engine Lexus IS F 2011 Owner's Manual

407
4-3. Do-it-yourself maintenance
4
Maintenance and care
IS F_EE
Light bulbs
You may replace the following bulbs yourself. For more information
about replacing other light bulbs, contact any authorized Lexus dealer
or repairer, or another duly qualified and equipped professional.
Preparing a replacement light bulb
Check the wattage of the light bulb being replaced. (P. 481)
Removing the engine compartment cover
P. 367
Front bulb locations
Front fogHeadlight high
beamFront turn
signal light

5When trouble arises
415
IS F_EE
5-1. Essential information
Emergency flashers .......... 416
If your vehicle needs to be
towed.............................. 417
If you think something is
wrong ............................. 423
Fuel pump shut off
system ............................ 4245-2. Steps to take in an
emergency
If a warning light turns
on or a warning buzzer
sounds... ........................ 425
If a warning message is
displayed ........................ 431
If you have a flat tire........ 444
If the engine will not start 454
If the shift lever cannot be
shifted from P ................ 456
If you lose your keys ....... 457
If the electronic key does
not operate properly....... 458
If the vehicle battery is
discharged ...................... 462
If your vehicle overheats . 465
If the vehicle becomes
stuck............................... 468
If your vehicle has to
be stopped in an
emergency...................... 469

416
IS F_EE
5-1. Essential information
Emergency flashers
NOTICE
To prevent battery discharge
Do not leave the emergency flashers on longer than necessary when the
engine is not running.
Use the emergency flashers if the vehicle malfunctions or is involved
in an accident.
Press the switch to flash all
the turn signal lights. To turn
them off, press the switch
once again.

5
417
5-1. Essential information
When trouble arises
IS F_EE
If your vehicle needs to be towed
Before towing
The following may indicate a problem with your transmission.
Contact any authorized Lexus dealer or repairer, or another duly
qualified and equipped professional, before towing.
The engine is running, but the vehicle will not move.
The vehicle makes an abnormal sound.
Emergency towing
If a tow truck is not available, in an emergency your vehicle may
be temporarily towed using a cable or chain secured to the emer-
gency towing eyelet. This should only be attempted on hard, sur-
faced roads for short distances at low speeds.
A driver must be in the vehicle to steer and operate the brakes. The
vehicle’s wheels, drive train, axles, steering and brakes must be in
good condition.
If towing is necessary, we recommend having your vehicle towed by
any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional, such as a commercial towing service, using a
lift-type truck or a flat bed truck.
Use a safety chain system for all towing, and abide by all state/provin-
cial and local laws.
If towing from the rear, the vehicle's front wheels and axles must be in
good condition. (P. 421)
If they are damaged, use a towing dolly or flat bed truck.

418
5-1. Essential information
IS F_EETowing eyelet
Emergency towing procedure
Release the parking brake.
Shift the shift lever to N.
Put the “ENGINE START STOP” switch in ACCESSORY mode
(engine off) or IGNITION ON mode (engine running).
CAUTION
Caution while towing
Use extreme caution when towing the vehicle.
Avoid sudden starts or erratic driving maneuvers which place excessive
stress on the emergency towing eyelet and the cables or chains. Always be
cautious of the surroundings and other vehicles while towing.
If the engine is not running, the power assist for the brakes and steering
will not function, making steering and braking more difficult.
NOTICE
To prevent causing serious damage to the transmission
Never tow this vehicle from the rear with four wheels on the ground. This
may cause serious damage to the transmission.
STEP1
STEP2
STEP3

5
421
5-1. Essential information
When trouble arises
IS F_EE
Towing with a wheel lift-type truck
From the front
Use a towing dolly under the
rear wheels.
From the rear
Turn the “ENGINE START
STOP” switch to the ACCES-
SORY mode so that the steering
wheel is unlocked.
NOTICE
To prevent causing serious damage to the transmission
Never tow this vehicle from the front with the rear wheels on the ground.
To prevent damaging the vehicle
Do not tow the vehicle from the rear with the “ENGINE START STOP”
switch OFF.
The steering lock mechanism is not strong enough to hold the front wheels
straight.
When raising the vehicle from the rear, ensure adequate ground clearance
for towing at the opposite end of the raised vehicle. Without adequate
clearance, the vehicle could be damaged while being towed from the rear.

5
423
5-1. Essential information
When trouble arises
IS F_EE
If you think something is wrong
If you notice any of the following symptoms, your vehicle probably
needs adjustment or repair. Contact any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional, as soon
as possible.
Visible symptoms
Fluid leaks under the vehicle
(Water dripping from the air conditioning after use is nor-
mal.)
Flat-looking tires or uneven tire wear
Engine coolant temperature gauge needle continually points
higher than normal
Audible symptoms
Changes in exhaust sound
Excessive tire squeal when cornering
Strange noises related to the suspension system
Pinging or other noises related to the engine
Operational symptoms
Engine missing, stumbling or running rough
Appreciable loss of power
Vehicle pulls heavily to one side when braking
Vehicle pulls heavily to one side when driving on a level
road

424
5-1. Essential information
IS F_EE
Fuel pump shut off system
NOTICE
Before starting the engine
Inspect the ground under the vehicle.
If you find that fuel has leaked on to the ground, the fuel system has been
damaged and is in need of repair. Do not restart the engine.
To minimize the risk of fuel leakage when the engine stalls or an air-
bag inflates upon collision, the fuel pump shut off system stops sup-
plying fuel to the engine.
Follow the procedure below to restart the engine after the system
is activated.
Turn the “ENGINE START STOP” switch to ACCES-
SORY mode or OFF.
Restart the engine.
STEP1
STEP2

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.

432
5-2. Steps to take in an emergency
IS F_EE
Stop the vehicle immediately.
A buzzer sounds and a warning message is shown on the multi-
information display. The following warning indicates the possibil-
ity of damage to the vehicle that may lead to an accident. Immedi-
ately stop the vehicle in a safe place and contact any authorized
Lexus dealer or repairer, or another duly qualified and equipped
professional.
Warning messageDetails
(Flashing)
Indicates an abnormal engine oil pressure.
The warning light may turn on if the engine oil
pressure is too low.
(Flashing)
Indicates that the engine oil temperature is too
high.
The engine oil temperature gauge display will
also flash. (P. 161)