Page 483 of 652
483
4-3. Do-it-yourself maintenance
4
Maintenance and care
RX350/270_EE
Tires
Replace or rotate tires in accordance with maintenance schedules and
treadwear.
■Checking tires
New tread
Treadwear indicator
Worn tread
The location of treadwear indi-
cators is shown by the “TWI” or
“ ” marks, etc., molded on the
sidewall of each tire.
Check spare tire condition and
pressure if not rotated.
■Tire rotation
Vehicles with a compact spare tire
Rotate the tires in the order
shown.
To equalize tire wear and help
extend tire life, Lexus recom-
mends that you rotate your tires
approximately at the following
intervals:
2WD models:
Every 10000 km (6000
miles)
AW D m o d e l s :
Every 5000 km (3000
miles)
Vehicles with tire pressure
warning system: Do not fail to
initialize the tire pressure warn-
ing system after tire rotation.
Front
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Page 487 of 652

487
4-3. Do-it-yourself maintenance
4
Maintenance and care
RX350/270_EE
■When to replace your vehicle’s tires
Tires should be replaced if:
●You have tire damage such as cuts, splits, cracks deep enough to expose the
fabric, and bulges indicating internal damage
●A tire goes flat repeatedly or cannot be properly repaired due to the size or
location of a cut or other damage
If you are not sure, consult with any authorized Lexus dealer or repairer, or another
duly qualified and equipped professional.
■Replacing tires and wheels
If the ID code of the tire pressure warning valve and transmitter is not registered,
the tire pressure warning system will not work properly. After driving for about 10
minutes, the tire pressure warning light blinks for 1 minute and stays on to indicate a
system malfunction.
■Tire life
●Standard tire over 6 years old must be checked by a qualified technician even if
they have seldom or never been used or damage is not obvious.
●The compact spare tire could be deformed gradually in the long term even if
you don't use it. Be sure to have the compact spare tire checked by any autho-
rized Lexus dealer or repairer, or another duly qualified and equipped profes-
sional if it is over 5 years.
■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.
■If the tread on snow tires wears down 4 mm (0.16 in.)
The effectiveness of the tires as snow tires is lost
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Page 550 of 652

550
5-2. Steps to take in an emergency
RX350/270_EE
●If tire chains are used
●Vehicles with a full-size spare tire: If the spare tire is in a location subject to poor
radio wave signal reception
●Vehicles with a full-size spare tire: If a large metallic object which can interfere
with signal reception is put in the luggage compartment
■If the tire pressure warning light frequently comes on after blinking for 1 minute
If the tire pressure warning light frequently comes on after blinking for 1 minute
when the “ENGINE START STOP” switch is turned to IGNITION ON mode, have
it checked by any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional.
■Customization
The vehicle speed linked seat belt reminder buzzer can be disabled.
(Customizable features →P. 6 2 2 )
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 precautions. Failure to do so could cause 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, change
it with the spare tire and have the flat tire repaired by the nearest authorized
Lexus dealer or repairer, or another duly qualified and equipped professional.
●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.
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Page 573 of 652
5
573
5-2. Steps to take in an emergency
When trouble arises
RX350/270_EE
■Location of the spare tire, jack and tools
Vehicles with a compact spare tire
Vehicles with a full-size spare tire
Towing eyelet
Tool bag
Jack handle
Wheel nut
wrench
JackSpare tireSpare tire
cover
Towing eyelet
Tool bag
JackSpare tire Jack handle
Wheel nut
wrenchSpare tire
cover
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Page 646 of 652

646
Alphabetical index
RX350/270_EE
Smart entry & start system
Entry function............................................ 31
Starting the engine ............................. 180
Spare tire
Inflation pressure..................................617
Storage location ................................. 572
Spark plug................................................. 613
Specifications .........................................606
Speedometer .......................................... 196
Steering
Column lock release......................... 183
Steering wheel
Adjustment............................................... 94
Audio switches* .................................. 381
Heated steering wheel.................... 437
Power easy access system .............. 84
Steering wheel position
memory....................................................81
Storage feature...................................... 420
Stuck vehicle
If your vehicle becomes stuck...... 601
Sun visors .................................................430
Sunshade
Roof ................................................ 105, 108Switch
Airbag manual on/off switch......... 163
Display contrast adjustment
switch ..................................................... 212
Display position adjustment
switch ..................................................... 212
ECT SNOW switch ......................... 188
Emergency flasher switch............. 532
Engine switch ....................................... 180
ENTER switch..................................... 203
Fog light switch.................................... 222
Hazard light switch........................... 532
Head-up display main switch ....... 212
Heated steering wheel switch .....437
Ignition switch ...................................... 180
Light switches........................................ 217
Menu switch......................................... 203
Paddle shift switches..........................186
Power back door switch .................. 60
Power door lock switch.................... 56
Power window switch........................ 101
Pre-crash braking off switch.......... 281
Rear window wiper and washer
switch .................................................... 227
Window lock switch ........................... 101
Wiper and washer switch ..............223
RX350_270_EE_48D77E.book 646 ページ 2014年1月24日 金曜日 午前10時4分