reset Lexus HS250h 2012 Owner's Guide

456
4-3. Do-it-yourself maintenance
HS250h_U_75050U
■If you press the tire pressure warning reset switch accidentally
If initialization is performed, adjust the tire inflation pressure to the specified level
and initialize the tire pressure warning system again.
■When the initialization of the tire pressure warning system has failed
Initialization can be completed in a few minutes. However, in the following cases,
the settings have not been recorded and the system will not operate properly. If
repeated attempts to record tire inflation pressure settings are unsuccessful, have
the vehicle inspected by your Lexus dealer.
●When operating the tire pressure warning reset switch, the tire pressure warn-
ing light does not blink 3 times and the setting message does not appear on the
multi-information display.
●After carrying out the initialization procedure, the tire pressure warning light
blinks for 1 minute then stays on after driving for 20 minutes.
■Tire pressure warning system certification
For vehicles sold in the U.S.A.
FCC ID: PAXPMV107J
FCC ID: HYQ13BCX
NOTE:
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
NOTE:
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.

457
4-3. Do-it-yourself maintenance
4
Maintenance and care
HS250h_U_75050U
CAUTION
■When inspecting or replacing tires
Observe the following precautions to prevent accidents. Failure to do so may cause
damage to parts of the drive train as well as dangerous handling characteristics,
which may lead to an accident resulting in death or serious injury.
●Do not mix tires of different makes, models or tread patterns. Also, do not mix
tires of remarkably different treadwear.
●Do not use tire sizes other than those recommended by Lexus.
●Do not mix differently constructed tires (radial, bias-belted or bias-ply tires).
●Do not mix summer, all season and snow tires.
●Do not use tires that have been used on another vehicle.
Do not use tires if you do not know how they were used previously.
■When initializing the tire pressure warning system
Do not operate the tire pressure warning reset switch without first adjusting the tire
inflation pressure to the specified level. Otherwise, the tire pressure warning light
may not come on even if the tire inflation pressure is low, or it may come on when
the tire inflation pressure is actually normal.

5
When trouble arises
507
5-2. Steps to take in an emergency
HS250h_U_75050U
■SRS warning light
This warning light system monitors the airbag sensor assembly, front airbag sensors,
side and curtain shield airbag sensors, curtain shield and rear side airbag sensors,
driver’s seat position sensor, driver’s seat belt buckle switch, front passenger occu-
pant classification system (ECU and sensors), “AIR BAG ON” indicator light, “AIR
BAG OFF” indicator light, front passenger’s seat belt buckle switch, seat belt pre-
tensioner assemblies, inflators, interconnecting wiring and power sources. (→P.
109)
■Front passenger detection sensor, passen ger seat belt reminder and warning
buzzer
●If luggage is placed on the front passenger seat, the front passenger detection
sensor may cause the warning light to flash and the warning buzzer to sound
even if a passenger is not sitting in the seat.
●If a cushion is placed on the seat, the sensor may not detect a passenger, and the
warning light may not operate properly.
■Electric power steering system warning light (warning buzzer)
When the 12-volt battery charge becomes insufficient or the voltage temporarily
drops, the electric power steering system warning light may come on and the warn-
ing buzzer may sound.
■If the malfunction indicator lamp comes on while driving
First check the following:
●Is the fuel tank empty?
If it is, fill the fuel tank immediately.
●Is the fuel tank cap loose?
If it is, tighten it securely.
The light will go off after several driving trips.
If the light does not go off even after several trips, contact your Lexus dealer as soon
as possible.
■When the tire pressure warning light comes on
Check the tire inflation pressure and adjust to the appropriate level. Pushing the tire
pressure warning reset switch will not turn off the tire pressure warning light.

5
When trouble arises
517
5-2. Steps to take in an emergency
HS250h_U_75050U
(Flashes)
(If equipped)
Indicates that the moon
roof is not fully closed A buzzer also sounds.
(With the “POWER”
switch off, and the
driver's door open)
Close the moon roof.
Indicates that the parking
brake is still engagedIf the vehicle reaches a
speed of 3 mph
(5 km/h),
flashes and a buzzer
sounds to indicate that
the parking brake is still
engaged.
Release the parking
brake.
Indicates that the washer
fluid level is lowAdd washer fluid.
(U.S.A. only)
Indicates that all mainte-
nance according to the
driven distance on the
maintenance schedule*
1
should be performed
soon.
If necessary, perform
maintenance.
Comes on approximately
4500 miles (7200 km)
after the maintenance
data has been reset.
Wa r n i n g m e s s a g eDetailsCorrection procedure

518
5-2. Steps to take in an emergency
HS250h_U_75050U
(U.S.A. only)
Indicates that all mainte-
nance is required to cor-
respond to the driven
distance on the mainte-
nance schedule*
1 .Pe r f o r m t h e n e c e s s a r y
maintenance.
Please reset the mainte-
nance data after the main-
tenance is performed
(→ P. 4 2 4 )
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.)
Indicates that the tire
inflation pressure is lowCheck the tire inflation
pressure, and adjust to the
appropriate level.
(If equipped)
Indicates that the pre-
collision system is not
currently functional
• The grille or the sensor is
dirty.
• The pre-collision system is not functional due to
overheating.
• Check the grille and the sensor and clean them if
they are dirty.
• Check that the system will become functional
after the system cools
down.
Wa r n i n g m e s s a g eDetailsCorrection procedure

