lexus LFA 2012 Owner's Manual / LEXUS 2012 LFA OWNERS MANUAL (OM77006U)

5
When trouble arises
319
5-2. Steps to take in an emergency
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.
■If the tire pressure warning light comes on
Be sure to observe the following precaution s. Failure to do so could cause a loss of
vehicle control and result in death or serious injury.
●Stop your vehicle in a safe place as soon as possible. Adjust the tire inflation pres-
sure immediately.
●If the tire pressure warning light comes on even after tire inflation pressure adjust-
ment, it is probable that you have a flat tire. Check the tires. If a tire is flat, tempo-
rarily repair the tire using the em ergency tire puncture repair kit ( P. 3 3 2 ) a n d
then have the tire repaired or replaced by the nearest Lexus dealer.
●Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you could
lose control of the steering wheel or the brakes.
■If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.

320
5-2. Steps to take in an emergency
CAUTION
■Maintenance of the tires
Each tire, including the spare (if provided), should be checked monthly when cold
and inflated to the inflation pressure re commended by the vehicle manufacturer on
the vehicle placard or tire inflation pressu re label (tire and load information label).
(If your vehicle has tires of a different size than the size indicated on the vehicle
placard or tire inflation pressure label [tire and load information label], you should
determine the proper tire inflation pressure for those tires.)
As an added safety feature, your vehicl e has been equipped with a tire pressure
monitoring system (TPMS-tire pressure warning system) that illuminates a low tire
pressure telltale (tire pressure warning light) when one or more of your tires is sig-
nificantly under-inflated. Accordingly, when the low tire pressure telltale (tire pres-
sure warning light) illuminates, you should stop and check your tires as soon as
possible, and inflate them to the proper pressure. Driving on a significantly under-
inflated tire causes the tire to overheat and can lead to tire failure. Under-inflation
also reduces fuel efficiency and tire tread life, and may affect the vehicle's handling
and stopping ability.
Please note that the TPMS (tire pressure warning system) is not a substitute for
proper tire maintenance, and it is the driv er's responsibility to maintain correct tire
pressure, even if under-inflation has not reached the level to trigger illumination of
the TPMS low tire pressure telltale (tire pressure warning light).
Your vehicle has also been equipped with a TPMS (tire pressure warning system)
malfunction indicator to indicate when th e system is not operating properly. The
TPMS (tire pressure warning system) malfunction indicator is combined with the
low tire pressure telltale (tire pressure warning light). When the system detects a
malfunction, the telltale will flash for approximately one minute and then remain
continuously illuminated. This sequence will continue upon subsequent vehicle
start-ups as long as the malfunction exists . When the malfunction indicator is illumi-
nated, the system may not be able to detect or signal low tire pressure as intended.
TPMS (tire pressure warning system) malfunctions may occur for a variety of rea-
sons, including the installation of replacem ent or alternate tires or wheels on the
vehicle that prevent the TPMS (tire pres sure warning system) from functioning
properly. Always check the TPMS (tire pressure warning system) malfunction tell-
tale after replacing one or more tires or wheels on your vehicle to ensure that the
replacement or alternate tires and wheels allow the TPMS (tire pressure warning
system) to continue to function properly.

5
When trouble arises
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5-2. Steps to take in an emergency
NOTICE
■Precaution when installing a different tire
When a tire of a different specification or maker is installed, the tire pressure warn-
ing system may not operate properly.

322
5-2. Steps to take in an emergency
If a warning message is displayed
If a warning message is shown on the meter, stay calm and perform the follow-
ing actions:
Normal displayMaster warning light
Comes on or flashes to indicate
that a message is currently being
displayed on the meter.
Warning message
If multiple warning messages
occur, they will be shown alter-
nately.

