2014 Lexus IS250C suspension

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1-7. Safety information
IS250C/350C_U
CAUTION
■Modification and disposal of SRS airbag system components
Do not dispose of your vehicle or perform any of the following modifications with-
out consulting your Lexus dealer.
The SRS airbag may malfunction or deploy (inflate) accidentally, causing death or
serious injury.
●Installation, removal, disassembly and repair of the SRS airbags
●Repairs, modifications, removal or replacement of the steering wheel, instrument
panel, dashboard, seats or seat upholstery
●Repairs or modifications of the front fender, front bumper, or side of the occupant
compartment
●Installation of snow plows, winches, etc. to the front grille (bull bars, kangaroo bar
etc.)
●Modifications to the vehicle's suspension system
●Installation of electronic devices such as mobile two-way radios or CD players
●Modifications to your vehicle for a person with a physical disability

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2-1. Driving procedures
IS250C/350C_U
NOTICE
■When encountering flooded roads
Do not drive on a road that has flooded after heavy rain etc. Doing so may cause the
following serious damage to the vehicle.
●Engine stalling
●Short in electrical components
●Engine damage caused by water immersion
In the event that you drive on a flooded road and the vehicle is flooded, be sure to
have your Lexus dealer check the following.
●Brake function
●Changes in quantity and quality of oil and fluid used for the engine, transmission,
differential, etc.
●Lubricant condition for the propeller shaft, bearings and suspension joints (where
possible), and the function of all joints, bearings, etc.

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2-4. Using other driving systems
2
When driving
IS250C/350C_U
CAUTION
■TRAC may not operate effectively when
Directional control and power may not be achievable while driving on slippery road
surfaces, even if the TRAC system is operating.
Do not drive the vehicle in conditions where stability and power may be lost.
■When the VSC is activated
The slip indicator light flashes. Always drive carefully. Reckless driving may cause
an accident, resulting in death or serious injury. Exercise particular care when the
indicator light flashes.
■When TRAC and VSC are off
Be especially careful and drive at a speed appropriate to the road conditions. As
these are systems to help enhance vehicle stability and driving force, do not turn off
TRAC and VSC unless necessary.
■Replacing tires
Make sure that all tires are of the specified size, brand, tread pattern and total load
capacity. In addition, make sure that the tires are inflated to the recommended tire
pressure level.
The ABS, VSC and TRAC systems will not function correctly if different tires are fit-
ted on the vehicle.
Contact your Lexus dealer for further information when replacing tires or wheels.
■Handling of tires and suspension
Using tires with any kind of problem or modifying the suspension will affect the driv-
ing assist systems, and may cause the system to malfunction.

5
When trouble arises
489
5-1. Essential information
IS250C/350C_U
If you think something is wrong
If you notice any of the following symptoms, your vehicle probably needs
adjustment or repair. Contact your Lexus dealer as soon as possible.
■Visible symptoms
●Fluid leaks under the vehicle
(Water dripping from the air conditioning after use is normal.)
● 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
● Loss of brake effectiveness, sp ongy feeling, pedal almost touches
the floor

603
7
IS250C/350C_U
For owners
ATTENTION
■Modification et mise au rebut des éléments du système de coussins gonflables
SRS
Consultez impérativement votre concessionnaire Lexus avant de mettre votre
véhicule au rebut ou de procéder à l'une des modifications suivantes.
Le coussin 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 réparation des coussins gonflables SRS
●Réparation, modification, démontage ou remplacement du volant de direction,
du tableau de bord, de la planche de bord, des sièges ou de la sellerie
●Réparations ou modifications des ailes avant, du bouclier avant ou des flancs de
l'habitacle
●Installation de chasse-neige, de treuils, etc. sur la calandre (pare-buffle, pare-
kangourou, etc.)
●Modifications des suspensions du véhicule
●Installation d'appareils électroniques tels que radio émetteur/récepteur ou
lecteurs CD
●Aménagements du véhicule visant à permettre sa conduite par une personne
atteinte d'un handicap physique

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7
IS250C/350C_U
For owners
■Avant de vérifier le réglage du faisceau des phares
Vérifiez que le réservoir de carburant du véhicule est plein et
que la carrosserie autour des projecteurs n'a pas subi de choc
suffisant pour la déformer.
Stationnez le véhicule bien à plat.
Installez-vous dans le siège conducteur.
Donnez plusieurs impulsions à la carrosserie du véhicule de
manière à comprimer/détendre les suspensions.
■ Réglage du faisceau des phares
Tournez la vis A dans l'un ou
l'autre sens au moyen d'un
tournevis cruciforme
(empreinte Phillips).
Mémorisez le sens dans lequel
vous avez tourné et le nombre
de tours.
Tournez la vis B du même
nombre de tours dans le même
sens qu'en étape 1 au moyen
d'un tournevis cruciforme
(empreinte Phillips).
Si l'erreur est supérieure à la
valeur précédemment indiquée,
confiez votre véhicule à votre
concessionnaire Lexus pour
qu'il règle le faisceau des
phares.
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