2012 Lexus ES350 ESP

396
4-3. Do-it-yourself maintenance
ES350_U
■Routine tire inflation pressure checks
The tire pressure warning system does not replace routine tire inflation pressure
checks. Make sure to check tire inflation pressure as part of your routine of daily
vehicle checks.
■Tire pressure warning system certification
FCC ID: PAXPMV107J
FCC ID: HYQ13BCXFor vehicles sold in the USA
This device complies with part 15 of the FCC Rules. Operation is subject to the fol-
lowing two conditions: (1) This device may not cause harmful interference, and (2)
this device must accept any interference received, including interference that may
cause undesired operation.
FCC WARNING:
Changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment.
For vehicles sold in Canada
Operation is subject to the following two conditions: (1) this device may not cause
interference, and (2) this device must accept any interference, including interfer-
ence that may cause undesired operation of the device.

5
When trouble arises
447
5-2. Steps to take in an emergency
ES350_U
CAUTION
■Maintenance of the tires
Each tire, including the spare (if provided), should be checked monthly when cold
and inflated to the inflation pressure recommended by the vehicle manufacturer on
the vehicle placard or tire inflation pressure 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 vehicle 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 driver'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 the 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 replacement or alternate tires or wheels on the
vehicle that prevent the TPMS (tire pressure 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.

454
5-2. Steps to take in an emergency
ES350_U
Wa r n i n g m e s s a g eDetailsCorrection procedure
Indicates that engine oil
level is low.A buzzer also sounds.Check the level of engine
oil, and add if necessary.
(USA only)
Indicates that all mainte-
nance according to the
driven distance on the
maintenance schedule*
should be performed
soon.
If necessary, perform
maintenance.
Comes on approximately
4500 miles (7200 km)
after the maintenance
data has been reset.
(USA only)
Indicates that all mainte-
nance is required to cor-
respond to the driven
distance on the mainte-
nance schedule*.
Pe r f o r m t h e n e c e s s a r y
maintenance. Please reset
the maintenance data
after the maintenance is
performed ( →P. 3 6 5 )
Comes on approximately
5000 miles (8000 km)
after the maintenance
data has been reset.
(The indicator will not
work properly unless the
maintenance data has
been reset.)

504
6-1. Specifications
ES350_U■
Temperature A, B, C
The temperature grades are A (the highest), B, and C, representing
the tire's resistance to the generation of heat and its ability to dissipate
heat when tested under controlled conditions on a specified indoor
laboratory test wheel.
Sustained high temperature can cause the material of the tire to degenerate
and reduce tire life, and excessive temperature can lead to sudden tire fail-
ure.
The grade C corresponds to a level of performance which all passenger car
tires must meet under the Federal Motor Vehicle Safety Standard No. 109.
Grades B and A represent higher levels of performance on the laboratory
test wheel than the minimum required by law.
Warning: The temperature grades for this tire are established for a tire that
is properly inflated and not overloaded.
Excessive speed, underinflation, or excessive loading, either separately or in
combination, can cause heat buildup and possible tire failure.
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pres-
sureTire pressure when the vehicle has been parked for
three hours or more, or has not been driven more
than 1 mile or 1.5 km under that condition
Maximum inflation pres-
sureThe maximum cold inflated pressure to which a tire
may be inflated, shown on the sidewall of the tire
Recommended inflation
pressureCold tire inflation pressure recommended by a man-
ufacturer
Accessory weight
The combined weight (in excess of those standard
items which may be replaced) of automatic transmis-
sion, power steering, power brakes, power windows,
power seats, radio and heater, to the extent that these
items are available as factory-installed equipment
(whether installed or not)

507
6-1. Specifications
6
Vehicle specifications
ES350_U
CT
A pneumatic tire with an inverted flange tire and rim
system in which the rim is designed with rim flanges
pointed radially inward and the tire is designed to fit
on the underside of the rim in a manner that encloses
the rim flanges inside the air cavity of the tire
Extra load tire
A tire designed to operate at higher loads and at
higher inflation pressures than the corresponding
standard tire
GrooveThe space between two adjacent tread ribs
InnerlinerThe layer(s) forming the inside surface of a tubeless
tire that contains the inflating medium within the tire
Innerliner separationThe parting of the innerliner from cord material in the
carcass
Intended outboard side-
wall
(a) The sidewall that contains a whitewall, bears white lettering, or bears manufacturer, brand,
and/or model name molding that is higher or
deeper than the same molding on the other side-
wall of the tire, or
(b) The outward facing sidewall of an asymmetrical
tire that has a particular side that must always
face outward when mounted on a vehicle
Light truck (LT) tire
A tire designated by its manufacturer as primarily
intended for use on lightweight trucks or multipur-
pose passenger vehicles
Load ratingThe maximum load that a tire is rated to carry for a
given inflation pressure
Maximum load ratingThe load rating for a tire at the maximum permissible
inflation pressure for that tire
Maximum permissible
inflation pressureThe maximum cold inflation pressure to which a tire
may be inflated
Tire related termMeaning