5
When trouble arises
537
5-2. Steps to take in an emergency
HS250h_U_75050UFirmly tighten each wheel nut two
or three times in the order shown
in the illustration.
Tightening torque:
76 ft•lbf (103 N•m, 10.5 kgf•m)
Stow the flat tire, tire jack and all tools.
■The compact spare tire
●The compact spare tire is identified by the label “TEMPORARY USE ONLY”
on the tire sidewall.
Use the compact spare tire temporarily, and only in an emergency.
●Make sure to check the tire inflation pressure of the compact spare tire.
(
→ P. 5 6 7 )
■After completing the tire change
The tire pressure warning system must be reset. ( →P. 4 5 3 )
■When using the compact spare tire
As the compact spare tire is not equipped with a tire pressure warning valve and
transmitter, low inflation pressure of the spare tire will not be indicated by the tire
pressure warning system. Also, if you replace the compact spare tire after the tire
pressure warning light comes on, the light remains on.
■If you have a flat front tire on a road covered with snow or ice
Install the compact spare tire on one of the rear wheels of the vehicle. Perform the
following steps and fit tire chains to the front tires:
Replace a rear tire with the compact spare tire.
Replace the flat front tire with the tire removed from the rear of the vehi-
cle.
Fit tire chains to the front tires.

620
Alphabetical index
HS250h_U_75050U
Outside rear view mirrorsAdjusting and folding ......................... 87
Driving position memory................... 72
Mirror position memory ....................72
Outside rear view mirror defogger switch* ............................... 274
Outside temperature display.............177
Overhead console ...............................384
Overheating, Engine...........................552
Overheating, Hybrid system ...........552
Parking brake ...........................................167
Parking lights Replacing light bulbs......................... 481
Switch ......................................................... 191
Wattage................................................. 568
PCS ............................................................ 245
Personal lights Personal lights ..................................... 375
Switch ...................................................... 375
Wattage................................................. 568
Power easy access system................... 69
Power outlet........................................... 388
Power switch ........................................... 152
Power windows ........................................90
Pre-collision system.............................245
Radar cruise control ............................. 216
Radiator .................................................... 444
Radio* ....................................................... 279
Radio data system* ............................... 281
RDS* ........................................................... 281
Rear side marker lights Replacing light bulbs..........................491
Wattage................................................. 568
Rear sunshade .......................................392 Rear turn signal lights
Replacing light bulbs ......................... 481
Wattage .................................................568
Rear view mirror
Compass ............................................... 404
Rear view monitor system*
Rear window defogger* .....................274
Remote Touch*
Replacing Electronic key battery ......................467
Fuses........................................................ 469
Light bulbs .............................................. 481
Tires.......................................................... 532
Reporting safety defects for
U.S. owners..........................................598
Reset the maintenance data ............ 424
Safety connect .......................................408
Scuff lighting ........................................... 374
Seat belts
Adjusting the seat belt ........................78
Automatic Locking Retractor ......... 79
Child restraint system installation ............................................ 130
Cleaning and maintaining the seat belt......................................... 421
Emergency Locking Retractor ...... 79
How to wear your seat belt ............. 77
How your child should wear the seat belt........................................... 79
Pre-collision seat belts.................... 245
Pregnant women, proper seat belt use ......................... 79
Reminder light.....................................505
Seat belt extenders.............................. 80
Seat belt pretensioners ......................78
P
R
S

622
Alphabetical index
HS250h_U_75050U
Fog light switch................................... 202
Ignition switch........................................152
Light switches ......................................... 191
Mode select switch............................. 162
Power door lock switch ...................... 61
Power switch ......................................... 152
Power window switch ........................ 90
Talk switch................................328, 347
Telephone switch .............................. 347
Tire pressure warning reset switch ................................................... 453
Window lock switch ........................... 90
Wiper and washer switch ............. 204
Tail lights Replacing light bulbs..........................491
Switch ......................................................... 191
Wattage................................................. 568
Talk switch* ................................. 328, 347
Telephone switch*................................ 347
Theft deterrent system Alarm ........................................................ 103
Immobilizer system.............................. 101
Theft prevention labels ........................ 106
TILT switch*
Tire inflation pressure .........................459
Tire information Glossary.................................................578
Size ........................................................... 575
Tire identification number ............. 574
Uniform Tire Quality Grading.... 576
Tires
Chains ..................................................... 259
Checking .................................................451
Compact spare tire .......................... 532
If you have a flat tire .......................... 532 Inflation pressure ............................... 459
Inflation pressure sensor ............... 452
Information ............................................572
Replacing .............................................. 532
Rotating tires.......................................... 451
Size ........................................................... 567
Snow tires.............................................. 258
Spare tire ............................................... 532
Tire pressure warning
system....................................... 451, 505
Tools........................................................... 532
Total load capacity ............................... 257
Towing Dinghy towing .....................................262
Emergency towing ........................... 495
Trailer towing ........................................ 261
TRAC ........................................................ 238
Traction control..................................... 238
Trailer towing ...........................................261
Trip meter ..................................................169
Trunk Opener ......................................................64
Turn signal lights Replacing light bulbs ......................... 481
Switch ........................................................ 166
Wattage .................................................568
Vanity lights Vanity lights.......................................... 386
Wattage .................................................568
Vanity mirrors ........................................ 386
Vehicle identification number ......... 560
Vehicle stability control ..................... 238
Ventilators ...............................................389
VIEW button*
VSC ........................................................... 238
T
V