2013 Lexus IS300h radio

4547-3. Do-it-yourself maintenance
IS300h_EE(OM53B95E)
Situations in which the tire pressure warning system may not operate properly
In the following cases, the tire pressure warning system may not operate prop-
erly.
• If non-genuine Lexus wheels are used.
• A tire has been replaced with a tire that is not an OE (Original Equipment)
tire.
• A tire has been replaced with a tire that is not of the specified size.
• Tire chains etc. are equipped.
• Lock nuts are equipped.
• An auxiliary-supported run-flat tire is equipped.
• If a window tint that affects the radio wave signals is installed.
• If there is a lot of snow or ice on the vehicle, particularly around the wheels
or wheel housings.
• If the tire inflation pressure is extremely higher than the specified level.
• If tires not equipped with tire pressure warning valves and transmitters are
used.
• If the ID code on the tire pressure warning valves and transmitters is not reg-
istered in the tire pressure warning computer.
Performance may be affected in the following situations.
• Near a TV tower, electric power plant, gas station, radio station, large dis-
play, airport or other facility that generates strong radio waves or electrical
noise
• When carrying a portable radio, cellular phone, cordless phone or other
wireless communication device
When the vehicle is parked, the time taken for the warning to start or go off
could be extended.
When tire inflation pressure declines rapidly for example when a tire has burst,
the warning may not function.
The initialization operation
Make sure to carry out initialization after adjusting the tire inflation pressure.
Also, make sure the tires are cold before carrying out initialization or tire infla-
tion pressure adjustment.
If you have accidentally turned the power switch off during initialization, it is
not necessary to press the reset switch again as initialization will restart auto-
matically when the power switch has been turned to ON mode for the next time.
If you accidentally press the reset switch when initialization is not necessary,
adjust the tire inflation pressure to the specified level when the tires are cold,
and conduct initialization again.
Warning performance of the tire pressure warning system
The warning of the tire pressure warning system will change in accordance with
the conditions under which it was initialized. For this reason, the system may
give a warning even if the tire pressure does not reach a low enough level, or if
the pressure is higher than the pressure that was adjusted to when the system was
initialized.

588
IS300h_EE(OM53B95E)What to do if... (Troubleshooting)
What to do if... (Troubleshooting)
If you lose your mechanical keys, new genuine mechanical keys can be
made by any authorized Lexus dealer or repairer, or another duly qual-
ified and equipped professional. (P. 132)
If you lose your electronic keys, the risk of vehicle theft increases sig-
nificantly. Contact any authorized Lexus dealer or repairer, or another
duly qualified and equipped professional immediately. (P. 135)
Is the electronic key battery weak or depleted? (P. 472)
Is the power switch in ON mode?
When locking the doors, turn the power switch off. (P. 210)
Is the electronic key left inside the vehicle?
When locking the doors, make sure that you have the electronic key on
your person.
The function may not operate properly due to the condition of the radio
wave. (P. 151)
Is the child-protector lock set?
The rear door cannot be opened from inside the vehicle when the lock
is set. Open the rear door from outside and then unlock the child-pro-
tector lock. (P. 1 4 0 )
If you have a problem, check the following before contacting any autho-
rized Lexus dealer or repairer, or another duly qualified and equipped
professional.
The doors cannot be locked, unlocked, opened or closed
You lose your keys
The doors cannot be locked or unlocked
The rear door cannot be opened

593Alphabetical index
IS300h_EE(OM53B95E)
Anti-lock Brake System (ABS) .293
Function ................................293
Warning light........................508
Approach warning .....................254
Armrest ......................................422
ASC (Active Sound Control) ....225
Assist grips ................................424
Audio input................................323
Audio system .............................316
Audio CD player ..................341
Audio input ...........................323
AUX port/
USB port ............................323
Bluetooth
® audio ..................365
iPod.......................................348
Optimal use...........................331
Portable music player ...........356
Radio ....................................339
Steering wheel audio switch .322
USB memory ........................351
Automatic headlight leveling
system ....................................228
Warning light........................509
Automatic High Beam ..............229
Automatic light control system 226
AUX port ...................................323
Average fuel economy ..............117
Average vehicle speed...............117Back-up light
Replacing light bulb............. 488
Wattage ................................ 572
Battery (12-volt battery) ........... 447
If the 12-volt battery is
discharged ......................... 551
Preparing and checking
before winter ..................... 311
Warning light ....................... 507
Battery (traction battery) ............ 83
Blind Spot Monitor (BSM) ...... 309
Blower customization ............... 405
Bluetooth®
Audio system ....................... 365
Hands-free system
(for cellular phone)............ 367
Bottle holders ........................... 415
Brake
Fluid ..................................... 569
Parking brake ....................... 224
Regenerative braking ............. 81
Warning light ....................... 507
Brake assist .............................. 293
Break-in tips ............................ 193
Brightness control
Instrument panel light control....
113
BSM (Blind Spot Monitor)....... 309
B

605Alphabetical index
IS300h_EE(OM53B95E)
Radar cruise control (dynamic
radar cruise control) ................249
Radiator .....................................446
Radio .........................................339
Rear Crossing Traffic Alert .......309
Rear fog light.............................233
Replacing light bulb .............493
Switch ...................................233
Rear passengers’ seat belt
reminder lights ........................509
Rear seat ....................................166
Fold down the seatback ........166
Luggage security system ......145
Rear personal lights ...................412
Wattage .................................572
Rear sunshade............................422
Operation ..............................422
Reverse operation feature .....422
Rear turn signal lights ...............222
Replacing light bulbs ............486
Turn signal lever ...................222
Wattage .................................572Rear view mirror
Inside rear view mirror ........ 178
Outside rear view mirrors .... 180
Rear view monitor system ........ 279
Rear window defogger ............ 404
Refueling .................................. 241
Capacity ............................... 564
Fuel types............................. 564
If the fuel filler door cannot
be opened .......................... 243
Opening the fuel tank cap .... 243
Regenerative braking.................. 81
Remote Touch
*
Replacing
Electronic key battery .......... 472
Fuses .................................... 475
Light bulbs ........................... 479
Tires ..................................... 460
Rev indicator ............................ 118
Rev peak ................................... 118
Road accident cautions ............... 87
Run-flat tires ............................. 545
R
*: For vehicles with a navigation system, refer to the
“Navigation System Owner’s Manual”.