508
6-1. Specifications
ES350_U
Measuring rimThe rim on which a tire is fitted for physical dimension
requirements
Open spliceAny parting at any junction of tread, sidewall, or
innerliner that extends to cord material
Outer diameterThe overall diameter of an inflated new tire
Overall width
The linear distance between the exteriors of the side-
walls of an inflated tire, including elevations due to
labeling, decorations, or protective bands or ribs
Passenger car tire
A tire intended for use on passenger cars, multipur-
pose passenger vehicles, and trucks, that have a
gross vehicle weight rating (GVWR) of 10,000 lb. or
less.
PlyA layer of rubber-coated parallel cords
Ply separationA parting of rubber compound between adjacent
plies
Pneumatic tire
A mechanical device made of rubber, chemicals, fab-
ric and steel or other materials, that, when mounted
on an automotive wheel, provides the traction and
contains the gas or fluid that sustains the load
Radial ply tire
A pneumatic tire in which the ply cords that extend to
the beads are laid at substantially 90 degrees to the
centerline of the tread
Reinforced tire
A tire designed to operate at higher loads and at
higher inflation pressures than the corresponding
standard tire
Section width
The linear distance between the exteriors of the side-
walls of an inflated tire, excluding elevations due to
labeling, decoration, or protective bands
SidewallThat portion of a tire between the tread and bead
Tire related termMeaning

529
7
ES350_U
For owners
ATTENTION
■Précautions avec les sacs de sécurité gonflables SRS
Respectez les précautions suivantes avec les sacs de sécurité gonflables.
À défaut, des blessures graves, voire mortelles, pourraient s'ensuivre.
●Le conducteur et tous les passagers à bord du véhicule doivent porter leur
ceinture de sécurité correctement.
Les sacs de sécurité gonflables SRS sont des dispositifs de protection
complémentaires aux ceintures de sécurité.
●Le sac de sécurité gonflable SRS conducteur se déploie avec une violence
considérable, qui peut être très dangereuse voire mortelle si le conducteur se
trouve très près du sac de sécurité gonflable. L'autorité fédérale chargée de la
sécurité routière aux États-Unis, la NHTSA (National Highway Traffic Safety
Administration) conseille:
La zone à risque du sac de sécurité gonflable conducteur se situant dans les
premiers 2 à 3 in. (50 à 75 mm) de déploiement, vous disposez d'une
confortable marge de sécurité en vous plaçant à 10 in. (250 mm) de votre sac de
sécurité gonflable conducteur. Cette distance est à mesurer entre le moyeu du
volant de direction et le sternum. Si vous êtes actuellement assis à moins de 10 in.
(250 mm), vous pouvez changer votre position de conduite de différentes
façons:
 Reculez votre siège au maximum tout en atteignant confortablement lespédales.
 Inclinez légèrement le dossier du siège. Bien que la conception des véhicules soit variable, la plupart des conducteurs peuvent s'asseoir à une distance de
10 in. (250 mm), même avec le siège conducteur complètement avancé, en
inclinant simplement un peu le dossier du siège. Si vous avez des difficultés à
voir la route après avoir incliné votre siège, utilisez un coussin ferme et
antidérapant pour vous rehausser, ou si votre véhicule est équipé du réglage
en hauteur du siège, remontez-le.
 Si votre volant de direction est réglable, inclinez-le vers le bas. Cela a pour effet d'orienter le sac de sécurité gonflable en direction de votre poitrine
plutôt que de votre tête et de votre cou.
Réglez votre siège selon les recommandations de la NHTSA, tout en conservant le
contrôle des pédales, du volant de direction et la vue des commandes du tableau
de bord.

533
7
ES350_U
For owners
ATTENTION
■Précautions avec les sacs de sécurité gonflables SRS
●Si vous avez des difficultés à respirer après le déploiement d'un sac de sécurité
gonflable SRS, ouvrez une porte ou une vitre pour faire entrer de l'air frais, ou
bien descendez du véhicule si cela ne présente pas de danger. Essuyez tout
résidu dès que possible afin d'éviter d'éventuelles irritations de la peau.
●Si les parties renfermant les sacs de sécurité gonflables SRS, telles que la
garniture du moyeu de volant et la garniture de montant avant, apparaissent
abîmées ou craquelées, faites-les remplacer par votre concessionnaire Lexus.
■Modification et mise au rebut des éléments du système de sacs de sécurité
gonflables SRS
Consultez impérativement votre concessionnaire Lexus si vous avez besoin
d'intervenir sur votre véhicule ou de procéder à l'une des modifications suivantes.
Le sac de sécurité gonflable SRS risque de ne pas fonctionner correctement ou de
se déclencher (déployer) accidentellement, ce qui pourrait risquer de vous tuer ou
blesser grièvement.
●Installation, dépose, démontage et réparations des sacs de sécurité gonflables
SRS
●Réparations, modifications, dépose ou remplacement du volant, du combiné
d'instruments, de la planche de bord, des sièges ou de leur garnissage, des
montants avant, latéraux et arrière ou des rails latéraux de toit
●Réparation ou modification des ailes avant, du bouclier avant, ou des flancs de
l'habitacle
●Installation d'un chasse-neige, d'un treuil, etc. sur la calandre (pare-buffle, pare-
kangourou, etc.)
●Modification des suspensions du véhicule
●Installation d'appareils électroniques, tels qu'un radioémetteur/récepteur ou d'un
lecteur CD
●Aménagements du véhicule visant à permettre sa conduite par une personne
atteinte d'un handicap physique