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When trouble arises
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5-2. Steps to take in an emergency
Menu displayMaster warning light
Comes on or flashes to indicate
that a message is currently being
displayed on the meter.
Warning message
If multiple warning messages
occur, they will be shown alter-
nately.
“Warning”
Can be selected when a message
is shown while in the menu display.
Select “Warning” with the control
pad and press right to display the
warning message list.
Warning message list
Lists up to four currently occurring
warning messages.
If five or more warning messages
have occurred, press up or down
on the control pad to scroll through
them.
Once the warning is resolved, the
corresponding message will disap-
pear.
If any of the warning lights turns on again after performing the following
actions, contact your Lexus dealer.

324
5-2. Steps to take in an emergency
Stop the vehicle immediately. Continuing to drive the vehicle may be dangerous.
A buzzer sounds and a warning message is shown on the meter. The fol-
lowing warning indicates a possible problem in the brake system. Imme-
diately stop the vehicle in a safe place and contact your Lexus dealer.
Stop the vehicle immediately.
A buzzer sounds and a warning messa ge is shown on the meter. The fol-
lowing warnings indicate the possibility of damage to the vehicle that may
lead to an accident. Immediately stop the vehicle in a safe place and con-
tact your Lexus dealer.
MessageDetails
(U.S.A.)
(Canada) Indicates the following:
• The brake fluid level is low; or,
• The brake system is malfunctioning.
MessageDetails
Indicates an abnormal engine oil pressure. The warning light may turn on if the engine oil pres-
sure is too low.

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When trouble arises
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5-2. Steps to take in an emergency
Have the vehicle inspected by your Lexus dealer immediately.A buzzer sounds and a message is show n on the meter. Failure to investi-
gate the cause of the following messag es may lead to the system operat-
ing abnormally and possibly cause an accident. Have the vehicle
inspected by your Lexus dealer immediately.
MessageDetails
Indicates a malfunction in the parking brake system.
(U.S.A.)
(Flashes)
(Canada)
(Flashes) Indicates that parking brake operation is restrained.
May come on if the parking brake cannot be oper-
ated due to a malfunction.
Indicates a malfunction in the transmission system.

326
5-2. Steps to take in an emergency
Indicates a malfunction in the transmission oil cooler
system.
Indicates a malfunction in the charging system.
Indicates brake pad wear.Reminds the driver to have the brake pads changed.
Indicates a malfunction in the wiper system. May come on if the wiper motor is malfunctioning.
Indicates a malfunction in the active rear wing sys-
tem.
MessageDetails

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When trouble arises
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5-2. Steps to take in an emergency
Follow the correction procedures.A buzzer sounds and a message is sh own on the meter. After taking the
specified steps to correct the susp ected problem, check that the mes-
sage goes off.
MessageDetailsCorrection procedure
Indicates that either or
both side doors are not
fully closed. The system also indi-
cates which doors are
not fully closed.
flashes and a
buzzer sounds to indi-
cate that either or both
side doors are not fully
closed (with the vehicle
having reached a speed
of 3 mph [5 km/h]). Make sure that both side
doors are closed.
Indicates that the hood is
not fully closed. flashes and a
buzzer sounds to indi-
cate that hood is not fully
closed (with the vehicle
having reached a speed
of 3 mph [5 km/h]). Close the hood.

328
5-2. Steps to take in an emergency
Indicates that the rear
hatch is not fully closed. flashes and a
buzzer sounds to indi-
cate that the rear hatch
is not fully closed (with
the vehicle having
reached a speed of 3
mph [5 km/h]). Close the rear hatch.
(Flashes)
(U.S.A.)
(Canada) Indicates that the parking
brake is still engaged.
May come on if the vehi-
cle reaches a speed of 3
mph (5 km/h). Release the parking
brake. (
P. 113)
(Flashes)
(U.S.A.)
(Flashes)
(Canada)
(Flashes) Indicates that parking
brake operation is
restrained.
Parking brake operation
is restrained to protect
the system from over-
heating due to repeated
operation of the parking
brake. Refrain from operating the
parking brake for 1 minute.
MessageDetailsCorrection procedure