
Warns the driver to fasten
his/her seat belt.
Fasten the seat belt.

5
429
5-2. Steps to take in an emergency
When trouble arises
IS F_EE
*1:Open door warning buzzer:
P. 435
*2:Driver's and front passenger’s seat belt buzzer:
The driver’s and front passenger’s seat belt buzzer sounds to alert the
driver and front passenger that his or her seat belt is not fastened. The
buzzer sounds for 30 seconds after the vehicle reaches a speed of 20 km/
h (12 mph). Then, if the seat belt is still unfastened, the buzzer will sound
in a different tone for 90 more seconds.
(On the center
panel)
Front passenger’s seat belt
reminder light
(warning buzzer)
*2
Warns the front passenger
to fasten his/her seat belt.
Fasten the seat belt.
Master warning light
A buzzer sounds and the
warning light comes on
and flashes to indicate that
the master warning sys-
tem has detected a mal-
function.
P. 4 3 1
Warning lightWarning light/DetailsCorrection procedure

430
5-2. Steps to take in an emergency
IS F_EE
If the malfunction indicator lamp comes on while driving
The malfunction indicator lamp will come on if the fuel tank becomes com-
pletely empty. If the fuel tank is empty, refuel the vehicle immediately. The
malfunction indicator lamp will go off after several trips.
If the malfunction indicator lamp does not go off, contact any authorized
Lexus dealer or repairer, or another duly qualified and equipped profes-
sional as soon as possible.
Front passenger detection sensor and passenger seat belt reminder and
warning buzzer
If luggage is placed on the front passenger seat, the front passenger
detection sensor may cause the warning light to flash and the warning
buzzer to sound, even if a passenger is not sitting in the seat.
If a cushion is placed on the seat, the sensor may not detect a passenger,
and the warning light may not operate properly.

464
5-2. Steps to take in an emergency
IS F_EE
CAUTION
Avoiding battery fires or explosions
Observe the following precautions to prevent accidentally igniting the flam-
mable gas that may be emitted from the battery.
Make sure the jumper cable is connected to the correct terminal and that it
is not unintentionally in contact with any part other than the intended ter-
minal.
Do not allow the jumper cables to come into contact with the “+” and “-”
terminals.
Do not allow open flame or use matches, cigarette lighters or smoke near
the battery.
Battery precautions
The battery contains poisonous and corrosive acidic electrolyte, while
related parts contain lead and lead compounds. Observe the following pre-
cautions when handling the battery.
When working with the battery, always wear safety glasses and take care
not to allow any battery fluids (acid) to come into contact with skin, cloth-
ing or the vehicle body.
Do not lean over the battery.
In the event that battery fluid comes into contact with the skin or eyes,
immediately wash the affected area with water and seek medical attention.
Place a wet sponge or cloth over the affected area until medical attention
can be received.
Always wash your hands after handling the battery support, terminals, and
other battery-related parts.
Do not allow children near the battery.
NOTICE
When handling jumper cables
Be careful that the jumper cables do not become tangled in the cooling fan
or any of the belts when connecting or disconnecting them.

466
5-2. Steps to take in an emergency
IS F_EE
Overheating
If you observe the following, your vehicle may be overheating.
The display on the engine coolant temperature gauge flashes or a loss of
power is experienced.
Steam is coming from under the hood.
CAUTION
To prevent an accident or injury when inspecting under the hood of your
vehicle
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, caus-
ing serious injury such as burns.
Keep hands and clothing away from the fans and belt while the engine is
running.
Do not loosen the coolant reservoir cap while the engine and radiator are
hot.
Serious injury, such as burns, may result from hot coolant and steam
released under pressure.
Add engine coolant if neces-
sary.
Water can be used in an
emergency if engine coolant
is unavailable.
(P. 4 7 7)
Have the vehicle checked at the nearest authorized Lexus dealer
or repairer, or another duly qualified and equipped professional,
as soon as possible.
STEP5

474
6-1. Specifications
IS F_EEEngine number
The engine number is stamped on the engine block as shown.
Engine
Fuel
Model2UR-GSE
Ty p e8-cylinder V type, 4-cycle, gasoline
Bore and stroke94.0  89.5 mm (3.70 3.52 in.)
Displacement4969 cm3 (303.2 cu. in.)
Drive belt tensionAutomatic adjustment
Fuel type
EU area:
Unleaded gasoline conforming to European stan-
dard EN228 only
Except EU area:
Unleaded gasoline only
Research octane num-
ber95 or higher
Fuel tank capacity
(Reference)64 L (16.9 gal., 14.0 Imp. gal.)

492
Alphabetical index
IS F_EE
Automatic transmission
Automatic transmission ........150
If the shift lever cannot be
shifted from P .....................456
M mode.................................155
AUX port* .................................277
Auxiliary box ............................329
Back-up lights
Replacing light bulbs ............407
Wattage .................................481
Battery
Checking ...............................374
If the vehicle has a discharged
battery.................................462
Preparing and checking before
winter .................................222
Bluetooth
® audio* .....................279
Bluetooth® phone* ....................300
Bottle holders ............................328
Brake
Parking brake ........................160
Brake assist................................206
Care
Exterior .................................350
Interior ..................................353
Seat belts...............................354
Cargo hooks ..............................347
CD changer*..............................245CD player* ............................... 245
Chains ....................................... 222
Child restraint system
Baby seats, definition .......... 116
Baby seats, installation ........ 124
Child seats, definition .......... 116
Child seats, installation ........ 124
Installing CRS with ISOFIX
rigid anchor ....................... 128
Installing CRS with seat belts....
125
Installing CRS with top straps ...
128
Junior seats, definition ......... 116
Junior seats, installation....... 124
Child safety
Airbag precautions............... 111
Battery precautions ...... 377, 464
Child restraint system .......... 116
Child-protectors ..................... 55
How your child should wear
the seat belt.......................... 73
Installing child restraints ..... 124
Moon roof precautions........... 88
Power window lock switch .... 82
Power window precautions.... 84
Removed electronic key battery
precautions ........................ 391
Seat belt comfort guide .......... 71
Seat belt precautions .............. 73
Seat heater precautions ........ 340
Trunk precautions .................. 61
B
C

493
Alphabetical index
IS F_EE
Child-protectors...........................55
Cigarette lighter .........................337
Cleaning
Exterior .................................350
Interior ..................................353
Seat belts...............................354
Clock .........................................332
Coat hooks .................................344
Condenser ..................................374
Console box ...............................326
Cooling system
Engine overheating ...............465
Cornering assist sensors ............199
Cruise control
Cruise control .......................180
Dynamic radar cruise control .....
184
Cup holder .................................327
Curtain shield airbags ................105
Customizable features ...............484Daytime running light system .. 173
Defogger*
Rear window ........................ 236
Side mirror ........................... 236
Dimension ................................ 472
Display
Dynamic radar cruise control ....
184
Satellite switch mode ........... 333
Trip information .................. 168
Warning message................. 431
Do-it-yourself maintenance ...... 359
Door courtesy lights
Door courtesy lights............. 320
Wattage ................................ 481
Door pockets............................. 328
Doors
Door lock ................... 36, 52, 54
Door windows........................ 82
Double locking system .......... 96
Side mirrors ........................... 81
Driver's seat belt reminder light 428
Driving
Correct posture .................... 103
Procedures ........................... 136
Driving position memory ........... 62
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s
D